The composition and seasonal dynamics of meroplankton in Amurskii Bay (Sea of Japan) were studied for the first time. The total survey period exceeded two years. The larvae of demersal invertebrates—members of 69 taxa of various ranks—were found, among which, Bivalvia and Polychaeta were the most diverse. In early spring, the larvae of the polychaete Harmothoe imbricata (family Polynoidae) predominated; in late spring and early summer, Littorinidae (Gastropoda) larvae prevailed; in summer, bivalve larvae were most abundant; and in autumn, the meroplankton was dominated by larvae of the cirripede Balanus rostratus (Balanidae) and the polychaetes Polydora aff. ciliata and Dipolydora sp. (D.aff. concharum?) (Spionidae). In the survey period, the proportion of meroplankton in the average annual numbers of zooplankton varied between 22 and 31% reaching 82% during periods of the maximum abundance of the dominant species.
Russian Journal of Marine Biology – Springer Journals
Published: Oct 18, 2004
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