|
Backswimmer
Notonectidae is a cosmopolitan family of aquatic insects in the order Hemiptera, commonly called backswimmers because they swim "upside down" (inverted). They are all predators and typically range from in length. They are similar in appearance to Corixidae (water boatmen), but can be separated by differences in their dorsal-ventral coloration, front legs, and predatory behavior. Their dorsum is convex, lightly colored without cross striations. Their front tarsi are not scoop-shaped and their hind legs are fringed for swimming. There are about 350 species in two subfamilies: Notonectinae with seven genera, and Anisopinae with four genera. Members in the former subfamily are often larger than those in the latter. Backswimmers swim on their backs, vigorously paddling with their long, hair-fringed hind legs and attack prey as large as tadpoles and small fish. They can inflict a painful "bite" on a human being, actually a stab with their sharp tubular mouthparts (proboscis). They i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anisops
''Anisops'' is a genus of insects in the family Notonectidae. They're sometimes referred to as backswimmers, so called because they swim upside down. Taxonomy ''Anisops'' contains the following species: * '' Anisops letitia'' * '' Anisops varia'' * '' Anisops aglaia'' * '' Anisops apicalis'' * '' Anisops gracilis'' * '' Anisops hypatria'' * '' Anisops jaczewskii'' * '' Anisops leesoniana'' * '' Anisops perpulcher'' * '' Anisops poweri'' * '' Anisops praetexta'' * '' Anisops psyche'' * '' Anisops varius'' * '' Anisops amaisi'' * '' Anisops thienemanni'' * '' Anisops hyperion'' * '' Anisops planifascies'' * '' Anisops crinitus'' * '' Anisops wakefieldi'' - Endemic to New Zealand. * '' Anisops debilis'' * '' Anisops pellucens'' * '' Anisops sardea'' * '' Anisops tahitiensis'' * '' Anisops deanei'' * '' Anisops kuroiwae'' * '' Anisops stali'' * '' Anisops elstoni'' * '' Anisops sardeus'' * '' Anisops nasuta'' * '' Anisops occipitalis'' * '' Anisops assimilis'' - Endemic to New Zeal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Notonectidae
Notonectidae is a Cosmopolitan distribution, cosmopolitan family of aquatic insects in the order Hemiptera, commonly called backswimmers because they swim "upside down" (inverted). They are all predators and typically range from in length. They are similar in appearance to Corixidae, Corixidae (water boatmen), but can be separated by differences in their dorsal-ventral coloration, front Arthropod leg#Insects, legs, and predatory behavior. Their dorsum is convex, lightly colored without cross striations. Their front tarsi are not scoop-shaped and their hind legs are fringed for swimming. There are about 350 species in two subfamilies: Notonectinae with seven genera, and Anisopinae with four genera. Members in the former subfamily are often larger than those in the latter. Backswimmers swim on their backs, vigorously paddling with their long, hair-fringed hind legs and attack prey as large as tadpoles and small fish. They can inflict a painful "bite" on a human being, actually a s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arthropod Leg
The arthropod leg is a form of jointed appendage of arthropods, usually used for walking. Many of the terms used for arthropod leg segments (called podomeres) are of Latin origin, and may be confused with terms for bones: ''coxa'' (meaning hip (anatomy), hip, : ''coxae''), ''trochanter'', ''femur'' (: ''femora''), ''tibia'' (: ''tibiae''), ''tarsus'' (: ''tarsi''), ''ischium'' (: ''ischia''), ''metatarsus'', ''carpus'', ''dactylus'' (meaning finger), ''patella'' (: ''patellae''). Homology (biology), Homologies of leg segments between groups are difficult to prove and are the source of much argument. Some authors posit up to eleven segments per leg for the most recent common ancestor of Neontology, extant arthropods but modern arthropods have eight or fewer. It has been argued that the ancestral leg need not have been so complex, and that other events, such as successive loss of function of a Homeobox, ''Hox''-gene, could result in Parallel evolution, parallel gains of leg segments ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haemoglobin
