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Apetaenus Australis
''Apetaenus'' is a genus of beach fly, flies in the family (biology), family Canacidae. They are Endemism, endemic to the subantarctic archipelagos in association with colonies of penguins and other seabirds. Some species have vestigial wings. Species *Subgenus ''Apetaenus (subgenus), Apetaenus'' Eaton, 1875 :*''Apetaenus litoralis, Apetaenus litoralis litoralis'' Alfred Edwin Eaton, Eaton, 1875 :*''Apetaenus litoralis marionensis'' Munari, 2008 :*''Apetaenus litoralis watsoni'' Hardy, 1962 *Subgenus ''Listriomastax'' Enderlein, 1909 :*''Apetaenus enderleini'' Munari, 2007 *Subgenus ''Macrocanace'' Tonnoir and Malloch, 1926 :*''Apetaenus australis'' (Hutton, 1902) :*''Apetaenus littoreus'' (Hutton, 1902) References Canacidae Schizophora genera {{Carnoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vestigial
Vestigiality is the retention, during the process of evolution, of genetically determined structures or attributes that have lost some or all of the ancestral function in a given species. Assessment of the vestigiality must generally rely on comparison with homologous features in related species. The emergence of vestigiality occurs by normal evolutionary processes, typically by loss of function of a feature that is no longer subject to positive selection pressures when it loses its value in a changing environment. The feature may be selected against more urgently when its function becomes definitively harmful, but if the lack of the feature provides no advantage, and its presence provides no disadvantage, the feature may not be phased out by natural selection and persist across species. Examples of vestigial structures (also called degenerate, atrophied, or rudimentary organs) are the loss of functional wings in island-dwelling birds; the human vomeronasal organ; and the hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apetaenus Enderleini
''Apetaenus'' is a genus of beach flies in the family Canacidae. They are endemic to the subantarctic archipelagos in association with colonies of penguins and other seabirds. Some species have vestigial wings. Species *Subgenus ''Apetaenus'' Eaton, 1875 :*'' Apetaenus litoralis litoralis'' Eaton, 1875 :*'' Apetaenus litoralis marionensis'' Munari, 2008 :*''Apetaenus litoralis watsoni'' Hardy, 1962 *Subgenus '' Listriomastax'' Enderlein, 1909 :*'' Apetaenus enderleini'' Munari, 2007 *Subgenus '' Macrocanace'' Tonnoir and Malloch, 1926 :*''Apetaenus australis ''Apetaenus'' is a genus of beach fly, flies in the family (biology), family Canacidae. They are Endemism, endemic to the subantarctic archipelagos in association with colonies of penguins and other seabirds. Some species have vestigial wings. S ...'' (Hutton, 1902) :*'' Apetaenus littoreus'' (Hutton, 1902) References Canacidae Schizophora genera {{Carnoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apetaenus Litoralis Watsoni
''Apetaenus'' is a genus of beach fly, flies in the family (biology), family Canacidae. They are Endemism, endemic to the subantarctic archipelagos in association with colonies of penguins and other seabirds. Some species have vestigial wings. Species *Subgenus ''Apetaenus (subgenus), Apetaenus'' Eaton, 1875 :*''Apetaenus litoralis, Apetaenus litoralis litoralis'' Alfred Edwin Eaton, Eaton, 1875 :*''Apetaenus litoralis marionensis'' Munari, 2008 :*''Apetaenus litoralis watsoni'' Hardy, 1962 *Subgenus ''Listriomastax'' Enderlein, 1909 :*''Apetaenus enderleini'' Munari, 2007 *Subgenus ''Macrocanace'' Tonnoir and Malloch, 1926 :*''Apetaenus australis'' (Hutton, 1902) :*''Apetaenus littoreus'' (Hutton, 1902) References Canacidae Schizophora genera {{Carnoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apetaenus Litoralis Marionensis
''Apetaenus'' is a genus of beach flies in the family Canacidae. They are endemic to the subantarctic archipelagos in association with colonies of penguins and other seabirds. Some species have vestigial wings. Species *Subgenus ''Apetaenus'' Eaton, 1875 :*'' Apetaenus litoralis litoralis'' Eaton, 1875 :*'' Apetaenus litoralis marionensis'' Munari, 2008 :*''Apetaenus litoralis watsoni'' Hardy, 1962 *Subgenus '' Listriomastax'' Enderlein, 1909 :*''Apetaenus enderleini'' Munari, 2007 *Subgenus '' Macrocanace'' Tonnoir and Malloch, 1926 :*''Apetaenus australis ''Apetaenus'' is a genus of beach fly, flies in the family (biology), family Canacidae. They are Endemism, endemic to the subantarctic archipelagos in association with colonies of penguins and other seabirds. Some species have vestigial wings. S ...'' (Hutton, 1902) :*'' Apetaenus littoreus'' (Hutton, 1902) References Canacidae Schizophora genera {{Carnoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penguins
Penguins (order Sphenisciformes , family Spheniscidae ) are a group of aquatic flightless birds. They live almost exclusively in the Southern Hemisphere: only one species, the Galápagos penguin, is found north of the Equator. Highly adapted for life in the water, penguins have countershaded dark and white plumage and flippers for swimming. Most penguins feed on krill, fish, squid and other forms of sea life which they catch with their bills and swallow it whole while swimming. A penguin has a spiny tongue and powerful jaws to grip slippery prey. They spend roughly half of their lives on land and the other half in the sea. The largest living species is the emperor penguin (''Aptenodytes forsteri''): on average, adults are about tall and weigh . The smallest penguin species is the little blue penguin (''Eudyptula minor''), also known as the fairy penguin, which stands around tall and weighs . Today, larger penguins generally inhabit colder regions, and smaller penguin ... [...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] |
Endemism
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 t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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