A family of nonbiting midges, in the order DIPTERA. Salivary glands of the genus Chironomus are used in studies of cellular genetics and biochemistry.
A plant genus of the family PONTEDERIACEAE that is used as a biological filter for treating wastewater.
Large natural streams of FRESH WATER formed by converging tributaries and which empty into a body of water (lake or ocean).
A plant genus of the family BROMELIACEAE. Members contain karatasin and balansain (ENDOPEPTIDASES) and BROMELAINS.
A plant genus of the family APIACEAE. Members contain SAPONINS.
Wormlike or grublike stage, following the egg in the life cycle of insects, worms, and other metamorphosing animals.
An order of the class Insecta. Wings, when present, number two and distinguish Diptera from other so-called flies, while the halteres, or reduced hindwings, separate Diptera from other insects with one pair of wings. The order includes the families Calliphoridae, Oestridae, Phoridae, SARCOPHAGIDAE, Scatophagidae, Sciaridae, SIMULIIDAE, Tabanidae, Therevidae, Trypetidae, CERATOPOGONIDAE; CHIRONOMIDAE; CULICIDAE; DROSOPHILIDAE; GLOSSINIDAE; MUSCIDAE; TEPHRITIDAE; and PSYCHODIDAE. The larval form of Diptera species are called maggots (see LARVA).
Animals that have no spinal column.
Number of individuals in a population relative to space.
The variety of all native living organisms and their various forms and interrelationships.
Water containing no significant amounts of salts, such as water from RIVERS and LAKES.
A kingdom of eukaryotic, heterotrophic organisms that live parasitically as saprobes, including MUSHROOMS; YEASTS; smuts, molds, etc. They reproduce either sexually or asexually, and have life cycles that range from simple to complex. Filamentous fungi, commonly known as molds, refer to those that grow as multicellular colonies.
A functional system which includes the organisms of a natural community together with their environment. (McGraw Hill Dictionary of Scientific and Technical Terms, 4th ed)
The monitoring of the level of toxins, chemical pollutants, microbial contaminants, or other harmful substances in the environment (soil, air, and water), workplace, or in the bodies of people and animals present in that environment.
The pattern of any process, or the interrelationship of phenomena, which affects growth or change within a population.
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)
A plant genus of the family FABACEAE. The gums and tanning agents obtained from Acacia are called GUM ARABIC. The common name of catechu is more often used for Areca catechu (ARECA).

HMG1 proteins from evolutionary distant organisms distort B-DNA conformation in similar way. (1/233)

The abundant high-mobility group proteins 1/2 (HMG1/2) represent a group of potent architectural elements of chromatin. They are able to induce strong bends and untwist DNA. Here, we compared the abilities of diverse HMG1 proteins to distort the B-DNA conformation of 30-base pair DNA fragment. The DNA bending was measured in solution by monitoring fluorescence resonance energy transfer between fluorescence probes attached to opposite ends of the DNA fragment. Various insect and plant proteins which differ in size, in composition of their HMG1-box domains (HMG1-BD), and in composition of the N- and the C-terminally flanking regions were analyzed in these experiments. Despite these structural differences the extent of the induced changes in DNA conformation upon binding to various proteins was similar, as the estimated bend angle was 150+/-20 degrees for all the tested proteins. Our results suggest that a set of highly conserved residues stabilizing the tertiary structure of the HMG1-BD mainly determines the extent of DNA bending in the complex. Even extended positively charged regions flanking the HMG1-BD are apparently not able to influence this conformational distortion of DNA.  (+info)

Identification of Chironomus kiiensis allergens, a dominant species of non-biting midges in Korea. (2/233)

Non-biting midges are known to contain potent inhalant allergens. IgE antibody responses to the crude extract of Chironomus kiiensis adults, a dominant chironomid species in Korea, were examined. With the IgE-ELISA or passive cutaneous anaphylaxis reactions, increased levels of chironomid-specific IgE were detected in the skin test positive human sera, or immunized BALB/c mouse sera with the crude extract adsorbed to alum. IgE-immunoblot analysis showed major IgE-reacting protein band patterns, which reacted with more than 50% of the skin test positive human sera, at 110, 80, 73, 46, 40, 37, 34, and 31 kDa. The reactive band patterns were largely similar between skin test positive humans and immune BALB/c mice. However, the bands of 55, 31, 27, 26, 24, and 23 kDa were found only in sensitized humans, but not in immunized mice.  (+info)

Electron tomography reveals posttranscriptional binding of pre-mRNPs to specific fibers in the nucleoplasm. (3/233)

Using electron tomography, we have analyzed whether the Balbiani ring (BR) pre-mRNP particles in transit from the gene to the nuclear pore complex (NPC) are bound to any structure that could impair free diffusion through the nucleoplasm. We show that one-third of the BR particles are in contact with thin connecting fibers (CFs), which in some cases merge into large fibrogranular clusters. The CFs have a specific protein composition different from that of BR particles, as shown by immuno-EM. Moreover, we have identified hrp65 as one of the protein components of the CFs. The sequencing of hrp65 cDNA reveals similarities with hnRNP proteins and splicing factors. However, hrp65 is likely to have a different function because it does not bind to nascent pre-mRNA and is not part of the pre-mRNP itself. Taken together, our observations indicate that pre-mRNPs are not always freely diffusible in the nucleoplasm but interact with fibers of specific structure and composition, which implies that some of the posttranscriptional events that the pre-mRNPs undergo before reaching the NPC occur in a bound state.  (+info)

The Ct-RAE1 protein interacts with Balbiani ring RNP particles at the nuclear pore. (4/233)

RAE1 is an evolutionarily conserved protein that associates with both mRNPs and nucleoporins, and may bridge the interaction between mRNP export cargoes and the nuclear pore complex (NPC). However, the mechanism by which RAE1 functions in mRNA export is still unknown and the time point at which RAE1 interacts with the exported RNP has not been directly investigated. Here we have addressed this question in the Balbiani ring (BR) system of Chironomus tentans using immunoelectron microscopy. The RAE1 protein of C. tentans, Ct-RAE1, is 70% identical to human RAE1/mrnp41 (hRAE1) and is recognized by antibodies raised against hRAE1. As in vertebrate cells, Ct-RAE1 is concentrated at the nuclear envelope and also dispersed throughout the nuclear interior. Here we show that Ct-RAE1 does not bind to the BR particle either cotranscriptionally or in the nucleoplasm. Instead, the interaction between Ct-RAE1 and the exported BR particle occurs at the NPC. Moreover, the localization of Ct-RAE1 at the NPC is correlated with the presence of an exported RNP in the NPC. Finally, the anti-RAE1 antibody does not label the cytoplasmic side of BR particles in transit through the central channel, which indicates that Ct-RAE1 either remains anchored at the nuclear side of the NPC during translocation of the RNP through the central channel or becomes transiently associated with the RNP but is rapidly released into the cytoplasm.  (+info)

Actin bound to the heterogeneous nuclear ribonucleoprotein hrp36 is associated with Balbiani ring mRNA from the gene to polysomes. (5/233)

In the salivary glands of the dipteran Chironomus tentans, a specific messenger ribonucleoprotein (mRNP) particle, the Balbiani ring (BR) granule, can be visualized during its assembly on the gene and during its nucleocytoplasmic transport. We now show with immunoelectron microscopy that actin becomes associated with the BR particle concomitantly with transcription and is present in the particle in the nucleoplasm. DNase I affinity chromatography experiments with extracts from tissue culture cells indicate that both nuclear and cytoplasmic actin are bound to the heterogeneous RNP (hnRNP) protein hrp36, but not to the hnRNP proteins hrp23 and hrp45. The interaction is likely to be direct as purified actin binds to recombinant hrp36 in vitro. Furthermore, it is demonstrated by cross linking that nuclear as well as cytoplasmic actin are bound to hrp36 in vivo. It is known that hrp36 is added cotranscriptionally along the BR mRNA molecule and accompanies the RNA through the nuclear pores and into polysomes. We conclude that actin is likely to be bound to the BR transcript via hrp36 during the transfer of the mRNA from the gene all the way into polysomes.  (+info)

