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ISSN : 1225-3480
본 연구에서는 한국 남해안 진도에 서식하는 북방전복의 생식소 발달과 생식주기를 조직학적으로 기재하였다. 생식소는 조직학적으로 계절적인 변화를 보였다. 암컷의 비율은 57% (n = 154 / 271) 로 조사되었다. 생식소지수는 암, 수 모두 6월에 최고값 (3.3, 3.9) 을 보였으며, 12월에 최저값 (1.1, 1.1) 을 나타냈다. 비만도와 육중량비는 모두 5월에 최고값을 보였으며, 10월에 최저값을 나타냈다. 생식소지수, 비만도 및 육중량비의 변화는 생식소조직의 계절적 변화와 유사한 양상을 나타냈다. 생식주기는 비활성기 (11월-12월), 초기활성기 (1월-3월), 후기활성기 (3월-4월), 완숙기 5월-6월), 방출 및 퇴화기(7월-10월) 로 구분할 있었다. 2013년 진도에서 북방전복의 주산란기는 7월-8월이었다.
This study histologically describes the gonadal development and reproductive cycle of the abalone, Haliotis discus hannai inhabiting Jindo on the southern seashores of Korea. Gonads displayed histologically definitive seasonal changes. The female ratio (F/F + M) was 57% (n = 154/271). The gonad index (GI) of both males and females was the highest (3.3 and 3.9) in June and was the lowest (1.1 and 1.1) in December. The condition index (CI) and meat weight rate (MWR) were highest in May and lowest in October. The pattern of changes in the GI, CI and MWR were similar to the pattern of seasonal changes in gonadal tissues. The reproductive cycle was divided into an inactive stage (November-December), early active stage (January-March), late active stage (March-April), ripe stage (May-June) and spent and degenerative stage (July-October). The main spawning period of Haliotis discus hannai was July to August at Jindo in 2013.
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