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Mertensiidae
Mertensiidae is a family of ctenophores belonging to the order Cydippida. Genera: * '' Callianira'' Péron & Lesueur, 1808 * '' Charistephane'' Chun, 1879 * ''Gastrodes'' Korotneff, 1888 * ''Mertensia ''Mertensia'' is a genus of flowering plants in the family Boraginaceae. They are perennial herbaceous plants with blue or sometimes white flowers that open from pink-tinged buds. Such a change in flower color is common in Boraginaceae and is ca ...'' Lesson, 1830 References Tentaculata {{ctenophore-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mertensia Ovum
''Mertensia ovum'', also known as the Arctic comb jelly or sea nut, is a cydippid comb jelly or ctenophore first described as ''Beroe ovum'' by Johan Christian Fabricius in 1780. It is the only species in the genus ''Mertensia''. Unusually among ctenophores, which normally prefer warmer waters, it is found in the Arctic and adjacent polar seas, mostly in surface waters down to . In addition to being weakly bioluminescent in blues and greens, comb jellies produce a rainbow effect similar to that seen on an oil slick, and which is caused by interference of incident light on the eight rows of moving cilia or comb rows which propel the organism. The comb rows beat sequentially, rather like the action of a Mexican wave. The comb rows also function as chemical sense organs, serving the same role as insect antennae. ''Mertensia ovum'' is the major source of bioluminescence from Arctic gelatinous zooplankton. This species, like other ctenophores, has a large body cavity and is carni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ctenophores
Ctenophora (; ctenophore ; ) comprise a phylum of marine invertebrates, commonly known as comb jellies, that inhabit sea waters worldwide. They are notable for the groups of cilia they use for swimming (commonly referred to as "combs"), and they are the largest animals to swim with the help of cilia. Depending on the species, adult ctenophores range from a few millimeters to in size. Only 100 to 150 species have been validated, and possibly another 25 have not been fully described and named. The textbook examples are cydippids with egg-shaped bodies and a pair of retractable tentacles fringed with tentilla ("little tentacles") that are covered with colloblasts, sticky cells that capture prey. Their bodies consist of a mass of jelly, with a layer two cells thick on the outside, and another lining the internal cavity. The phylum has a wide range of body forms, including the egg-shaped cydippids with retractable tentacles that capture prey, the flat generally combless pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cydippida
Cydippida is an order of comb jellies. They are distinguished from other comb jellies by their spherical or oval bodies, and the fact their tentacles are branched, and can be retracted into pouches on either side of the pharynx. The order is not monophyletic, that is, more than one common ancestor is believed to exist. Anatomy Cydippids have bodies that are more or less rounded, sometimes nearly spherical and other times more cylindrical or egg-shaped; the common coastal "sea gooseberry," '' Pleurobrachia'', has an egg-shaped body with the mouth at the narrow end. From opposite sides of the body extends a pair of long, slender tentacles, each housed in a sheath into which it can be withdrawn. Some species of cydippids have bodies that are flattened to various extents, so that they are wider in the plane of the tentacles. The tentacles are typically fringed with tentilla ("little tentacles"), although a few genera have simple tentacles without these side-branches. The tentacles an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Callianira (ctenophore)
''Callianira'' is a genus of ctenophores belonging to the family Mertensiidae Mertensiidae is a family of ctenophores belonging to the order Cydippida. Genera: * '' Callianira'' Péron & Lesueur, 1808 * '' Charistephane'' Chun, 1879 * '' Gastrodes'' Korotneff, 1888 * ''Mertensia ''Mertensia'' is a genus of flowering p .... The species of this genus are found in Europe, Northern America, Southernmost Southern America, Antarctica. Species: *'' Callianira antarctica'' *'' Callianira bialata'' *'' Callianira compressa'' *'' Callianira cristata'' *'' Callianira diploptera'' *'' Callianira ficalbi'' *'' Callianira hexagona'' References Ctenophore genera Tentaculata {{ctenophore-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastrodes (ctenophore)
''Gastrodes'' is a genus of dirt-colored seed bugs in the family Rhyparochromidae The Rhyparochromidae are a large family of true bugs (order Hemiptera), many of which are commonly referred to as seed bugs. The family includes two subfamilies, more than 420 genera, and over 2,100 described species. Rhyparochromidae are small .... There are about 14 described species in ''Gastrodes''. Species These 14 species belong to the genus ''Gastrodes'': * '' Gastrodes abietum'' Bergroth, 1914 * '' Gastrodes arizonensis'' Usinger, 1938 * '' Gastrodes chinensis'' Zheng, 1981 * '' Gastrodes conicolus'' Usinger, 1933 * '' Gastrodes crassifemur'' Zheng, 1979 * '' Gastrodes grossipes'' DeGeer, 1773 * '' Gastrodes intermedius'' Usinger, 1938 * '' Gastrodes longirostris'' Puton, 1884 * '' Gastrodes pacificus'' (Provancher, 1885–1890) * '' Gastrodes parvulus'' Kerzhner, 1977 * '' Gastrodes piceus'' Zheng, 1979 * '' Gastrodes pilifer'' Zheng, 1979 * '' Gastrodes remotus'' Usinger, 1938 * '' G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