Consecutive steps of phosphorylation affect conformation and DNA binding of the chironomus high mobility group A protein. (6/233)

The high mobility group (HMG) proteins of the AT-hook family (HMGA) lie downstream in regulatory networks with protein kinase C, Cdc2 kinase, MAP kinase, and casein kinase 2 (CK2) as final effectors. In the cells of the midge Chironomus, almost all of the HMGA protein (cHMGA) is phosphorylated by CK2 at two adjacent sites. 40% of the protein population is additionally modified by MAP kinase. Using spectroscopic and protein footprinting techniques, we analyzed how individual and consecutive steps of phosphorylation change the conformation of an HMGA protein and affect its contacts with poly(dA-dT).poly(dA-dT) and a fragment of the interferon-beta promoter. We demonstrate that phosphorylation of cHMGA by CK2 alters its conformation and modulates its DNA binding properties such that a subsequent phosphorylation by Cdc2 kinase changes the organization of the protein-DNA complex. In contrast, consecutive phosphorylation by MAP kinase, which results in a dramatic change in cHMGA conformation, has no direct effect on the complex. Because the phosphorylation of the HMGA proteins attenuates binding affinity and reduces the extent of contacts between the DNA and protein, it is likely that this process mirrors the dynamics and diversity of regulatory processes in chromatin.  (+info)

In situ transcription and splicing in the Balbiani ring 3 gene. (7/233)

The Balbiani ring 3 (BR3) gene contains 38 introns, and more than half of them are co-transcriptionally excised. We have determined the in situ structure of the active BR3 gene by electron tomography. Each of the 20-25 nascent transcripts on the gene is present together with splicing factors and the RNA polymerase II in a nascent transcript and splicing complex, here called the NTS complex. The results indicate that extensive changes in overall shape, substructure and molecular mass take place repeatedly within an NTS complex as it moves along the gene. The volume and calculated mass of the NTS complexes show that, maximally, one complete spliceosome is assembled on the multi-intron transcript at any given time point. The structural data show that the spliceosome is not a structurally well-defined unit in situ and that the C-terminal domain of the elongating RNA polymerase II cannot carry spliceosomal components for all introns in the BR3 transcript. Our data indicate that spliceosomal factors are continuously added to and released from the NTS complexes during transcription elongation.  (+info)

Assembly and transport of a premessenger RNP particle. (8/233)

Salivary gland cells in the larvae of the dipteran Chironomus tentans offer unique possibilities to visualize the assembly and nucleocytoplasmic transport of a specific transcription product. Each nucleus harbors four giant polytene chromosomes, whose transcription sites are expanded, or puffed. On chromosome IV, there are two puffs of exceptional size, Balbiani ring (BR) 1 and BR 2. A BR gene is 35-40 kb, contains four short introns, and encodes a 1-MDa salivary polypeptide. The BR transcript is packed with proteins into a ribonucleoprotein (RNP) fibril that is folded into a compact ring-like structure. The completed RNP particle is released into the nucleoplasm and transported to the nuclear pore, where the RNP fibril is gradually unfolded and passes through the pore. On the cytoplasmic side, the exiting extended RNP fibril becomes engaged in protein synthesis and the ensuing polysome is anchored to the endoplasmic reticulum. Several of the BR particle proteins have been characterized, and their fate during the assembly and transport of the BR particle has been elucidated. The proteins studied are all added cotranscriptionally to the pre-mRNA molecule. The various proteins behave differently during RNA transport, and the flow pattern of each protein is related to the particular function of the protein. Because the cotranscriptional assembly of the pre-mRNP particle involves proteins functioning in the nucleus as well as proteins functioning in the cytoplasm, it is concluded that the fate of the mRNA molecule is determined to a considerable extent already at the gene level.  (+info)

