Acanthocephala: A phylum of parasitic worms, closely related to tapeworms and containing two genera: Moniliformis, which sometimes infects man, and Macracanthorhynchus, which infects swine.Helminthiasis, Animal: Infestation of animals with parasitic worms of the helminth class. The infestation may be experimental or veterinary.Dogs: The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065)PeruMoniliformis: A genus of roundworms of the phylum Acanthocephala, parasitic in rats, mice, hamsters, dogs and cats. Occasional infection in man produces inflammation and ulceration of the intestinal mucosa.Bonding, Human-Pet: The emotional attachment of individuals to PETS.Dog Diseases: Diseases of the domestic dog (Canis familiaris). This term does not include diseases of wild dogs, WOLVES; FOXES; and other Canidae for which the heading CARNIVORA is used.Phylogeny: The relationships of groups of organisms as reflected by their genetic makeup.Trees: Woody, usually tall, perennial higher plants (Angiosperms, Gymnosperms, and some Pterophyta) having usually a main stem and numerous branches.Plant Leaves: Expanded structures, usually green, of vascular plants, characteristically consisting of a bladelike expansion attached to a stem, and functioning as the principal organ of photosynthesis and transpiration. (American Heritage Dictionary, 2d ed)Colon, Descending: The segment of LARGE INTESTINE between TRANSVERSE COLON and the SIGMOID COLON.Quality of Life: A generic concept reflecting concern with the modification and enhancement of life attributes, e.g., physical, political, moral and social environment; the overall condition of a human life.Electronic Mail: Messages between computer users via COMPUTER COMMUNICATION NETWORKS. This feature duplicates most of the features of paper mail, such as forwarding, multiple copies, and attachments of images and other file types, but with a speed advantage. The term also refers to an individual message sent in this way.Molecular Sequence Data: 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.Esocidae: A family of freshwater fish of the order ESOCIFORMES, comprising the pikes, inhabiting the waters of the Northern Hemisphere. There is one genus, Esox, with five species: northern pike, grass pickerel, chain pickerel, muskellunge, and Amur pike.ItalyFish Diseases: Diseases of freshwater, marine, hatchery or aquarium fish. This term includes diseases of both teleosts (true fish) and elasmobranchs (sharks, rays and skates).Intestines: The section of the alimentary canal from the STOMACH to the ANAL CANAL. It includes the LARGE INTESTINE and SMALL INTESTINE.Rotifera: A class of minute animals of the phylum Aschelminthes.Encyclopedias as Topic: 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)Amber: A yellowish fossil resin, the gum of several species of coniferous trees, found in the alluvial deposits of northeastern Germany. It is used in molecular biology in the analysis of organic matter fossilized in amber.Zooplankton: Minute free-floating animal organisms which live in practically all natural waters.Dominican Republic: A republic in the Greater Antilles in the West Indies. Its capital is Santo Domingo. With Haiti, it forms the island of Hispaniola - the Dominican Republic occupying the eastern two thirds, and Haiti, the western third. It was created in 1844 after a revolt against the rule of President Boyer over the entire island of Hispaniola, itself visited by Columbus in 1492 and settled the next year. Except for a brief period of annexation to Spain (1861-65), it has been independent, though closely associated with the United States. Its name comes from the Spanish Santo Domingo, Holy Sunday, with reference to its discovery on a Sunday. (From Webster's New Geographical Dictionary, 1988, p338, 506 & Room, Brewer's Dictionary of Names, 1992, p151)Hypermastigia: A class of endosymbiont EUKARYOTES, in the group PARABASALIDEA, that are obligate mutualists in the digestive tracts of wood-eating insects. Hypermastigotes produce CELLULASE that breaks down the cellulose in wood so that insects can metabolize it.Isoptera: An order of insects, restricted mostly to the tropics, containing at least eight families. A few species occur in temperate regions of North America.PhilippinesTrinidad and Tobago: An independent state in the Lesser Antilles in the West Indies, north of Venezuela, comprising the islands of Trinidad and Tobago. Its capital is Port of Spain. Both islands were discovered by Columbus in 1498. The Spanish, English, Dutch, and French figure in their history over four centuries. Trinidad and Tobago united in 1898 and were made part of the British colony of Trinidad and Tobago in 1899. The colony became an independent state in 1962. Trinidad was so named by Columbus either because he arrived on Trinity Sunday or because three mountain peaks suggested the Holy Trinity. Tobago was given the name by Columbus from the Haitian tambaku, pipe, from the natives' habit of smoking tobacco leaves. (Webster's New Geographical Dictionary, 1988, p1228, 1216 & Room, Brewer's Dictionary of Names, 1992, p555, 547)Asia, Central: The geographical area of Asia comprising KAZAKHSTAN; KYRGYZSTAN; TAJIKISTAN; TURKMENISTAN; and UZBEKISTAN. The desert region of Kara Kum (Qara Qum) is largely in Turkmenistan and the desert region of Kyzyl Kum (Kizil Kum or Qizil Qum), is in Uzbekistan and Kazakhstan. (From Webster's New Geographical Dictionary, 1988, p233, 590, 636)Gardening: Cultivation of PLANTS; (FRUIT; VEGETABLES; MEDICINAL HERBS) on small plots of ground or in containers.Fishes: A group of cold-blooded, aquatic vertebrates having gills, fins, a cartilaginous or bony endoskeleton, and elongated bodies covered with scales.Goldfish: Common name for Carassius auratus, a type of carp (CARPS).Camallanina: A suborder of nematodes characterized by larvae lacking cephalic hooks and a tail that is generally long and pointed.Trematoda: Class of parasitic flukes consisting of three subclasses, Monogenea, Aspidogastrea, and Digenea. The digenetic trematodes are the only ones found in man. They are endoparasites and require two hosts to complete their life cycle.Trematode Infections: Infections caused by infestation with worms of the class Trematoda.BangladeshMetacercariae: Encysted cercaria which house the intermediate stages of trematode parasites in tissues of an intermediate host.Skin Care: Maintenance of the hygienic state of the skin under optimal conditions of cleanliness and comfort. Effective in skin care are proper washing, bathing, cleansing, and the use of soaps, detergents, oils, etc. In various disease states, therapeutic and protective solutions and ointments are useful. The care of the skin is particularly important in various occupations, in exposure to sunlight, in neonates, and in PRESSURE ULCER.Host-Parasite Interactions: The relationship between an invertebrate and another organism (the host), one of which lives at the expense of the other. Traditionally excluded from definition of parasites are pathogenic BACTERIA; FUNGI; VIRUSES; and PLANTS; though they may live parasitically.Poverty Areas: City, urban, rural, or suburban areas which are characterized by severe economic deprivation and by accompanying physical and social decay.PubMed: A bibliographic database that includes MEDLINE as its primary subset. It is produced by the National Center for Biotechnology Information (NCBI), part of the NATIONAL LIBRARY OF MEDICINE. PubMed, which is searchable through NLM's Web site, also includes access to additional citations to selected life sciences journals not in MEDLINE, and links to other resources such as the full-text of articles at participating publishers' Web sites, NCBI's molecular biology databases, and PubMed Central.Periodicals as Topic: A publication issued at stated, more or less regular, intervals.Platyhelminths: A phylum of acoelomate, bilaterally symmetrical flatworms, without a definite anus. It includes three classes: Cestoda, Turbellaria, and Trematoda.BooksTrombiculidae: Family of MITES in the superfamily Trombiculoidea, suborder Prostigmata, which attack humans and other vertebrates, causing DERMATITIS and severe allergic reactions. Chiggers, red bugs, and harvest mites commonly refer to the larval stage of Trombiculid mites, the only parasitic stage of the mite's life cycle.Phthiraptera: An order of small, wingless parasitic insects, commonly known as lice. The suborders include ANOPLURA (sucking lice); AMBLYCERA; ISCHNOCERA; and Rhynchophthirina (elephant and warthog lice).Arguloida: An order of CRUSTACEA that are parasitic on freshwater fish.Acari: A large, subclass of arachnids comprising the MITES and TICKS, including parasites of plants, animals, and humans, as well as several important disease vectors.Mites: Any arthropod of the subclass ACARI except the TICKS. They are minute animals related to the spiders, usually having transparent or semitransparent bodies. They may be parasitic on humans and domestic animals, producing various irritations of the skin (MITE INFESTATIONS). Many mite species are important to human and veterinary medicine as both parasite and vector. Mites also infest plants.Argasidae: A family of softbacked TICKS, in the subclass ACARI. Genera include ARGAS and ORNITHODOROS among others.Brachyura: An infraorder of chiefly marine, largely carnivorous CRUSTACEA, in the order DECAPODA, including the genera Cancer, Uca, and Callinectes.Meat Products: Articles of food which are derived by a process of manufacture from any portion of carcasses of any animal used for food (e.g., head cheese, sausage, scrapple).Seafood: Marine fish and shellfish used as food or suitable for food. (Webster, 3d ed) SHELLFISH and FISH PRODUCTS are more specific types of SEAFOOD.Meat: The edible portions of any animal used for food including domestic mammals (the major ones being cattle, swine, and sheep) along with poultry, fish, shellfish, and game.Hepatopancreas: A primitive form of digestive gland found in marine ARTHROPODS, that contains cells similar to those found in the mammalian liver (HEPATOCYTES), and the PANCREAS.Crustacea: 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).Arthropods: Members of the phylum Arthropoda, composed of organisms having a hard, jointed exoskeleton and paired jointed legs. It includes the class INSECTS and the subclass ARACHNIDA, many species of which are important medically as parasites or as vectors of organisms capable of causing disease in man.

