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Andreacarus Voalavo
''Andreacarus voalavo'' is a parasitic mite found on the Malagasy rodent '' Voalavo gymnocaudus''. First described in 2007, it is closely related to ''Andreacarus gymnuromys'' and ''Andreacarus eliurus'', which are found on other Malagasy rodents. The length of the idiosoma, the main body, is 630 to 670 μm in females and 450 to 480 μm in males. Unlike ''A. eliurus'', this species lacks distinct sternal glands (secretory organs) between two lyrifissures (sensory organs) on the lower part of the female body. The '' pilus dentilis'', a sensory organ on the chelicera, is serrate, which distinguishes it from ''A. gymnuromys''. Females of ''A. gymnuromys'' also have a less ornamented sternal shield (covering part of the underparts) and shorter setae (bristles) on the upperparts. Taxonomy and ecology ''Andreacarus voalavo'' was named in 2007 by Ashley Dowling, Andre Bochkov, and Barry OConnor on the basis of 15 specimens found on an individual of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parasitic
Parasitism is a close relationship between species, where one organism, the parasite, lives on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of life. The entomologist E. O. Wilson has characterised parasites as "predators that eat prey in units of less than one". Parasites include single-celled protozoans such as the agents of malaria, sleeping sickness, and amoebic dysentery; animals such as hookworms, lice, mosquitoes, and vampire bats; fungi such as honey fungus and the agents of ringworm; and plants such as mistletoe, dodder, and the broomrapes. There are six major parasitic strategies of exploitation of animal hosts, namely parasitic castration, directly transmitted parasitism (by contact), trophicallytransmitted parasitism (by being eaten), vector-transmitted parasitism, parasitoidism, and micropredation. One major axis of classification concerns invasiveness: an endoparasite lives inside the host's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Name Of A Biological Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. 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 demo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Fauna Of Madagascar
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example ''Cytisus aeolicus'' is an endemite of the Italian flora. ''Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laelapidae
The Laelapidae are a family of mites in the order Mesostigmata. The family is also referred to in the literature as Laelaptidae, which may be the correct spelling. Description Laelapidae have a shield covering all or most of the dorsal surface (holodorsal shield). Ventrally, there is a sternal shield with 3 pairs of setae, a tongue- or flask-shaped genital shield (greatly expanded in ''Ololaelaps'') with usually at least 1 pair of setae, and a small anal shield with 3 circumanal setae. The peritremes are typically long and the peritrematal shields often narrow. Ecology Laelapidae is the most ecologically diverse group of Mesostigmata. As of 2012, there were ten laelapid genera known to be free-living predators in soil, thirty-five that are ectoparasites on mammals (e.g. rodents) and forty-three have species associated with arthropods. Laelapidae are the only family in superfamily Dermanyssoidea to include free-living predators. Among the arthropod-associated laelapids are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cuticle
A cuticle (), or cuticula, is any of a variety of tough but flexible, non-mineral outer coverings of an organism, or parts of an organism, that provide protection. Various types of "cuticle" are non-homologous, differing in their origin, structure, function, and chemical composition. Human anatomy In human anatomy, "cuticle" can refer to several structures, but it is used in general parlance, and even by medical professionals, to refer to the thickened layer of skin surrounding fingernails and toenails (the eponychium), and to refer to the superficial layer of overlapping cells covering the hair shaft ( cuticula pili), consisting of dead cells, that locks the hair into its follicle. It can also be used as a synonym for the epidermis, the outer layer of skin. Cuticle of invertebrates In zoology, the invertebrate cuticle or cuticula is a multi-layered structure outside the epidermis of many invertebrates, notably roundworms and arthropods, in which it forms an exoskelet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anal Shield
Anal may refer to: Related to the anus *Related to the anus of animals: ** Anal fin, in fish anatomy ** Anal vein, in insect anatomy ** Anal scale, in reptile anatomy *Related to the human anus: ** Anal sex Anal sex or anal intercourse is generally the insertion and thrusting of the erect penis into a person's anus, or anus and rectum, for sexual pleasure.Sepages 270–271for anal sex information, anpage 118for information about the clitoris. ..., a type of sexual activity involving stimulation of the anus ** Anal stage, a term used by Sigmund Freud to describe the development during the second year of life ** Anal expulsive, people who have a carefree attitude ** Anal retentive, a person overly uptight or distressed over ordinarily minor problems Places * Anal Island, an island of the Marshall Islands * Añal, New Mexico, a ghost town Other uses * Anāl people, an ethnic group of northeast India and Myanmar ** Anāl language, the Sino-Tibetan language they spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andreacarus
''Andreacarus'' is a genus of mites in the family Laelapidae that are parasitic on small mammals and earwigs in Africa and Madagascar. A number of Australian and New Guinean species were formerly included in the genus, but are now placed in a separate genus '' Juxtalaelaps''. The genus includes the following species: * ''Andreacarus brachyuromys'' Dowling et al., 2007 (on the rodent ''Brachyuromys'' in Madagascar) * ''Andreacarus eliurus'' Dowling et al., 2007 (on the rodent ''Eliurus'' in Madagascar) * ''Andreacarus galidia'' Dowling et al., 2007 (on the carnivoran ''Galidia'' in Madagascar) * ''Andreacarus gymnuromys'' Dowling et al., 2007 (on the rodent ''Gymnuromys'' in Madagascar) * ''Andreacarus hemicentetes'' Fain, 1991 (on the tenrec ''Hemicentetes'' in Madagascar) * ''Andreacarus matthyssei'' Fain, 1991 (on the rodent '' Cricetomys'' in Nigeria) * ''Andreacarus petersi'' Radford, 1953 (on the rodents ''Cricetomys'', ''Arvicanthis'', and ''Mastomys'' and the earwig ''Hemim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northern Highlands
The Northern Highlands are a mountainous biogeographical region of northern Madagascar. The region includes the Tsaratanana Massif (with the highest mountain of Madagascar, Maromokotro) and smaller nearby massifs such as Marojejy, Anjanaharibe-Sud, and Manongarivo. The Mandritsara Window separates the Northern from the Central Highlands and apparently acts as a barrier to dispersal between the two highlands, leading to species pairs such as '' Voalavo gymnocaudus'' (Northern Highlands) and '' Voalavo antsahabensis'' (Central Highlands). None of the montane endemics Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ... of Tsaratanana are shared with the major massifs of the Central Highlands.Raxworthy and Nussbaum, 1998, table 2 Natural regions References Literature cite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marojejy
Marojejy National Park () is a national park in the Sava region of northeastern Madagascar. It covers and is centered on the Marojejy Massif, a mountain chain that rises to an elevation of . Access to the area around the massif was restricted to research scientists when the site was set aside as a strict nature reserve in 1952. In 1998, it was opened to the public when it was converted into a national park. It became part of the World Heritage Site known as the Rainforests of the Atsinanana in 2007. "Unique in the world, a place of dense, jungly rainforests, sheer high cliffs, and plants and animals found nowhere else on earth", Marojejy National Park has received plaudits in the ''New York Times'' and ''Smithsonian Magazine'' for its natural beauty and rich biodiversity that encompasses critically endangered members of the silky sifaka. To that end, a global consortium of conservation organizations, including the Lemur Conservation Foundation, Duke Lemur Center and Madag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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