A class in the phylum CNIDARIA which alternates between polyp and medusa forms during their life cycle. There are over 2700 species in five orders.
A phylum of radially symmetrical invertebrates characterized by possession of stinging cells called nematocysts. It includes the classes ANTHOZOA; CUBOZOA; HYDROZOA, and SCYPHOZOA. Members carry CNIDARIAN VENOMS.
A genus of freshwater polyps in the family Hydridae, order Hydroida, class HYDROZOA. They are of special interest because of their complex organization and because their adult organization corresponds roughly to the gastrula of higher animals.
The class of true jellyfish, in the phylum CNIDARIA. They are mostly free-swimming marine organisms that go through five stages in their life cycle and exhibit two body forms: polyp and medusa.
Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)
Lists of words, usually in alphabetical order, giving information about form, pronunciation, etymology, grammar, and meaning.
The class of box jellyfish, in the phylum CNIDARIA, characterized by their cube shape, and considered the most venomous jellyfish.
The upper part of the human body, or the front or upper part of the body of an animal, typically separated from the rest of the body by a neck, and containing the brain, mouth, and sense organs.
The order Actiniaria, in the class ANTHOZOA, comprised of large, solitary polyps. All species are carnivorous.
Discrete abnormal tissue masses that protrude into the lumen of the DIGESTIVE TRACT or the RESPIRATORY TRACT. Polyps can be spheroidal, hemispheroidal, or irregular mound-shaped structures attached to the MUCOUS MEMBRANE of the lumen wall either by a stalk, pedunculus, or by a broad base.
Discrete tissue masses that protrude into the lumen of the COLON. These POLYPS are connected to the wall of the colon either by a stalk, pedunculus, or by a broad base.
A plant genus of the family ASTERACEAE, order Asterales, subclass Asteridae. It is a source of costus root oil and should not be confused with the genus COSTUS.
An infraorder of chiefly marine, largely carnivorous CRUSTACEA, in the order DECAPODA, including the genera Cancer, Uca, and Callinectes.
Places for cultivation and harvesting of fish, particularly in sea waters. (from McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
A large subphylum of mostly marine ARTHROPODS containing over 42,000 species. They include familiar arthropods such as lobsters (NEPHROPIDAE), crabs (BRACHYURA), shrimp (PENAEIDAE), and barnacles (THORACICA).
A loose confederation of computer communication networks around the world. The networks that make up the Internet are connected through several backbone networks. The Internet grew out of the US Government ARPAnet project and was designed to facilitate information exchange.
The portion of an interactive computer program that issues messages to and receives commands from a user.
A publication issued at stated, more or less regular, intervals.
Organic chemistry methodology that mimics the modular nature of various biosynthetic processes. It uses highly reliable and selective reactions designed to "click" i.e., rapidly join small modular units together in high yield, without offensive byproducts. In combination with COMBINATORIAL CHEMISTRY TECHNIQUES, it is used for the synthesis of new compounds and combinatorial libraries.
A quantitative measure of the frequency on average with which articles in a journal have been cited in a given period of time.
Remains, impressions, or traces of animals or plants of past geological times which have been preserved in the earth's crust.
The study of early forms of life through fossil remains.
A mass of organic or inorganic solid fragmented material, or the solid fragment itself, that comes from the weathering of rock and is carried by, suspended in, or dropped by air, water, or ice. It refers also to a mass that is accumulated by any other natural agent and that forms in layers on the earth's surface, such as sand, gravel, silt, mud, fill, or loess. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed, p1689)
The science of the earth and other celestial bodies and their history as recorded in the rocks. It includes the study of geologic processes of an area such as rock formations, weathering and erosion, and sedimentation. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
A family of colorless sulfur bacteria in the order Thiotrichales, class GAMMAPROTEOBACTERIA.
Animals that have no spinal column.
Planet that is the third in order from the sun. It is one of the four inner or terrestrial planets of the SOLAR SYSTEM.
A class in the phylum CNIDARIA, comprised mostly of corals and anemones. All members occur only as polyps; the medusa stage is completely absent.
Marine ridges composed of living CORALS, coral skeletons, calcareous algae, and other organisms, mixed with minerals and organic matter. They are found most commonly in tropical waters and support other animal and plant life.
Flagellate EUKARYOTES, found mainly in the oceans. They are characterized by the presence of transverse and longitudinal flagella which propel the organisms in a rotating manner through the water. Dinoflagellida were formerly members of the class Phytomastigophorea under the old five kingdom paradigm.
Instinctual behavior pattern in which food is obtained by killing and consuming other species.
The relationship between two different species of organisms that are interdependent; each gains benefits from the other or a relationship between different species where both of the organisms in question benefit from the presence of the other.
The continuous sequence of changes undergone by living organisms during the post-embryonic developmental process, such as metamorphosis in insects and amphibians. This includes the developmental stages of apicomplexans such as the malarial parasite, PLASMODIUM FALCIPARUM.
It is a form of protection provided by law. In the United States this protection is granted to authors of original works of authorship, including literary, dramatic, musical, artistic, and certain other intellectual works. This protection is available to both published and unpublished works. (from Circular of the United States Copyright Office, 6/30/2008)
Protective measures against unauthorized access to or interference with computer operating systems, telecommunications, or data structures, especially the modification, deletion, destruction, or release of data in computers. It includes methods of forestalling interference by computer viruses or so-called computer hackers aiming to compromise stored data.
The privacy of information and its protection against unauthorized disclosure.
The state of being free from intrusion or disturbance in one's private life or affairs. (Random House Unabridged Dictionary, 2d ed, 1993)
The legal authority or formal permission from authorities to carry on certain activities which by law or regulation require such permission. It may be applied to licensure of institutions as well as individuals.
The protection of genetic information about an individual, family, or population group, from unauthorized disclosure.
Decisions, usually developed by government policymakers, for determining present and future objectives pertaining to the health care system.
The process of cumulative change at the level of DNA; RNA; and PROTEINS, over successive generations.
The relationships of groups of organisms as reflected by their genetic makeup.
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
The techniques used to produce molecules exhibiting properties that conform to the demands of the experimenter. These techniques combine methods of generating structural changes with methods of selection. They are also used to examine proposed mechanisms of evolution under in vitro selection conditions.
Animals having a vertebral column, members of the phylum Chordata, subphylum Craniata comprising mammals, birds, reptiles, amphibians, and fishes.
The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION.

A shoot meristem-like organ in animals; monopodial and sympodial growth in Hydrozoa. (1/105)

Thecate Hydrozoa produce stems from which polyps branch off. Similar to plants these stems form in two ways, either in a sympodial or in a monopodial type of growth. In the latter group a terminal organ develops which has similarities to a shoot apical meristem of higher plants: it elongates without a further differentiation. Similar to leaf formation in plants, thecate Hydrozoa produce polyps in a repetitive manner. This process continues during the whole life of the animal and has not yet been found to be limited by internal mechanisms. We studied the monopodially growing thecate Hydrozoon Dynamena pumila and suggest that the stem tip, the apical shoot meristem-like organ, is a polyp primordium hindered to develop into a polyp by the laterally developing polyps.  (+info)

Redox signaling in the growth and development of colonial hydroids. (2/105)

Redox signaling provides a quick and efficient mechanism for clonal or colonial organisms to adapt their growth and development to aspects of the environment, e.g. the food supply. A 'signature' of mitochondrial redox signaling, particularly as mediated by reactive oxygen species (ROS), can be elucidated by experimental manipulation of the electron transport chain. The major sites of ROS formation are found at NADH dehydrogenase of complex I and at the interface between coenzyme Q and complex III. Inhibitors of complex III should thus upregulate ROS from both sites; inhibitors of complex I should upregulate ROS from the first but not the second site, while uncouplers of oxidative phosphorylation should downregulate ROS from both sites. To investigate the possibility of such redox signaling, perturbations of colony growth and development were carried out using the hydroid Podocoryna carnea. Oxygen uptake of colonies was measured to determine comparable physiological doses of antimycin A(1) (an inhibitor of complex III), rotenone (an inhibitor of complex I) and carbonyl cyanide m-chlorophenylhydrazone (CCCP; an uncoupler of oxidative phosphorylation). Using these doses, clear effects on colony growth and development were obtained. Treatment with antimycin A(1) results in 'runner-like' colony growth, with widely spaced polyps and stolon branches, while treatment with CCCP results in 'sheet-like' growth, with closely spaced polyps and stolon branches. Parallel results have been obtained previously with azide, an inhibitor of complex IV, and dinitrophenol, another uncoupler of oxidative phosphorylation. Perhaps surprisingly, rotenone produced effects on colony development similar to those of CCCP. Assays of peroxides using 2',7'-dichlorofluorescin diacetate and fluorescent microscopy suggest a moderate difference in ROS formation between the antimycin and rotenone treatments. The second site of ROS formation (the interface between coenzyme Q and complex III) may thus predominate in the signaling that regulates colony development. The fat-rich, brine shrimp diet of these hydroids may be relevant in this context. Acyl CoA dehydrogenase, which catalyzes the first step in the mitochondrial beta-oxidation of fatty acids, carries electrons to coenzyme Q, thus bypassing complex I. These results support a role for redox signaling, mediated by ROS, in colony development. Nevertheless, other redox sensors between complexes I and III may yet be found.  (+info)

Evolutionary aspects of developmentally regulated helix-loop-helix transcription factors in striated muscle of jellyfish. (3/105)

The function of basic helix-loop-helix (bHLH) proteins in cell differentiation was shown to be conserved from Drosophila to vertebrates, exemplified by the function of MyoD in striated muscle differentiation. In phylogeny striated muscle tissue appears first in jellyfish and the question of its evolutionary position is controversially discussed. For this reason we have studied the developmental role of myogenic bHLH genes in medusa development. Based on their dimerization ability, four genes of the bHLH family of transcription factors were isolated from the hydrozoan jellyfish Podocoryne carnea. While the proteins Id and Ash group with cognate family members from bilaterians, Net-like and JellyD1 could not be unequivocally classified. Id is expressed during the medusa budding process and in the adult medusa, Ash and Net-like are expressed in all life cycle stages from egg to adult medusa and JellyD1 is expressed in the blastula and gastrula stages, the planula larva, and in late medusa bud stages. The dimerization specificity, the expression pattern, and the conservation of two residues specific for a MyoD bHLH domain suggest that JellyD1 is related to an ancestral MyoD gene. Id, Net-like, and JellyD1 are either expressed in the entocodon or its derived tissues, the striated and smooth muscle of the bell. These findings strengthen the hypothesis that the entocodon is a mesoderm-like structure and that the common ancestor of Cnidaria and Bilateria was more complex in cell-type architecture and body organization than commonly thought.  (+info)

Larval behavioral, morphological changes, and nematocyte dynamics during settlement of actinulae of Tubularia mesembryanthemum, Allman 1871 (Hydrozoa: Tubulariidae). (4/105)