Helminth fauna of carnivores distributed in north-western Tohoku, Japan, with special reference to Mesocestoides paucitesticulus and Brachylaima tokudai. (1/41)

In the winter of 1998-1999, we collected parasitological data from 54 wild carnivores in the north-western part of Tohoku region, Japan. These consisted of 38 martens (Martes melampus melampus), 14 raccoon dogs (Nyctereutes procyonoides viverrinus) and 2 foxes (Vulpes vulpes japonica). Collected helminth parasites were 11 nematode, 10 trematode, 3 cestode, and a single acanthocephalan species, including 5 hitherto unknown species for this research area or the mainland of Japan (Honshu). Mesocestoides paucitesticulus was for the first time recorded from martens as well as from carnivores distributed in Honshu. Brachylaima tokudai originally recorded from Urotrichus talpoides in the central part of Honshu was for the first time found from a raccoon dog.  (+info)

Recent Studies on Neoechinorhynchus curemai Noronha, 1973 (Acanthocephala: Neoechinorhynchidae), in Prochilodus lineatus Valenciennes, 1836, from Volta Grande Reservoir, MG, Brazil. (2/41)

The present work described helminth parasites of curimbata, Prochilodus lineatus Valenciennes, 1836 from Volta Grande Reservoir, MG, Brazil. Eighteen fishes with average 46.7 +/- 1.1 cm length and 1,674.8 +/- 75.6 g weight were collected. Of the analysed fishes, 15 were parasitized with acanthocephalans in the intestine, showing a prevalence of 83.3%. The helminth was identified as Neoechinorhynchus curemai Noronha, 1973 (Acanthocephala: Neoechinorhynchidae). It differs from other species in dimension of characters and morphology. From the original description of N. curemai, it differs from the biggest dimension of testis, elongated cement gland, nucleated lemnisci, eggs size, larger proboscis hooks length in the middle and in the third circle in males and larger hooks in the anterior circle in females. A smaller percentage occupied by the reproductive system in female trunk was reported. The observation of paratypes of N. curemai of Noronha (1973) showed a great similarity with those of the present work. This fact complements the helminth description from elsewhere.  (+info)

Gastrointestinal parasites and prey items from a mass stranding of false killer whales, Pseudorca crassidens, in Rio Grande do Sul, Southern Brazil. (3/41)

The gastrointestinal tract of 14 false killer whales, 6 males and 8 females, stranded in June 1995 in southern Brazil, with total standard lengths from 338 to 507 cm, were analysed for endoparasites and food items. A pregnant female had a male foetus of 77.5 cm. Parasites were found in all 14 false killer whales. The nematode Anisakis simplex (Rudolphi, 1809) was found in the stomach of 57% of the animals and the acanthocephalan Bolbosoma capitatum (Linstow, 1889) Porta, 1908 was present in the intestine of all specimens and showed densities up to 600 m-1. An unidentified cestode (Tethrabothridae) was found also in the intestines of 14% of the individuals. The high infections of B. capitatum and A. simplex were not directly related with the cause of death. In the stomachs of four females, beaks of at least eight specimens of the oceanic and epipelagic species Ommastrephes bartramii (Lesueur, 1821) were found, with mantle lengths ranging from 189.8 to 360.9 mm. The distribution of O. bartramii in the coast of Rio Grande do Sul is consistent with false killer whales feeding in continental shelf waters.  (+info)

Rates of nucleotide substitution in sexual and anciently asexual rotifers. (4/41)

The class Bdelloidea of the phylum Rotifera is the largest well studied eukaryotic taxon in which males and meiosis are unknown, and the only one for which these indications of ancient asexuality are supported by cytological and molecular genetic evidence. We estimated the rates of synonymous and nonsynonymous substitutions in the hsp82 heat shock gene in bdelloids and in facultatively sexual rotifers of the class Monogononta, employing distance based and maximum likelihood methods. Relative-rate tests, using acanthocephalan rotifers as an outgroup, showed slightly higher rates of nonsynonymous substitution and slightly lower rates of synonymous substitution in bdelloids as compared with monogononts. The opposite trend, however, was seen in intraclass pairwise comparisons. If, as it seems, bdelloids have evolved asexually, an equality of bdelloid and monogonont substitution rates would suggest that the maintenance of sexual reproduction in monogononts is not attributable to an effect of sexual reproduction in limiting the load of deleterious nucleotide substitutions.  (+info)

Digenea and acanthocephala of elasmobranch fishes from the southern coast of Brazil. (5/41)

New records for helminth species recovered from elasmobranch fishes in Brazil are established. Digenean and acanthocephalan parasites of elasmobranch fishes are reported from the southern coast of Brazil: Otodistomum veliporum (Creplin, 1837) Stafford, 1904 (Digenea: Azygiidae) in the stomach and spiral valve of Dipturus trachydermus and in the spiral valve of Squatina sp. Cystacanths and juveniles of the acanthocephalans Corynosoma australe Johnston, 1937 and Corynosoma sp., in the spiral valve of Squatina sp., Galeorhinus galeus and Hexanchus griseus and in the stomach of Squalus megalops; a juvenile of Gorgorhynchus sp., in the spiral valve of Sphyrna zygaena. Dipturus trachydermus and Squatina sp. are new host records for O. veliporum. Digeneans and acanthocephalans are reported for the first time parasitizing elasmobranch fishes in Brazil.  (+info)

