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Echinophthiriidae
Echinophthiriidae is a family (biology), family of louse, lice in the suborder sucking louse, Anoplura, the sucking lice. This family of lice are parasitism, parasites of pinniped, seals and the North American river otter, river otter, and are the only insects that infest aquatic hosts.Leonardi, M. S., et al. (2012)Scanning electron microscopy of ''Antarctophthirus microchir'' (Phthiraptera: Anoplura: Echinophthiriidae): Studying morphological adaptations to aquatic life. ''Micron'' 43(3) 929-36. These lice have adaptations influenced by the anatomy of their hosts. Because some marine mammals, such as fur seals, have a layer of air trapped under their waterproof coats that insulates them against cold water, their lice actually live in a mostly dry, warm habitat. Other mammals have blubber for insulation, so their skin is in contact with the water; their lice parasites live in a cold aquatic environment. Lice in this family have a chaetotaxy characterized by three kinds of setae: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antarctophthirus Microchir
''Antarctophthirus microchir'' is a parasite found on pinnipeds (commonly known as sea lions and seals) and is an ectoparasite with the ability to live on the surface of mammals while tolerating submersion in salt water. Life cycle Larval stages: Eggs and first larval stage are mainly found on seal pups, which have less contact with water during the beginning of their lives. It is shown that the parasitic eggs have less resistance to water. Nymph: Legs and spine are developed. Adult: Exterior structures are developed. The haustellum functions as a suction and provides stability of the lice on mammal surface. All stages of ''A. microchir'' were found on aquatic mammals, suggesting the lice completes the entire life cycle within the host. Main structures * Chaetotaxy: Spines, scales, and hairs. Spines typically have grooves. * Spiracles: Serve as a clear membrane for the lice. * Legs: Hinge and middle legs are larger than forelegs. Often used to hold on to hairs of host. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sucking Louse
Sucking lice (known scientifically as Anoplura) are a parvorder of around 550 species of lice. All sucking lice are blood-feeding ectoparasites of mammals. They can cause localized skin irritations and are vectors of several blood-borne diseases. At least three species or subspecies of Anoplura are parasites of humans; the human condition of being infested with sucking lice is called pediculosis. ''Pediculus humanus'' is divided into two subspecies, ''Pediculus humanus humanus'', or the human body louse, sometimes nicknamed "the seam squirrel" for its habit of laying of eggs in the seams of clothing, and ''Pediculus humanus capitis'', or the human head louse. ''Pthirus pubis'' (the human pubic louse) is the cause of the condition known as crabs. Classification Sucking lice are classified as a parvorder called Anoplura, named by Leach in 1815. Anoplura belongs to the infraorder Phthiraptera, which contains all lice, and is part of the larger order Psocodea, which al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antarctophthirus Mawsoni
''Antarctophthirus'' is a genus of lices belonging to the family Echinophthiriidae. The species of this genus are found in arctic regions. Species: *'' Antarctophthirus callorhini'' *'' Antarctophthirus carlinii'' *'' Antarctophthirus lobodontis'' *'' Antarctophthirus mawsoni'' *''Antarctophthirus microchir ''Antarctophthirus microchir'' is a parasite found on pinnipeds (commonly known as sea lions and seals) and is an ectoparasite with the ability to live on the surface of mammals while tolerating submersion in salt water. Life cycle Larval stag ...'' *'' Antarctophthirus ogmorhini'' *'' Antarctophthirus trichechi'' References {{Taxonbar, from=Q13654752 Lice ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antarctophthirus Trichechi
''Antarctophthirus'' is a genus of lices belonging to the family Echinophthiriidae. The species of this genus are found in arctic regions. Species: *''Antarctophthirus callorhini'' *'' Antarctophthirus carlinii'' *'' Antarctophthirus lobodontis'' *''Antarctophthirus mawsoni'' *''Antarctophthirus microchir ''Antarctophthirus microchir'' is a parasite found on pinnipeds (commonly known as sea lions and seals) and is an ectoparasite with the ability to live on the surface of mammals while tolerating submersion in salt water. Life cycle Larval stag ...'' *'' Antarctophthirus ogmorhini'' *'' Antarctophthirus trichechi'' References {{Taxonbar, from=Q13654752 Lice ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antarctophthirus Lobodontis
''Antarctophthirus'' is a genus of lices belonging to the family Echinophthiriidae. The species of this genus are found in arctic regions. Species: *''Antarctophthirus callorhini'' *''Antarctophthirus carlinii'' *'' Antarctophthirus lobodontis'' *''Antarctophthirus mawsoni'' *''Antarctophthirus microchir'' *'' Antarctophthirus ogmorhini'' *''Antarctophthirus trichechi ''Antarctophthirus'' is a genus of lices belonging to the family Echinophthiriidae. The species of this genus are found in arctic regions. Species: *''Antarctophthirus callorhini'' *'' Antarctophthirus carlinii'' *'' Antarctophthirus lobodo ...'' References {{Taxonbar, from=Q13654752 Lice ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weddell Seal
The Weddell seal (''Leptonychotes weddellii'') is a relatively large and abundant Earless seal, true seal with a Subantarctic, circumpolar distribution surrounding Antarctica. The Weddell seal was discovered and named in the 1820s during expeditions led by United Kingdom of Great Britain and Ireland, British Seal hunting, sealing captain James Weddell to the area of the Southern Ocean now known as the Weddell Sea. The Life history theory, life history of this species is well documented since it occupies fast ice environments close to the Antarctica, Antarctic continent and often adjacent to Antarctic bases. It is the only species in the genus ''Leptonychotes''. Description Weddell seals measure about long and weigh . They are amongst the largest seals, with a rather bulky body and short fore flippers relative to their body length. Males weigh less than females, usually about or less. Male and female Weddell seals are generally about the same length, though females can be sligh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earless Seal
The earless seals, phocids, or true seals are one of the three main groups of mammals within the seal lineage, Pinnipedia. All true seals are members of the family Phocidae (). They are sometimes called crawling seals to distinguish them from the fur seals and sea lions of the family Eared seal, Otariidae. Seals live in the oceans of both hemispheres and, with the exception of the more tropical monk seals, are mostly confined to Polar region, polar, subpolar, and temperate climates. The Baikal seal is the only species of exclusively freshwater seal. Taxonomy and evolution Evolution The earliest known fossil earless seal is ''Noriphoca gaudini'' from the late Oligocene or earliest Miocene (Aquitanian (stage), Aquitanian) of Italy. Other early fossil phocids date from the mid-Miocene, 15 million years ago in the north Atlantic. Until recently, many researchers believed that phocids evolved separately from otariids and Walrus, odobenids; and that they evolved from otter-like ani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