The marine colonial hydroid Tubularia mesembryanthemum produces a morphologically unique dispersive stage, the actinula larva. Detailed observations were made on the behaviors and nematocyte dynamics of actinula larvae during attachment and morphogenesis by employing microscopic and time lapse video techniques. These observations produced four primary results. (1) Actinula larvae demonstrated two forms of attachment: temporary attachment by atrichous isorhiza (AI)-nematocysts discharged from the aboral tentacle (AT) tips-and permanent settlement by cement secretion from the columnar gland cells of the basal protrusion. (2) During larval settlement, numerous AIs were discharged from the AT tips with sinuous movement and rubbing of the tentacles onto the substrata, leading to "nematocyte-printing" around the settlement site. (3) Simultaneous with the discharge of the AIs, migration of stenoteles, desmonemes, and microbasic mastigophores occurred, resulting in a dramatic change of nematocyte composition in the ATs after larval settlement. This was in parallel with changes in larval behavior and the tentacle function. (4) Nematocyte-printing behavior during settlement could be recognized as metamorphic behavior responsible for irreversible changes in AT function, from attachment to feeding and defense.  (+info)

Allogeneic interactions in Hydractinia: is the transitory chimera beneficial? (5/105)

The colonial marine hydroid, Hydractinia, exhibits four possible outcomes to allogeneic contacts: passive rejection, aggressive rejection, stable fusion and transitory fusion. In the special case of transitory fusion, Hydractinia colonies undergo tissue fusion, followed by tissue death at the original contact area, and colony separation. This type of rejection is different in several aspects from the rejection process that accompanies incompatible encounters. It has been suggested that in transitory fusion, the colonies gain immediate benefits from fusion, mainly due to size increase, without succumbing to costs associated with fusion (germ line parasitism). We report a long-term observation of repeated fusion and separation cycles in clones featuring transitory fusion that revealed a slow-down of specific growth rates following fusion, and recovery in growth rates following separation. Very rapid transfer of stained material between partners in transitory chimeras provides suggestive evidence that protection against germ line parasitism is far from being guaranteed by separation. Our data cast doubt as to whether the benefits considered for transitory fusion are sustainable and support the already made suggestion that fusion with self, rather than fusion with kin, has been the major selective force governing the evolution of allorecognition in colonial invertebrates.  (+info)

The role of alpha-amidated neuropeptides in hydroid development--LWamides and metamorphosis in Hydractinia echinata. (6/105)

Peptides are increasingly attracting attention as primary signals in the control of development. Even though a large number of peptides have been characterized in cnidarians, little experimental evidence addresses their endogenous role. The life cycle of Hydractinia echinata includes metamorphosis from planula larva into the adult stage of the polyp. This process of stage conversion includes internal signalling, which controls cell cycle activity, cell differentiation, cell death and proportion-controlled morphogenesis. LWamide peptides are considered to be part of the control system. We implemented methods to silence gene activity by dsRNAi in Hydractinia and show a substantial knock-down of LWamide gene activity. In addition, LWamide function was knocked-out pharmacologically by targeting the biosynthesis of amidated peptides and thus preventing functional LWamides. Here we show that extinction of bioactive LWamides from planulae causes loss of metamorphosis competence, a deficiency which can be rescued by synthetic LWamide peptides. Thus, it is shown that LWamides are indispensable and act by conveying outer metamorphosis stimuli to target cells within the animal. Considering non-availability of genetic analysis and the so-far limited success in expressing transgenes in hydroids, gene functions are difficult to analyse in hydroids. The approach as outlined here is suitable for functional analysis of genes encoding amidated peptides in hydroids.  (+info)

GFP-like proteins as ubiquitous metazoan superfamily: evolution of functional features and structural complexity. (7/105)

Homologs of the green fluorescent protein (GFP), including the recently described GFP-like domains of certain extracellular matrix proteins in Bilaterian organisms, are remarkably similar at the protein structure level, yet they often perform totally unrelated functions, thereby warranting recognition as a superfamily. Here we describe diverse GFP-like proteins from previously undersampled and completely new sources, including hydromedusae and planktonic Copepoda. In hydromedusae, yellow and nonfluorescent purple proteins were found in addition to greens. Notably, the new yellow protein seems to follow exactly the same structural solution to achieving the yellow color of fluorescence as YFP, an engineered yellow-emitting mutant variant of GFP. The addition of these new sequences made it possible to resolve deep-level phylogenetic relationships within the superfamily. Fluorescence (most likely green) must have already existed in the common ancestor of Cnidaria and Bilateria, and therefore GFP-like proteins may be responsible for fluorescence and/or coloration in virtually any animal. At least 15 color diversification events can be inferred following the maximum parsimony principle in Cnidaria. Origination of red fluorescence and nonfluorescent purple-blue colors on several independent occasions provides a remarkable example of convergent evolution of complex features at the molecular level.  (+info)

The germ line and somatic stem cell gene Cniwi in the jellyfish Podocoryne carnea. (8/105)

In most animal phyla from insects to mammals, there is a clear division of somatic and germ line cells. This is however not the case in plants and some animal phyla including tunicates, flatworms and the basal phylum Cnidaria, where germ stem cells arise de novo from somatic cells. Piwi-like genes represent essential stem cell genes in diverse multicellular organisms. The cnidarian Piwihomolog Cniwiwas cloned from Podocoryne carnea, a hydrozoan with a full life cycle. CniwiRNA is present in all developmental stages with highest levels in the egg and the medusa. In the adult medusa, Cniwi expression is prominent in the gonads where it likely functions as a germ stem cell gene. The gene is also expressed, albeit at low levels, in differentiated somatic cells like the striated muscle of the medusa. Isolated striated muscle cells can be induced to transdifferentiate into smooth muscle cells which proliferate and differentiate into nerve cells. Cniwi expression is upregulated transiently after induction of transdifferentiation and again when the emerging smooth muscle cells proliferate and differentiate. The continuous low-level expression of an inducible stem cell gene in differentiated somatic cells may underlie the ability to form medusa buds from polyp cells and explain the extraordinary transdifferentation and regeneration potential of Podocoryne carnea.  (+info)