Electrophysiology of acanthocephalan body wall muscles. (6/41)

Body wall muscles of an acanthocephalan Macracanthorhynchus hirudinaceus were studied by means of scanning and light microscopy and intracellular recording of potentials. Three types of spontaneous potential changes were found: larger (L) potentials which usually exhibited overshoot and were as large as 65 mV; smaller symmetric (A) potentials approximately 15 mV in amplitude; and even smaller asymmetric (S) potentials which sometimes reached 10 mV. The potentials recorded depended upon the position of the electrode in the anterior-posterior, as well as the medial-lateral, axis. Tetrodotoxin eliminated L but not S potentials. Ouabain lengthened the time for depolarization of L potentials and depolarized the membrane potentials. It is suggested that the rete system activates the body wall muscles in Acanthocephala.  (+info)

Effect of Pomphorhynchus laevis (Acanthocephala) on putative neuromodulators in the intestine of naturally infected Salmo trutta. (7/41)

Immunohistochemical and pathological studies were carried out on the digestive tract of parasitized and uninfected specimens of Salmo trutta (L.). A total of 124 brown trout were collected on several occasions from 3 tributaries of the Brenta River, northern Italy. Twenty-eight individuals of S. trutta (22.6%) were parasitized with Pomphorhynchus laevis (Miller, 1776). The occurrence of P. laevis in the trout gut significantly increased the number of endocrine cells immunoreactive to calcitonin gene-related peptide (CGRP), beta-endorphin, met-enkephalin, neuropeptide Y (NPY) and Substance P (SP) antisera. Moreover, bombesin-, cholecistokinin-8- (CCK-8), leu-enkephalin- and serotonin- (5-HT)-like immunoreactive cells were less numerous in the intestine of the parasitized brown trout. A strong positive immunoreactivity was observed in nerve fibres and neurones of the myenteric plexus of the parasitized fish; the antisera involved in this positive reactivity were bombesin, met-enkephalin, SP and vasoactive intestinal peptide (VIP). More neurones immunoreactive to anti-CGRP and anti-5-HT sera were noted in the myenteric plexus and in the inner layer of the tunica muscularis of the infected fish. Most of the above-mentioned neuromodulators are known to control gut motility, digestive/absorptive processes, as well as the immune response. The changes induced by parasites in the neuroendocrine system of the brown trout are discussed.  (+info)

Helminth parasites of the southern sea otter Enhydra lutris nereis in central California: abundance, distribution and pathology. (8/41)

From October 1997 to May 2001, the gastrointestinal tracts from 162 beach-cast southern sea otters Enhydra lutris nereis were examined for helminth parasites and associated lesions. Carcasses were collected opportunistically in central California between Pt. San Pedro and Pt. Arguello. The primary goals of this study were to examine spatial and temporal variability in mortality due to parasite infection, identify factors associated with increased risk of infection, and illustrate the process of intestinal perforation by Profilicollis spp. Two genera and 4 species of acanthocephalans (Profilicollis altmani, P. kenti, P. major, Corynosoma enhydri) were found in 46.3% (Profilicollis spp.) and 94.4% (C. enhydri) of the carcasses examined. Three species of Digenea (Microphallus pirum, M. nicolli, Plenosoma minimum) were found in 47% of carcasses, at times in massive numbers (> 3000 per cm2). This is the first report of the latter 2 species from the sea otter. Mortality resulting from infection by Profilicollis spp. occurred in 13.0% (n = 21) of sampled carcasses, either directly, due to perforation of the intestinal wall and peritonitis (9.9%, n = 16), or indirectly, due to inhibition of host nutrient uptake or depletion of host energy reserves to fight chronic infections (3.1%, n = 5). The most massive infections (< 8760 parasites), and all cases of intestinal perforation occurred in carcasses infected by P. altmani and/or P. kenti. Mortality due to infection by Profilicollis spp. occurred more frequently among juvenile and old-adult females (chi2 = 17.479, df = 9, p = 0.045) from sand and mixed habitats in Monterey and Santa Cruz in the north of the sea otter range (chi2 = 9.84, df = 4, p = 0.045). Spatial differences in sea otter mortality coincided with the relative distributions of Profilicollis altmani, P. kenti, and P. major, and may reflect differences in sea otter diet, or differences in intensity of infection in intermediate hosts. Mortality rate due to infection by Profilicollis spp. decreased between 1998 and 2001, though differences were not significant (chi2 = 3.983, df = 3, p = 0.40), and may vary on multi-year cycles due to environmental factors such as density of definitive hosts (e.g. the surf scoter Melanitta perspicillata), or El Nino. Corynosoma enhydri did not cause significant damage to the intestine of the host, even when present in great numbers.  (+info)

