Phylum Rotifera: Taxonomic History, Characteristics and.
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Royce M. Pinkston Prof. Jefferson English 102 30 September 2009 Classification Essay What we wear has an impact on what we believe and who we are personally. Fashion has played a major role in classifying people and his or her personality type. Fashion is broken down into five different categories, urban, gothic, athletic, formal, and prep.
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Scheme of Classification 4. Systematic Resume. Introduction to Phylum Rotifera: The animals commonly known as rotifers constitute the phylum Rotifera. They along with protozoans and small crustaceans (Cyclops, Daphnia, Cypris etc.) comprise the fresh water zooplankton and are important in nutrient recycling in aquatic system.
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Rotifers have bilateral symmetry and a variety of different shapes. The body of a rotifer is divided into a head, trunk, and foot, and is typically somewhat cylindrical. There is a well-developed cuticle, which may be thick and rigid, giving the animal a box-like shape, or flexible, giving the animal a worm-like shape; such rotifers are respectively called loricate and illoricate.
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Seasonal and spatial variation in zooplankton community structure and their relation to possible controlling variables in Lake Okeechobee.
In contrast, all collothecid rotifers are ambush raptors (Collotheca, Stephanoceros). Once a prey enters the infundibular region of the corona of these rotifers, long setae (Collotheca) or arms (Stephanoceros) fold over the prey, capturing it much like the action of a Venus flytrap. All members of the family Atrochidae lack setae.
Collotheca tetralobata was reported to differ from closely resembling Collotheca ornata by the presence of 2 longer lobes and 2 shorter lobes, paired lateral antennae, very long holdfast and interlobal cilia and the absence of pentagonal arrangement of 5 short lobes and very reduced holdfast.
As always classification is not constant, and in addition authorities for some species are variously reported (especially for Ehrenberg, detailed in this note) so some of these may be mislabeled. If you have any corrections, improved translations, or additional sources for names please let me know.
Introduction. Classification schemes differ slightly in how they regard the four rotifer groups: Seisonidea, Bdelloidea, Monogononta, and Acanthocephala, the latter being an obligatorily parasitic taxon previously treated as a distinct phylum (Garey et al., 1996; Garey et al., 1998; Mark Welch and Meselson, 2000, Fontaneto and Jondelius, 2011, Sielaff et al., 2016).
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