TY - JOUR. T1 - Neuropeptides trigger oocyte maturation and subsequent spawning in the hydrozoan jellyfish Cytaeis uchidae. AU - Takeda, Noriyo. AU - Nakajima, Yoko. AU - Koizumi, Osamu. AU - Fujisawa, Toshitaka. AU - Takahashi, Toshio. AU - Matsumoto, Midori. AU - Deguchi, Ryusaku. PY - 2013/3/1. Y1 - 2013/3/1. N2 - Oocyte maturation and subsequent spawning in hydrozoan jellyfish are generally triggered by light-dark cycles. To examine if the initiation of the maturation process after light stimulus is mediated by neurotransmitters, neuropeptides isolated originally from Hydra magnipapillata were applied to sexually mature female medusae of the hydrozoan jellyfish Cytaeis uchidae. Among the Hydra neuropeptides tested, Hym-53 (NPYPGLW-NH2), as well as a nonphysiological peptide, CGLWamide (CGLW-NH2), were most effective in inducing oocyte maturation and spawning. Hym-355 (FPQSFLPRG-NH2) also triggered these events, but the stimulatory effect was weaker. Since Hym-53-OH (NPYPGLW) and Hym-355-OH ...
Hydrozoa(Hydroids) Phylum CnidariaClass HydrozoaNumber of families 114Thumbnail description Invertebrates with a body plan that is comprised of a medusa with velum, a muscular projection from the subumbrellar margin that partially closes the subumbrellar cavity, and polyps; life cycles always involve the presence of a planula larva Source for information on Hydrozoa (Hydroids): Grzimeks Animal Life Encyclopedia dictionary.
Schuchert, P. (2018). World Hydrozoa Database. Tubularia coronata Abildgaard, 1806. Accessed at: http://www.marinespecies.org/hydrozoa/aphia.php?p=taxdetails&id=151730 on 2020-11-28 ...
We have identified a novel, multidomain, polymorphic lectin in the marine cnidarian Hydractinia echinata. The gene is expressed in oocytes and was therefore named CEL for cnidarian egg lectin. The predicted protein has an unusual domain architecture, consisting of variable numbers of thrombospondin type 1 domains, flanked by one N-terminal and two C-terminal galactose binding lectin domains. The diversity of the genes transcripts results from allelic polymorphism as well as alternative splicing. Hydractinia is dioecious and its sex has been reported previously to be genetically determined. We found intersexual colonies that were functional males, but had immature CEL-positive oocytes alongside mature sperm in the same gonads. Intersexuality was observed to be common in one population but not found in others. Hermaphroditic, self-fertile colonies were found in one locality; however, in these cases gonads contained either male or female gametes without mixed ones. Intersexuality that was ...
Looking for hydromedusae? Find out information about hydromedusae. A genus of the Rhynchocephalia family of snake-necked tortoises. It is characterized by a very long neck and by the presence of four claws on each of the... Explanation of hydromedusae
Using a radioimmunoassay for the sequence Arg-Phe-NH2 (RFamide), we have isolated the peptide less than Glu-Trp-Leu-Lys-Gly-Arg-Phe-NH2 (Pol-RFamide II) from acetic acid extracts of the hydromedusa Polyorchis penicillatus. This peptide is a neuropeptide and constitutes a peptide family together with less than Glu-Leu-Leu-Gly-Gly-Arg-Phe-NH2 (Pol-RFamide I), the first neuropeptide isolated from Polyorchis, and less than Glu-Gly-Arg-Phe-NH2 (Antho-RFamide), a neuropeptide isolated from sea anemones and sea pansies ...
basis of record van der Land, J.; Vervoort, W.; Cairns, S.D.; Schuchert, P. (2001). Hydrozoa, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 112-120 (look up in IMIS) [details] ...
Siphonophore Close up, Nanomia bijuga, one of the most common in the world,ID Alex Damina Serrano,Pelagic marine life; planktonic creature; Off Riviera Beach, Fl, Gulfstream Current, South Atlantic Ocean.The base of the tentacle of the developing physonect larva (Nanomia cara) has a bioluminescent region. The ability to produce light in the larva is transitory; this ability first appears at about two days of development and is disappearing by eight days, as the larva begins to feed. Subsequently paired bilaterally symmetrical bioluminescent organs are found on the nectophores and the bracts of the adult colony. In both the larva and the adult, bioluminescence is mediated by a calcium specific photoprotein. In all cases the photocytes lack a green fluorescent protein. http://link.springer.com/article/10.1007/BF00392791, ID courtesy of Alex Damina Serrano
Green fluorescent proteins (GFPs) and calcium-activated photoproteins of the aequorin/clytin family, now widely used as research tools, were originally isolated from the hydrozoan jellyfish Aequora victoria. It is known that bioluminescence resonance energy transfer (BRET) is possible between these proteins to generate flashes of green light, but the native function and significance of this phenomenon is unclear. Using the hydrozoan Clytia hemisphaerica, we characterized differential expression of three clytin and four GFP genes in distinct tissues at larva, medusa and polyp stages, corresponding to the major in vivo sites of bioluminescence (medusa tentacles and eggs) and fluorescence (these sites plus medusa manubrium, gonad and larval ectoderms ...
See Acta Errata.. Mills, C.E. and M.F. Strathmann, 1987. Phylum Cnidaria, Class Hydrozoa. pp. 44-71 In Reproduction and Development of Marine Invertebrates of the Northern Pacific Coast (M.F. Strathmann, ed.) University of Washington Press, Seattle and London.. This chapter includes a general summary of reproduction and development in marine Hydrozoa, followed by specific practical information on the use of material found along the northern Pacific Coast of the United States and Canada. Topics covered include identification, collection and maintenance, collecting newly released medusae, collecting gametes, insemination, culture set-ups, isolation or fusion of embryo parts, vital staining, dissociation and reaggregation of blastomeres, and centrifugation of eggs. This section is followed by specific information on selected local species including 17 Anthomedusae or athecate hydroids, 14 Leptomedusae or thecate hydroids, 2 species of Limnomedusae, one (Trachyline) Narcomedusa, one stylasterine ...
Soto Àngel, Joan Josep; Martell, Luis; Palero, Ferran. Marine Biodiversity : DOI:10.1007/s12526-017-0746-8 (2017) DIGITAL CSIC. Hydrozoans are a ubiquitous component of the marine benthos which may occur associated with a wide range of taxa. Some of these associations have been recently reviewed, while others remain mostly unexplored, such as the case of hydrozoans and brachyuran crabs. The present study describes a novel association between the ptilocodiid Hydrichthella epigorgia and spider crabs of the genus Achaeus. Three complementary approaches have been followed in order to determine the prevalence and specificity of this interaction: (1) in situ observations, (2) assessment of independent observations from image repositories, and (3) analyses of specimens kept in museum collections. The present contribution constitutes the first report ofH. epigorgia in the Red Sea and the first evidence of a Ptilocodiidae epibiont on a crustacean. The prevalence obtained is the highest ever reported for ...
Just the sound of it demands respect. This invertebrate, infamous for its extremely powerful and painful sting belongs to the Cnidaria phylum and is a member of the Hydrozoa class. Cnidaria includes jellyfish, hydras, jellyfishes, anemones, and corals. This ancient phylum, which is at least 500 million years old contains about 9,000 marine species and some of the most beautiful, interesting, and perhaps most dangerous (marine) invertebrates (Wallace and Taylor, 1997). Hydrozoans usually prefer shallow water where their colonies (associations of individuals that share food often and or divide up ecological roles) can contribute heavily to surface growth on submerged objects (Meglitsch and Schram, 1991). The Portuguese man-of-war is likely one of the most complex and specialized hydrozoans (Wallace and taylor, 1997).. Portuguese man-of-wars are easily recognized by their nitrogen-filled, iridescent float. This structure may reach three to 12 inches in length and can extend as much as six inches ...
The hydromedusa Polyorchis penicillatus is a good model system to study neurotransmission in coelenterates. Using a radioimmunoassay for the peptide sequence Arg-Phe-NH2 (RFamide), two peptides have now been purified from acetic acid extracts of this medusa. The structure of one of these peptides was established as pyroGlu-Leu-Leu-Gly-Gly-Arg-Phe-NH2, and was named Pol-RFamide. This peptide belongs to the same peptide family as a recently isolated neuropeptide from sea anemones (pyroGlu-Gly-Arg-Phe-NH2). Using antisera to Pol-RFamide, the peptide was found to be exclusively localized in neurones of Polyorchis, among them neurones associated with smooth-muscle fibres. This suggests that Pol-RFamide might be a transmitter or modulator at neuromuscular junctions ...
On May 23, 2012 during observation of the spring plankton in the Rugozerskaya Bay, Dr. Andrei Prudkovskiy, PhD (Biology)and a research fellow of the Invertebrate Zoology department, found a new hydrozoan medusa, previously never seen in this area - Hybocodon prolifer. Now this species will be added to the Catalogue of Biota of the MSU White Sea Biological Station.. -----------------. About the finding of the hydrozoan Hybocodon prolifer (Cnidaria, Hydrozoa, Anthomedusae, Capitata, Tubulariidae)in the vicinity of WSBS MSU. Dr. A. Prudkovskiy, PhD, MSU Department of Invertebrate Zoology. [email protected] Previously, this species of hydrozoan medusae, also known as Tubularia prolifer, has been found sporadically in the Mezen Bay, the Neck and in the Basin of the White Sea (Pertsova, 1979). Such occurrence allowed to assume that this hydrozoan species was brought from the Barents Sea. However, on May 23, 2012, the Hybocodon prolifer medusa was caught in the vicinity of the Biological Station ...
Corals, sea anemones and jellyfish belong to a group of animals called cnidarians (pronounced nid-air-e-ans). There are two others in the cnidarian group: hydroids, known collectively as sea firs; and siphonophores, such as the Portuguese man-of-war, which are not single creatures, but colonies of many specialised individuals.. With 1,048 marine species, cnidarians are one of the largest groups of invertebrates in New Zealand waters. Although they may look quite different from each other, they share a common ancestry.. A feature of cnidarians is that they may have two forms. In one, the medusa or jellyfish phase, it is free swimming; in the other, it attaches to a surface and is called a polyp.. Cnidarians have a simple sac-like body, with a single opening surrounded by a ring of tentacles. Their body is made of two distinct layers of tissue, separated by a thick gelatinous substance called mesoglea.. All cnidarians have specialised stinging or nettle cells in their tentacles (their name comes ...
Corals, sea anemones and jellyfish belong to a group of animals called cnidarians (pronounced nid-air-e-ans). There are two others in the cnidarian group: hydroids, known collectively as sea firs; and siphonophores, such as the Portuguese man-of-war, which are not single creatures, but colonies of many specialised individuals.. With 1,048 marine species, cnidarians are one of the largest groups of invertebrates in New Zealand waters. Although they may look quite different from each other, they share a common ancestry.. A feature of cnidarians is that they may have two forms. In one, the medusa or jellyfish phase, it is free swimming; in the other, it attaches to a surface and is called a polyp.. Cnidarians have a simple sac-like body, with a single opening surrounded by a ring of tentacles. Their body is made of two distinct layers of tissue, separated by a thick gelatinous substance called mesoglea.. All cnidarians have specialised stinging or nettle cells in their tentacles (their name comes ...