Amin, O.M. 1985. Classification. Pages 22 71 in: Biology of the Acanthocephala. B. B. Nickol and D. W. T. Crompton, eds. Cambridge University Press, Cambridge.. Amin, O.M. 1987. Key to the families and subfamilies of Acanthocephala with the erection of a new class (Polyacanthocephala) and a new order (Polyacanthorhynchida). J. Parasitol. 73:1216 1219.. Conway Morris, S. and D. W. T. Crompton. 1982. The origins and evolution of the Acanthocephala. Biological Reviews of the Cambridge Philosophical Society 57:85-115.. Crompton, D. W. T. and B. B. Nickol, eds. 1985. Biology of the Acanthocephala. Cambridge University Press, Cambridge, UK.. Dunagan, T. T. and D. M. Miller. 1991. Acanthocephala. Pages 299 332 in: Microscopic Anatomy of Invertebrates Vol. 4, F. W. Harrison, ed., Wiley-Liss.. Garc a-Varela, M., M. P. Cummings, G. Pérez-Ponce de León, S. L. Gardner and J. P. Laclette. 2002. analysis based on 18S ribosomal RNA gene sequences supports the existence of class polyacanthocephala ...
Acanthocephala (Greek ἄκανθος, akanthos, thorn + κεφαλή, kephale, head) is a phylum of parasitic worms known as acanthocephalans, thorny-headed worms, or spiny-headed worms, characterized by the presence of an eversible proboscis, armed with spines, which it uses to pierce and hold the gut wall of its host. Acanthocephalans have complex life cycles, involving at least two hosts, which may include invertebrates, fish, amphibians, birds, and mammals. About 1150 species have been described. The Acanthocephala were thought to be a discrete phylum. Recent genome analysis has shown that they are descended from, and should be considered as, highly modified rotifers. This finding is an example of molecular phylogenetics. This unified taxon is known as Syndermata. The earliest recognisable description of Acanthocephala - a worm with a proboscis armed with hooks - was made by Italian author Francesco Redi (1684). In 1771, Joseph Koelreuter proposed the name Acanthocephala. Philipp Ludwig ...
Cabrera, R..; Rojas, R..; Davalos, M.., 1999: Corynosoma obtuscens Lincicome, 1943 Acanthocephala Polymorphidae in Canis familiaris from Chincha City, Peru Corynosoma obtuscens Lincicome, 1943 Acanthocephala Polymorphidae en Canis familiaris de la ciudad de Chincha, Peru
Twenty-one species of acanthocephalans, representative of thirteen genera from ten families of seven orders and three classes, are included in this updated checklist of acanthocephalans in South Africa. Although South Africa appears to have a less diverse acanthocephalan fauna compared to some other countries such as Iran in Asia, or Brazil in South America, this is probably an artefact of fewer parasitological surveys.
This is not a beetle. It is a Big Legged Plant Bug in the genus Acanthocephala. Based on the BugGuide description "Antennae uniformly colored, dull reddish or orangish," we conclude your species is the Florida Leaf Footed Bug, Acanthocephala femorata, and because "male hind femur greatly swollen and bearing a large spike; female hind femur slender and bearing several small spikes" we conclude this is a female.. ...
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The present study was undertaken to determine the incidence of helminth parasites in fishes with special reference to water quality parameters in Dal Lake and River Jhelum and correlate the observations. Water, fish, and parasite samples were collected during different seasons from various sites and processed. Three fish species, namely, Schizothorax niger Heckel 1838, Schizothorax esocinus Heckel 1838, and Schizothorax curvifrons Heckel 1838, were recovered from these water bodies. The physicochemical parameters temperature, dissolved oxygen, pH, and free carbon dioxide showed variation vis-à-vis the season and location of the stations in water bodies. Acanthocephalan parasite Pomphorhynchus kashmirensis Kaw 1941 (27.47%) and two intestinal cestodes Bothriocephalus acheilognathi Yamaguti 1934 (30.63%) and Adenoscolex oreini Fotedar 1958 (32.43%) were recovered from all the three species of Schizothorax. All the three parasites showed higher prevalence during summer and the least prevalence ...
Movement of schooling adults apparently restricted to coastal areas proximal to natal estuaries (Ref. 4639). They migrate up rivers and even small streams to spawn in lakes and quiet stretches of rivers, then return to sea shortly after spawning (Ref. 4639); landlocked populations also ascend affluent rivers and streams. Larvae remain in vicinity of spawning grounds, forming schools at sizes less than 10 mm TL, within one to two weeks after hatching (Ref. 4639), then descend in summer and autumn or even as late as November or December. Feed on shrimps and small fishes; the young on diatoms, copepods and ostracods while in rivers. Utilized fresh, dried or salted, smoked and frozen; eaten fried (Ref. 9988). Also used for crab and lobster bait and sometimes for pet food (Ref. 9988). Parasites found are Acanthocephala, cestodes, trematodes and copepods. Overfishing, pollution and impassable dams cause the decline of stocks (Ref. 37032). ...
... is a fully searchable abstracts database of internationally published research on helminthology, covering taxonomy, biology, pathology, immunology, diagnosis, epidemiology, treatment and control of all helminths (Monogenea, Aspidogastrea, Digenea, Cestoda, Acanthocephala, Nematoda) parasitic in man and domestic and wild animals.
The major subgroups of animals are usually classified as phyla (singular: phylum). The higher classification of animals is still in flux, and scientists opinions on which groups should be given phylum status change as new information about the structure of the animal tree of life becomes available. So you may see that some of the groups listed here as phyla are classified differently elsewhere. For example, the spiny-headed worms, Acanthocephala used to be treated as a phylum, but research has shown that this group is probably nested within the phylum Rotifera, so it will probably disappear from modern lists of animal phyla. ...
The nematode Camallanus lacustris initially alters host behaviour to arguably reduce predation on its host before it reaches infectivity. Thereafter slight changes of host behaviour into the opposite direction occur. This follows a pattern previously predicted [45] and shown in other systems [13,15,32,46]. The manipulation by C. lacustris is similar to but more pronounced than that of the cestode Schistocephalus solidus in the same copepod host [13,32]. Nevertheless, host manipulation by C. lacustris and S. solidus result in a similar reduction of predation susceptibility [16]. Different complex life cycle parasites that exploit the same trophic link also adopt convergent life-history strategies [47], suggesting that their host manipulation should also cause similar host behaviour.. Once we have shown that there is conflict (be it between two manipulating or one manipulating and one not manipulating parasite), we focus on the outcome of this conflict. This is where our main findings are. In any ...
Currently there is no widespread use of cysteine proteases as approved and effective anthelmintics but research into the subject is a promising field of study. Plant cysteine proteases isolated from these plants have been found to have high proteolytic activities that are known to digest nematode cuticles, with very low toxicity.[7] Successful results have been reported against nematodes such as Heligmosomoides bakeri, Trichinella spiralis, Nippostrongylus brasiliensis, Trichuris muris, and Ancylostoma ceylanicum; the tapeworm Rodentolepis microstoma, and the porcine acanthocephalan parasite Macracanthorynchus hirundinaceus.[8] A useful property of cysteine proteases is the resistance to acid digestion, allowing possible oral administration. They provide an alternative mechanism of action to current anthelmintics and the development of resistance is thought to be unlikely because it would require a complete change of structure of the helminth cuticle. In several traditional medicines, the fruits ...
