The Morphology of the Pelagic Larvae and Reproduction Peculiarities of Glycymeris yessoensis G. B. Sowerby Ⅲ,1889 (Bivalvia: Glycymeridae) from the Vostok Bay (Peter the Great Bay, Sea of Japan)

摘要

This paper describes the pelagic larvae of the bittersweet clam Glycymeris yessoensis G. B. Sowerby Ⅲ, 1889 (Bivalvia: Glycymeridae) from the Vostok Bay (Peter the Great Bay, Sea of Japan). Distinctive features of the morphology of the larval shell, including structure of the hinge system, as well as size parameters of the larval shell and their ratio, are presented. The period of occurrence of Glycymeris yessoensis larvae in plankton of the Vostok Bay is indicated.