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Calocalanus Pavo
''Calocalanus pavo'' is a species of copepod in the family Paracalanidae. Accessed through the Marine Species Database for Eastern Africa The species was previously placed in genus ''Calanus'' and family Calocalanidae Paracalanidae is a family (biology), family of calanoid copepods, consisting of the following genera: *''Acrocalanus'' Giesbrecht, 1888 *''Calocalanus'' Giesbrecht, 1888 *''Bestiolina'' Andronov, 1991 *''Delibus'' Vives & Shmelava, 2007 *''Paraca .... References Calanoida Crustaceans described in 1852 {{Calanoida-stub ... [...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] |
Species
A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour, or ecological niche. In addition, palaeontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. About 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomen". The first part of a binomen is the name of a genus to which the species belongs. The second part is called the specific name (zoology), specific name or the specific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copepod
Copepods (; meaning 'oar-feet') are a group of small crustaceans found in nearly every freshwater and saltwater habitat (ecology), habitat. Some species are planktonic (living in the water column), some are benthos, benthic (living on the sediments), several species have Parasitism, parasitic phases, and some continental species may live in limnoterrestrial habitats and other wet terrestrial places, such as swamps, under leaf fall in wet forests, bogs, springs, ephemeral ponds, puddles, damp moss, or water-filled recesses of plants (phytotelmata) such as bromeliads and pitcher plants. Many live underground in marine and freshwater caves, sinkholes, or stream beds. Copepods are sometimes used as Ecological indicator, biodiversity indicators. As with other crustaceans, copepods have a larval form. For copepods, the egg hatches into a Crustacean larvae#Nauplius, nauplius form, with a head and a tail but no true thorax or abdomen. The larva molts several times until it resembles the a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paracalanidae
Paracalanidae is a family (biology), family of calanoid copepods, consisting of the following genera: *''Acrocalanus'' Giesbrecht, 1888 *''Calocalanus'' Giesbrecht, 1888 *''Bestiolina'' Andronov, 1991 *''Delibus'' Vives & Shmelava, 2007 *''Paracalanus'' Boeck, 1865 *''Parvocalanus'' Andronov, 1970 *''Pseudoparacalanus'' Robinson, 1948 ''Parvocalanus'' is one of the smallest of the calanoid genera, and ''P. crassirostris'' is thought to be the smallest described calanoid (male prosome = 0.7 mm). Two species, ''P. crassirostris'' and ''P. brevispinis'', are common. The former is a widely distributed subtropical species that feeds largely on small flagellate phytoplankton. Although a subtropical species might be expected to flourish in summer, external factors such as predation can produce anomalous patterns of abundance. For example, in Long Island Sound the species does not reach its peak of abundance until October, when the disappearance of ctenophores relieves predation p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calanus
''Calanus'' is a genus of marine copepod in the family Calanidae (Order Calanoida). The genus was split in 1974, with some species being placed in a new genus, ''Neocalanus ''Neocalanus'' is a genus of marine copepods. They are a dominant component of the open water ecosystems of the northern Pacific Ocean. ''Neocalanus'' are large copepods, reaching body lengths (i.e., prosome length) of more than in ''Neocalanus ...''. The following species are recognised: *'' Calanus aculeatus'' Brady, 1918 *'' Calanus agulhensis'' De Decker, Kaczmaruk & Marska, 1991 *'' Calanus chilensis'' Brodsky, 1959 *'' Calanus dorsalis'' (Rafinesque, 1817) *'' Calanus euxinus'' Hulsemann, 1991 *'' Calanus finmarchicus'' (Gunnerus, 1770) *'' Calanus glacialis'' Jaschnov, 1955 *'' Calanus helgolandicus'' (Claus, 1863) *'' Calanus hyperboreus'' Krøyer, 1838 *'' Calanus jashnovi'' Hulsemann, 1994 *'' Calanus marshallae'' Frost, 1974 *'' Calanus pacificus'' Brodsky, 1948 *'' Calanus propinquus'' Bra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calocalanidae
Paracalanidae is a family (biology), family of calanoid copepods, consisting of the following genera: *''Acrocalanus'' Giesbrecht, 1888 *''Calocalanus'' Giesbrecht, 1888 *''Bestiolina'' Andronov, 1991 *''Delibus'' Vives & Shmelava, 2007 *''Paracalanus'' Boeck, 1865 *''Parvocalanus'' Andronov, 1970 *''Pseudoparacalanus'' Robinson, 1948 ''Parvocalanus'' is one of the smallest of the calanoid genera, and ''P. crassirostris'' is thought to be the smallest described calanoid (male prosome = 0.7 mm). Two species, ''P. crassirostris'' and ''P. brevispinis'', are common. The former is a widely distributed subtropical species that feeds largely on small flagellate phytoplankton. Although a subtropical species might be expected to flourish in summer, external factors such as predation can produce anomalous patterns of abundance. For example, in Long Island Sound the species does not reach its peak of abundance until October, when the disappearance of ctenophores relieves predation p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calanoida
Calanoida is an order of copepods, a group of arthropods commonly found as zooplankton. The order includes around 46 families with about 1800 species of both marine and freshwater copepods between them. Description Calanoids can be distinguished from other planktonic copepods by having first antennae at least half the length of the body and biramous second antennae. However, their most distinctive anatomical trait is the presence of a joint between the fifth and sixth body segments. The largest specimens reach long, but most do not exceed long. Classification The order Calanoida contains the following families: * Acartiidae * Aetideidae * Arctokonstantinidae * Arietellidae * Augaptilidae * Bathypontiidae * Calanidae * Candaciidae * Centropagidae * Clausocalanidae * Diaixidae * Diaptomidae * Discoidae * Epacteriscidae * Eucalanidae * Euchaetidae * Fosshageniidae * Heterorhabdidae * Hyperbionycidae * Kyphocalanidae * Lucicutiidae * Megacalanidae * Me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