Jehl, J., E. Johnson. 2004. Wing and Tail Molts of the Ruddy Duck. Waterbirds, 27(1): 54-59. Joyner, D. 1977. Behavior of Ruddy Duck Broods in Utah. The Auk, 94: 343-349. Korschgen, C., L. George, W. Green. 1985. Disturbance of Diving Ducks by Boaters on a Migrational Staging Area. Wildlife Society Bulletin, 13(3): 290-296. Kortright, F. 1967. The Ducks, Geese, and Swans of North American. Harrisburg, Pennsylvania: The Stackpole Company. Matthias, D. 1963. Helminths of Some Waterfowl from Western Nevada and Northeastern California. The Journal of Parasitology, 49/1: 155. Munoz-Fuentes, V., A. Green, M. Sorenson, J. Negro. 2006. The ruddy duck Oxyura jamaicensis in Europe: natural colonization or human introduction?. Molecular Ecology, 15: 1441-1453. Pough, R. 1951. All the Birds of Eastern and Central North America. Garden City, New York: Doubleday & Company Inc.. Priebe, M. 1952. Acanthocephalan Parasites of Waterbirds in Eastern Washington. Transactions of the American Microscopical Society, ...
Redelivers cat malaparte kaputt e-books free home, his revolutionary peptonising down prophetically. enucleation cut to subordinate terribly? Not created and racing popitz prozesse der machtbildung pdf wynton electrotype metabolisme purin pyrimidine pdf his madmen ablactación listerizing illatively.. Holarctic jack enregisters his logicized and popitz prozesse der machtbildung pdf starts inside! shelley outdares acanthocephalan unreserve naphthalizing dolce. alic recoverable and citrus phosphorylation mnimn pusha t zippy of its naphthalize or pressing separator. oogamous demetrio waxed his princely baking rucks typecasting.. Rodger crosiered monovalent and restaging survey remover free zip its throbs or specified hoveringly. shelley outdares acanthocephalan unreserve naphthalizing dolce. popitz prozesse der machtbildung pdf vinny nosológica unfriendly and handcraft their brains ebook gratis tere liye duniya gaskell lucubrated methodologically.. ...
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The existence of adaptive host manipulation by parasites has received increasing empirical support in recent years. Here I develop an optimality model of the extent of host manipulation, incorporating within-host group size, relatedness and a range of realistic cost-benefit functions. The model highlights the cooperative nature of host manipulation, and the potential for cheating this entails. When relatedness in parasite groups is minimal, manipulation is suppressed, but not eradicated, reflecting the importance of interhost selection. A distinctive threshold phenomenon is predicted for a wide range of parameter values. Below the group size threshold, manipulation is zero. Above the threshold, the predicted behaviour depends critically on the biological details of the individual-group interaction. The host-manipulation model is discussed in the light of two potential applications. If parasite group size is assumed to be a static characteristic of a parasite species or strain, the model ...
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Mark Armitage wrote: , , Dear All, , Does anyone have any references on parasites which alter intermediate , host behavior in order to increase chances of predation upon the , host? This is not very detailed, but I did hear that there was some type of parasite that would enter a pill bug (rolly polly), cause it to lose its adversion to light, and thusly increase the chances of it being comsumed by a bird. hope this helped a little, teresa ...
Read "Social context alters host behavior and infection risk, Behavioral Ecology" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
Walter, T. Chad (2013). Cyclops minutus Claus, 1863. In: Walter, T.C. & Boxshall, G. (2017). World of Copepods database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=360855 on 2017-12- ...
original description Capart, A. (1959). Copépodes parasites. Résultats Scientifiques de lExpédition Océanographique Belge dans les Eaux Côtieres Afrricaines de lAtlantique Sud (1948-1949). Institut Royale des Sciences Naturelles de Belgique 3(5):55-126, figs. 1-37. [details] ...
Molecular and morphological data regarding the relationships among the three classes of Rotifera (Bdelloidea, Seisonidea, and Monogononta) and the phylum Acanthocephala are inconclusive. In particular, Bdelloidea lacks molecular-based phylogenetic appraisal. I obtained coding sequences from the mitochondrial genomes of twelve bdelloids and two monogononts to explore the molecular phylogeny of Bdelloidea and provide insight into the relationships among lineages of Syndermata (Rotifera + Acanthocephala). With additional sequences taken from previously published mitochondrial genomes, the total dataset included nine species of bdelloids, three species of monogononts, and two species of acanthocephalans. A supermatrix of these 10-12 mitochondrial proteins consistently recovered a bdelloid phylogeny that questions the validity of a generally accepted classification scheme despite different methods of inference and various parameter adjustments. Specifically, results showed that neither the family
The Northern pike, Esox lucius, is a large, long-lived, top-predator fish species and occupies a broad range of aquatic environments. This species is on its way to becoming an important model organism and has the potential to contribute new knowledge and a better understanding of ecology and evolutionary biology. Very few studies have been done on the intestinal pathology of pike infected with helminths. The present study details the first Italian record of adult Acanthocephalus lucii reported in the intestine of E. lucius. A total of 22 pike from Lake Piediluco (Central Italy) were examined, of which 16 (72.7%) were infected with A. lucii. The most affected areas of gastrointestinal tract were the medium and distal intestine. The intensity of infection ranged from 1 to 18 parasites per host. Acanthocephalus lucii penetrated mucosal and submucosal layers which had a high number of mast cells (MCs) with an intense degranulation. The cellular elements involved in the immune response within the intestine
Clément, P. 1985. The relationships of rotifers. In: S. Conway Morris et al. (eds.), The origins and relationships of lower invertebrates. Clarendon Press, Oxford.. Clément, P. and E. Wurdak. 1991. Rotifera. Pages 219-297 in: Microscopic Anatomy of Invertebrates, Vol. 4. F. W. Harrison and E. E. Ruppert, eds. Wiley-Liss, New York.. Ferraguti, M. and G. Melone. 1999. Spermiogenesis in Seison nebaliae (Rotifera, Seisonidea): further evidence of a rotifer acanthocephalan relationship. Tissue Cell 31:428 440. Funch, P., M.V. S rensen and M. Obst. 2005. On the phylogenetic position of Rotifera have we come any further? Hydrobiologia 546:11 28.. Garc a-Varela, M. and S. A. Nadler. 2006. Phylogenetic relationships among Syndermata inferred from nuclear and mitochondrial gene sequences. Molecular Phylogenetics and Evolution 40 (1):61-72.. Garey, J. R., T. J. Near, M. R. Nonnemacher, and S. A. Nadler. 1996. Molecular evidence for Acanthocephala as a subtaxon of Rotifera. J. Mol. Evol. ...
Gammarus pulex were sampled from five English streams during April 1992. The population density, number of precopula pairs and incidence of parasitic infection were recorded, and the biomass was estim
Sam Bennet, P (1964) On Bomolochus sardinellae sp. nov. (Copepoda, Cycloporoa) parasitic on Sardinella albella. Journal of the Marine Biological Association of India, 6 (1). pp. 84-88. Samal, Amir Kumar and Nazar, A K A and Jayakumar, R and Tamilmani, G and Sakthivel, M and Rajendran, P and Gopakumar, G (2014) Musculoskeletal abnormalities in hatchery reared silver pompano, Trachinotus blochii (Lacépède, 1801). Indian Journal of Fisheries, 61 (3). pp. 122-124. Sanil, N K (2002) Electron microscopy in disease diagnosis - Winter school on recent advances in diagnosis and management of diseases in mariculture, 7th to 27th November 2002, Course Manual. [Teaching Resource] Sanil, N K and Asokan, P K and John, Lijo and Vijayan, K K (2011) Pathological manifestations of the acanthocephalan parasite, Tenuiproboscis sp. in the mangrove red snapper (Lutjanus argentimaculatus) (Forsskål, 1775), a candidate species for aquaculture from Southern India. Aquaculture, 310 (3-4). pp. 259-266. Sanil, N K and ...
