Казанский (Приволжский) федеральный университет, КФУ
КАЗАНСКИЙ
ФЕДЕРАЛЬНЫЙ УНИВЕРСИТЕТ
 
THE FIRST REPORT OF A PARASITIC 'TURBELLARIAN' FROM A CEPHALOPOD MOLLUSC, WITH DES­CRIPTION OF OCTOPOXENUS ANTARCTICUS GEN. NOV., SP. NOV. (PLATYHELMINTHES: FECAMPIIDA: NOTENTERIDAE).
Форма представленияСтатьи в зарубежных журналах и сборниках
Год публикации2023
Языкрусский
  • Бисерова Наталья Михайловна, автор
  • Библиографическое описание на языке оригинала Gordeev I., Biserova N., Zhukova K., Ekimova I. 2022. The first report of a parasitic 'turbellarian' from a cephalopod mollusc, with description of Octopoxenus antarcticus gen. nov., sp. nov. (Platyhelminthes: Fecampiida: Notenteridae). Journal of Helminthology. V.26. Pp1-11. DOI: 10.1017/S0022149X22000657
    Аннотация Parasitic 'turbellarians' are known from various animals such as echinoderms, crustaceans, annelids, bivalve and gastropod molluscs. So far, however, no 'turbellarians' have been reported from cephalopods. In this paper we report a parasitic 'turbellarian' from the giant Antarctic octopus, Megaleledone setebos. We dissected two specimens of M. setebos caught in the Ross Sea (Antarctica) and found numerous worms in their intestine and liver. The worms were spherical or oblong and had two morphologically different poles. The frontal pole bears a small conical protrusion containing large elongated pear-shaped frontal glands and large polygonal cells. The ducts of the frontal glands open terminally to form the frontal organ. The caudal pole has an opening shaped as a folded tube connected by the genital pore with a common genital atrium, which continues into a canal with a muscular sheath. The worms were identified as 'turbellarians' from the family Notenteridae (Fecampiida). This family contains only one species, Notentera ivanovi, reported from the gut of a polychaete at the White Sea. The worms that we found in the gastrointestinal tract of the octopuses were morphologically similar to N. ivanovi but differed from it in several important respects. Phylogenetic analysis based on 28S rDNA gene showed that the newly found worm clustered together with other fecampiids in a highly supported clade and was closely related to N. ivanovi. On the basis of these morphological and molecular data, we described a new species, Octopoxenus antarcticus gen. nov., sp. nov. (Fecampiida: Notenteridae), establishing a new genus to accommodate it and provided an updated diagnosis of the family Notenteridae. This is the first report of a parasitic 'turbellarian' from a cephalopod mollusc.
    Ключевые слова Platyhelminthes, Turbellaria, microscopic anatomy, cephalopoda
    Название журнала Journal of Helminthology
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