Article Ecotoxicity of bare and coated silver nanoparticles in the aquatic midge, Chironomus riparius. While sediment is generally considered to be the major sink for nanomaterials in aquatic environments, few studies have addressed the ecotoxicity o...
In vertebrates, a nuclear cap-binding complex (CBC) formed by two cap- binding proteins, CBP20 and CBP80, is involved in several steps of RNA metabolism, including pre-mRNA splicing and nuclear export of some RNA polymerase II-transcribed U snRNAs. The CBC is highly conserved, and antibodies against human CBP20 cross-react with the CBP20 counterpart in the dipteran Chironomus tentans. Using immunoelectron microscopy, the in situ association of CBP20 with a specific pre-mRNP particle, the Balbiani ring particle, has been analyzed at different stages of pre-mRNA synthesis, maturation, and nucleo-cytoplasmic transport. We demonstrate that CBP20 binds to the nascent pre-mRNA shortly after transcription initiation, stays in the RNP particles after splicing has been completed, and remains attached to the 5 domain during translocation of the RNP through the nuclear pore complex (NPC). The rapid association of CBP20 with nascent RNA transcripts in situ is consistent with the role of CBC in splicing, ...
CALLISTO, M. et al. Diversity and biomass of Chironomidae (Diptera) larvae in an impacted coastal lagoon in Rio de Janeiro, Brazil. Braz. J. Biol. [online]. 2002, vol.62, n.1, pp.77-84. ISSN 1519-6984. http://dx.doi.org/10.1590/S1519-69842002000100010.. Diversity and biomass of Chironomidae larvae were studied between January-November 1993 and March-November 1994 in an impacted lagoon in Rio de Janeiro, Southeastern Brazil, in an attempt to establish the ecological consequences of anthropogenic eutrophication processes. Nine hundred and seventy-five organisms belonging to the Tanypodinae, Orthocladiinae, and Chironominae were collected. Polypedilum (62%) and Chironomus (58%) were the most common genera found in the limnetic and littoral zones.. Keywords : biodiversity; eutrophication; chironomids; bioindicators; coastal lagoon. ...
Balbiani ring (BR) granules are premessenger ribonucleoprotein particles (RNPs) generated in giant chromosomal puffs, the BRs, in the larval salivary glands of the dipteran chironomus tentans. Monoclonal antibodies were raised against nuclear proteins collected on a single-stranded-DNA-agarose affinity column, and two of them were used to identify RNA-binding proteins in BR granules. First, in Western blots (immunoblots), one of the antibodies recognized a 36-kDa protein and the other recognized a 45-KDa protein. Second, both antibodies bound to the BRs in immunocytological experiments. It was shown in cross-linking experiments that the two proteins are associated with heterogeneous nuclear RNP (hnRNP) complexes extracted from C. tentans nuclei. By immunoelectron microscopy of isolated and partly unfolded BR RNPs, it was specifically demonstrated that the BR granules contain the two proteins and, in addition, that both proteins are distributed frequently along the RNP fiber of the particles. ...
However, a Effective Chironomid larvae essay. In choosing your Chironomid larvae essay. The manually curated list will stay topical for the entire 2020!
The base composition of DNA was determined for individual chromosomes from the dipteran Chironomus tentans and for each one of six different segments of one of the chromosomes. The isolations were carried out by micromanipulation and the DNA purines were first extracted from the isolated components and afterwards separated by means of microelectrophoresis on a cellulose fiber. It was found that DNA from this material has an unusual composition corresponding to a guanine + cytosine content of about 30%. This composition was not a function of the polytenic condition but was also found for DNA from testis tissue. Furthermore Drosophila has a more traditional base composition for the bulk of DNA. Statistically significant variations in base data were found between whole chromosomes as well as between the segments from one of the chromosomes.. ...
Hemoglobin, the respiratory protein of the vertebrates, occurs among the insects only in the larvae of the Chironomides, the non-biting midges. In contrast to the hemoglobin of vertebrates,...
The chironomid community in non-wadeable lotic systems was tested as a source of information in the construction of biological metrics which could be used into the bioassessment protocols of large rivers. In order to achieve this, we simultaneously patterned the chironomid community structure and environmental factors along the catchment of the Danube and Sava River. The Self organizing map (SOM) recognized and visualized three different structural types of chironomid community for different environmental properties, described by means of 7 significant abiotic factors (a multi-stressor gradient). Indicator species analysis revealed that the chironomid taxa most responsible for structural changes significantly varied in their abundance and frequency along the established environmental gradients. Out of 40 biological metrics based on the chironomid community, the multilayer perceptron (MLP), an supervised type of artificial neural network, derived 5 models in which the abundance of ...
Fu, Yue, Saether, Ole A., Wang, Xinhua (2012): A review of Paratrichocladius Santos Abreu from the Sino-Indian Region (Diptera: Chironomidae: Orthocladiinae). Zootaxa 3478: 453-482, DOI: 10.5281/zenodo.209364
Fourth instar larvae of Chironomus thummi were permitted to incorporate labeled amino acids and/or sigma-aminolevulinic acid (sigma-ALA) in vivo and in organ cu
Larval stages of the Chironomidae can be found in almost any aquatic or semiaquatic habitat, including treeholes, bromeliads, rotting vegetation, soil, and in sewage and artificial containers. They form an important fraction of the macro zoobenthos of most freshwater ecosystems. They are often associated with degraded or low-biodiversity ecosystems because some species have adapted to virtually anoxic conditions and are dominant in polluted waters. Larvae of some species are bright red in color due to a hemoglobin analog; these are often known as bloodworms.[9] Their ability to capture oxygen is further increased by their making undulating movements.[10] Many reference sources in the past century or so have repeated the assertion that the Chironomidae do not feed as adults, but an increasing body of evidence contradicts this view. Adults of many species do, in fact, feed. The natural foods reported include fresh fly droppings, nectar, pollen, honeydew, and various sugar-rich materials.[1] The ...
This dataset contains the digitized treatments in Plazi based on the original journal article Saether, Ole A., Oyewo, Emmanuel Adeoye (2008): Keys, phylogenies and biogeography of Polypedilum subgenus Uresipedilum Oyewo et Saether (Diptera, Chironomidae). Zootaxa 1806: 1-34, DOI: 10.5281/zenodo.182700 ...
Remote lakes of northern Patagonia are ideal sites for examining climate- and non-climate-driven changes in aquatic ecosystems because there is little evidence of human influence and there is no detai
Coloured scanning electron micrograph (SEM) of Bloodworm (Chironomus tetans) head. The aquatic larval stage of a midge. Chironomus tetans is nonbiting midge in the bloodworm family Chironomidae. The Chironomidae (also known as chironomids or nonbiting midges) are a family of nematoceran flies with a global distribution. Many species superficially resemble mosquitoes. The Chirononus larvae (called bloodworms) can reach relatively high densities. The bloodworm has an iron-porphyrin protein respiratory pigment (red) in its blood and tissue fluids which corresponds to haemoglobin in vertebrates. Males are easily recognized by their plumose antennae. Larval stages of the Chironomidae can be found in almost any aquatic or semiaquatic habitat including: treeholes, bromeliads, rotting vegetation, soil, and in sewage and artificial containers. The Chironomidae are important as indicator organisms. Magnification: x22 when shortest axis printed at 25 - Stock Image C032/3927
Data about the karyotype characteristics, features of chromosomal polymorphism and larval morphology of populations of Chironomus bernensis Wülker & Klötzli, 1973 (Diptera, Chironomidae) from the Central Caucasus (the northern macroslope) and Ciscaucasia are presented. The characteristics of the pericentromeric regions of the long chromosomes of this species from Caucasian populations were very similar to the ones from some European populations (from Poland and Italy), but differed from Swiss and Siberian populations. In the North Caucasian populations 10 banding sequences were found: two in arms A, C, and E, and one in arms B, D, F, and G. Nine of them were already known for this species, and one, berC2, is described for the first time. Cytogenetic distances between all the studied populations of Ch. bernensis show that close geographical location of all studied populations from the Central Caucasus and Ciscaucasia is reflected in their similar cytogenetic structure, but on the other hand, that
