Occurrence of Caligus lalandei Barnard, 1948 (Copepoda, Siphonostomatoida) on Amberjacks (Seriola spp.) in the Western North Pacific(Animal Diversity and Evolution)

概要

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Caligus lalandei Barnard, 1948 (Caligidae, Siphonostomatoida) is redescribed based on the materials occurring in the waters of East Asia. This parasitic copepod is so far known only from the amberjacks (Seriola spp.) outside of the western North Pacific. However, in 1989 it was discovered on "mojako" (juveniles) of Seriola quinqueradiata collected off Azuma-cho and Yamakawa-cho in Kogoshima Prefecture, Japan. In 1998 it appeared on Seriola lalandi caught in a set net installed off the coast near Kangreung, Korea and in the following year it was found parasitic on S. lalandi cultured in Tsukumi of Oita Prefecture, Japan. The possible origin of the occurrence of C. lalandei in Japan and Korea is discussed ; but, due to several unknown factors, it is inconclusive at this point of time whether the occurrence of C. lalandei in Japan and Korea is due to the "natural" or "artificial" process. However, the parasite has well established in its new habitat-the northern region of the western North Pacific.
社団法人日本動物学会の論文
2001-04-10