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Cystidicoloides Tenuissima
''Cystidicoloides tenuissima'' is a species of nematodes in the order Spirurida and family Cystidicolidae. It is a parasite of salmonid fish (salmon, trout and their allies) in the northern hemisphere and has mayflies as the alternate host. Ecology Adult ''Cystidicoloides tenuissima'' are found in the stomachs of salmonid fish. The fish, mostly trout and juvenile salmon, acquire the worms by feeding on infected mayflies which are the alternate hosts of the parasite. In the River Swincombe in England, the only mayfly in which the parasite develops is the sepia dun (''Leptophlebia marginata''). In Czechoslovakia, nymphs of ''Ephemera danica'', '' Habrophlebia lauta'' and '' Habrophlebiodes modesta'' were found to be capable of transmitting infection, and the larvae were found to be able to survive into the winged adult mayfly stage. When the stone loach (''Barbatula barbatula''), a fish in the family Balitoridae, was experimentally infected, the nematodes did not develop beyond t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal
Animals are multicellular, eukaryotic organisms in the Kingdom (biology), biological kingdom Animalia. With few exceptions, animals Heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, are Motility, able to move, can Sexual reproduction, reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of Cell (biology), cells, the blastula, during Embryogenesis, embryonic development. Over 1.5 million Extant taxon, living animal species have been Species description, described—of which around 1 million are Insecta, insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have Ecology, complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a Symmetry in biology#Bilate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Host (biology)
In biology and medicine, a host is a larger organism that harbours a smaller organism; whether a parasite, parasitic, a mutualism (biology), mutualistic, or a commensalism, commensalist ''guest'' (symbiont). The guest is typically provided with nourishment and shelter. Examples include animals playing host to parasitic worms (e.g. nematodes), cell (biology), cells harbouring pathogenic (disease-causing) viruses, a Fabaceae, bean plant hosting mutualistic (helpful) Rhizobia, nitrogen-fixing bacteria. More specifically in botany, a host plant supplies nutrient, food resources to micropredators, which have an evolutionarily stable strategy, evolutionarily stable relationship with their hosts similar to ectoparasitism. The host range is the collection of hosts that an organism can use as a partner. Symbiosis Symbiosis spans a wide variety of possible relationships between organisms, differing in their permanence and their effects on the two parties. If one of the partners in an ass ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nymph (biology)
In biology, a nymph is the immature form of some invertebrates, particularly insects, which undergoes gradual metamorphosis (hemimetabolism) before reaching its adult stage. Unlike a typical larva, a nymph's overall form already resembles that of the adult, except for a lack of wings (in winged species). In addition, while a nymph moults, it never enters a pupal stage. Instead, the final moult results in an adult insect. Nymphs undergo multiple stages of development called instars. This is the case, for example, in Orthoptera (crickets, grasshoppers and locusts), Hemiptera (cicadas, shield bugs, whiteflies, aphids, leafhoppers, froghoppers, treehoppers etc.), mayflies, termites, cockroaches, mantises, stoneflies and Odonata (dragonflies and damselflies). Nymphs of aquatic insects, as in the Odonata, Ephemeroptera, and Plecoptera, are also called naiads, an Ancient Greek name for mythological water nymphs. Usage of the term 'naiad' is no longer popular among entomologists, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Balitoridae
The hillstream loaches or river loaches are a family, the Balitoridae, of small fish from South, Southeast and East Asia. The family includes about 202 species. They are sometimes sold as "lizardfish" or (in Germany) "flossensaugers". Many of the species are popular for aquaria, species in the genus ''Sewellia'' are most commonly sold in the aquaria trade. They have a number of similarities with the Cobitidae, their sibling family of "loaches", such as multiple barbels around the mouth. They should not be confused with the loricariids, which look similar but are a family of catfish. Most species are rheophilic, living in swift, clear and well-oxygenated streams. Several species of the family live in fast-flowing streams or torrents and have modified ventral fins used for clinging to rocks. The subfamily Nemacheilinae has recently been separated as a distinct family, Nemacheilidae (stone loaches) and several genera have been separated into the family Gastromyzontidae The Gast ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stone Loach
The stone loach (''Barbatula barbatula'') is a European species of fresh water ray-finned fish in the family Nemacheilidae. It is one of nineteen species in the genus ''Barbatula''. Stone loaches live amongst the gravel and stones of fast flowing water where they can search for food. The most distinctive feature of this small fish is the presence of barbels around the bottom jaw, which they use to detect their invertebrate prey. The body is a mixture of brown, green and yellow. Found in the North eastern states of India Description The stone loach is a small, slender bottom-dwelling fish that can grow to a length of , but typically is around . Its eyes are situated high on its head and it has three pairs of short barbels on its lower jaw below its mouth. It has a rounded body that is not much laterally flattened and is a little less deep in the body than the spined loach (''Cobitis taenia'') and lacks that fish's spines beneath the eye. It has rounded dorsal and caudal fins with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habrophlebiodes