We compared feeding rates of the well-established, non-invasive amphipod Gammarus roeselii with those of the invasive Dikerogammarus villosus at different prey densities and different temperatures in laboratory experiments using chironomid larvae as prey. Feeding rates were very variable in both species but higher in the invader species than in the well-established non-invasive species. These results were age independent. At high temperature (18-20 °C) and high prey density (≥1000 prey m-2) one large adult D. villosus consumed 6-9 prey day-1 on average while one G. roeselii consumed 4-7 prey d-1 and one smaller D. villosus of a length of 8-10 mm consumed 2-5 prey d-1 while one G. roeselii of the same length consumed 3 prey d-1. Predation rate decreased considerably from high (18-20 °C) to low temperature (3±2 °C), from 9 to 4 prey predator-1 d-1 in D. villosus and from 7.5 to 2.5 prey predator-1 d-1 in G. roeselii. We conclude that both gammarids consumed a biomass in the range of 1/2 to ...
Midge larvae look something like thin aquatic inchworms. They can be clear, whitish, olive, tan, or bright red. They occur in a variety of aquatic habitats. As adults, they resemble mosquitoes but they never bite.
Chironomidae larvae and mites are abundant and diversified groups that coexist in several environments. However, little importance has been attributed to their ecological relationships (predator-prey, parasitism, etc.). Therefore, the present study aimed to report the predation of mites by Tanypodinae larvae in Neotropical quartzite caves.
Chironomids (Diptera: Chironomidae; non-biting midges) are distributed worldwide, occupying a range of freshwater habitats such as streams, lakes and ponds. Mating occurs in the air during twilight (Armitage et al., 1995). After mating, the male dies, and the female descends to oviposit on the water surface. The eggs are laid in the form of egg batches (EB), each containing thousands of eggs wrapped in a gelatinous layer. Since the adults do not feed and are short lived, most females lay only once or twice and die soon after. Females usually oviposit in two stages, at the start of the evening and around sunrise. After emerging from the egg, the larva descends to the bottom of the water, where it feeds on the substrate and on suspended matter in the water. Then, 2-3 weeks later, the larva pupates and once the metamorphosis is complete, the pupa swims to the water surface, where the adult emerges into the air and is ready to mate (Pinder, 1986). Mating takes place within a couple of ...
Non-biting midges are one of the most diverse and widespread dipteran groups known. They inhabit virtually the entire range of aquatic ecosystems, both fresh and marine, as well as semi-terrestrial and terrestrial habitats. Most species have aquatic wormlike larval stages that start as egg masses laid on the water surface. After going through a pupal stage, floating at the surface of the water, a full-grown midge emerges and flies away. Larvae of some species build a protective capsule made of secretions and debris that they live in during the stage, emerging only long enough to feed.
Acute sensitivity to and biocencentration [i.e. bioconcentration] of copper by Chironomus tentans larvae as affected by changes in water hardness-alkalinity by Joseph D Gauss Download PDF EPUB ...
The karyotypes of six African Chironomus species (Ch. alluaudi Kieffer, 1913, Ch. transvaalensis Kieffer, 1923, Ch. sp. Nakuru, Ch. formosipennis Kieffer, 1908, Ch. prope pulcher Wiedemann, 1830, Ch. sp. Kisumu) were investigated; four of these karyotypes were described for the first time (Ch. sp. Nakuru, Ch. formosipennis, Ch. prope pulcher, Ch. sp. Kisumu). Of the six Chironomus karyotypes, three had “pseudothummi” cytocomplex chromosome arms combinations AE CD BF G (Ch. alluaudi, Ch. transvaalensis, Ch. sp. Nakuru), two had “thummi” cytocomplex arms combinations AB CD EF G (Ch. formosipennis, Ch. prope pulcher), and one had “parathummi” arm combinations AC BF DE G (Ch. sp. Kisumu). Thus, three of the ten main cytocomplexes known were detected in Africa. Detailed photomaps of all chromosome arms, with the exception of arms B and G, were prepared for the karyotypes of Ch. alluaudi, Ch. transvaalensis, Ch. sp. Nakuru, Ch. prope pulcher; the karyotypes of Ch.
2 close-up macro pictures of a Chironomidae (Midges) True Fly Larva, collected from Cascadilla Creek in New York on March 13, 2005.
Acta Limnologica Brasiliensia, 2010, vol. 22, no. 3, p Chironomidae (Diptera) community structure in two subsystems with different states of conservation in a floodplain of southern Brazil Estrutura
The ZSM Diptera collection contains around 12,500 determined species (see lists of families, species, types), representing about 10% of the worlds scientifically described fly fauna. About 1,250 species are represented by type material. Additionally, there are large amounts of material still awaiting conclusive analysis. In the dry collection the core families are Asilidae, Bombyliidae, Conopidae, Diopsidae, Dolichopodidae, Leptogastridae, Limoniidae, Mycetophilidae, Pantophthalmidae, Stratiomyidae, Syrphidae, Tabanidae, Tachinidae, Tephritidae, and Tipulidae. The ZSMs special collection of Chironomidae (non-biting midges) includes about 60 000 microscope slides, making it one of the largest and most important of its kind. Another major part of the Diptera Section is the extensive alcohol collection, with the Chironomidae, Limoniidae and Mycetophilidae particularly well represented in terms of determined material. In addition, it contains much highly valuable yet incompletely studied material ...
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Synthesis of the ribosomal subunits from pre-rRNA requires a large number of trans-acting proteins and small nucleolar ribonucleoprotein particles to execute base modifications, RNA cleavages, and structural rearrangements. We have characterized a novel protein, RNA-binding domain-1 (RBD-1), that is involved in ribosome biogenesis. This protein contains six consensus RNA-binding domains and is conserved as to sequence, domain organization, and cellular location from yeast to human. RBD-1 is essential in Caenorhabditis elegans. In the dipteran Chironomus tentans, RBD-1 (Ct-RBD-1) binds pre-rRNA in vitro and anti-Ct-RBD-1 antibodies repress pre-rRNA processing in vivo. Ct-RBD-1 is mainly located in the nucleolus in an RNA polymerase I transcription-dependent manner, but it is also present in discrete foci in the interchromatin and in the cytoplasm. In cytoplasmic extracts, 20-30% of Ct-RBD-1 is associated with ribosomes and, preferentially, with the 40S ribosomal subunit. Our data suggest that ...
In eukaryotic cells, gene expression involves multi-step processes in the nucleus and the cytoplasm. The different processes engage specific RNA-protein complexes, RNPs. Upon activation of most, if not all genes, a precursor RNA molecule is synthesized that has to be extensively processed and modified. In addition, the RNA has to associate with a distinct set of proteins. The composition of the RNP is often dynamic and changes over time. Several RNPs are exported to the cytoplasm, where they are involved in late steps of gene expression, including the synthesis of proteins.. The aim of this thesis has been to increase our knowledge about specific steps in messenger RNP (mRNP) and ribosomal RNP (rRNP) biogenesis in the eukaryotic cell.. We have characterized a novel protein, RBD-1, that is essential for ribosome biogenesis. RBD-1 contains six RNA-binding domains and is conserved in eukaryotes. In the dipteran Chironomus tentans, RBD-1 (Ct-RBD-1) is mainly located in the nucleolus, in an RNA ...
Applicability of the polymerase chain reaction (PCR) with species-specific primers to obtaining molecular markers for identification of the sibling species of Chironomus plumosus group - C. plumosus and C. balatonicus - has been estimated. The nucleotide sequences of internal transcribed spacer (ITS) from the locus encoding ribosomal RNA (rRNA) were used as the source for designing the species-specific primers. The primers allowing for identification of C. plumosus and C. balatonicus were constructed. One primer pair (plu107F/plu363R) gives the PCR product MAR2, specific of C. plumosus, and the other (bal86F/plu363R), the PCR product MAR6, specific of C. balatonicus. The testing involving 18 species of the genus Chironomus confirmed the specificity of the primers. The results suggest that the PCR with species-specific primers is promising for construction of molecular markers for identification not only of these two, but also of other Chironomus species.. doi: 10.5324/fn.v31i0.1381.. Published ...
