Seasonal distribution pattern of adult sea cucumber Apostichopus japonicus (Stichopodidae) in Yoshimi Bay, western Yamaguchi Prefecture, Japan
2009
Yamana, Y.(Hokkaido Univ., Hakodate (Japan)) | Hamano, T. | Goshima, S.
To examine the distribution pattern of adult Apostichopus japonicus, approximately monthly surveys were conducted during a 2-year period in the subtidal zone of a harbor area in Yoshimi Bay, western Yamaguchi Prefecture. Results showed a clear seasonal change in distribution pattern: many animals were distributed on the seabed and the lower part of a jetty during winter to spring, whereas most animals occurred on the upper part of a jetty during summer to autumn, namely, the aestivation season. Such change is considered to be due to the migration of animals within the present study site.
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