. Biology of the seas of the Marine biology -- Soviet Union; Hydrology -- Soviet Union. â â %OCCUR«ENCE MEAN BIOMASS $8 \'9 .. 03 Ðг~3>* 400 300 ZOO 100 u ats wi zj& i о 10 20 30 40 50 60 70 80â¢â¢ "> Ð IT 53 Ш STATIONS WITH LIVE MYTIIASTW | | STATIONS WITH OEAD MYTILASTE* DEAD BIVALVES 49 £T 36. 18 18 21 1 'â 0-10 10-20 ZMO 3040 iuTo 5040 60To 70-80 Fig. 273. Mytilaster lineatus biomass (g/m2). / In Central and Southern Caspian according to the years; II Distribution with depth; A Occurrence (% stations) and mean biomass (g/m2); Ð Ratio between the living and the
. Biology of the seas of the Marine biology -- Soviet Union; Hydrology -- Soviet Union. â â %OCCUR«ENCE MEAN BIOMASS $8 \'9 .. 03 Ðг~3>* 400 300 ZOO 100 u ats wi zj& i о 10 20 30 40 50 60 70 80â¢â¢ "> Ð IT 53 Ш STATIONS WITH LIVE MYTIIASTW | | STATIONS WITH OEAD MYTILASTE* DEAD BIVALVES 49 £T 36. 18 18 21 1 'â 0-10 10-20 ZMO 3040 iuTo 5040 60To 70-80 Fig. 273. Mytilaster lineatus biomass (g/m2). / In Central and Southern Caspian according to the years; II Distribution with depth; A Occurrence (% stations) and mean biomass (g/m2); Ð Ratio between the living and the dead Mytilaster (Brotzkaya and Netzengevitch). Caspian Sea; it has penetrated into the northern part and in particular into Mertvyi Kultuk. M. saliens is adapted mainly to the western shore, where it lives with M. auratus. On the Turkmen coast M. saliens is more numerous than M. auratus. Finally, in 1939 and 1940, Nereis and Syndesmya ovata were brought from the Sea of Azov into the Caspian Sea for acclimatization in order to increase food resources for commercial fish.* Sixty-one thousand specimens in all of Nereis and 18,000 specimens of Syndesmya ovata were put overboard in different places of the Caspian Sea (L. A. Zenkevitch, Ya. Birstein and A. Kar- pevitch, 1945). In the autumn of 1944 N. Spassky (1945) recorded for the first time * In the course of the transplantation of Nereis into the Caspian Sea there was a theory that the transplanted species was Nereis succinea. Some time later this belief altered and doubts arose. The first one to express doubt was Dr. Joel W. Hedgpeth (1957), who in his 'Treatise' published some critical notes referring to my paper on the Caspian Sea. Presently material on the Nereis from the Caspian Sea was forwarded to the prominent specialist working with the Polychaeta, Olga Hartman. She classified this species as Nereis diversicolor (1960). The careful examination of Nereis coming from the Caspian Sea (V. Chlebovitsch, 19
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