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I am interested in evolution, systematics and biogeography, in particular of non-biting midges of the family Chironomidae (Diptera). My research focuses on taxonomy, biology, phylogeny, zoogeography and molecular systematics of genera and species in the tribe Tanytarsini, but I am also involved in work with other groups of animals and plants. Among these, tardigrades through the project Tardigrades in Norwegian forests.. The last few years I have been heavily involved in various priojects testing and using DNA barcoding in biosystematics. I am currently chairing the Norwegian Barcode of Life network and project (NorBOL) which is a national research infrastructure on DNA Barcoding. NorBOL aims to develop a barcode reference database for Norwegian species to support barcoding in applied projects (such as EBAI). I am also involved in the COST action DNAqua-Net as member of the Management Committee and co-lead of the working group on reference libraries.. ...
Benthic invertebrates affect microbial processes and communities in freshwater sediment by enhancing sediment-water solute fluxes and by grazing on bacteria. Using microcosms, the effects of larvae of thewidespread midge Chironomus plumosus on the efflux of denitrification products (N2O and N2+ N2O) and the diversity and abundance of nitrate- and nitrous-oxide-reducing bacteria were investigated. Additionally, the diversity of actively nitrate- and nitrous-oxide-reducing bacteria was analyzed in the larval gut.The presence of larvae increased the total effluxes of N2O and N2+N2O up to 8.6- and 4.2-fold, respectively, which was mostly due to stimulation of sedimentary denitrification; incomplete denitrification in the guts accounted for up to 20% of the N2O efflux. Phylotype richness of the nitrate reductase gene narG was significantly higher in sediment with than without larvae. In the gut, 47 narG phylotypes were found expressed, which may contribute to higher phylotype richness in colonized ...
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In this study, Chironomus Heat Shock Proteins, Cytochrome 450, Glutathione S-transferase, Serine-type endopeptidase gene expressions were compared between polluted field areas (Chironomus plumosus) and under laboratory conditions (Chironomus riparious) to investigate molecular indicators for environmental contaminant stress assessment. Heavy metal (Al, Fe, Mn, Cu, Cr, Zn, Se, Pb, As, Cd) concentrations in sediments collected from three study areas exceeded the reference values. Moreover, HSPs, CYP450 and GST gene expression except SP for C. plumosus showed higher expression than C. riparious gene expression ...
UCL Discovery is UCLs open access repository, showcasing and providing access to UCL research outputs from all UCL disciplines.
Heavy metals and organophosphorus insecticide is known to act as disruptors for the enzyme system, leading to physiologic disorders. The present study was conducted to investigate the potential use of these enzymes as biomarkers in assessment of contaminated sediments on tropical chironomid species. Acetylcholinesterase (AChE), glutathione-S-transferase (GST) and metallothionein (MT) activity was measured in the fourth-instar chironomid larvae, Chironomus javanus, Kieffer, after either 48-hr or 96-hr exposure to organophosphorus insecticide, chlorpyrifos (0.01- 0.25 mg kg-1) or heavy metal cadmium (0.1-25 mg kg-1). Exposure to chlorpyrifos (0.01 mg kg-1) at 48 and 96 hr significantly of AChE activity (64.2 % -85.9%) and induced GST activity (33.9 - 63.8 %) when compared with control (P,0.05). Moreover, exposure to cadmium (0.1mg kg-1) at 48 and 96 hr also showed significant increas GST activity (11.7 - 40 %) and MT level (9.0 % - 70.5 %) when compared with control (P,0.05). The results indicated ...
As far as I can tell (after looking around on the net), a Gnat is a name given to biting insects, which includes Midges and Mosquitos. Mosquito. Lifespan of Gnats. A mosquito trap that reduces the mosquito, gnat and midge population. Non-Biting Midges, commonly called simply gnats, are often mistaken for mosquitoes by their appearance. Hit enter to search or ESC to close Call Mosquito Squad for gnat control services. Within Diptera they constitute the family Culicidae (from the Latin culex meaning gnat). Midge, Gnats & Mosquito trap - Predator Dynamic. Because of this, they can spread disease. To download this image, create an account . They bite much more often and can carry diseases such as malaria By clicking on Sign up, you agree to Depositphotos Membership Agreement * Full of red blood gnat mosquito pest insect macro - Photo by ia__64. Photo by James Gathany, CDC. Predator Dynamic mosquito hu with scent that attracts Gnats, Midges & Mosquitoes. Mosquitoes prefer a wet, watery ...
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A new species of the genus Mesismittia Brundin, 1956 (Diptera: Chironomidae) from the Neotropics with a cladistic analysis of ... Neotropical and Mexican Mesosmittia Brundin, with description of four new species (Insecta, Diptera, Chironomidae). Spixiana 25 ... Zur Systematik der Orthocladiinae (Dipt., Chironomidae). Rep. Inst. Freshwat. Res. Drottningholm 37: 5-185. Donato, M. 2011. ...
They play a role in bioturbation and resuspension of organic matter and include Diptera (e.g. Chironomidae). Filterers remove ...
"Chironomus riparius (Chironomidae)". schmidt-ottlab.uchicago.edu/. Archived from the original on 30 January 2015. Retrieved 20 ... "Family Chironomidae". lakes.chebucto.org/ZOOBENTH/BENTHOS/benthos.html. Retrieved 30 January 2015. Stief, Peter; Nazarova, ... Chironomidae) in the Assessment of the Postsubmersion Interval". J. Forensic Sci. 60 (3): 822-826. doi:10.1111/1556-4029.12707 ...
Diptera: Chironomidae)". The Journal of Experimental Biology. 209 (Pt 20): 4024-4032. doi:10.1242/jeb.02457. ISSN 0022-0949. ...
This followed the spirit of the family name Chironomidae, which in Ancient Greek means a pantomimist or one who entertains or ... Chironomus annularius (commonly known as bayfly or mufflehead) is a species of non-biting midge in the family Chironomidae. It ... The first documented accounts of the Chironomidae family were in the late 19th or early 20th century in England. Entomologists ... These meanings of names most likely alluded to the swarming behavior and movement of the midges belonging to the Chironomidae ...
Chironomidae, Diptera of Europe, All stub articles, Chironomidae stubs). ... n. (Diptera: Chironomidae). Aquatic Insects 5: 209-226. doi: 10.1080/01650428309361148. Stur E, Ekrem T. 2015. A review of ... Chironomidae IV. (Orthocladiinae, Corynoneurinae, Clunioninae, Diamesinae). Faune de France 23: 1-204. Sæther O.A. 1983. A ... Gymnometriocnemus is a genus of non-biting midges in the subfamily Orthocladiinae of the bloodworm family (Chironomidae). The ...
nov., isolated from a chironomid (Diptera; Chironomidae) egg mass". International Journal of Systematic and Evolutionary ...
Diptera - 2. Nematocera: families Tipulidae to Chironomidae (Chironomidae). R. L. Coe, Paul Freeman & P. F. Mattingly Vol 9 ... Diptères Nématocères Chironomidae. IV. 196 p., 315 fig. Faune n° 23 Séguy, E., 1934. Diptères (Brachycères). 832 p., 903 fig ... Vol 9 Part 2 i. Diptera - 2. Nematocera: families Tipulidae to Chironomidae (Tipulidae). R. L. Coe, Paul Freeman & P. F. ... Diptera - 2. Nematocera: families Tipulidae to Chironomidae (Trichoceridae - Culicidae). R. L. Coe, Paul Freeman & P. F. ...
"Fauna Europaea - Chironomidae". v t e (CS1 Norwegian-language sources (no), Articles with short description, Short description ... His contributions to the database Fauna Europaea, as an expert on Chironomidae, were much appreciated. He resided at Ulriksdal ... He specialized in aquatic Diptera, especially Chironomidae and Chaoboridae. He penned about 265 academic publications (more ...
Among them, Chironomids, two-winged flies that belong to the family Chironomidae, are of greatest ecological importance due to ... Walker, Ian R. (1987-01-01). "Chironomidae (Diptera) in paleoecology". Quaternary Science Reviews. 6 (1): 29-40. Bibcode: ...