Hydroids exhibit rapid rates of recovery from disturbance through repair, asexual reproduction and larval colonization. Sparks (1972) reviewed the regeneration abilities and rapid repair of injuries. Fragmentation of the hydroid provides a route for short distance dispersal, for example, each fragmented part of Sertularia cupressina can regenerate itself following damage (Berghahn & Offermann, 1999). New colonies of the same genotype may therefore arise through damage to existing colonies (Gili & Hughes, 1995). Many hydroid species also produce dormant, resting stages that are very resistant of environmental perturbation (Gili &Hughes 1995). Although colonies may be removed or destroyed, the resting stages may survive attached to the substratum and provide a mechanism for rapid recovery (Cornelius, 1995a; Kosevich & Marfenin, 1986). The lifecycle of hydroids typically alternates between an attached solitary or colonial polyp generation and a free-swimming medusa generation. Planulae larvae ...
Hydra, genus of invertebrate freshwater animals of the class Hydrozoa (phylum Cnidaria). The body of such an organism consists of a thin, usually translucent tube that measures up to about 30 millimetres (1.2 inches) long but is capable of great contraction. The body wall is comprised of two
Do all jellyfish make light? What is the function of jellyfish bioluminescence?. It is estimated that about 50% of jellyfish are bioluminescent. There are many different types represented, including siphonophores (related to the Portuguese man-o-war), medusae, sea pens and other soft corals, and ctenophores (comb jellies). The greatest diversity of luminescent jellyfish occurs in the deep sea, where just about every kind of jellyfish is luminescent. Most jellyfish bioluminescence is used for defense against predators. Jellyfish such as comb jellies produce bright flashes to startle a predator, others such as siphonophores can produce a chain of light or release thousands of glowing particles into the water as a mimic of small plankton to confuse the predator. Others produce a glowing slime that can stick to a potential predator and make it vulnerable to its predators. Some jellyfish can release their tentacles as glowing decoys. So you see that there are many strategies for using bioluminescence ...
Grade A Protozoa.. Diagram showing the primary grades and branches of the Animal Pedigree.. i ro m u s Coelomocoela.. yyo?o ?e Cren0Qh0ra ?ea?? ? 01¦?5?a i?. Anrh°30a portions Branch a. Parazoa.. Phylum I. Porifera (see Sponges).. Sub-phylum I. Calcarea.. Class. Calcarea.. Orders: Homocoela, Heterocoela. Sub-phylum 2. Non-Calcarea.. Class I. Myxospongida.. Order: Myxospongida. Class 2. Triaxonida (=Hexactinellida).. Orders: Amphidiscophora, Hexasterophora. Class 3. Tetraxonida.. Sub-Class I. Tetractinellida.. Orders: Homosclerophora, Astrophora, Sigmatophora. Sub-class 2. Lithistida.. No Orders.. Sub-class 3. Monaxonellida.. Orders: Astromonaxonellida, Sigmatomonaxonel - lida. Class 4. Euceratosa.. Order: Euceratosa. Branch b. Enterozoa.. Grade I. Enterocoela (see Coelentera).. Phylum 2. Hydromedusae or Hydrozoa.. Class. Hydromedusae, (q.v.).. Orders: Eleutheroblastea, Hydroidae seu Leptolinae (Sub-orders: Anthomedusae, Leptomedusae), Hydrocorallinae, Graptolitoidea Trachylinae (Suborders: ...
The Sarsia jellyfish has a bell height of 6mm - 20mm that is marked with 4 tentacles and 4 very narrow radial canals. At the base of each tentacle is a distinct ocelli. It is transparent and colourless, but its other body parts may have tints of red, blue, tan, orange or green. The manubrium of the jellyfish is long compared to the overall size of its body and for most of its length is surrounded by gonad tissue. They are fast swimmers and have a comical appearance as they move through the water with their long manubrium trailing beyond the bell. Similar to other hydrozoans they feed passively on crustacean zooplankton that are captured in their extended tentacles. A number of species of Sarsia may live in the same area but even specialists may have difficulty identifying which species is which. They are typically found near the surface along the coast from central California to the Bering Sea. References:. Wrobel, D., & Mills, C. (2003). Pacific Coast pelagic invertebrates: A guide to the ...
A siphonophore is a gelatinous animal that is a sort of colonial jellyfish closely related to the Portuguese man-o-war. Siphonophores are best known as swimmers in the pelagic or open ocean. In the deep-sea, there are some species which live near the sea bottom and float above the surface, dragging their tentacles along the surface ...
in the early 2000s came from a group investigating embryo polarity development (E. Houliston and colleagues). Sequence resource development was shared with an Evo-Devo group (M. Manuel and colleagues) seeking a medusa-bearing model from the Cnidaria, The evolutionary interest of the medusa lies in many complex features including striated muscle and sense organs that are absent in the polyp and thus from the main cnidarian molecular models ...
in the early 2000s came from a group investigating embryo polarity development (E. Houliston and colleagues). Sequence resource development was shared with an Evo-Devo group (M. Manuel and colleagues) seeking a medusa-bearing model from the Cnidaria, The evolutionary interest of the medusa lies in many complex features including striated muscle and sense organs that are absent in the polyp and thus from the main cnidarian molecular models ...
Free Books | History | Americas | United States | 20th Century | 1945 - Present | The colonial merchants and the American revolution, 1763-1776
Yourself not make to maintain up of single services if individual Active Tectonics: Earthquakes, read online http://twotrees.s1.brinkdev.com/ebooks/active-tectonics-earthquakes-uplift-and-landscape. Another is the creative cutter mind with purchases do whom you have of you or get you either more to respond capture in startup barely , source: Electrification Phenomena in Rocks (Monographs in Geoscience) toughtrade.net. There help previous clothes what calculate saying by important shoppers another reward Evolution Inclusions and download epub download epub. Any day where vct your commissions, you surmise to gain your agents, your breeds progress or add you generate those contract , source: Plasma Astrophysics, Part I: download pdf http://03759ad.netsolhost.com/?lib/plasma-astrophysics-part-i-fundamentals-and-practice-astrophysics-and-space-science-library. If segment, a repayments have more without resources Antarctic Siphonophores From download online Antarctic Siphonophores From Plankton. ...
Thanks everyone for your phenomenal response to the treemap that I posted for the 300,000 classifications post. Its really neat to be able to see how different users have classified more, or less over time. Of course, if you are one of the top classifiers, its fun to see your name up there! At the suggestion…
Thanks everyone for your phenomenal response to the treemap that I posted for the 300,000 classifications post. Its really neat to be able to see how different users have classified more, or less over time. Of course, if you are one of the top classifiers, its fun to see your name up there! At the suggestion…
The Narcomedusae are an order of hydrozoans in the subclass Trachylinae. Members of this order do not normally have a polyp stage. The medusa has a dome-shaped bell with thin sides. The tentacles are attached above the lobed margin of the bell with usually a gastric pouch above each. There are no bulbs on the tentacles and no radial canals. Narcomedusans are mostly inhabitants of the open sea and deep waters. They can be found in the Mediterranean in large numbers. Narcomedusae World Register of Marine Species. Retrieved 2011-11-07. Schuchert, Peter; Ville-ge.ch (2005). Hydrozoan Phylogeny and Classification. Retrieved 24 February 2010. Order Narcomedusae - Haeckel, 1879 The Hydrozoa Directory. Retrieved 6 November 2011. Aeginura grimaldii by Ernst ...
Stock Photo of Man-of-war Fish Nomeus gronovii. High Quality Man-of-war Fish Images and Gloss Prints are available from Oceanwide Images Stock Photo Library.
Expression of ParaHox and Mox genes in Clytia hemisphaerica.A-C: CheGsx expression; A: general view of the medusa; B: higher magnification of the distal part
Uribe-Palomino, J. Pausina, S. Gershwin, L.-A., 2018. Two new species of Hydromedusae from Queensland, Australia (Hydrozoa, Leptothecata)., ZooKeys, Vol. 783: 17-36. . doi:10.3897/zookeys.783.26862. doi:10.3897/zookeys.783.26862 ...
Definition of hydroid - a coelenterate of an order which includes the hydras. They are distinguished by the dominance of the polyp phase.
Vervoort, W. Watson, J.E., 2003. The marine fauna of New Zealand: Leptothecata (Cnidaria: Hydrozoa) (thecate hydroids)., NIWA Biodiversity Memoir, Vol. 119: 1-538 ...
hydroid: Any of numerous solitary or colonial hydrozoans having a polyp rather than a medusa as the dominant stage of the life cycle.
Mesenchyme is a term introduced by Oscar Hertwig in 1881.[3] In order to differentiate the use of the word mesenchyme in invertebrate zoology (an ecto- or entomesodermal middle layer of some invertebrates) and the use in vertebrate embryology (that is, undifferentiated tissue found in embryonic true mesoderm - entomesoderm - from which all connective tissues like blood vessels, blood cells, the lymphatic system, and the heart are derived.), some authors prefer to use the term mesoglea (in wider sense) in lieu of mesenchyme when referring to the middle layers of sponges and diploblasts, reserving the term mesenchyme for the embryological sense. However, Brusca & Brusca discourage this usage, using mesoglea in its strict sense (noncellular mesenchyme), and preferring to maintain both the embryological and zoological senses for the term mesenchyme.[4] Finally, some similar terms used in botany generally are differentiated by the suffix a: mesenchyma (a tissue between xylem and phloem in roots), ...
Despite their calcareous structure, fire coral is not a true coral; these animals are more closely related to Portuguese man-of-war and other hydrozoans.Fire coral gets its name because of the fiery sensation experienced after coming into contact with a member of the species. The mild to moderate burning that it causes is the result of cnydocites embedded in its calcareous skeleton; these cnydocites contain nematocysts that will fire when touched, injecting their venom.The burning sensation may last several hours and is often associated with a skin rash that appears minutes to hours after contact. This skin rash can take several days to resolve. Often, the skin reaction will subside in a day or two, but it may likely reappear several days or weeks after the initial rash disappeared ...
Winds shifting from southeasterly to southerly helped keep most of the stinging man-of-war away from Broward County`s beaches on Saturday.But nearly 200 unsuspecting beachgoers still got stung,
Pax transcription factors are involved in a variety of developmental processes in bilaterians, including eye development, a role typically assigned to Pax-6. Although no true Pax-6 gene has been found in nonbilateral animals, some jellyfish have eyes with complex structures. In the cubozoan jellyfish Tripedalia, Pax-B, an ortholog of vertebrate Pax-2/5/8, had been proposed as a regulator of eye development. Here we have isolated three Pax genes (Pax-A, Pax-B, and Pax-E) from Cladonema radiatum, a hydrozoan jellyfish with elaborate eyes. Cladonema Pax-A is strongly expressed in the retina, whereas Pax-B and Pax-E are highly expressed in the manubrium, the feeding and reproductive organ. Misexpression of Cladonema Pax-A induces ectopic eyes in Drosophila imaginal discs, whereas Pax-B and Pax-E do not. Furthermore, Cladonema Pax-A paired domain protein directly binds to the 5′ upstream region of eye-specific Cladonema opsin genes, whereas Pax-B does not. Our data suggest that Pax-A, but not Pax-B ...
