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Reproduction mode and a genome: an example of seisonid rotifers (Rotifera: Pararotatoria: Seisonidae)
Project IdSGS30/PřF/2014
Main solverMgr. Karel Janko, Ph.D.
Periodr1/2014 - 12/2014
ProviderSpecifický VŠ výzkum
Statefinished
AnotationRotifers (Rotifera) is a group of microscopic invertebrates that along with Acanthocephala comprise the Phylum Syndermata. Rotifers are remarkable by posessing various modes of reproduction (bisexual, facultatively parthenogenetic, and obligatory parthenogenetic, or asexual) that makes them candidate model objects for the evolutionary research of sexual and asexual reproduction. The least investigated in this respect rotifer taxon is Seisonidae, obligatory bisexual rotifers for which no parthenogenetic stages are found. Seisonids are represented by only 4 species dwelling exclusively on marine crustaceans, and their biology is poorly known due to the difficulty in their finding and observation. In spite of the intensive study in genomics of Syndermata during the last decade, stimulated specifically by the interest in the evolution of asexuality, only a tiny part of seisonid genome was sequenced ? namely, in total 9 sequences of mitochondrial cox1, nuclear 18S and 28S genes obtained from 2 Seison species, are available from GenBank. Neither the karyotype, no the gene arrangement within chromosomes of Seisonidae are currently known. Determining the genome structure of Seisonidae is an important step for the understanding of the way how asexual mode of reproduction emerged within Syndermata.