Hemoglobin (haemoglobin, Hb or Hgb) is a protein containing iron that facilitates the transportation of oxygen in red blood cells. Almost all vertebrates contain hemoglobin, with the sole exception of the fish family Channichthyidae. Hemoglobin in the blood carries oxygen from the respiratory organs (lungs or gills) to the other tissues of the body, where it releases the oxygen to enable aerobic respiration which powers an animal's metabolism. A healthy human has 12to 20grams of hemoglobin in every 100mL of blood. Hemoglobin is a metalloprotein, a chromoprotein, and a globulin. In mammals, hemoglobin makes up about 96% of a red blood cell's dry weight (excluding water), and around 35% of the total weight (including water). Hemoglobin has an oxygen-binding capacity of 1.34mL of O2 per gram, which increases the total blood oxygen capacity seventy-fold compared to dissolved oxygen in blood plasma alone. The mammalian hemoglobin molecule can bind and transport up to four oxygen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Notonecta Maculata
''Notonecta maculata'' is a backswimmer of the family Notonectidae, found in Europe, including the United Kingdom. Morphology ''Notonecta maculata'' are small, light brown insects of the order Hemiptera. These animals have a number of dark markings on their wings and body, and have large reddish eyes. Their hind legs are modified to be oar-shaped, to allow them to swim in water. These animals can grow up to 2 centimeters in length in their adult stage. This individual species can be distinguished from other ''Notonecta'' species by their mottled brick-coloured forewings. Diet ''Notonecta maculata'' are voracious predators, eating many invertebrate species found in their habitats. In their juvenile stages, they primarily eat ''Daphnia magna'' and zooplankton, and in adult stages they will also include mosquito eggs to their diet, although they will also eat most things that they can find. In their juvenile stages, they select prey based on size - when presented with multiple ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Notonecta Glauca
''Notonecta glauca'', also known as the greater water-boatman or common backswimmer, is a species of aquatic insect in the family Notonectidae. This species is found in large parts of Europe, North Africa, and east through Asia to Siberia and China. In much of its range it is the most common backswimmer species. It is also the most widespread and abundant of the four British water-boatmen. ''Notonecta glauca'' are ''Hemiptera'' (true bug) predators, that are approximately 13–16 mm in length. Females have a larger body size compared to males. These water insects swim and rest on their back (hence their common name "backswimmer" or "water boatman") and are found under the water surface. ''Notonecta glauca'' supports itself under the water surface by using their front legs and mid legs and the back end of its abdomen and rest them on the water surface; They are able to stay under the water surface by water tension, also known as the air-water interface (surface tension). They u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Notonecta Glauca01
''Notonecta'', known as backswimmers or water-boatmen, is a genus of bugs in the family Notonectidae. Species These 70 species belong to the genus ''Notonecta'': * '' Notonecta amplifica'' Kiritshenko, 1931 (Europe, Asia) * '' Notonecta arabiensis'' Hungerford, 1926 (Palearctic) * '' Notonecta bicirca'' Hungerford, 1926 (South America) * '' Notonecta bicircoidea'' Hungerford, 1928 (South America) * '' Notonecta bifasciata'' Guérin-Méneville, 1844 (South America) * '' Notonecta borealis'' Hussey, 1919 (North America) * '' Notonecta canariensis'' Kirkaldy, 1897 (Africa) * '' Notonecta ceres'' Kirkaldy, 1897 (Central America) * '' Notonecta chinensis'' Fallou, 1887 (Southern Asia) * '' Notonecta colombiana'' Hungerford, 1933 (South America) * '' Notonecta compacta'' Hungerford, 1925 (Central America) * '' Notonecta confusa'' Hungerford, 1930 (South America) * '' Notonecta distinctoidea'' Hungerford, 1930 (Central America) * '' Notonecta disturbata'' Hungerford, 192 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proboscis