''Habrophlebiodes'' is a genus of mayflies in the family Leptophlebiidae Leptophlebiidae is a family belonging to the Ephemeropterans that are commonly known as the prong-gilled mayflies or leptophlebiids. It is the only family in the superfamily Leptophlebioidea. There are around 131 genera and 640 described specie .... References * Mayflies Mayfly genera Insects of Europe {{mayfly-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habrophlebia
''Habrophlebia'' is a genus of pronggilled mayflies in the family Leptophlebiidae. There are about nine described species in ''Habrophlebia''. Species These nine species belong to the genus ''Habrophlebia'': * '' Habrophlebia antoninoi'' Alba-Tercedor, 2000 * '' Habrophlebia consiglioi'' Biancheri, 1959 * '' Habrophlebia eldae'' Jacob & Sartori, 1984 * '' Habrophlebia fusca'' (Curtis, 1834) * '' Habrophlebia gilliesi'' Peter, 1963 * '' Habrophlebia lauta'' McLachlan, 1884 * '' Habrophlebia tenella'' Kang & Yang, 1994 * '' Habrophlebia vaillantorum'' Thomas, 1986 * '' Habrophlebia vibrans'' Needham, 1907 i c g b Data sources: i = ITIS, c = Catalogue of Life, g = GBIF, b = Bugguide.net References * Further reading * * * * * * Mayfly genera Insects of Europe Mayflies {{mayfly-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ephemera Danica
''Ephemera danica'', the green drake or green drake mayfly, is a species of mayfly in the genus '' Ephemera''. Description ''Ephemera danica'' can reach an imago size of in males, while females are larger, reaching . This mayfly, with its characteristic markings and three tails ( Cerci), is the most commonly seen of British Ephemeridae. Imago wings are translucent with dark veining, while in subimago they are dull and yellowish with brown veins. Moreover, forelegs and the tails of the spinners are very much longer than in duns. Mouthparts are non-functional, as adults do not feed. These insects are part of the aerial plankton and usually they are food for swallows, trouts and many amphibians and spiders. Life cycle The life cycle usually takes one or two years, but sometimes the developing nymphal forms may last for up to three years. Nymphs can reach about of length. They dig tunnels into the gravel in the beds of rivers and feed by filtering organic detritus. They emerge in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptophlebia Marginata
''Leptophlebia marginata'', the sepia dun, is a species of mayfly in the family Leptophlebiidae. It is native to Europe and North America where it is distributed widely near lakes, ponds and slow-moving streams. The larvae, which are known as nymphs, are aquatic. Distribution and habitat ''Leptophlebia marginata'' occurs in the holarctic region, in Europe and North America, including both temperate and Arctic habitats. It is associated with the edges of lakes and ponds, and the backwaters of slow-moving rivers and streams. Ecology Adult ''Leptophlebia marginata'' emerge from the aquatic nymph's final moult during daytime in early summer. The final instar nymph crawls to the surface of the water, or climbs onto an emergent plant stem, a stick or a rock, its skin splits and it emerges as a winged adult. The males fly in swarms during the day. Fertilized females have about 1200 eggs and fly over the water, dipping the tips of their abdomens in the water to lay small batches of eggs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River Swincombe
The River Swincombe is a tributary of the West Dart River that flows through Dartmoor national park in Devon, south-west England. It rises south-east of Princetown, and flows 2 km south-east to Foxtor Mires, where it turns north-east to meet the West Dart near Hexworthy Hexworthy is a hamlet on Dartmoor, in Devon, England. It lies on the West Dart River a mile upstream from Dartmeet. Historically in the parish of Lydford, since 1987 it has been in the civil parish of Dartmoor Forest. Hexworthy has an inn, .... The first 2 km are known as the Strane River. Some maps show that the source starts north of Nakers Hill and heads north west to the east of Foxtor Mires where it meets the Strane River which (on some maps) is its own river. References External links UK Rivers Guidebook Rivers of Devon Dartmoor 1Swincombe {{England-river-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mayfly
Mayflies (also known as shadflies or fishflies in Canada and the upper Midwestern United States, as Canadian soldiers in the American Great Lakes region, and as up-winged flies in the United Kingdom) are aquatic insects belonging to the order Ephemeroptera. This order is part of an ancient group of insects termed the Palaeoptera, which also contains dragonflies and damselflies. Over 3,000 species of mayfly are known worldwide, grouped into over 400 genera in 42 families. Mayflies have ancestral traits that were probably present in the first flying insects, such as long tails and wings that do not fold flat over the abdomen. Their immature stages are aquatic fresh water forms (called "naiads" or "nymphs"), whose presence indicates a clean, unpolluted and highly oxygenated aquatic environment. They are unique among insect orders in having a fully winged terrestrial preadult stage, the subimago, which moults into a sexually mature adult, the imago. Mayflies "hatch" (emerge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nematode
The nematodes ( or grc-gre, Νηματώδη; la, Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant-Parasitism, parasitic nematodes also known as eelworms. They are a diverse animal phylum inhabiting a broad range of environments. Less formally, they are categorized as Helminths, but are taxonomically classified along with Arthropod, arthropods, Tardigrade, tardigrades and other moulting animalia, animals in the clade Ecdysozoa, and unlike platyhelminthe, flatworms, have tubular digestion, digestive systems with openings at both ends. Like tardigrades, they have a reduced number of Hox genes, but their sister phylum Nematomorpha has kept the ancestral protostome Hox genotype, which shows that the reduction has occurred within the nematode phylum. Nematode species can be difficult to distinguish from one another. Consequently, estimates of the number of nematode species described to date vary by author and may change rapidly over ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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