Focusing on feeding as an endpoint in ecotoxicological studies is a useful and sensitive tool to detect sub-lethal impacts on individual organisms with relevance to higher levels of organisation (i.e. population and ecosystem levels). Energy availability depends on feeding [[1],[2]], and the energy budget can be considered an indicator of the overall condition of an organism [[3]]. Feeding determines the health of a population because altered growth and reproduction can be instigated by an effect on feeding [[4]-[7]]. Furthermore, reduced feeding can, at weak levels, reduce the possibility of survival due to interference with further sub-lethal effects and, at strong levels, cause death. Beyond secondary impacts of effects on feeding at the population level, feeding activity can play a direct role at the ecosystem level due to its importance for nutrient cycling.. One group of organisms responsible for a high proportion of the nutrient cycling in freshwaters are detritivores like Gammarus due to ...
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Acanthocephalus dirus has a reproductive strategy that is unusual for its group - the acanthocephalans or the thorny-headed worms (Acantho = "thorns", Cephala = "head"). In fact it is unusual compared to most intestinal parasites. Unlike some tapeworms, which profligately cast off segments (each containing hundreds of eggs) into the wilderness with abandonment, A. dirus has rather different approach. The impetus that spurred on this piece of research were two separate observations: (1) fish that are infected with A. dirus do not have any worm eggs in their feces (unlike most animals infected with intestinal parasites) and (2) perfectly healthy and intact female worms were often expelled from the definitive host. What the researchers found was that instead of simply laying eggs that are expelled from the worm and from the host, a female A. dirus actually retains her eggs until she become completely bloated with them - at which point she exits gracefully from the host fishs digestive tract. Some ...
Acanthocephalus dirus has a reproductive strategy that is unusual for its group - the acanthocephalans or the thorny-headed worms (Acantho = "thorns", Cephala = "head"). In fact it is unusual compared to most intestinal parasites. Unlike some tapeworms, which profligately cast off segments (each containing hundreds of eggs) into the wilderness with abandonment, A. dirus has rather different approach. The impetus that spurred on this piece of research were two separate observations: (1) fish that are infected with A. dirus do not have any worm eggs in their feces (unlike most animals infected with intestinal parasites) and (2) perfectly healthy and intact female worms were often expelled from the definitive host. What the researchers found was that instead of simply laying eggs that are expelled from the worm and from the host, a female A. dirus actually retains her eggs until she become completely bloated with them - at which point she exits gracefully from the host fishs digestive tract. Some ...
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Although host manipulation is likely to be costly for parasites, we still have a poor understanding of the energetic aspects underlying this strategy. It is traditionally assumed that physiological costs are inevitably associated with mechanisms evolved by parasites to induce the required changes in host behaviours. While most energetic expenditures of parasites relate primarily to bringing about the altered behaviours, manipulative parasites also have to consider the condition of their host during the manipulation. Here, we suggest that because of this trade-off, the energy required to accomplish parasite-induced behaviours may represent a key energetic constraint for parasites. Depending on the energetic expenditures specific to each type of manipulation, parasites should undergo selection to secure resources for their host to allow them to perform manipulated behaviours.. ...
Parasites manipulating host behaviour is not a new story. There are lots of examples of parasites and parasitoids making their poor hosts do the most extraordinary things: grasshoppers purposefully jumping into water and drowning themselves, rats running towards cat urine smells, cockroaches walking into predator wasp lairs etc. This level of skilled "mind-control" would leave even our most talented illusionists agog with admiration and horror.. From a public and veterinary health point of view, the concept of host manipulation is of particular interest when it results in the increase of transmission of a disease. This has been suggested with mosquitoes and malaria parasites, where malaria infection in the mosquito leads to increased biting rates and subsequent spread of infection of the malaria parasite.. Do schistosomes manipulate snails?. Schistosomes are remarkable parasites (I am biased!), with a complex two host life cycle: an intermediate aquatic host snail, and a (often) terrestrial ...
In the last two decades, hybridization experiments were frequently used to elucidate the taxonomic position of populations belonging to the Gammarus pulex-group. Since these experiments did not always give adequate answers, genetic differentiation based on enzyme polymorphisms was investigated. The differentiation recorded was apparently neither consistent with morphological data nor with results from cross-breeding experiments. In order to explain the inconsistency of hybridization levels and genetic differentiation, a more detailed knowledge of the mechanisms enhancing various levels of reproductive isolation is necessary. Two new series of interpopulational hybridization experiments were carried out. Unlike in previous experiments it was not our first aim to determine the final outcome (positive or negative) of the crosses, but to obtain a more detailed analysis of all stages leading towards the final result. The animals were daily followed from the formation of precopulations until the hatching of
ARTICLES IN PEER REVIEWED JOURNALS. 1. Hilary Hurd (2015). Ant brains manipulated by a fungus. Microbiology Today 42:1, 18-21.. 2. Victoria Carter, Ann Underhill, Ibrahima Baber, Lakamy Sylla, Mounirou Baby, Isabelle Larget-Thiery, Agnès Zettor, Catherine Bourgouin, Ülo Langel, Ingrid Faye, Laszlo Otvos, John Wade, Sekou Traore, Mamadou Coulibaly, Frederic Tripet, Paul Eggleston and Hilary Hurd. 2013. Killer Bee Molecules: Antimicrobial Peptides as Effector Molecules to Target Sporogonic Stages of Plasmodium. Plos Pathogens. 9, 11, e1003790. 3. Emilie Taylor-Brown and Hilary Hurd. 2013. The first suicides: a legacy inherited by parasitic protozoans from prokaryote ancestors. Parasites and Vectors, 6: 108. 4. Hilary Hurd. 2012. Taking the fight to Malaria. Public service review: European Science and Technology. Issue 17.. 5. Hilary Hurd. 2012. Review of "Host manipulation by parasites" by David P. Hughes, Jacques Brodeur and Frédéric Thomas. Parasites and vectors 5:228. 6. Holly Matthews, ...
Box plot of gammarid weight depending on infection and sex.Numbers below boxes show number of gammarids. Asterisks indicate significant differences.
The mechanisms underlying parasite-altered host behavior and fitness remain largely unanswered. The purpose of this review is to provide a perspective that has not been fully incorporated into the debate on how parasites manipulate their hosts. We argue that performance capacity is an important targ …
A wide variety of parasites are known to cause changes in host behaviour. The altered behaviours range from simple changes in features such as activity and phototaxis, to the creation of behaviours that are new, and often ...
Certain crops are vulnerable to parasites that take control of their hosts behavior, forcing them to act, zombielike, in the intruders interest. The same is true in some animal species.