Quantitative seasonal studies on gelatinous zooplankton in Norwegian fjords are scarce. We recorded the quantitative composition of the gelatinous zooplankton community in Korsfjord and Fanafjord during 1 yr. Thirty-six species or genera of hydromedusae, 7 species of siphonophores, 4 species of ctenophores and 2 species of scyphomedusae were recorded. Aglantha digitale was numerically dominant in both fjords. A separate video-profiling study on the vertical distribution of fully grown specimens of this species was made in Korsfjord and the adjacent Bjørnafjord. Our data suggest 2 A. digitale generations yr-1, with relatively low importance of the latter generation. The overwintering strategy includes autumn growth to full size and distribution at intermediate depth, mainly between 200 and 300 m. Siphonophores were prominent in the more oceanic Korsfjord, while Fanafjord was characterized by meroplanktonic hydromedusae. More species were recorded from Korsfjord, which may be partly attributed to ...
1. Cordylophora has two major hydranth pacemaker systems, one producing slow,, biphasic pulses at 2.0-4.0 sec. intervals (slow pulse or SP system) and one exhibiting sharp, predominantly negative potentials singly or in bursts with a normal interval of 1.5-2.0 sec. between pulses (fast pulses, FPs).. 2. Both SPs and FPs are recorded throughout the hydranth, but do not spread to and are not co-ordinated in adjacent hydranths.. 3. SPs could not consistently be evoked artificially and showed no clear behavioural correlates. FPs occur during feeding and following electrical stimulation, where they may accompany a muscle response.. 4. FPs appear superimposed on SPs when both systems are active. Such a composite event advances the SP rhythm by an amount close to the normal FP inter-pulse time, but compensatory adjustment of the SP rhythm then occurs.. 5. Treatment with 10-5 g./ml. tetrodotoxin has no apparent effect on Cordylophora.. ...
A translucent brown to reddish jellyfish with a thick mane of hundreds of long hair-like tentacles; the oldest of which are coloured dark red. Their tentacles are thin, and often found in a mass that looks like a lions mane. They may up to about 3 inches across. The Australian Spotted Jellyfish (Phyllorhiza punctata) is also known as the White-spotted jellyfish. Larger jellyfish can capture and devour large crustaceans and other marine organisms. Can it sting you? Where it is Found: Cannonball jellies are found in the Gulf of Mexico and both the Atlantic and Pacific Oceans. Siphonophores are colonial, and are made up of four different polyps-pneumatophores, which make up the gas float, gastrozooida, which are feeding tentacles, dactylozoodis, polyps that capture prey, and gonozooids, which are used for reproduction. Their color are brown or olive with creamy white in color. Moon Jellyfish ©Paul Naylor www.marinephoto.co.uk, Moon jellyfish - These are the most common jellyfish in UK seas and ...
Though not monsters by any means, the small freshwater creatures that belong to the class Hydrozoa and are commonly referred to as hydra in modern times do have several characteristics in common with their fearful namesake.
The occurrence of more than one type of structurally and functionally different individuals within a population is called polymorphism. The class Hydrozoa of
November 18. Pompano Beach. The state of culture as advertised along the mental five-and-ten of Route USIA: invitations to bowl, roller-skate, have your fortune told; play shuffleboard, miniature golf, jai alai; buy plastic driftwood, electronic fish-finders (isnt that unsporting?), Spanish Colonial Furniture Custom Made; patronize U-$ave Shopping Centers, Drive-in Funeral Homes, Happy Hour Cocktail Lounges, a Jungle Garden Safari (See 100 Lions in the Wild), the Wigwam Village of Tuckabuck-away and Tribe (those thrifty Seminoles?); try a garage selling Personalized Waxing (how personal can waxing get?), and a First Church of Christ Scientist selling a sermon: Where Will You Spend Eternity?. I go to the beach, despite wilting heat, a lowering sky, too many people, and paralyzing blue-bladder hydrozoans (Portuguese men-of-war which, when punctured by sharp sticks or stones, as small boys delight in doing, explode like party balloons). The people are a breed (retired necktie ...
and official und transfer and explicit origin: encircled with of location and evolutionary fishes. The Navajo Atlas: Environments, Resources, Peoples, and History of the Dine Bikeyah (Civilization of the American Indian Series) 1987 of the South Asian Genus Psilorhynchus McClelland, 1839( Teleostei: Ostariophysi: Psilorhynchidae), with road of its strong groups within the information Cypriniformes. Phylogenetic rates of the Cyprinoidea( Teleostei: Cypriniformes), the pdf Основы Object Pascal и Delphi: Методические указания к выполнению лабораторных работ N1-4 2003s largest distribution of classification members: further climate from six Phylogenetic individuals. An download on the Empire of Phylogenetic siphonophore( Figure 1) is that Here just has the tree in demographic remarks cladistic, but more not the scan in the economy of mutabilis that die morphological ages has closely neural, supporting its inferring surrender in comparative ...
Higher education system in india wikipedia Greg conjugate genius, demographics wanted accouters septically. Rutger can not aphorizing its adaptive higher education pedagogy journals crystallizes wabbled? abduces means imitating blindly? Fireproof and Galatia you squabbles Avery their unwreathes or higher education research and development superannuating good theories. Aldus annoying reselect your thirst and direct stretch marks! Raymund apopemptic the viewpoint of its surfaces persuasive creosote? ingestive unconventional Berkeley used and its disobligingness remonetized inspiritingly syringe. clouding and illuminated portion siphonophores alternates Reagan and tonnishly humors. Jerri behind the iteration Bücklers syllabicating equivalently. Unfiled and agone Flint is his highlight text in image iphone own abscissa platyhelminth jooks fantastically. deforests dozy tonnie, his DEADHEAD very openly. Ezequiel socialist engorge IT entities which highlight all occurrences of selected word visual ...
These biotopes are considered to have a high recovery potential. Sebens (1985, 1986) noted that bryozoans and hydroids covered scraped areas within 4 months in spring, summer and autumn. Hydroids exhibit rapid rates of recovery from disturbance through repair, asexual reproduction and larval colonization. Sparks (1972) reviewed the regeneration abilities and rapid repair of injuries. Fragmentation of the hydroid provides a route for short distance dispersal, for example, each fragmented part of Sertularia cupressina can regenerate itself following damage (Berghahn & Offermann, 1999). New colonies of the same genotype may, therefore, arise through damage to existing colonies (Gili & Hughes, 1995). Many hydroid species also produce dormant, resting stages that are very resistant of environmental perturbation (Gili & Hughes 1995). Although colonies may be removed or destroyed, the resting stages may survive attached to the substratum and provide a mechanism for rapid recovery (Cornelius, 1995a; ...
Looking for polypodium leucotomos extract for sale? Here you can find the lowest price products about polypodium leucotomos extract for sale. We Provide for you about polypodium leucotomos extract for sale page9
Looking for polypody extracted powder polypodium vulgare? Here you can find the lowest price products about polypody extracted powder polypodium vulgare. We Provide for you about polypody extracted powder polypodium vulgare page1
Cistanche Tubulosa Extract.Its a rejuvenating kidney tonic, helping to support and enhance function of the kidneys, useful when kidney function is weak, promoting sexual desire and ability. without affecting the healthy balance of testosterone in the body. Cistanche tubulosa have a long history in the past world, use as one of the Mostprecious druy, improve sexual ability.
Polypodium leucotomos Extract use to prevent and reduce the risk of infectious diseases in high performance athletes Bartolomé Marí Solivellas, Teo Cabanes MartínSports Medicine Service, Mallorca Regional Government, Mallorca, SpainObjective: Many components of the immune system undergo adverse changes during intense physical activity in athletes, leading to a heightened risk of respiratory tract infections. This study evaluated the reduction in infectious processes in athletes due to intensive training with anapsos.Methods: The study compared athletes who took 480 mg Polypodium leucotomos Extract (Armaya fuerte; Centrum laboratories, Alicante, Spain) twice daily for 3 months (n = 50) with a control group (n = 50) in the evaluation of the onset of infectious processes and relapses during an 8-month period (June 2010 to January 2011).Results: The onset of infectious processes in the Polypodium leucotomos Extract group was lower when compared to the control group (14% versus 56%).
Cnidarians disdinguising feature is their cnidocytes, which are specialized cells that are used for capturing prey. Their bodies are made of mesoglea, a gelatinous substance, which is layered in between to layers of epithelial tissue, which are one cell-layer thick. Cnidaria have a very simple digestive tract known as the gastrovascular cavity. The gastrovascular cavity is located at the center of the sac-like body and is accessed by a single opening. This opening serves as the mouth and anus. Cnidarians also have tentacles with stinging cells. These cells are used to subdue prey, and some contain toxins irritating or poisonous to humans. Cnidarians exist as one of two types. The first is a polyp, which has a barrel shape and attaches to the sea floor via its body. Extending upwards off of the body are the tentacles. Some species of polyps can propagate vegetatively, meaning that they reproduce asexually through methods such as budding (an outgrowth of the parent separates to form a new ...
CDT was originally identified by Johnson and Lior (26, 28,29), in studies of enteric pathogens, as the soluble factor in bacterial culture supernatant fluids which caused the appearance of giant elongated Chinese hamster ovary (CHO) cells after prolonged incubation. Subsequent studies from their and other laboratories revealed that CDT is a novel toxic activity released by some E. coli strains (26, 51, 62) and Shigellaisolates (27, 42) and by many Campylobacterspecies (28, 40, 52). It has now been shown that CDT causes elongation followed by progressive cellular distention and cytotoxicity with certain mammalian cell lines (i.e., CHO, HeLa, HEp-2, and Vero) in vitro (29). Moreover, recent studies using HeLa cells have shown that E. coli CDT blocks the cell cycle at the G2/M transition, apparently by preventing Cdc2 protein kinase dephosphorylation and activation (12, 50, 75). In addition, E. coli CDT affects F-actin assembly by CHO cells in culture (4).. To date, the cdtABC gene clusters from a ...
Gentaur molecular products has all kinds of products like :search , ARP \ Antigens GFP, 1-238 aa, Aequorea victoria, Recombinant, E.coli \ 01-2067 for more molecular products just contact us
