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- Title
The problem of invaders in the Caspian Sea in the context of the findings of new zoo- and phytoplankton species from the Black Sea.
- Authors
Shiganova, T.; Musaeva, E.; Pautova, L.; Bulgakova, Yu.
- Abstract
In April 2004, an expedition to the Caspian Sea discovered the species in the Middle Caspian not previously described in this sea. These species preliminary identified asOithona similisClaus 1963,Sagitta setosaMuller 1847, andCalanus euxinus(Hulsemann) are the main representatives of edible plankton of the Black Sea; most likely they were introduced into the Caspian Sea with ballast waters of ships passing through the Volga-Don Canal. At present, it is difficult to say if these species will be established in the Caspian Sea; if so, they will clearly become a valuable food resource for planktophagous fish in the Caspian Sea. In addition, we discovered two diatom species typical for the Black Sea phytoplankton,Pseudo-nitzschia seriata(Cleve) H. Peragallo and M. Peragallo andCerataulina pelagica(Cleve) Hendey which invaded the Caspian Sea in recent years.Pseudo-nitzschia seriatasynthesizes a toxin (domoic acid) and can become harmful for the basin in the case of mass bloom. We discuss the problem of spontaneous invasion of alien species from the Black Sea and their effect on the Caspian ecosystem in the context of these findings.
- Subjects
CASPIAN Sea; BLACK Sea; ZOOPLANKTON; PHYTOPLANKTON; OITHONA; SAGITTA; CALANUS; NITZSCHIA
- Publication
Biology Bulletin, 2005, Vol 32, Issue 1, p65
- ISSN
1062-3590
- Publication type
Article
- DOI
10.1007/s10525-005-0011-8