... is a genus of non-biting midges of the bloodworm family Chironomidae. The adipose tissue of the larvae of species ... Diptera, Chironomidae) in Sweden". Archiv für Protistenkunde. 144 (3): 271-282. doi:10.1016/S0003-9365(11)80138-7. ISSN 0003- ...
Chironomidae) in Aquascypha hydrophora (Berk.) Reid (Fungi; Stereaceae), with description of the pupae in the Central Amazonian ...
Walker, Ian R. (2001). "Midges: Chironomidae and related Diptera". In Smol, J. P.; Birks, H. J. B.; Last, W. M. (eds.). ... The larvae of some Chironomidae contain hemoglobin and are sometimes referred to as bloodworms. Non-biting midge flies are a ... and sandflies in Australia) Chaoboridae, phantom midges Chironomidae, non-biting midges (also known as muckleheads, muffleheads ... Chironomidae)". Ecotoxicology and Environmental Safety. 209: 111778. doi:10.1016/j.ecoenv.2020.111778. PMID 33338803. (CS1: ...
from Brazil (Diptera: Chironomidae: Orthocladiinae). Zootaxa 979: 1-12. v t e (Articles with short description, Short ... Gynocladius is a parthenogenetic genus in the subfamily Orthocladiinae (Chironomidae). A single species is recorded from ... description is different from Wikidata, Articles with 'species' microformats, Chironomidae, All stub articles, Chironomidae ...
Chironomidae, Insects described in 1850, Nematoceran flies of Europe, All stub articles, Chironomidae stubs). ... A. lucens tend to live near pond edges and lakes, and as most insects in the Chironomidae family, they tend to live in aquatic ... "Chironomidae: Biology, Ecology and Systematics". www.intechopen.com. Retrieved 2022-07-17. v t e (Articles with short ... is a species of insect in the diptera order and belongs to the genus Acricotopus in the family Chironomidae (known better as ...
n. (Diptera: Chironomidae) from Tennessee, USA". Entomologica Scandinavica. 15: 536-539. doi:10.1163/187631284X00389. Suzuki, H ... Apometriocnemus is a genus of non-biting midges in the subfamily Chironominae of the bloodworm family Chironomidae. A. ... Cranston, P. S.; Oliver, D. R. (1988). "ADDITIONS AND CORRECTIONS TO THE NEARCTIC ORTHOCLADIINAE (DIPTERA: CHIRONOMIDAE)". The ... N. from the Palaearctic Region (Diptera: Chironomidae)" (PDF). Tijdschrift voor Entomologie. 142 (1-2): 65-67. doi:10.1163/ ...
This is a list of 647 species in Chironomus, a genus of midges in the family Chironomidae. Chironomus aberratus Keyl, 1961 c g ... n. (Diptera: Chironomidae) from southern Poland". Zootaxa. magnolia press. 3599 (6): 564-576. doi:10.11646/zootaxa.3599.6.5. ( ... Articles with short description, Short description is different from Wikidata, Chironomidae, Lists of insect species). ...
Branch, Hazel E. (1922). "Notes on the Chironomidae of Kansas". Transactions of the Kansas Academy of Science. 31: 48. doi: ...
... is a genus of non-biting midges in the subfamily Chironominae of the bloodworm family Chironomidae. ... Epler, J. H. (1988). "A reconsideration of the genus Apedilum Townes, 1945 (Diptera, Chironomidae)". Spixiana. Supplement 14: ... Tang, H. (2016). "Paralauterborniella from Oriental China (Diptera: Chironomidae)". Oriental Insects. 50 (4): 160-170. doi: ...
"XV International Symposium on Chironomidae" (PDF). Control of pestiferous emergences of Chironomidae: A case study of ... Chironomidae)". [Unpublished report] submitted to Ducks Unlimited, Rancho Cordova, California. James, Van (2001). Ancient Sites ...
... is a genus of flightless marine midges belonging to the subfamily Chironominae in the Chironomidae family. Insects in ... Edwards FW (1926) On marine Chironomidae (Diptera); with descriptions of a new genus and four new species from Samoa. ... Cheng, Lanna Cheng; Huang, Danwei (2014). "Discovery of the flightless marine midge Pontomyia (Diptera: Chironomidae) at ... Huang, D.; Cheng, L. (2011). "The flightless marine midge Pontomyia (Diptera: Chironomidae): ecology, distribution, and ...
Chironomidae, Insects described in 1985, All stub articles, Chironomidae stubs). ... n. (Diptera: Chironomidae) from Finland, with new Nearctic records of previously described species". Insect Systematics & ... Przhiboro, Andrey; Ole A. Sæther (2007). "Limnophyes (Diptera: Chironomidae) from northwestern Russia" (PDF). Aquatic Insects. ...
Diptera - 2. Nematocera: families Tipulidae to Chironomidae (Trichoceridae - Culicidae). Royal Entomological Society, London ...
... is a genus of non-biting midges in the subfamily Tanypodinae of the bloodworm family Chironomidae. G. currani Beck ... Chironomidae)". Insect Systematics & Evolution. 19 (1): 1-26. doi:10.1163/187631289X00014. ISSN 1876-312X. v t e (Articles with ...
Chironomidae, Insects described in 1990, All stub articles, Chironomidae stubs). ... Przhiboro, Andrey; Ole A. Sæther (2007). "Limnophyes (Diptera: Chironomidae) from northwestern Russia" (PDF). Aquatic Insects. ...
Diptera, 1 (exclusive of Ceratopogonidae and Chironomidae). Zoology of Iceland 3 (48A): 1-189. Peder Nielsen - bibliotekar ...
... is a genus of non-biting midges of the bloodworm family Chironomidae. At present A. plumipes (Fries, 1823) is the ... Int Panis, L; Pauwels A; Verheyen R (1995). "Some observations on the Chironomidae of ponds". Bull. Ann. Soc. R. Ent. Belg. 131 ...
... is a genus of European non-biting midges in the subfamily Chironominae of the bloodworm family Chironomidae. It was ... Reiss, F.; Sublette, J.E. (1985). "Beardius new genus with notes on additional Pan-American taxa (Diptera, Chironomidae)". ... Chironomidae)". Journal of the Kansas Entomological Society. 71 (3): 315-382. JSTOR 25085851. SÆTHER, OLE A.; OYEWO, EMMANUEL ... Chironomidae)" (PDF). Revista de la Sociedad Entomológica Argentina. 73 (3-4): 139-144. ...
Diptera 2. Nematocera: families Tipulidae to Chironomidae (Trichoceridae - Culicidae). Royal Entomological Society, London pdf ...
Diptera 2. Nematocera: families Tipulidae to Chironomidae (Trichoceridae - Culicidae). Royal Entomological Society, London pdf ...
Wikimedia Commons has media related to Chironomidae. The Chironomid Home Page Chironomidae and Water Beetles of Florida ... Family Chironomidae at Soil and Water Conservation Society of Metro Halifax Checklist of UK Recorded Chironomidae Chironomidae ... Chironomidae. pp. 635-754. In: R.W. Merritt and K.W. Cummins, eds. An Introduction to the Aquatic Insects of North America. ... Midges: Chironomidae and related Diptera. pp. 43-66, In: J. P. Smol, H. J. B. Birks, and W. M. Last (eds). Tracking ...
... Dataset homepage. Citation. Saether O A, plazi (2012). ... Chironomidae) in Lake Winnipeg, Canada. Zootaxa 3275: 1-19, DOI: 10.5281/zenodo.280836 Taxonomic Coverages. Geographic ... The Chironomus group (Diptera: Chironomidae) in Lake Winnipeg, Canada. Plazi.org taxonomic treatments database. Checklist ...
ÖZKAN, NURCAN (2002) "Five New Chironomidae (Diptera) Species for the Turkish Fauna," Turkish Journal of Zoology: Vol. 26: No. ...
... Hilde Eggermont (UGent) , ... "Fossil Chironomidae (Insecta: Diptera) as Quantitative Indicators of Past Salinity in African Lakes." QUATERNARY SCIENCE ... "Fossil Chironomidae (Insecta: Diptera) as Quantitative Indicators of Past Salinity in African Lakes." QUATERNARY SCIENCE ... "Fossil Chironomidae (Insecta: Diptera) as Quantitative Indicators of Past Salinity in African Lakes." QUATERNARY SCIENCE ...
POLATDEMİR, Naime and ŞAHİN, Yalçın (1997) "Still-Waters Systems In and Around Eskişehir Chironomidae (Diptera) Larvae," ...
Erratum: "Species richness, diversity, and ecology of Chironomidae (Diptera) in Fountain Creek: a Colorado Front Range sandy- ... 2017) "Erratum: Species richness, diversity, and ecology of Chironomidae (Diptera) in Fountain Creek: a Colorado Front Range ...
The male adult of Boreoheptagyia zhengi Lin & Liu, sp. nov. is described and illustrated based on material collected in China. Associated morphological characteristics and reference to its DNA barcode are provided. Boreoheptagyia kurobebrevis (Sasa & Okazawa, 1992) is newly recorded from China based on both a male and female, with additional associated data on the DNA barcode of the male adult. A neighbor-joining tree based on available Boreoheptagyia DNA barcodes and a key to the adults of Boreoheptagyia from China are given.
Tokeshi M, Reinhardt K. Reproductive behaviour in Chironomus anthracinus (Diptera: Chironomidae), with a consideration of the ... Reproductive behaviour in Chironomus anthracinus (Diptera : Chironomidae), with a consideration of the evolution of swarming. ... Reproductive behaviour in Chironomus anthracinus (Diptera: Chironomidae), with a consideration of the evolution of swarming. ... Tokeshi, M. ; Reinhardt, K. / Reproductive behaviour in Chironomus anthracinus (Diptera : Chironomidae), with a consideration ...