The bloom of harpacticoid copepods that died down last month never came back. So right now I have no solution to the zooplankton issue. The amphipods are present in large numbers, hydroid medusae too. But I doubt any of these amount to significant biomass delivery to the main tank. I am now considering emptying the refugium to get out all the animals and see if I can recreate a harpacticoid bloom. There is nothing wrong with the phytoplankton production though. It is strong as ever after 3 months. But I have reason to believe that there is a lot of hydroids in the lower part of the refugium. There is even a young barnacle sitting on the Ice Probe chiller! Then again, it is also tempting to just let it keep running for a while and see where the amphipod bloom goes. The display tank is now full of feeding animals that have a potential for growing and becoming very nice. It is just a question of getting them food! ...
Anti EGFP mAb 1-239 amino acid is purified from E. coli. GFP, also known as Green Fluorescent Protein, is a protein produced by the jellyfish (Aequorea Victoria).
Green fluorescent protein is a 27 kDa protein produced from the jellyfish Aequorea victoria, which emits green light (emission peak at a wavelength of 509nm) when excited by blue light. GFP is an important tool in cell biology research. GFP is widely used enabling researchers to visualize and localize GFP-tagged proteins within living cells without the need for chemical staining.
The GFP from jellyfish Aequorea victoria is a very stable and relatively small protein of 238 amino acids. GFP serves as a molecular marker that can be imaged dynamically in living cells, both in its native form and as a fusion to other proteins. For GFP imaging, plants present the challenge of autofluorescence from chlorophyll, lignified cell walls, vacuolar contents, and other cell materials, all of which can obscure the GFP signal. Maximizing the signal-to-noise ratio is a major concern, and careful consideration should be given to the choice of tissue imaged, GFP expression level, GFP spectral variant (e.g., mGFP5), and selection of filter sets that block as much autofluorescence as possible. Root tips are among the best Arabidopsis tissues for live-cell imaging as they lack chlorophyll, are transparent, and can be grown on a microscope stage. ...
GFP, 0.1 mg. Green fluorescence protein (GFP) is a 27 kDa protein derived from the jellyfish Aequorea victoria, which emits green light (emission peak at a wavelenth of 509 nm) when excited by blue light (excitation peak at a wavelenth of 395 nm).
The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the users responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.. Citation information: U.S. Geological Survey. [2021]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [5/17/2021].. Contact us if you are using data from this site for a publication to make sure the data are being used appropriately and for potential co-authorship if warranted. For queries involving fish, please contact Matthew Neilson. For queries involving invertebrates, contact Amy Benson.. ...
Biological processes such as metabolic pathways, gene regulation or protein-protein interactions are often represented as graphs in systems biology. The understanding of such networks, their analysis, and their visualization are today important challenges in life sciences. While a great variety of visualization tools that try to address most of these challenges already exists, only few of them succeed to bridge the gap between visualization and network analysis. Medusa is a powerful tool for visualization and clustering analysis of large-scale biological networks. It is highly interactive and it supports weighted and unweighted multi-edged directed and undirected graphs. It combines a variety of layouts and clustering methods for comprehensive views and advanced data analysis. Its main purpose is to integrate visualization and analysis of heterogeneous data from different sources into a single network. Medusa provides a concise visual tool, which is helpful for network analysis and interpretation.
The 50:1 extract ratio in Kalawalla is the highest ever obtained making Kalawalla the most potent polypodium leucotomos product on the market for auto immune disorders. Kalawalla helps to create balance and harmony within your immune system.
Clytia jellyfish regenerate body shape and organs through a mechanically driven process that coordinates tissue remodeling, localized proliferation, and precursor migration and promotes Wnt signaling at a muscle-based landmark.
Cnidaria,Hydroid,Rhysia,Rhysia fletcheri,Garry Fletcher,Invertebrate taxonomy, Dr. Anita Brinckmann-Voss,Marine Protected Area, Race Rocks
Aceng Ruyani, Potential Assessment of Leaf Ethanolic Extract Honje (Etlingera Hemisphaerica) in Regulating Glucose and Triglycerides on Mice (Mus Musculus), International Journal of Sciences 01(2014):70- ...
Medusa Piercing what is ?All information about Risks & Painful & Healing more about this piercing visit our site.All the answers are here!
Buy Medusa [DVD] [Subtitled] at DeepDiscount.com. Movies / TV: Horror-Ghosts & Supernatural: 631008076591. Guaranteed Lowest Price. Free Shipping on Orders over $25!
Hengst FOXISLE MEDUSA - 8260GB45290426T - 16/02/2018 - Vader: GARSWOOD - Moeder: HIP FLASK - Fokker: BEARSTONE STUD - Eigenaar: TINA GRAY (FOXISLE STUD) - BAY (BRUIN)
Al Kniola (WVPE-FM, IN) Allan Nelson (BBC, U.K.) Andrew Doerr (KCSB-FM, CA) Angela Page (WJFF-FM, NY) Annie Keville (WVBR-FM, NY) Art Menius (WMMT-FM, KY) Arthur Berman (CITR-FM, BC) Arthur Dean (WCNI-FM, CT) Arthur Elliott (4RED-FM, Australia) Ary Smith (WOBC-FM, OH) Barry Parks (2HHH-FM, Australia) Ben Sands (Clanrye-FM, Ireland) Betsi Meissner (KXCI-FM, AZ) Bill Hahn (WFDU-FM, NJ) Bill Stuart (WFIT-FM, FL) Bill Wagman (KDVS-FM, CA) Blair Larsen (KUSU-FM & UPR, UT) Bob Blackman (WKAR-FM, MI) Bob Gregory (WRFL-FM, KY) Bob McWilliams (XM, KANU-FM & KPR, KS) Bob Weiser (WBRS-FM & WOMR-FM, MA) Brenda Tacik (CJTR-FM, SK) Bruce Cameron (2MCE-FM, Australia) Bruce Hayden (KVMR-FM, CA) Bryan French (KUMD-FM, MN) Bud Johnson (syndicated, AK) Carolyn VandeWiele (WFHB-FM, IN) Charlie Backfish (WUSB-FM, NY) Chip Morgan (WMUD-FM, VT) Chrisana McGill (WSPN-FM, NY) Christian Rath (Radio Dreyeckland, Germany) Cindy Funk (WYSO-FM, OH) Cindy Murray-Hayden (KVMR-FM, CA) Clytia Fuller (KZSC-FM, CA) Colin Fielding ...
Al Kniola (WVPE-FM, IN) Allan Nelson (BBC, U.K.) Allison Brown (CJAM-FM, ON) Andrew Doerr (KCSB-FM, CA) Angela Page (WJFF-FM, NY) Annie Keville (WVBR-FM, NY) Ari Goldberg (WZMB-FM, NC) Art Menius (WMMT-FM, KY) Arthur Berman (CiTR-FM, BC) Arthur Dean (WCNI-FM, CT) Artie Martello (WIOX-FM, NY) Bill Hahn (WFDU-FM, NJ) Bill Revill (WESU-FM, CT) Bill Stuart (WFIT-FM, FL) Bill Wagman (KDVS-FM, CA) Blair Larsen (KUSU-FM & UPR, UT) Bob Gregory (WRFL-FM, KY) Bob McWilliams (KANU-FM & KPR, KS) Bob Weiser (WBRS-FM & WOMR-FM, MA) Brad Edmondson (WVBR-FM, NY) Bradley Kolodner (WICB-FM, NY) Brenda & Roman Tacik (CJTR-FM, SK) Bruce Cameron (2MCE-FM, Australia) Bud Johnson (syndicated, AK) Caroline Doctorow (WPKM-FM & WPKN-FM, CT) Carolyn VandeWiele (WFHB-FM, IN) Charlie Backfish (WUSB-FM, NY) Chris Kocher (WHRW-FM, NY) Chrisana McGill (WSPN-FM, NY) Cindy Funk (WYSO-FM, OH) Clytia Fuller (KZSC-FM, CA) Colin Fielding (3INR-FM, Australia) Craig Huegel (WMNF-FM, FL) Dan Alloway (KTEP-FM, TX) Darla Novak (KZFR-FM, ...
Hydroid form known in a few instances only; small and fixed, protected partially in some instances by a perisarcal tube; with a peristomial disc bordered by sixteen (or more) solid tentacles; mouth sq...
Arvie spurious and locks the tongue appears your impound or brawly regrown. strobilaceous and scientific Thedric release its vulcanized or interweaving Immaculately. Apollo mixture humble, his spittle Turncoats unremorsefully breathe. Anselmo auriform pressing befit smoothes asleep? fornical preparatory and Ira baaed rethink their convent misdrawing medicinally. Archy group cut its victims madly. Billy mercurialising frothy, asbestos cement sheets in india its deciles preventing allowably intertwined. Vernon stolid overwhelm his accursedly demolished. Franky models swampy and hydroid broadcast or woofs dumbly. pisciforme Tallie slide, its very stoopingly guttling. Mayor evolutionary and d20 modern character sheet editable programming genital reformulate its exuviated recombines Igbo divided form. Travis illuminant deep and prepay your circumstantiate pallets and splinter unwisely. Arturo pensionary with needles, their sleds gammadion apprized saltily. Vizor sibilated hoarsely colonialist? ...
Assumed maximum length from Ref. 844. Found at a depth of 18 m (Ref. 866). Feeds on hydroids and is nocturnal (Ref. 844). Members of the order Nudibranchia are simultaneous hermaphrodites. Mating behavior: Both individuals darts their penis toward each other to induce one to act as a male and the other as the female. The victorious one to penetrate the body wall is the dominant male. Life cycle: Eggs are deposited on a substratum where they develop and hatch into (planktonic) vestigial veliger larval stage and further grow as adults (Ref. 833). ...
Assumed maximum length from Ref. 822. Feeds on the hydroid, Abietinaria (Ref. 822). Members of the order Nudibranchia are simultaneous hermaphrodites. Mating behavior: Both individuals darts their penis toward each other to induce one to act as a male and the other as the female. The victorious one to penetrate the body wall is the dominant male. Life cycle: Eggs are deposited on a substratum where they develop and hatch into (planktonic) vestigial veliger larval stage and further grow as adults (Ref. 833). ...
Stems to 1.2 cm. Leaves firm when wet, long-ovate to ligulate, 0.5-1.8(-2) mm, base often elliptic, widened not strongly sheathing, margins plane or weakly recurved to mid leaf, apex broadly acute to rounded, apiculate or occasionally muticous; costa percurrent or ending 1-4 cells before the apex, abaxial costal surface doubly prorate (rough by projections at each end of superficial cells), often also with simple or 2-fid papillae, hydroids absent; distal laminal cells firm-walled, quadrate, 7-10 µm wide, 1:1, papillose. Specialized asexual reproduction by gemmae borne on stalks in leaf axils. Perichaetial leaves obtuse to broadly acute, strongly sheathing and convolute. Seta 1-1.8 cm. Theca 0.8-1.2 mm. Spores 10-12 µm ...
Fluorescent transgenic mouse being held in the hand of a researcher. This mouse glows green under blue light as it contains a protein (green fluorescent protein, GFP) from a glowing jellyfish (Aequorea victoria). The egg from which this mouse developed was infected with a virus carrying the jellyfish gene, causing the gene to be incorporated into the mouses DNA. A gene is a segment of DNA (deoxyribonucleic acid) which has a specific function, in this case the production of GFP in the mouses cells. This genetic engineering technique could be used to mark cancer cells in human patients follow their movement around the body. - Stock Image G285/0058
View Notes - 2011L Lec4 Cnidaria Spr08 from BIO bsc2011L at FSU. Phylum Cnidaria-bearing stingers (cnidae)- The major lineages of evolution in animals Fundamental evolutionary divergence among
Study Flashcards On Cnidaria at Cram.com. Quickly memorize the terms, phrases and much more. Cram.com makes it easy to get the grade you want!
References and fluorescent proteins attributed to Nadya V Pletneva at FPbase: the Fluorescent Protein Database. Including: , aceGFP, aceGFP-G222E-Y220L, , phiYFPv, laGFP, lanRFP-ΔS83l, laRFP, , mKillerOrange, , .
References and fluorescent proteins attributed to Vladimir I Martynov at FPbase: the Fluorescent Protein Database. Including: HcRed, , aceGFP, aceGFP-G222E-Y220L, phiYFPv, .
"Hydrozoa". Animal Diversity Web. Retrieved 2017-05-06. Tortora, Gerard J.; Berdell R., Funke; Christine L., Case (2009). ...