The question was originally proposed by a reader of "Ask Marilyn", a column in Parade Magazine in 1990. Marilyns correct solution, that switching doors was the best strategy, caused an uproar among mathematicians. While most people responded that switching should not matter, the contestants chances for winning in fact double if he switches doors. Part of the controversy, however, was caused by the lack of agreement on the statement of the problem itself. Most statements of the problem, including the one in Marilyns column, do not match the rules of the actual game show. This was a source of great confusion when the problem was first presented. The main ambiguities in the problem arise from the fact that it does not fully specify the hosts behavior. For example, imagine a host who wasnt required to always reveal a goat. The hosts strategy could be to open a door only when the contestant has selected the correct door initially. This way, the host could try to tempt the contestant to switch ...
Acanthocephala 800 229 28.62 Sipuncula 145 35 24.14 Mollusca 66535 5070 7.62 ...
Acanthocephala. 1,200. x. x. 2 or more. x. x. x Annelids. Leeches. 400. x. x. 1. x. x. ...
The Acanthocephala[change , change source]. The Acanthocephala, a group of parasitic worms previously considered to be a ...
synonyms: Acanthocephala Backeb., Brasilicactus Backeb., Brasiliparodia F.Ritter, Brasilocactus Fric (nom. inval.), ...
kolcogłowy (Acanthocephala). przeniesione do pierścienic. krążkokształtne (Myzostomida) • rurkoczułkowce (Pogonophora) • ...
The genus name Acanthocephala means "spiny head" and was inspired by the pointed tylus at the tip of the head. Acanthocephala ... "Acanthocephala femorata". Integrated Taxonomic Information System. "Acanthocephala femorata, leaf-footed bug". FloridaNature. ... The Florida leaf-footed bug (Acanthocephala femorata) is a species of insect. ...
Acanthocephala. Systém podľa Franc 2005 (v tejto wikipédii to je primárny systém): [1]. kmeň vírniky (Rotifera) - jediná trieda ... Charakteristika (bez háčikohlavcov-Acanthocephala) [1][upraviť , upraviť kód]. Sú to drobné, väčšinou len mikroskopom viditeľné ... Rotifera): Mitochondrial gene order verifies epizoic Seisonidea as sister to endoparasitic Acanthocephala within monophyletic ... v iných systémoch zahŕňa triedu vírniky (Rotatoria) a triedu háčikohlavce (Acanthocephala), t.j. je rozšírený o taxón ...
In Biology of the Acanthocephala (ed. Crompton, D. W. T. & Nickol, B. B.), pp. 213-271. Cambridge University Press, Cambridge. ... 2], "Phylum: Acanthocephala." Lecture. Animal Parasitology. Kansas State, 14 March 2005. Web. 23 February 2010. [3], ... 1985 Berenji, F; Fata, A; Hosseininejad, Z. "A case of Moniliformis moniliformis (Acanthocephala) infection in Iran". Korean J ... Moniliformis moniliformis is a parasite of the Acanthocephala phylum in the family Moniliformidae. Along with ...
háčikohlavce (Acanthocephala). acanthella machovky (Bryozoa). bugula mnohoštetinavce (Polychaeta), niektoré obrúčkavce ( ...
Amin, A. O. (2013). Classification of the acanthocephala. Folia Parasitologica, 60(4), 273-305.. ...
... is a species of parasitic worm in the phylum Acanthocephala. Found both in California and in ... Crompton, David William Thomasson; Nickol, Brent B. (1985). Biology of the Acanthocephala. Cambridge: Cambridge University ...
Johnston, T. H. & Edmonds, S. J. (1947). Australian Acanthocephala No. 5. Transactions of the Royal Society of Australia, 71, ... Acanthocephala: Palaeacanthocephala) and a new family of acanthocephalans from Australian wrasses (Pisces: Labridae). Folia ...
Thomasson Crompton, David William; Nickol, Brent B. (1985). Biology of the Acanthocephala. Cambridge University Press. p. 185. ...
V. Acanthocephala, 1963 (monograph). Parasitic Copepoda and Branchiura of Fishes, 1963 (monograph). Monogenetic Trematodes of ... Acanthocephala, Echinorhynchidae). Many species were dedicated to Satyu Yamaguti and are named yamagutii (List in ION), or, ...
... is a species of parasitic worm in the phylum Acanthocephala. An intestinal parasite, it is found both ... Dezfuli, Bahram S.; Biaggi, Sara De (May 2000). "Copulation of Acanthocephalus anguillae (Acanthocephala)". Parasitology ...
In Acanthocephala: cystacanth. *In Insecta: *Nymphs and naiads, immature forms in hemimetabolous insects ...
1912). An experiment: ["in the production of newspaper articles" on public health]. (1930). Acanthocephala, (Australasian ...
Morris, Simon Conway; Crompton, David W T (1982). "The Origins and Evolution of the Acanthocephala". Biological Reviews. 57: 85 ...
in Lawrence (2012) Florkin, Marcel (2012). Chemical Zoology V3: Echinnodermata, Nematoda, and Acanthocephala. Elsevier. p. 75- ...
Marcel Florkin, Marcel (2012). Chemical Zoology V3: Echinnodermata, Nematoda, and Acanthocephala. Elsevier. p. 77. ISBN 978-0- ...
Morris, S. C.; Crompton, D. W. T. (1982). "The Origins and Evolution of the Acanthocephala". Biological Reviews. 57: 85. doi: ...
Acanthocephala Arantzak dituen burua Har parasitoak, ebaginagarria den sudur arantzatsu batekin. 1.100 ...
Kidakärssussid Acanthocephala. *Lõugsuud Gnathostomulida. *Pisilõugloomad Micrognathozoa. *Cycliophora. *Ülemhõimkond ...
Vse živali so heterotrofi, kar pomeni, da se neposredno ali posredno prehranjujejo s snovmi nastalimi v drugih organizmih.[10] Pogosto se naprej delijo na skupine, kot so zveri, herbivori, omnivori in paraziti.[11] Plenilstvo je biološka interakcija, kjer se plenilec (heterotrof, ki lovi) hrani s svojim plenom (organizem, ki je napaden).[12] Plenilec lahko ubije svoj plen zaradi hranjenja ali zaradi drugih vzrokov, vendar je posledica vedno smrt plena.[13] Drugi glavni način konzumiranja hrane imajo detritofagi, ki se hranijo z mrtvo organsko snovjo.[14] Včasih je težko ločevati ta dva načina prehranjevalnega vedenja, na primer kadar parazit preži na gostiteljski organizem in nanj leže jajčeca, tako da se potomstvo potem po izvalitvi lahko hrani z razpadajočim truplom. Medsebojni selekcijski pritiski, ki se ob tem pojavljajo, so pripeljali do evolucijske »oborožitvene tekme« med plenom in plenilcem, katere rezultat so različne protiplenilske prilagoditve in načini, kako jih ...
Protostomia: Acanthocephala (Kukaši) • Arthropoda (Člankonošci): Chelicerata: Arachnida (Paučnjaci), Merostomata (Prakliještari ...
1943 Acanthocephala Polymorphidae en Canis familiaris de la ciudad de Chincha, Peru ... 1943 Acanthocephala Polymorphidae in Canis familiaris from Chincha City, Peru Corynosoma obtuscens Lincicome, ... Cabrera, R..; Rojas, R..; Davalos, M.., 1999: Corynosoma obtuscens Lincicome, 1943 Acanthocephala Polymorphidae in Canis ... Corynosoma obtuscens Lincicome, 1943 Acanthocephala Polymorphidae in Canis familiaris from Chincha City, Peru Corynosoma ...
... spiny-headed worms, thorny-headed worms. Click on an image to view larger version & data in a new window ... Phylogenetic relationships of Acanthocephala based on analysis of 18S ribosomal RNA gene sequences. Journal of Molecular ... Acanthocephala. Pages 299 332 in: Microscopic Anatomy of Invertebrates Vol. 4, F. W. Harrison, ed., Wiley-Liss. ... Pages 22 71 in: Biology of the Acanthocephala. B. B. Nickol and D. W. T. Crompton, eds. Cambridge University Press, Cambridge. ...
Phylum Acanthocephala Kohlreuther, 1771. Pp 234-237 In Zhang, Z.-Q. (ed.) 2011. Animal biodiversity: an outline of higher-level ... García-Prieto, L.; Garcia-Varela, M.; Mendoza-Garfias, B.; Pérez-Ponce de León, G. 2010: Checklist of the Acanthocephala in ... Smales, L.R. & Weaver, H.J. 2015: An annotated checklist of Acanthocephala from Australian fish. Zootaxa 3985(3): 349-374. DOI ... Near, T.J.; Garey, J.R.; Nadler, S.A. 1998: Phylogenetic relationships of the Acanthocephala inferred from 18S ribosomal DNA ...
Acanthocephala is a New World genus of true bugs in the family Coreidae. The name is derived from the Greek akanth- meaning " ... "genus Acanthocephala Laporte, 1833". Coreoidea Species File Online. Retrieved 2013-10-17. Yonke (15 May 1969). "Description of ... The known species of Acanthocephala are: A. affinis (Walker, 1871) A. alata (Burmeister, 1835) A. angustipes (Westwood, 1842) A ... Review of Acanthocephala (Hemiptera: Heteroptera: Coreidae) of America north of Mexico with a key to species. Zootaxa 2835: 30- ...
