전자저널 > 전자저널 > Fisheries Biology of Bigfin Reef Squid, Sepioteuthis lessoniana in Jeju Island, Korea

Fisheries Biology of Bigfin Reef Squid, Sepioteuthis lessoniana in Jeju Island, Korea

Hyunjung Kang, Yeonghye Kim, Eunhui Lee, Dongwoo Lee and Daesoo Chang

Fisheries Resource Research Department, National Fisheries Research and Development Institute Busan 619-902, Korea

The Binfin reef squid, Sepioteuthis lessoniana is commercially important species in Korea. Korean fishing vessels have actively caught it. However, the reproductive Biology of this species has been poorly known. Therefore, the purpose of this study is to provide information on the reproductive biology of Sepioteuthis lessoniana in Jeju Island, Korea. The Binfin reef squid caught by set net, from June to November 2006. Monthly changes in maturity stages, gonad weight, mantle length at 50% group maturity and sex ratio were investigated. The mantle length of the Binfin reef squid was between 10.6 and 32.1 cm. Maturation and spawning occur all year around, with more intensity from July to September, with peak July. The spawning period was June. The mantle length at 50 % group maturity was estimated to be 18.01 cm. Sex ratio was 1 : 1.4 (male : female). The proportion of female was significantly higher than male (x2-test, p>0.01).

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