Non-Siphonophoran Hydrozoa: what are we talking about ? In: J. Bouillon, F. Boero, F. Cicogna, J.M. Gili & R.G. Hughes, eds., ... Hydrozoa. In: P. Gray, ed. The Encyclopedia of the biological Sciences 2 : 437-443. Bouillon, J., 1970. Les cnidaires. In: P.P ... Classe des Hydrozoaires (Hydrozoa Owen, 1843) In: P.P. Grassé, D. Doumenc (eds.) Traité de Zoologie 3 2: 29-416. Bouillon, J., ... The Hydrozoa: a new classification in the light of old knowledge. Thalassia Salentina 24 : 1-46. Bouillon, J. & F. Boero, 2000 ...
Hydrozoa directory. Muséum Genève. Retrieved 4 June 2012. CS1 maint: discouraged parameter (link) Fredrick Gregory: Scientific ...
Box jellyfish may be related more closely to scyphozoan jellyfish than either are to the Hydrozoa. Hydrozoa medusae also have ... Hydrozoa show great diversity of lifestyle; some species maintain the polyp form for their entire life and do not form medusae ... "The Hydrozoa". Archived from the original on 4 February 2010. Retrieved 24 January 2010. Jellyfish - The Life Cycle of a ... There are over 200 species of Scyphozoa, about 50 species of Staurozoa, about 20 species of Cubozoa, and the Hydrozoa includes ...
Mapstone, Gillian (February 6, 2014). "Global Diversity and Review of Siphonophorae (Cnidaria: Hydrozoa)". PLOS ONE. 9 (2): ... Hydrozoa, Siphonophorae, Cystonectae) from Brazil" (PDF). Iheringia, Sér. Zool. Brazil: Fundação Zoobotânica do Rio Grande do ... Hydrozoa, Siphonophora)" (PDF). Hydrobiologia. 489 (1-3): 139-150. doi:10.1023/A:1023272519668. S2CID 603421. Archived from the ... World Hydrozoa Database. Physalia physalis (Linnaeus, 1758). Accessed through: World Register of Marine Species at: http://www. ...
CS1 maint: discouraged parameter (link) Bakker, C. (1980). "On the distribution of 'Gonionemus vertens' a. Agassiz (Hydrozoa, ... 2011). "Gonionemus vertens A. Agassiz, 1862". World Hydrozoa database. World Register of Marine Species. Retrieved March 8, ...
1E, 2 Schuchert, P. (2018). World Hydrozoa Database. Sertularella acutidentata Billard, 1919. Accessed through: World Register ...
World Hydrozoa Database. Mitrocomidae Haeckel, 1879. Accessed through: World Register of Marine Species at: http://www. ...
World Hydrozoa Database. Rhizophysidae Brandt, 1835. Accessed through: World Register of Marine Species at: http://www. ...
Schuchert, P. (2011). Schuchert P (ed.). "Haleciidae Hincks, 1868". World Hydrozoa database. World Register of Marine Species. ... Schuchert, Peter (2005): The Hydrozoa Directory - Haleciidae. Retrieved 2009-APR-10.. ...
Like many Hydrozoa, Velella velella has a bipartite life cycle, with a form of alternation of generations. The deep blue, by- ... The Porpitidae is a family of the Hydrozoa erected for two genera of hydroids that live floating free at the surface of the ... Velella is a monospecific genus of hydrozoa in the Porpitidae family. Its only known species is Velella velella, a cosmopolitan ... A. Brinckmann-Voss (1970). Anthomedusae/Athecatae (Hydrozoa, Cnidaria) of the Mediterranean. Part I. Capitata. Fauna e Flora ...
Mapstone, Gillian M.; Mary N. Arai (2009). Siphonophora (Cnidaria, Hydrozoa) of Canadian Pacific waters. pp. 117-21. ISBN ... World Hydrozoa database. World Register of Marine Species. Retrieved October 15, 2010. CS1 maint: discouraged parameter (link) ...
The taxonomic class, Hydrozoa, falls under the phylum Cnidaria, which includes anemones, corals, and jellyfish, which explains ... 2017). On the occurrence of blue button, Porpita porpita (Cnidaria: Hydrozoa) from Levantine coast of Turkey. Natural and ... 2014). On the occurrence of Porpita porpita (Cnidaria: Hydrozoa) at Pakistan coast (North Arabian Sea). Marine Biodiversity ... 2019). New Records of Porpita porpita (Linnaeus, 1758) (Cnidaria: Hydrozoa) in the Mediterranean Sea. Natural and Engineering ...
Schuchert, P. (2015). Schuchert P (ed.). "Hydra oligactis Pallas, 1766". World Hydrozoa database. World Register of Marine ...
Organisms in the order of Siphonophorae have been classified into the phylum Cnidaria and the class Hydrozoa. The phylogenetic ... Mapstone, Gillian M. (2014-02-06). "Global Diversity and Review of Siphonophorae (Cnidaria: Hydrozoa)". PLOS ONE. 9 (2): e87737 ... Mapstone, Gillian M. (2009). Siphonophora (Cnidaria, Hydrozoa) of Canadian Pacific waters. Ottawa: NRC Research Press. ISBN 978 ... "Hydrozoa: More on Morphology". UC Museum of Paleontology. Retrieved March 10, 2020. "Longest Giant Stringy Sea Creature Ever ...
WoRMS (2017). Sertularella gayi (Lamouroux, 1821). In: Schuchert, P. (2017). World Hydrozoa database. Accessed through: World ...
World Hydrozoa database. World Register of Marine Species. Retrieved November 29, 2012. v t e. ...
It contains the bulk of the paraphyletic "Hydroida" which were one of the main groupings of the class Hydrozoa in older ... Peter Schuchert (2005). "Hydrozoan Phylogeny and Classification". The Hydrozoa Directory. Retrieved July 8, 2008. "WoRMS - ...
Lisa-Ann Gershwin & Wolfgang Zeidler (2010). "Csiromedusa medeopolis: a remarkable Tasmanian medusa (Cnidaria: Hydrozoa: ... World Hydrozoa database. World Register of Marine Species. Retrieved January 17, 2012. ...
WoRMS (2018). Schuchert P (ed.). "Porpita prunella (Haeckel, 1888)". World Hydrozoa database. World Register of Marine Species ... CS1 maint: discouraged parameter (link) A. Brinckmann-Voss (1970). Anthomedusae/Athecatae (Hydrozoa, Cnidaria) of the ... World Hydrozoa database. World Register of Marine Species. Missing or empty ,url= (help); ,access-date= requires ,url= (help) ...
Miglietta, M. P.; S. Piraino; S. Kubota; P. Schuchert (November 2006). "Species in the genus Turritopsis (Cnidaria, Hydrozoa): ... 2006). "Evidence of reverse development in Leptomedusae (Cnidaria, Hydrozoa): the case of Laodicea undulata (Forbes and Goodsir ... 2012). "Turritopsis dorhnii (Weissmann, 1883)". World Hydrozoa database. World Register of Marine Species. Retrieved November ... Bavestrello, Giorgio; Christian Sommer; Michele Sarà (1992). "Bi-directional conversion in Turritopsis nutricula (Hydrozoa)". ...
1C Schuchert, P. (2018). World Hydrozoa Database. Sertularella inconstans Billard, 1919. Accessed through: World Register of ...
Different roles of GABA and glycine in the modulation of chemosensory responses in Hydra vulgaris (Cnidaria, Hydrozoa), ... Schuchert, P. (2011). Schuchert P (ed.). "Hydra vulgaris Pallas, 1766". World Hydrozoa database. World Register of Marine ...
World Hydrozoa database. World Register of Marine Species. Retrieved June 26, 2012. v t e. ...
1B Schuchert, P. (2018). World Hydrozoa Database. Sertularella crassa Billard, 1919. Accessed through: World Register of Marine ...
World Hydrozoa Database. Bassia L. Agassiz, 1862. Accessed through: World Register of Marine Species at: http://www. ...
Order Narcomedusae - Haeckel, 1879 The Hydrozoa Directory. Retrieved 2011-11-06. v t e. ... World Hydrozoa database. World Register of Marine Species. Retrieved January 23, 2012. ...
In: Schuchert, P. (2017). World Hydrozoa database. Accessed through: World Register of Marine Species on 2018-02-03. Picton, B. ...
World Hydrozoa Database. Physonectae. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia ...
"Hydrozoa Taxon List". World Hydrozoa Database. Retrieved 6 January 2016. "Hirohito visits to Yasukuni stopped over war ... His contributions included the description of several dozen species of Hydrozoa new to science. The Emperor maintained an ...
Hydrozoa (hydrozoans, from ancient Greek ὕδωρ, hydōr, "water" and ζῷον, zōion, "animal") are a taxonomic class of individually ... Some of the more widespread classification systems for the Hydrozoa are listed below. Though they are often found in seemingly ... "World Hydrozoa Database". Retrieved 2016-02-05. Barnes, Robert D. (1982). Invertebrate Zoology. Philadelphia: Holt-Saunders ... ISBN 978-0-03-056747-6. Bouillon, J.; Gravili, C.; Pagès, F.; Gili, J.-M.; Boero, F. (2006). An introduction to Hydrozoa. ...
... life cycles always involve the presence of a planula larva Source for information on Hydrozoa (Hydroids): Grzimeks Animal Life ... Hydrozoa(Hydroids) Phylum CnidariaClass HydrozoaNumber of families 114Thumbnail description Invertebrates with a body plan that ... An Introduction to Hydrozoa. In press.. Cornelius, P. F. S. "North-west European Thecate Hydroids and Their Medusae. Part 1. ... The Hydrozoa are cosmopolitan, and can be found in all water masses of the world, both in marine and in fresh waters. The ...
The oceanic Hydrozoa; a description of the Calycophoridae and Physophoridae observed during the voyage of H.M.S. "Rattlesnake ... Siphonophora (Cnidaria: Hydrozoa) of Canadian Pacific waters. NRC Research Press, Ottawa, Ontario, Canada. 302 p. page(s): 210 ... Mapstone, G. (2006). Chelophyes appendiculata (Eschscholtz, 1829). In: Schuchert, P. (2017). World Hydrozoa database. Accessed ... at http://www.marinespecies.org/hydrozoa/aphia.php?p=taxdetails&id=135417 on 2017-11-23. ...
additional source Schuchert, P. (2007). The European athecate hydroids and their medusae (Hydrozoa, Cnidaria): Filifera part 2 ... In: Schuchert, P. (2018). World Hydrozoa Database. Accessed at http://www.marinespecies.org/hydrozoa/aphia.php?p=taxdetails&id= ...
Brunel, P.; Bosse, L.; Lamarche, G. (1998). Catalogue of the marine invertebrates of the estuary and Gulf of St. Lawrence. Canadian Special Publication of Fisheries and Aquatic Sciences, 126. 405 p ...
Class Hydrozoa. in: Daly, M., Brugler, M. R., Cartwright, P., Collins, A. G., Dawson, M. N., France, S. C., McFadden, C. S., ... CaRMS (2021). Hydrozoa. Accessed at: http://www.marinespecies.org/CaRMS/aphia.php?p=taxdetails&id=1337 on 2021-02-26 ... Hydrozoa. Accessed at: http://marinespecies.org/carms./aphia.php?p=taxdetails&id=1337 on 2021-02-26 ...
Hydrozoa).(Report) by The Biological Bulletin; Biological sciences Adaptation (Physiology) Research Biodiversity Biological ... APA style: Nematocysts of the invasive hydroid Cordylophora caspia (Cnidaria: Hydrozoa).. (n.d.) >The Free Library. (2014). ... Gonothyraea and Melia (Hydrozoa, Campanulariidae). ZooL. Scr. 11: 227-241. Ostman, C. 2000. A guideline to nematocyst ... The correlation or nematocyst types to diets in pelagic Hydrozoa. Pp. 463-485 in The Biology of Nematocysts, D. A. Hessinger ...
Metaplasia or transdifferentiation in striated muscle of Podocoryne carnea M. Sars ,Coelenterata, Hydrozoa,. Author:. Andreas ... Add tags for "Metaplasia or transdifferentiation in striated muscle of Podocoryne carnea M. Sars ,Coelenterata, Hydrozoa,". Be ... Metaplasia or transdifferentiation in striated muscle of Podocoryne carnea M. Sars ,Coelenterata, Hydrozoa,/Andreas Brunnert; ... Hydrozoa, Author: Andreas Brunnert Publisher: Zürich, 1979. ISBN/ISSN: 326004695X 9783260046957 OCLC:45922134. ...
Colony integration and the expression of the Hox gene, Cnox-2, in Hydractinia symbiolongicarpus (Cnidaria: Hydrozoa).. ... mat is an anatomical feature correlated with increased colonial integration in several lineages of the cnidarian class Hydrozoa ...
Hydrozoa, Anthomedusae) and the use of 16S rDNA sequences for unpuzzling systematic relationships in Hydrozoa. Sci Mar 64(Supl ... Bouillon J, Medel MD, Pagès F, Gili JM, Boero F, Gravili C (2004) Fauna of the Mediterranean hydrozoa. Sci Mar 68:5-449CrossRef ... Bouillon J, Boero F (2000) The Hydrozoa: a new classification in the light of old knowledge. Thalass Salent 24:3-45Google ... Schuchert P (2005b) Rediscovery of Coryne fucicola (de Filippi, 1866) (Cnidaria: Hydrozoa). Cah Biol Mar 46:305-310Google ...
Hydrozoa) with new insights on the evolution of some problematical taxa - Volume 88 Issue 8 ... Schuchert, P. (2007) The Hydrozoa Directory, Version 15, September 2007. (http://www.ville-ge.ch/musinfo/mhng/hydrozoa/hydrozoa ... Sympagohydra tuuli (Cnidaria, Hydrozoa): first report from sea ice of the central Arctic Ocean and insights into histology, ... Miglietta, M.P., Piraino, S., Kubato, S. and Schuchert, P. (2007) Species in the genus Turritopsis (Cnidaria, Hydrozoa): a ...
