著者

佐々木 俊一

出版者

JAPANESE ASSOCIATION OF BENTHOLOGY

雑誌

日本ベントス研究会連絡誌 (ISSN:1883888X)

巻号頁・発行日

no.23, pp.27-35, 1982

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Egg-spawning and browsing behavour of an archiannelid, Saccocirrus uchidai, were studied at a mediolittoral habitat in Oshoro, Hokkaido, north Japan. During the breeding season, May to July, in 1980 and 1981, it was occasionally observed that a number of worms came out from the interstices among coarse Shelly sands, then they spawned eggs or fed over the sediment. Timing, position and abundance for the occurrence of these behavioral phenomena displayed over the sediment were studied together with their under-sediment movement (aggregation and migration). Besides the above, the motions of egg-spawning worms were closely observed in the laboratory condition.