日本とパラオの海水魚から得られた 3 新種を含む Bivesicula 属の吸虫

概要

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Six species of the genus Bivesicula YAMAGUTI, 1934 (Digenea : Bivesiculidae) are reported from marine fishes of Japan and the Palau Islands. B. gymnothoracis sp. nov. found in the intestine of Gymnothorax kidako (Muraenidae) from Japan is different from the most closely allied B. ostichthydis SHEN, 1982 in having a broader body and smaller eggs. B. obovata sp. nov. found in the pyloric ceca of Sargocentron rubrum (Holocentridae) from Japan is different from the most closely allied B. hepsetiae MANTER, 1947 in having a larger and broader body and more anteriorly distributed vitellaria. B. palauensis sp. nov. found in the intestine of Variola louti (type host) and Epinephelus microdon (both Serranidae) from the Palau Islands is different from the most closely allied B. tarponis SOGANDARES-BERNAL et HUTTON, 1959 in having a larger pharynx, a shorter esophagus, a smaller testis, a much more spacious pars prostatica, a very short ejaculatory duct and larger eggs. Specimens found in the intestine of Brotula multibarbata (Ophidiidae) from Japan are provisionally assigned to B. ostichthydis. Specimens (Bivesicula spp. 1 and 2) found in the intestine of G. kidako and the pyloric ceca of E. fasciatus, respectively, both from Japan remain unidentified. Data are given on other members of the genus previously known from Japanese waters.
国立科学博物館の論文