Genetic analysis confirms the freshwater origin of the endemic Caspian sponges (Demospongiae, Spongillida, Metschnikowiidae).

Autor: Sokolova AM; N. K. Koltzov Institute of Developmental Biology, Russian Academy of Science, Vavilova str., 26, Moscow, 119334, Russia A. N. Severtsov Institute of Ecology and Evolution, Russian Academy of Science Moscow Russia.; A. N. Severtsov Institute of Ecology and Evolution, Russian Academy of Science, Leninskij prosp. 33, Moscow, 119071, Russia N. K. Koltzov Institute of Developmental Biology, Russian Academy of Science Moscow Russia., Palatov DM; A. N. Severtsov Institute of Ecology and Evolution, Russian Academy of Science, Leninskij prosp. 33, Moscow, 119071, Russia N. K. Koltzov Institute of Developmental Biology, Russian Academy of Science Moscow Russia.; Biological faculty, Moscow State University, Leninskie Gory 1 / 12, Moscow, 119991, Russia Moscow State University Moscow Russia., Itskovich VB; Limnological Institute of Siberian Branch of Russian Academy of Science, Ulan-Batorskaya, 3, Irkutsk, 664033, Russia Limnological Institute of Siberian Branch of Russian Academy of Science Irkutsk Russia.
Jazyk: angličtina
Zdroj: ZooKeys [Zookeys] 2020 Feb 24; Vol. 915, pp. 1-16. Date of Electronic Publication: 2020 Feb 24 (Print Publication: 2020).
DOI: 10.3897/zookeys.915.47460
Abstrakt: The Caspian Sea is a unique inland brackish waterbody inhabited by highly endemic fauna. This fauna consists of species of both marine and freshwater origin. Some Caspian invertebrates cannot be confidently referred to as animals of either origin. The endemic monophyletic family of sponges, Metschnikowiidae, is among them. Although these sponges are considered as fresh water in the modern literature, no researcher has seen them alive for many years, and its status is actually unconfirmed. Here, we present the first photos of Metschnikowia tuberculata Grimm, 1877 and report evidence for its freshwater origin based on analysis of ITS1 and ITS2 sequences and partial sequences of CO1 gene. According to the genetic analysis, M. tuberculata belongs to the order Spongillida. We observed specimens of diverse appearance, but their spicule complement proved to be similar, and ITS sequences were identical. Thus, we conclude that they belong to the same species. The obtained results expand our knowledge about the dispersal ability of freshwater sponges.
(Agniya M. Sokolova, Dmitry M. Palatov, Valeria B. Itskovich.)
Databáze: MEDLINE
Externí odkaz: