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Ceriodaphnia Quadrangula
''Ceriodaphnia'' is a genus of the Daphniidae; the genus was described in 1853 by James Dwight Dana. It has cosmopolitan distribution. Species: * ''Ceriodaphnia dubia'' (Richard, 1894) * '' Ceriodaphnia quadrangula'' (O.F. Müller, 1785) * ''Ceriodaphnia reticulata ''Ceriodaphnia'' is a genus of the Daphniidae; the genus was described in 1853 by James Dwight Dana. It has cosmopolitan distribution. Species: * ''Ceriodaphnia dubia ''Ceriodaphnia dubia'' is a species of water flea in the class Branchiopod ...'' (Jurine, 1820) References {{Taxonbar, from=Q6549092 Cladocera Branchiopoda genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daphniidae
Daphniidae is a family of water fleas in the order Anomopoda. Description Members of the family Daphniidae differ from other, similar diplostracans, such as the Macrotrichidae and Moinidae, in that the antennae of females are short and immobile. Ecology The feeding mechanism of the members of the family Daphniidae differs from that of the Macrotrichidae in allowing the animals to engage in filter feeding, rather than having to scrape food from a surface. They have evolved to fill a number of different ecological niches. '' Scapholeberis'' and '' Megafenestra'' contain species adapted to living around the surface film; '' Simocephalus'' species cling to objects while filter feeding; others have developed a pelagic lifestyle. Taxonomy The family Daphniidae contains 121 species in five genera: *'' Ceriodaphnia'' Dana, 1853 *''Daphnia'' O. F. Müller, 1785 *'' Megafenestra'' Dumont & Pensaert, 1983 *'' Scapholeberis'' Schoedler, 1858 *'' Simocephalus'' Schoedler, 1858 The members ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Dwight Dana
James Dwight Dana Royal Society of London, FRS FRSE (February 12, 1813 – April 14, 1895) was an American geologist, mineralogist, volcanologist, and zoologist. He made pioneering studies of mountain-building, volcano, volcanic activity, and the origin and structure of continents and oceans around the world. His zoological author abbreviation is Dana. Early life and career Dana was born February 12, 1813, in Utica, New York. His father was merchant James Dana (1780–1860) and his mother was Harriet Dwight (1792–1870). Through his mother he was related to the Dwight New England family of missionaries and educators including uncle Harrison Gray Otis Dwight and first cousin Henry Otis Dwight. He showed an early interest in science, which had been fostered by Fay Edgerton, a teacher in the Utica high school, and in 1830 he entered Yale College in order to study under Benjamin Silliman the elder. Graduating in 1833, for the next two years he was teacher of mathematics to midshi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cosmopolitan Distribution
In biogeography, cosmopolitan distribution is the term for the range of a taxon that extends across all or most of the world in appropriate habitats. Such a taxon, usually a species, is said to exhibit cosmopolitanism or cosmopolitism. The extreme opposite of a cosmopolitan species is an endemic one, being found only in a single geographical location. Qualification The caveat “in appropriate habitat” is used to qualify the term "cosmopolitan distribution", excluding in most instances polar regions, extreme altitudes, oceans, deserts, or small, isolated islands. For example, the housefly is highly cosmopolitan, yet is neither oceanic nor polar in its distribution. Related terms and concepts The term pandemism also is in use, but not all authors are consistent in the sense in which they use the term; some speak of pandemism mainly in referring to diseases and pandemics, and some as a term intermediate between endemism and cosmopolitanism, in effect regarding pandemism as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceriodaphnia Dubia
''Ceriodaphnia dubia'' is a species of water flea in the class Branchiopoda, living in freshwater lakes, ponds, and marshes in most of the world. They are small, generally less than in length. Males are smaller than females. ''C. dubia'' moves using a powerful set of second antennae, and is used in toxicity testing of wastewater treatment plant effluent water in the United States. Climate change and particularly ultraviolet radiation B may seriously damage ''C. dubia'' populations, as they seems to be more sensitive than other cladocerans such as ''Daphnia pulex ''Daphnia pulex'' is the most common species of water flea. It has a cosmopolitan distribution: the species is found throughout the Americas, Europe, and Australia. It is a model species, and was the first crustacean to have its genome sequenced. ...'' or ''D. pulicaria''''.'' References Cladocera Crustaceans described in 1894 {{branchiopoda-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceriodaphnia Quadrangula
''Ceriodaphnia'' is a genus of the Daphniidae; the genus was described in 1853 by James Dwight Dana. It has cosmopolitan distribution. Species: * ''Ceriodaphnia dubia'' (Richard, 1894) * '' Ceriodaphnia quadrangula'' (O.F. Müller, 1785) * ''Ceriodaphnia reticulata ''Ceriodaphnia'' is a genus of the Daphniidae; the genus was described in 1853 by James Dwight Dana. It has cosmopolitan distribution. Species: * ''Ceriodaphnia dubia ''Ceriodaphnia dubia'' is a species of water flea in the class Branchiopod ...'' (Jurine, 1820) References {{Taxonbar, from=Q6549092 Cladocera Branchiopoda genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceriodaphnia Reticulata
''Ceriodaphnia'' is a genus of the Daphniidae; the genus was described in 1853 by James Dwight Dana. It has cosmopolitan distribution. Species: * ''Ceriodaphnia dubia ''Ceriodaphnia dubia'' is a species of water flea in the class Branchiopoda, living in freshwater lakes, ponds, and marshes in most of the world. They are small, generally less than in length. Males are smaller than females. ''C. dubia'' moves u ...'' (Richard, 1894) * '' Ceriodaphnia quadrangula'' (O.F. Müller, 1785) * '' Ceriodaphnia reticulata'' (Jurine, 1820) References {{Taxonbar, from=Q6549092 Cladocera Branchiopoda genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cladocera
The Diplostraca or Cladocera, commonly known as water fleas, are a superorder of small crustaceans that feed on microscopic chunks of organic matter (excluding some predatory forms). Over 1000 species have been recognised so far, with many more undescribed. The oldest fossils of diplostracans date to the Jurassic, though their modern morphology suggests that they originated substantially earlier, during the Paleozoic. Some have also adapted to a life in the ocean, the only members of Branchiopoda to do so, even if several anostracans live in hypersaline lakes. Most are long, with a down-turned head with a single median compound eye, and a carapace covering the apparently unsegmented thorax and abdomen. Most species show cyclical parthenogenesis, where asexual reproduction is occasionally supplemented by sexual reproduction, which produces resting eggs that allow the species to survive harsh conditions and disperse to distant habitats. Description They are mostly long, with t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
