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First findings of сentrohelid heliozoans (Haptista: Centroplasthelida) from marine and freshwater environments of South KoreaDmitry G. Zagumyonnyi, Kristina I. Prokina, Denis V. TikhonenkovProtistologydoi:10.21685/1680-0826-2020-14-4-4статья
Дата последнего поиска статьи во внешних источниках: 8 апреля 2022 г.
- Авторы: Zagumyonnyi Dmitry G., Prokina Kristina I., Tikhonenkov Denis V.
- Журнал: Protistology
- Том: 14
- Номер: 4
- Год издания: 2020
- Издательство: Protozoological Society affiliated with RAS, Institute of Cytology RAS, Penza State University
- Местоположение издательства: Russia
- Первая страница: 227
- Последняя страница: 245
- DOI: 10.21685/1680-0826-2020-14-4-4
- Аннотация: The morphology of the siliceous scales and organic spicules of centrohelid heliozoans collected from two river sites and one marine site in South Korea has been investigated. Five species including one subspecies, one centrohelidian identified at the genus level, and Heterophrys-like organisms were examined. New species, Pterocystis jongsooparkii sp. nov. was described. This heliozoan is characterized by the unique morphology of spine scales: lateral wings ornamented by 10–15 transverse slits; the sides of lateral wings are bent into a marginal rim, and distal sides of lateral wings are sharply cut, forming “shoulders”; the distal part of the shaft has several rounded teeth. The SSU rRNA gene phylogeny placed P. jongsooparkii within Pterista as a separate phylogenetic lineage in an unresolved trichotomy with Pterocystidae C and the clade, uniting representatives of Pterocystidae B, Heterophryidae, and environmental sequence Env H10.4. Heliozoan Raphidocystis sp. is distinguished from other Raphidocystis species by the presence of only one type of scales – almost circular plate scales with a slight medial thickening, and was not assigned to any known species. All the species found in this survey are new for South Korea. The present study complements the available information on the centrohelid phylogeny and biogeography. The morphological data obtained from observed species expand our knowledge on the intraspecific variability of centrohelid heliozoans.
- Добавил в систему: Загумённый Дмитрий Геннадьевич