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ISSN : 1225-3480

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31권 1호

한국산 둥근전복, Haliotis discus discus의 생식주기

Reproductive Cycle of the Abalone, Haliotis discus discus Collected from Jeju Island of Korea

김재원 (강원도립대학 해양생명과학과)
이병욱 (부경대학교 해양생물학과)
강주찬 (부경대학교 수산생명의학과)
민은영 (부경대학교 수산과학연구소)
원승환 (제주특별자치도 해양수산연구원)
임한규 (국립목포대학교 해양수산자원학과)
강승완 (경상남도 수산자원연구소)
전미애 (전남대학교 수산생명의학과)
이정식 (전남대학교 수산생명의학과)
한국패류학회지 / The Korean Journal of Malacology, (P)1225-3480;
2015, v.31 no.1, pp.21-26
https://doi.org/10.9710/kjm.2015.31.1.21
김재원, 이병욱, 강주찬, 민은영, 원승환, 임한규, 강승완, 전미애, & 이정식. (2015). 한국산 둥근전복, Haliotis discus discus의 생식주기. , 31(1), 21-26, https://doi.org/10.9710/kjm.2015.31.1.21

초록

본 연구에서는 한국 제주도에 서식하는 둥근전복의 생식소 발달과 생식주기를 조직학적으로 기재하였다. 생식소는 조직학적으로 계절적인 변화를 보였다. 암컷의 비율은 59% (n = 182/309) 로 조사되었다. 생식소지수는 암, 수 모두 9월에 최고값 (3.2, 3.3) 을 보였으며, 1월과 2월에 최저값 (1.7, 1.4) 을 보여주었다. 난경 조성 변화는 3월의 초기성장기부터 점차 증가하기 시작하여 완숙기인 8월에 $180{\mu}m$ 전후의 난경을 나타냈다. 비만도는 암,수 모두 7월에 최고값 (0.0748, 0.0760) 을 보였으며, 5월에 최저값 (0.0268, 0.0278) 을 나타냈다. 생식소지수, 난경 및 비만도는 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 수 있다. 2014년 제주도에서 둥근전복의 주산란기는 8월-10월 이었다.

keywords
Haliotis discus discus, reproductive cycle, main spawning period

Abstract

This study histologically describes the gonadal development and reproductive cycle of the abalone, Haliotis discus discus inhabiting Jeju Island of Korea. Gonads displayed histologically definitive seasonal changes. The gonad index (GI) of both females and males was the highest (3.2 and 3.3) in September and was the lowest (1.7 and 1.4) in January and February. Egg diameter increase from early stage in March and reach about $180{\mu}m$ to ripe stage in August. The condition index (CI) was highest in July and lowest in May. The pattern of changes in the GI, egg diameter and CI were similar to the pattern of seasonal changes in gonadal tissues. The female ratio (F/F + M) was 59% (n = 182:127). The reproductive cycle was divided into an inactive stage (January-February), early active stage (March-April), late active stage (May-July), ripe stage (August-October) and spent and degenerative stage (November-January). The main spawning period of H. discus discus was August to October at Jeju Island in 2014.

keywords
Haliotis discus discus, reproductive cycle, main spawning period

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