GIDROBIONTRUS: LIVE FOOD - Bloodworms (chironomidae)
Biodiversity of Chironomidae of Minnehaha Creek, an Urban Stream in Minneapolis/Saint Paul, Minnesota ... Biodiversity of Chironomidae of Spring Runs in the Saint Croix River Basin ... Collaborative Biodiversity Study of Chironomidae at the North Temperate Lakes Long Term Ecological Research Site ... Assessment of Biodiversity of Chironomidae in Tier 1 SLICE Lakes of Minnesota ...
Chironomidae (Midges) is a family of flies. They visit flowers of purple mountain saxifrage, longstalk starwort, Pyrus malus, ...
Karyotype and chromosome polymorphism of Camptochironomus Pallidivittatus (diptera, chironomidae). I. I. Kiknadze, K. G. ... Karyotype and chromosome polymorphism of Camptochironomus Pallidivittatus (diptera, chironomidae). In: Zoologicheskii Zhurnal. ... Karyotype and chromosome polymorphism of Camptochironomus Pallidivittatus (diptera, chironomidae). Zoologicheskii Zhurnal. 1996 ... Karyotype and chromosome polymorphism of Camptochironomus Pallidivittatus (diptera, chironomidae). / Kiknadze, I. I.; Aimanova ...
De Nederlandse Biodiversiteit: Chironomidae - dansmuggen. Publication. Publication. Natuur van Nederland , Volume 10 - Issue 1 ... 2010). De Nederlandse Biodiversiteit: Chironomidae - dansmuggen. Natuur van Nederland, 10(1), 264-265. ...
Midges (mixed pool of 4,000 Chironomidae 1/10 Kenya (5) Culicoides kingi, C. nivosus, ...
Majumdar T N, Gupta A. Acute toxicity of endosulfan and malathion on Chironomus ramosus (Insecta : Diptera : Chironomidae) from ... Acute toxicity of endosulfan and malathion on Chironomus ramosus (Insecta : Diptera : Chironomidae) from north Cachar hills, ...
History of the Bibliography of the Chironomidae. The first general bibliography of the Chironomidae was published in 1976. It ... How to use the Bibliography of the Chironomidae?. The database can be searched by entering complete or partial, single or ... What does the Bibliography of the Chironomidae include?. The bibliography includes works with content found or (in exceptional ... At the 2006 Chironomidae Symposium in Funchal, he distributed copies of an electronic file with titles through 2004 which has ...
... This true fly was collected from the South Fork Snoqualmie River in Washington ...
A Digital Reference Collection for Singapores ...
Diptera (Chironomidae). *John Epler, Consultant. *Broughton Caldwell, Consultant. Diptera (Other). *Peter Adler, Clemson ...
Midges - Chironomidae :: :: Frit Flies - Chloropidae :: :: Flies - Chyromyidae :: :: Clusiidae Flies :: :: Kelp Flies - ...
On the relationship between vertical microdistribution and adaptations to oxygen stress in littoral Chironomidae (Diptera) ...
Chironomidae. Chironomid communities. Chironomus oceanicus. Cricotopus oceanicus. Halocladius variabilis. Additions. ... Chironomus oceanicus Packard, 1869, a new junior synonym Halocladius variabilis (Staeger, 1839) (Diptera: Chironomidae). ...
146, chironomidae.com. 147, christed.com. 148, complexional.com. 149, consternate.com. 150, cradleman.com. 151, dreaminess.net ...
Chironomidae in the margins was more sensitive to damming than in the main channel. This difference in sensibility sustains the ... A taxocenose de Chironomidae das margens mostrou-se mais sensível ao represamento que a do canal. Esta diferença de ... Impacto de um represamento sobre Chironomidae do remanso de um reservatório fio dágua tropical Articles. Brandimarte, A. L.; ... Abstract We examined the effects of the Mogi-Guaçu river damming (São Paulo State, Brazil) on the Chironomidae fauna. Pre, ...
  • The Chironomidae (informally known as chironomids, nonbiting midges, or lake flies) comprise a family of nematoceran flies with a global distribution. (wikipedia.org)
  • Chironomidae (Midges) is a family of flies . (eol.org)
  • Midges (Chironomidae) resemble mosquitoes but are actually small flies. (mercurynews.com)
  • In this ecosystem, flies in the Family Chironomidae (non-biting midges) dominate the prey trophic level in the avian food web. (ndsu.edu)
  • There are a couple of midges , Chironomidae. (ambericawest.com)
  • Arthropods, especially dipteran insects in the family Chironomidae (non-biting midges), are a primary prey resource for many vertebrate species on Alaska's Arctic Coastal Plain. (ndsu.edu)
  • Wanted, tracked down and identified: Mesozoic non-biting midges of the subfamily Chironominae (Chironomidae, Diptera). (edu.pl)
  • New non-biting midges (Diptera: Chironomidae) from Lower Cretaceous Wealden amber of the Isle of Wight (UK). (edu.pl)
  • Towards the diversity of non-biting midges of the tribe Tanytarsini from Eocene Baltic amber (Diptera: Chironomidae). (edu.pl)
  • Non-biting midges of the tribe Tanytarsini in Eocene amber from the Rovno region (Ukraine): a pioneer systematic study with notes on the phylogeny (Diptera: Chironomidae). (edu.pl)
  • As Chapter 2 of his thesis , " Diversity of wetland non-biting midges (Diptera: Chironomidae) and their responses to environmental factors in Alberta ", my M.Sc. (hproctorlabuofa.blog)
  • like caddis flies, midges don't technically have a nymphal stage, just larva and pupa, but many anglers still refer to midge larva and midge pupa imitations as midge nymphs are the immature developmental stage of a midge or several members of the chironomidae family. (superbtest.com)
  • Biting midges should not be confused with other midges (Chironomidae) that are much larger and resemble mosquitoes but do not bite. (earthpestcontrolservices.com)
  • Real bloodworms (chironomidae larvae, not mosquito larvae) undergo a strict cleaning and sterilization process and are then rapidly frozen to retain maximum nutritional value. (liveaquaria.com)
  • stomach contents consisted of sand, plants, larvae of Ephemeroptera, Trichoptera and Chironomidae, remains of insects and fish scales (Ref. 248 , 78218 ). (mnhn.fr)
  • Total count of aquatic diptera larvae including Chironomidae, Simuliidae, Culicidae. (noaa.gov)
  • A 2007 sampling effort in the Lower Mississippi River yielded eight H. fugitans larvae, providing the opportunity to assess the diet of this large river inhabitant, which includes larval Hydropsychidae (Trichopte ra) and Chironomidae (Diptera), as well as Oligochaeta. (illinois.edu)
  • Vertical distribution of Chironomidae larvae in the karstic travertine barrage Lake Visovac (Croatia) // Late 20th Century Resarch on Chironomidae / Hoffrrichter, Odwin0 (ur. (irb.hr)
  • Chironomidae Midge is species Id possible? (diptera.info)
  • Chironomidae Female Midge for ID help. (diptera.info)
  • In Washington State Chironomidae (midge) larva and pupae, amphipods (scuds), and cladocerans (water. (usgs.gov)
  • Genetic architecture of local adaptation in lunar and diurnal emergence times of the marine midge Clunio marinus (Chironomidae, Diptera). (mpg.de)
  • Strong genetic differentiation and postglacial origin of populations in the marine midge Clunio marinus (Chironomidae, Diptera). (mpg.de)
  • Isolation of 10 polymorphic microsatellite loci in the marine midge Clunio marinus (Chironomidae, Diptera) and their efficient characterization by heteroduplex analysis. (mpg.de)
  • A very clear cabochon with a single, well preserved true midge , family Chironomidae. (ambericawest.com)
  • A peculiar leg structure in the first non-biting midge described from Cambay amber, India (Diptera: Chironomidae). (edu.pl)
  • midge nymphs are the immature developmental stage of a midge or several members of the chironomidae family. (superbtest.com)
  • Fossil Chironomidae (Insecta: Diptera. (ugent.be)
  • IMSEAR at SEARO: Acute toxicity of endosulfan and malathion on Chironomus ramosus (Insecta : Diptera : Chironomidae) from north Cachar hills, Assam, India. (who.int)
  • Chironomidae (Insecta: Diptera) distribution along a pollution gradient in Ethiopian rivers, and their potential for biological water-quality monitoring. (ugent.be)
  • Paleotemperature reconstruction in tropical Africa using fossil Chironomidae (Insecta: Diptera). (ugent.be)
  • 92 species of Chironomidae are described providing new descriptions, a revision for the adult female of Parametriocnemus boreoalpinus Gowin et Thienemann is revised, a possible new genus (larval form only), and 9 larval forms that may represent a new species are described. (semanticscholar.org)
  • A new genus Isthmusimermis gen. n. and new species of mermithids (Nematoda, Mermithidae) from Chironomidae. (organismnames.com)
  • Eonandeva gen. nov., a new distinctive genus from Eocene Baltic amber (Diptera: Chironomidae). (edu.pl)
  • In the Eocene, the extant genus Caladomyia occured in the Palaearctic (Diptera: Chironomidae: Tanytarsini). (edu.pl)
