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Parviluciferaceae
Parviluciferaceae is a family of perkinsozoans, a group of endoparasitic protists present in aquatic environments. Biology and life cycle Members of Parviluciferaceae behave as endoparasitoids of dinoflagellates, an important group of marine phytoplankton. Their life cycle consists of biflagellated zoospores with two unequally sized flagella, that swim toward dinoflagellate hosts, infect them and grow into sporangia that develop more zoospores. All genera share similar sporangium morphology and life cycle. Their main differences regard the morphology of zoospores. '' Dinovorax'' and '' Snorkelia'' zoospores infect the host cell through a germ tube, which is absent in ''Parvilucifera''. Systematics Etymology The name of this family derives from the type genus, ''Parvilucifera''. It derives , referring to the small refractile zoospores that characterize this genus. Classification There are currently four genera accepted in this family. The first to be described, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perkinsea
Perkinsids are single-celled protists that live as intracellular parasites of a variety of other organisms. They are classified as the class Perkinsea within the monotypic phylum Perkinsozoa. It is part of the eukaryotic supergroup Alveolata, along with dinoflagellates, their closest relatives, and another parasitic group known as Apicomplexa. Perkinsids are found in aquatic environments, as parasites of dinoflagellates and various animals. Description All known Perkinsozoa are intracellular parasites of a range of organisms, particularly microalgae and animals. Species of Parviluciferaceae, Pararosariidae and '' Maranthos'' are parasites of dinoflagellates. '' Rastrimonas'' parasitize cryptophyte algae. Xcellidae, Perkinsidae and '' Acrocoelus'' are parasites of various animals: fish, bivalve molluscs and acorn worms, respectively. Perkinsozoa are found in aquatic environments, both marine and freshwater. Systematics Taxonomic history Perkinsids were first ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |