Growth and shell morphology of three mytilidae (Bivalvia) species from the Sea of Japan |
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Authors: | E E Vekhova |
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Institution: | 1. Zhirmunsky Institute of Marine Biology, Far East Branch, Russian Academy of Sciences, Vladivostok, 690041, Russia
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Abstract: | The growth and shell morphology of bivalve mollusks Crenomytilus grayanus, Mytilus coruscus, and Modiolus modiolus from the Sea of Japan are examined. The changes in body proportions and shell form in the ontogenesis of C. grayanus, M. coruscus, and M. modiolus are different even in the cases when the mussels develop in similar environmental conditions. Rapid growth shapes a well-streamlined and flat form of shell; slow growth leads to the formation of a massive and convex form. The parameters of the Bertalanffy growth curve for each species are calculated. The differences are discussed from the standpoint of functional morphology and spatial distribution patterns of mytilids in the coastal areas of the sea. |
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