A proboscis () is an elongated appendage from the head of an animal, either a vertebrate or an invertebrate. In invertebrates, the term usually refers to tubular arthropod mouthparts, mouthparts used for feeding and sucking. In vertebrates, a proboscis is an elongated nose or snout. Etymology First attested in English in 1609 from Latin , the latinisation (literature), latinisation of the Ancient Greek (), which comes from () 'forth, forward, before' + (), 'to feed, to nourish'. The plural as derived from the Greek is , but in English the plural form ''proboscises'' occurs frequently. Invertebrates The most common usage is to refer to the tubular feeding and sucking organ of certain invertebrates such as insects (e.g., Insect mouthparts#Proboscis, moths, butterflies, and mosquitoes), worms (including Acanthocephala, Nemertea, proboscis worms) and gastropod molluscs. Acanthocephala The Acanthocephala, the thorny-headed worms or spiny-headed worms, are characterized by the pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tadpole
A tadpole or polliwog (also spelled pollywog) is the Larva, larval stage in the biological life cycle of an amphibian. Most tadpoles are fully Aquatic animal, aquatic, though some species of amphibians have tadpoles that are terrestrial animal, terrestrial. Tadpoles have some fish-like features that may not be found in adult amphibians, such as a lateral line, gills and swimming tails. As they undergo metamorphosis, they start to develop functional lungs for breathing air, and the diet of tadpoles changes drastically. A few amphibians, such as some members of the frog family Brevicipitidae, undergo direct development i.e., they do not undergo a free-living larval stage as tadpoles instead emerging from eggs as fully formed "froglet" miniatures of the adult morphology (biology), morphology. Some other species hatch into tadpoles underneath the skin of the female adult or are kept in a pouch until after metamorphosis. Having no hard skeletons, it might be expected that tadpole fos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genera
Genus (; : genera ) is a taxonomic rank above species and below family as used in the biological classification of living and fossil organisms as well as viruses. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. '' Panthera leo'' (lion) and '' Panthera onca'' (jaguar) are two species within the genus '' Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. phylogenetic analysis should clearly demonstrate both monophyly and validity as a separate lineag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corixidae
Corixidae is a family of aquatic insects in the order Hemiptera. They are found worldwide in virtually any freshwater habitat and a few species live in saline water. There are about 500 known species worldwide, in 55 genera, including the genus '' Sigara''. Members of the Corixidae are commonly known as lesser water boatmen: the term used in the United Kingdom to distinguish species such as '' Corixa punctata'' from '' Notonecta glauca'', or greater water-boatman, an insect of a different family, Notonectidae. Morphology and ecology Corixidae generally have a long flattened body ranging from long. Many have extremely fine dark brown or black striations marking the wings. They tend to have four long rear legs and two short front ones. The forelegs are covered with hairs and shaped like oars, hence the name "water boatman". Their four hindmost legs have scoop- or oar-shaped tarsi to aid swimming. They also have a triangular head with short, triangular mouthparts. Corixidae dwel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buenoa
''Buenoa'' is a genus of Notonectidae, backswimmer. It was created by George Willis Kirkaldy in 1904 to include all species of ''Anisops'' from the Western Hemisphere with a two-segmented front tarsus (insect), tarsus in males, reserving the latter genus for Eastern Hemisphere species with a one-segmented front tarsus in males. It contains 69 described species. Species * ''Buenoa absidata'' Truxal, 1953 * ''Buenoa albida'' (Champion, 1901) * ''Buenoa alterna'' Truxal, 1953 * ''Buenoa amazona'' Padilla-Gil, 2003 * ''Buenoa amnigenoidea'' Nieser, 1970 * ''Buenoa amnigenopsis'' Nieser, 1975 * ''Buenoa amnigenus'' (White, 1879) * ''Buenoa analoga'' Padilla-Gil, 2012 * ''Buenoa anomala'' Padilla-Gil, 2010 * ''Buenoa antigone'' (Kirkaldy, 1899) * ''Buenoa arida'' Truxal, 1953 * ''Buenoa arizonis'' Bare, 1931 * ''Buenoa artafrons'' Truxal, 1953 * ''Buenoa burtsa'' Padilla-Gil, 2010 * ''Buenoa communis'' Truxal, 1953 * ''Buenoa confusa'' Truxal, 1953 * ''Buenoa crassipes'' (Champion, 190 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
