Abstract
ITO, Syoichi (Ryotsu High School, Sado), Koji IKEHARA (Japan Sea Regional Fisheries Research Laboratory) and Yoshiharu HONMA (Sado Marine Bialogical Station, Niigata University). 1988. Caprellids (Crustacea : Amphipoda) attached to the floating seaweeds on the Sea of Japan. Benthos Research (Bull. Jap. Assoc. Benthology), 32 : 30-36.
Extensive survey of floating seaweeds (Sargassum spp.) has been carried out offshore area along the coast of the Sea of Japan from June 1981 to June 1986. Caprellidae was one of the most dominant taxa among the invertebrate fauna attached to the floating seaweeds, and was found in all floating seaweed samples collected from 84 sampling stations distributed from the end of western coast of Honshu to Sado Island, Niigata. Twelve species of caprellids were identified among the specimens collected. Caprella penantis and C. danilevskii were the dominant species both in numerical abundance and wide range of occurrence, and next was C. decipiens as the third rank. The occurrence of other species concentrated in the floating algae occurred in Toyama Bay and Sado Strait. This fact suggests that a part of the floating seaweeds found in offshore of Hokuriku District consists of those transported long distance by the Tsushima Current from the northern Kyushu, while a part of them derived from the seaweed zone of adjacent coastal area such as Toyama and Niigata region.