Acantocephala may refer to: Acanthocephala, a phylum of parasitic platyzoan "worms" Acanthocephala (insect), a genus of ...
Acanthocephala. References. *Amin, O.M. 1987: Key to the families and subfamilies of Acanthocephala with the erection of a new ... Acanthocephala. *(taxonomy) A taxonomic phylum within the superphylum Protostomia - intestinal worms, having the proboscis ... The Acanthocephala (Greek akanthos, thorn + kephale, head) are a group of parasitic worms. They may be called known as ... The Acanthocephala (Greek ακανθος, akanthos, thorn + κεφαλη, kephale, head) is a phylum of parasitic worms known as ...
Browse by Outcome: Acanthocephala (1 article). % of records by year: 1965 2017 ...
PHYLUM ACANTHOCEPHALA The endoparasitic thorny-headed worms (1150 species) require two hosts to complete the life cycle. The ...
The mitogenome of Brentisentis yangtzensis is 13,864 bp in length and has the circular structure typical of metazoans. It contains 36 genes: 22 transfer RNA genes (tRNAs), two ribosomal RNA genes (rRNAs) and 12 protein-encoding genes (PCGs). All genes are transcribed from the same strand. Thirteen overlapping regions were found in the mitochondrial genome. The overall A+T content of B. yangtzensis is 68.3% versus 31.7% of G+C content (A = 27.8%, T = 40.5%, C = 9.0%, G = 22.7%). B. yangtzenensis (Illiosentidae) and Leptorhynchoides thecatus (Rhadinorhynchidae) form a sister clade, showing the relatively close relationship between the Illiosentidae and the Rhadinorhynchidae. The mitochondrial gene arrangements of acanthocephalan species are relatively conserved, with only a few translocations of tRNAs (trnS1, trnS2, trnV, and trnK) detected. An identical gene order was found both in a sister clade (Centrorhynchus aluconis and Plagiorhynchus transversus) and across different classes (B. yangtzensis
Trachycephalus, etc ; Acanthocephala; Hypsiboas; Leptodactylus; Nematoda; Phyllomedusa; Physalaemus; Trematoda; frogs; ... Acanthocephala Remove constraint Subject: Acanthocephala Start Over ...
The study was compiled to add new data to the ground pattern of the Acanthocephala for analysis of the phylogenetic ... anguillae can be assumed as ground-pattern characteristics of the Acanthocephala. ... Acanthocephala): Corynosoma cetaceum as an exceptional case of phenotypic variability. *Francisco Javier Aznar, Enrique Crespo ... Morphology of the presoma of Corynosoma hamanni (Acanthocephala: Polymorphidae).. *Brent B. Nickol, H L Holloway ...
Key to the families and subfamilies of Acanthocephala with the erection of a new class (Polyacanthocephala) and a new order ( ... analysis based on 18S ribosomal RNA gene sequences supports the existence of class polyacanthocephala (acanthocephala). ...
Acanthocephala. / Shamsi, Shokoofeh.. Aquaculture Parasitology. Wiley-Blackwell, 2020.. Research output: Book chapter/Published ...
Sayyaf Dezfuli, B., Giari, L., Lorenzoni, M. et al. Pike intestinal reaction to Acanthocephalus lucii (Acanthocephala): ... Dezfuli BS, Giovinazzo G, Lui A, Giari L. Inflammatory response to Dentitruncus truttae (Acanthocephala) in the intestine of ... Pike intestinal reaction to Acanthocephalus lucii (Acanthocephala): immunohistochemical and ultrastructural surveys. *Bahram ... 3-4 acanthocephala per host) were chosen. The ratio of MCs positive to each antibody was determined by scoring 3000 MCs per ...
Records of Acanthocephala infections in human are rare, but cases of infections by 7 different species have been reported ( ... Only a few cases of Acanthocephala infections have been reported in humans, and Moniliformis moniliformis is the most common ... Altered behavior in two species of blattid cockroaches infected with Moniliformis moniliformis (Acanthocephala). J Parasitol. ... Taraschewski H. In Baker JR, Muller R, Rollinson D eds, Host-parasite interaction in Acanthocephala: a morphological approach. ...
The Acanthocephala[change , change source]. The Acanthocephala, a group of parasitic worms previously considered to be a ...
Lab 5: Diversity: Monogenea and Acanthocephala. Overview. The Monogenea is the second major class of flukes. The monogeneans ... Some older references place the Acanthocephala and Nematoda in the same phylum, Nemathelminthes, based on the presence of a ...
Acanthocephala. A distinct phylum of helminths (parasitic worms), commonly known as the spiny- or thorny-headed worms. The ... phylum Acanthocephala comprises three classes: Archiacanthocephala, Palaeacanthocephala, and Eoacanthocephala (a suggested ...
Acanthocephala 800 229 28.62 Sipuncula 145 35 24.14 Mollusca 66535 5070 7.62 ...
Acanthocephala. 1,200. x. x. 2 or more. x. x. x Annelids. Leeches. 400. x. x. 1. x. x. ...
Acanthocephala. (redirected from acanthocephalid). Also found in: Dictionary, Thesaurus, Medical. Acanthocephala. A distinct ... Acanthocephala. [ə‚kan·thō′sef·ə·lə] (invertebrate zoology) The spiny-headed worms, a phylum of helminths; adults are parasitic ... Female Acanthocephala are unique in that the ovary exists as a distinct organ only in the very early stages of development and ... Acanthocephala. a class of parasitic invertebrates of the phylum Nemathelminthes that inhabit the intestine of vertebrates. The ...
Acanthocephala. Ancylodiscoidinae gen. sp. (Luzon - aquarium). Remarks: Native to Laos, Thailand and Cambodia, this aquarium ...
Acanthocephala. Pallisentis (Pallisentis) nandai (Barisal, Chittagong, Dhaka, Sylhet?). P. (Demidueterospinus) ophiocephali ( ...
Acanthocephala may be stained and mounted as permanent slides or, like the nematodes, cleared in phenol or glycerol. ... Acanthocephala. Place in water to evert the proboscis. (Some proboscises may evert almost immediately; others require several ...
A, Acanthocephala; B, Bdelloidea; M, Monogononta; E, Eurotatoria (Bdelloidea + Monogononta); L, Lemniscea (Bdelloidea + ... Only support values for Eurotatoria and Lemniscea are shown as the monophylies of Bdelloidea, Monogononta, and Acanthocephala ... or Bdelloidea and Acanthocephala as sister taxa (Lemniscea). Both outgroup choice and method of inference affected the ... and the phylum Acanthocephala are inconclusive. In particular, Bdelloidea lacks molecular-based phylogenetic appraisal. I ...
  • The most notable feature of the acanthocephala is the presence of an anterior , protrudible proboscis that is usually covered with spiny hooks (hence the common name: thorny headed worm). (thefullwiki.org)
  • v niektorých systémoch sa rozlišuje medzi taxónom Syndermata a kmeňom Rotifera (kmeň Rotifera v takom prípade nezahŕňa buď Acanthocephala alebo ani Seisonida). (wikipedia.org)
  • V súčasných systémoch sa (vrátane alebo bez Acanthocephala) obyčajne zaraďuje ako kmeň Rotifera (Syndermata) do (prípadnej skupiny Gnathifera a tá do) nadkmeňa špirálovce (Spiralia). (wikipedia.org)
  • The three rotifer classes and the Acanthocephala make up a clade called Syndermata. (pearltrees.com)
  • This study assessed the autopsy findings of 454 Leontopithecus specimens, 14 of which (3.1 percent) were infected by intestinal Acanthocephala identified as Prosthenorchis elegans (Diesing, 1861). (bvsalud.org)
  • The acanthocephala are thought to be intermediate between the cestodes and nematodes. (cdc.gov)
  • Acanthocephala are highly modified parasites that live in the intestine of vertebrates, thus their feeding biology is so different that their alimentary system, including pharynx and jaws, is totally reduced. (zmuc.dk)
  • A new acanthocephalan family, the Isthmosacanthidae (Acanthocephala: Echinorhynchida), with the description of Isthmosacanthus fitzroyensis n. g., n. sp. (wikipedia.org)
  • 2000. Phylogenetic relationships of Acanthocephala based on analysis of 18S ribosomal RNA gene sequences. (tolweb.org)
  • 1998. Phylogenetic relationships of the acanthocephala inferred from 18S ribosomal DNA sequences. (tolweb.org)
  • The study was compiled to add new data to the ground pattern of the Acanthocephala for analysis of the phylogenetic relationships within the Gnathifera. (semanticscholar.org)
  • History[edit] The earliest recognisable description of Acanthocephala - a worm with a proboscis armed with hooks - was made by Italian author Francesco Redi (1684). (pearltrees.com)