  • Any of a broad group of small, two-winged flies (order Diptera, of families Chironomidae and Ceratopogonidae), which are blood-sucking intermediate hosts for filarial worms-e.g. (thefreedictionary.com)
  • Small, gnatlike flies including those from the families Chironomidae and Ceratopogonidae. (thefreedictionary.com)
  • Vannmidd i ordenen Trombidiformes, fjærmygg og sviknott (Diptera: Chironomidae og Ceratopogonidae) er alle artsrike grupper som ofte lever i de samme naturtypene. (artsdatabanken.no)
  • En hann av sviknotten Dasyhelea bilineata (Ceratopogonidae). (artsdatabanken.no)
  • Total count of aquatic diptera adults including Chironomidae, Simuliidae, Culicidae. (noaa.gov)
  • It is most certainly a fly from Chironomidae , which belongs to the same suborder (Nematocera) as Mosquitoes (Culicidae). (stackexchange.com)
  • Orthocladiinae( Diptera, Chironomidae) from the Novaya Zemlya volume. (yvonne-unden.de)
  • 35 Chironomidae taxa were recorded with Orthocladiinae (20), Chironominae (7), and Podonominae (4) being the most well-represented subfamilies. (bioone.org)
  • Since June of 2011, the technical-curatorial responsibilities for the Diptera section collections (except those of Chironomidae) have been assigned to Dieter Doczkal, who performs the corresponding duties as he sees fit, under general supervision by Axel Hausmann, the head of the ZSM's entomology department. (mwn.de)
  • Please report to moderators any spammers or attempts to use this forum for purposes other than the exchange of scientific information related to the science of Chironomidae or entomology. (chironomidae.net)
  • Higher abundance and biomass of Oligochaeta, Chironomidae, Asellus aquaticus and Ephemeroptera was observed in the ponds, while Gammaridae in the running water sections. (edu.pl)
  • The number of Asellus aquaticus, Ostracoda, Oligochaeta, Chironomidae and Megaloptera was positively associated with sediment, average depth, macrophytes and age of the pond. (edu.pl)
  • However, they are not mosquitoes of any sort, and the term "sandflies" generally refers to various species of biting flies unrelated to the Chironomidae. (wikipedia.org)
  • A Revision of the nearctic species of Orthocladius (Orthocladius) van der Wulp (Kieffer) (Diptera : Chironomidae). (carleton.ca)
  • Dense, Continent-Wide, Molecular and Morphological Sampling Supports Old and New Taxa in Australian Pentaneurine Tanypodinae (Diptera: Chironomidae). (edu.bn)
  • Periphyton biomass, periphyton inorganic mass and Chironomidae abundance also increased as buffer width narrowed, with the largest differences occurring in the clear-cut and 10-m buffer treatments. (britishecologicalsociety.org)
  • Relative Chironomidae biomass and abundance increased in the unfenced watersheds in response to grazing (p = 0.008 and p (siu.edu)
  • No differences were observed in relative Chironomidae biomass and abundance, NO3-, and TP from pre-PBG to post-PBG indicating the recovery of these metrics. (siu.edu)
  • Larval stages of the Chironomidae can be found in almost any aquatic or semiaquatic habitat, including treeholes, bromeliads, rotting vegetation, soil, and in sewage and artificial containers. (wikipedia.org)
  • Carrillo, MA, Cannon, CA & Ferrington, LC 2004, ' Effect of sex and age on the supercooling point of the winter-active Diamesa mendotae Muttkowski (Diptera: Chironomidae) ', Aquatic Insects , vol. 26, no. 3-4, pp. 243-251. (umn.edu)
  • Diptera Chironomidae) and other aquatic biota as biological indicators of past changes in temperature, water chemistry, oxygen regime, nutrient cycling and substrate availability in African lakes. (ugent.be)
  • The oldest known chironomids of the tribe Tanytarsini (Diptera: Chironomidae) indicate plesiomorphic character states. (edu.pl)
  • Multiple additions and corrections have been published over the years, most significantly in the many annual contributions by Odwin Hoffrichter in the Chironomus Newsletter on Chironomidae Research . (ntnu.no)
  • In 1995, Hoffrichter started to publish annual bibliographies as comprehensive as feasible in the Chironomus Newsletter on Chironomidae Research , and continued to do so until November 2010. (ntnu.no)
  • The bibliography includes works with content found or (in exceptional cases) assumed to pertain significantly to the fly family Chironomidae. (ntnu.no)
  • Leah, I'd suggest you start by searching "life cycle" with Chironomidae"(family), Hirudinea (subclass), and Amphipoda (order) to learn the basics of their general life cycle. (troutnut.com)
  • Chironomidae was the most common invertebrate family across all species, and Rosaceae and Orobanchaceae were the most common plant families. (datadryad.org)
  • Chironomidae do have a pair of prolegs at each end and preserved individuals tend to curl into a 'C'. Identification past family requires slide-mounted heads. (wikieducator.org)
  • The bibliography of Chironomidae literature was initiated by Ernst J. Fittkau, Friedrich Reiss and Odwin Hoffrichter almost forty years ago. (ntnu.no)
  • At the same time a donation from the former Max-Planck-Institute of Limnology in Plön brought to the ZSM the most extensive and important Chironomidae collections and documents of August Thienemann, Friedrich Lenz, and E. J. Fittkau. (mwn.de)
  • The first fossil record of Nandeva Wiedenbrug, Reiss et Fittkau (Diptera: Chironomidae) in early Eocene Fushun amber from China. (edu.pl)
  • 10182588 Fittkau from Gastrointestinal Brazil( Diptera, Chironomidae). (villaelena.de)
  • Immature Stages and Female Adult of Alotanypus Aris Roback with a Redescription of the Male Adult (Diptera: Chironomidae: Macropelopiini): Notulae Naturae of The Acad. (dianepublishing.net)
  • Supercooling points (SCP) of adult Diamesa mendotae Muttkowski, 1915 (Diptera: Chironomidae) were determined at 3, 5, 9, 12 and 17 days post-collection. (umn.edu)
  • The biodiversity of the Chironomidae often goes unnoticed because they are notoriously difficult to identify and ecologists usually record them by species groups. (wikipedia.org)
  • The Biodiversity of Singapore- Chironomidae sp. (biodiversity.online)
  • For example, Chironomidae abundance was generally greater in the 10-m and 30-m buffer treatments than in controls, whereas this was not always the case in the clear-cut treatment. (britishecologicalsociety.org)
  • The Chironomidae diversity based on records from early Eocene Cambay amber, India, with implications on habitats of fossil Diptera. (edu.pl)
  • n., and Usambaromyiinae, a new subfamily among the Chironomidae (Diptera). (wikimedia.org)
  • A new species of the subfamily Buchonomyiinae (Diptera: Chironomidae) from Cretaceous Burmese amber [Nowy gatunek podrodziny Buchonomyiinae (Diptera: Chironomidae) z kredowego bursztynu birmańskiego]. (edu.pl)
  • This project aims to determine if it is possible to examine the response of the biota using Chironomidae, diatoms and fossil pigments in Danish lakes to climate forcing (e.g. the 1975/6 drought) against a background of other changing environmental conditions. (lboro.ac.uk)
  • The biota at Sarup Sø reflects lake-level fluctuations due to precipitation variability (Chironomidae) and eutrophication as a result of anthropogenic landscape disturbance during the mid-Neolithic. (lboro.ac.uk)
  • Chironomidae in the delta of the River Neretva // 13th International Symposium on Chironomidae / Hoffrichter, Odwin (ur. (irb.hr)
  • The Chironomidae collections are curated by Martin Spies in consultation with Marion Kotrba. (mwn.de)
  • New species of Limnophyes Eaton (Diptera, Chironomidae) from China and synonymy of L. fuscipygmus Tokunaga , 1940. (wikimedia.org)
  • This taxonomic reference and identification key makes use of the known taxonomic details on these Chironomidae species and provides details on their geographical distribution, ecology, habitats, environmental tolerance values for species, and traitbased morphological characters. (semanticscholar.org)
  • Misgurnus anguillicaudatus feed on macroinvertebrates, especially Chironomidae (non-biting. (usgs.gov)
  • A discussion on how to transform the bibliography into a database started at the International Chironomidae Symposium in Amsterdam in 1991. (ntnu.no)
  • Chironomidae had variable feeding ecology, most species feed on algae and other small soil organisms they can filtrate. (wikipedia.org)
  • A new fossil Stempellinella from Eocene Baltic amber, with systematic notes and amendment of the generic diagnosis (Diptera: Chironomidae). (edu.pl)
  • Minute and diverse in fossil sticky stuff: Tanytarsini (Diptera: Chironomidae) from early Eocene Indian Cambay amber. (edu.pl)