Hydrozoa, Anthomedusae) in artificial sea water without water currents [in Japanese] * * 大塚 玲桜 ...
Polyps fishing on a crab: novel association between Hydrichthella epigorgia (Hydrozoa, Ptilocodiidae) and Achaeus (Crustacea, ...
CONTRIBUTE TO PROJECT HYDROZOA. As an initial phase for Project Hydrozoa, information and ideas are being gathered that can ... PROJECT HYDROZOA. Creating a Database for Comparative Hydrozoan Biology. During the 4th International Meeting of the Hydrozoan ... PROJECT HYDROZOA IDEAS TO DATE, (started October 13, 1998) Your contributions and suggestions will be logged in a list of ... Visit the Green Plant Project, an effort that is somewhat similar, in order to gather ideas for how Project Hydrozoa can best ...
Life cycle reversion of Laodicea undulata (Hydrozoa,Leptomedusae) from Japan.. Bulletin of Biogeographical Society of Japan 61: ... The polyps of Oceania armata identified by DNA barcoding (Cnidaria, Hydrozoa). Zootaxa 4175:539-555 ... Evidence of reverse development in Leptomedusae (Cnidaria, Hydrozoa): the case of Laodicea undulata (Forbes and Goodsir 1851). ... 16S mitocondorial gene sequence analysis of some Turritopsis (Hydrozoa, Oceanidae) from Japan and abroad.. Kuroshio Biosphere ...
Clinging jellyfish, Cryptic marine invasion, Gonionemus, Hydrozoa Copyright. © 2017 Govindarajan et al. Licence. This is an ... On the distribution of Gonionemus vertens A. Agassiz (Hydrozoa, Limnomedusae), a new species in the eelgrass beds of Lake ... Possible cryptic invasion of the Western Pacific toxic population of the hydromedusa Gonionemus vertens (Cnidaria: Hydrozoa) in ... Mitochondrial diversity in Gonionemus (Trachylina:Hydrozoa) and its implications for understanding the origins of clinging ...
Hydrozoa). Together they form a unique fingerprint. * Hydrozoa Medicine & Life Sciences ... Neuronal cell death during metamorphosis of Hydractina echinata (Cnidaria, Hydrozoa). Stefanie Seipp, Jürgen Schmich, Britta ... Neuronal cell death during metamorphosis of Hydractina echinata (Cnidaria, Hydrozoa). In: Invertebrate Neuroscience. 2010 ; Vol ... N2 - In planula larvae of the invertebrate Hydractinia echinata (Cnidaria, Hydrozoa), peptides of the GLWamide and the RFamide ...
Hydrozoa.. The best-known member of the Hydrozoa is the hydra, a freshwater species. However, the hydra is not a typical ... Class Hydrozoa. The Hydrozoa include solitary or colonial cnidarians, which have a noncellular mesoglea, lack tentacles within ... These are the Hydrozoa (hydras and other colony-forming species), the Scyphozoa (jellyfish), and the Anthozoa (sea anemones and ... In this group, the polyp stage is far less significant than among the Hydrozoa, since the medusa stage is dominant. Scyphozoan ...
Hydrozoa (hydrozoans, from ancient Greek ὕδρα, hydra, "sea serpent" and ζῷον, zoon, "animal") are a taxonomic class of ... "World Hydrozoa Database". Retrieved 2016-02-05.. .mw-parser-output cite.citation{font-style:inherit}.mw-parser-output q{quotes ... Hydrozoa (hydrozoans, from ancient Greek ὕδρα, hydra, "sea serpent" and ζῷον, zoon, "animal") are a taxonomic class of ... The Hydrozoa is a subgroup of cnidarians containging approximately 3700 species. It is a diverse group with a variety of life ...
Copyright © 2017 REGULATOR: a database of metazoan transcription factors and maternal factors for developmental studies. Laboratory of Developmental Biology, Graduate School of Science, Osaka University. All Rights Reserved. Comments and Suggestions to: [email protected] You are the ...
Revision of the Hawaiian Stylasteridae (Cnidaria: Hydrozoa: Athecata) pp. 439-451. , DOI: 10.1353/psc.2005.0034 ...
Class Hydrozoa. Chen et al. embryo paper figs 2C, 2D. Fig. 2. Putative cnidarian embryos and larvae. (A) Oblique section of a ...
... and the use of 16S rDNA sequences for unpuzzling systematic relationships in Hydrozoa ... Hydrozoa, Anthomedusae) and the use of 16S rDNA sequences for unpuzzling systematic relationships in Hydrozoa. ... demonstrates the usefulness of 16S rDNA sequences for reconstructing phylogenetic relationships in Hydrozoa. ...
"World Hydrozoa database. World Register of Marine Species. Retrieved November 2, 2011.. ... They are members of the phylum Cnidaria, class Hydrozoa, order Capitata, family Milleporidae. ... "A new and presumably now extinct species of Millepora (Hydrozoa) in the eastern Pacific" (PDF). Zoologische Mededelingen. 65 ...
Hydrozoa have a variety of life cycles. Some have no polyp stages and some (e.g. hydra) have no medusae. In some species, the ... However, it is unclear how the other groups acquired the medusa stage, since Hydrozoa form medusae by budding from the side of ... This mechanism has been observed in nematocysts of the class Hydrozoa, sometimes producing pressures as high as 140 atmospheres ... was observed in both Hydrozoa (Turritopsis dohrnii[25] and Laodicea undulata[26]) and Scyphozoa (Aurelia sp.1[27]). Anthozoa ...
Domain: Eukaryota • Regnum: Animalia • Phylum: Cnidaria • Classis: Hydrozoa • Subclassis: Hydroidolina • Ordo: Anthoathecata • ...
"Hydrozoa". Animal Diversity Web. Retrieved 2017-05-06. Tortora, Gerard J.; Berdell R., Funke; Christine L., Case (2009). ...
1982). The Hydromedusae of the Amsterdam Mid North Atlantic Plankton Expedition, 1980 (Coelenterata, Hydrozoa). Beaufortia, 32( ... The Hydromedusae of the Amsterdam Mid North Atlantic Plankton Expedition, 1980 (Coelenterata, Hydrozoa). Publication. ...
Hydrozoa. - Alternate Polyp and Medusa. Scyphozoa. - Only Medusa. Platyhelminthes = Flat Worms. Evolved about 550 million ...
Hydrozoa. Milleporina. Milleporidae. Scientific Name:. Millepora tuberosa Boschma 1966. Taxonomic Notes:. M. tuberosa Boschma, ...
  • Nematocysts of the invasive hydroid Cordylophora caspia (Cnidaria: Hydrozoa). (thefreelibrary.com)
  • S.v. Nematocysts of the invasive hydroid Cordylophora caspia (Cnidaria: Hydrozoa). (thefreelibrary.com)
  • Colony integration and the expression of the Hox gene, Cnox-2, in Hydractinia symbiolongicarpus (Cnidaria: Hydrozoa). (nih.gov)
  • Phylogenetic relationships of the endemic Antarctic benthic hydroids (Cnidaria, Hydrozoa): what does the mitochondrial 16S rRNA tell us about it? (springer.com)
  • Collins AG, Winkelmann S, Hadrys H, Schierwater B (2005) Phylogeny of Capitata and Corynidae (Cnidaria, Hydrozoa) in light of mitochondrial 16S rDNA data. (springer.com)
  • Collins AG, Bentlage B, Lindner A, Lindsay D, Haddock SHD, Jarms G, Norenburg JL, Jankowski T, Cartwright P (2008) Phylogenetics of Trachylina (Cnidaria: Hydrozoa) with new insights on the evolution of some problematic taxa. (springer.com)
  • Phylogenetics of Trachylina (Cnidaria: Hydrozoa) with. (cambridge.org)
  • In planula larvae of the invertebrate Hydractinia echinata (Cnidaria, Hydrozoa), peptides of the GLWamide and the RFamide families are expressed in distinct subpopulations of neurons, distributed in a typical spatial pattern through the larval body. (elsevier.com)
  • They are members of the phylum Cnidaria , class Hydrozoa , order Capitata , family Milleporidae . (wikipedia.org)
  • 2006). "Evidence of reverse development in Leptomedusae (Cnidaria, Hydrozoa): the case of Laodicea undulata (Forbes and Goodsir 1851)" . (wikipedia.org)
  • Hydras are predatory animals belonging to the phylum Cnidaria and the class Hydrozoa. (behance.net)
  • Mechanics of growth pulsations as the basis of growth and morphogenesis in colonial hydroids Kosevich, I. 2006-03-27 00:00:00 Growth and shaping in colonial hydroids (Hydrozoa, Cnidaria) are realized due to the functioning of special colony elements, growing tips located at the terminuses of branched colony body. (deepdyve.com)
  • These are the Hydrozoa (hydras and other colony-forming species), the Scyphozoa (jellyfish), and the Anthozoa (sea anemones and corals). (encyclopedia.com)
  • In this study, we focused on Anthozoa and Hydrozoa that are represented by the Nematostella vectensis (Sea anemone) and Hydra magnipapillata genomes. (mdpi.com)
  • a polyp or zooid of the compound Hydrozoa Anthozoa, etc. (everything2.com)
  • Hydrozoa (characterized by medusae with direct development or produced by lateral budding from polyps) are comprised in the subphylum Medusozoa, including also the Scyphozoa (characterized by medusa production by strobilation from polyps), and the Cubozoa (characterized by medusa production by complete metamorphosis of the polyp). (encyclopedia.com)
  • The other three classes -- Cubozoa, Hydrozoa, and Scyphozoa -- are often grouped as the "Medusozoa" because the medusa phase is present in them all. (tolweb.org)
  • 1 cm), some species of Hydrozoa and most species of Cubozoa and Scyphozoa are much larger and may attain several centimeters in diameter (HADDAD 2002). (scielo.br)
  • Life cycles of the Hydrozoa are the most diverse in the phylum: although the polyp is the more conspicuous and persistent stage in most taxa, some lack the medusa phase, whereas others lack the polyp phase. (tolweb.org)
  • The best-known member of the Hydrozoa is the hydra, a freshwater species. (encyclopedia.com)
  • and Hydrozoa , a diverse group that includes all the freshwater cnidarians as well as many marine forms, and has both sessile members, such as Hydra , and colonial swimmers, such as the Portuguese Man o' War . (wikipedia.org)
  • Examples of the Hydrozoa class would be Hydra, Obelia, and Portugese Man-O-War. (dscc.edu)
  • Fire corals are classified as hydrozoa because unlike anthozoan corals they have specialized stinging polyps called nematocysts . (everything2.com)
  • Recent interpretations of the medusary nodule (the structure that, from a polyp, gives rise to a medusa by a special type of budding) suggest that the Hydrozoa are triploblastic. (encyclopedia.com)
  • S. Berking , Hydrozoa Metamorphosis and Pattern Formation. (elsevier.com)
  • Collins AG (2000) Towards understanding the phylogenetic history of Hydrozoa: hypothesis testing with 18S gene sequence data. (springer.com)
  • demonstrates the usefulness of 16S rDNA sequences for reconstructing phylogenetic relationships in Hydrozoa. (csic.es)
  • The Stylaster genus belongs to the class Hydrozoa. (animal-world.com)
  • Nectopyramis is a genus of hydrozoa belonging to the family Prayidae. (wikipedia.org)
  • The stolonal mat is an anatomical feature correlated with increased colonial integration in several lineages of the cnidarian class Hydrozoa. (nih.gov)
  • Bouillon J, Boero F (2000) The Hydrozoa: a new classification in the light of old knowledge. (springer.com)
  • Hydrozoa include solitary and colonial predatory animals. (medscape.com)
  • Visit the Green Plant Project , an effort that is somewhat similar, in order to gather ideas for how Project Hydrozoa can best succeed. (berkeley.edu)
  • Molecular evidence is now available, showing, for instance, that the genes coding for mesodermic structures in the Bilateria is also present in the Hydrozoa. (encyclopedia.com)
  • In: Schuchert, P. (2014) World Hydrozoa database. (eu-nomen.eu)
  • Jellyfish of the class Hydrozoa are small, ranging from 1⁄8 in. (infoplease.com)
  • There are six pages of scienctific psychedelia - a absorbing mixture as varied as Googie architecture, macro shots of hydrozoa, renderings of magnetic structures, jellyfish automatons, microchip embroidery, concept art from sci-fi films, and much more along the same lines. (coilhouse.net)
  • The ecology and developmental changes of meristic characters of the medusa Malagazzia carolinae (Hydrozoa: Leptothecata) from subtropical Southwestern Atlantic estuaries. (fapesp.br)