Numerous shells of bivalves, which study attributed to 37 species, were collected from samples of ground taken with a Van Veen dredge sampler at the northeast coast of Sakhalin Island at depths of about 10–60 m in June–October 2003–2009. Tellina lutea, Mactromeris polynyma, Serripes groenlandicus, Macoma spp., Liocyma fluctuosum, and Siliqua alta occurred most often in the samples. The assessment of growth in 18 bivalve species revealed common patterns of age variations that were irrespective of their way of life, maximum body size, and maximum age. The greatest annual increment in shell length was observed in the first 4 years of life, and the asymptotic size of the mollusks was reached with a 10-fold decrease in the annual growth rate. The life span of the mollusks varied from 2 up to 41 years and sometimes significantly differed from that of the studied species in other areas of their range, clearly displaying the ecological conditionality of this parameter. Species with maximum ages of less than 10 years were the most numerous in the bivalve community of the region. The results of the research are discussed in relation to the nature of the environment at the northeast coast of Sakhalin Island.
Russian Journal of Marine Biology – Springer Journals
Published: Aug 29, 2010
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