Korean Journal of Ichthyology (한국어류학회지)
- Volume 12 Issue 1
- /
- Pages.71-84
- /
- 2000
- /
- 1225-8598(pISSN)
- /
- 2288-3371(eISSN)
Annual Reproductive cycle of the File Fish, Thamnaconus modestus, on the Southern Coast of Cheju Island
제주 남부 연안 말쥐치, Thamnaconus modestus의 생식년주기
-
Lee, Seung-Jong
(Department of oceanography, Cheju National University) ;
- Go, You-Bong (Department of oceanography, Cheju National University) ;
-
Lee, Young-Don
(Marine Research Institute, Cheju National University) ;
-
Jung, Ji-Hyun
(Department of Biology, Dong-Eui University) ;
-
Han, Chang-Hee
(Department of Biology, Dong-Eui University)
- Received : 2000.01.02
- Accepted : 2000.03.05
- Published : 2000.03.30
Abstract
Annual reproductive cycle of the file fish, Thamnaconus modestus (Gunther), was histologically investigated. Samples were collected monthly in the coastal waters of Chungmun, south of Cheju Island, Korea from July 1997 to June 1999. In males and females of T. modestus GSI values reached the maximum in June and May, respectively. Reproductive cycle could be divided into the following successive stages: in females, growing stage (March to April), mature stage (April to May), spawning stage (May to June), degenerative and resting stage (July to February), and in males, growing stage (January to March), mature stage (April to May), spent stage (May to June), degenerative and resting stage (July to December), respectively. To clarify the spawning cycle of female in T. modestus, some were examined, that is, the weekly changes of GSI, detail developmental stages in the ovary and the weekly changes of sex steroid hormones (
1997년 7월부터 1999년 6월까지 2년간 제주도 남부해역인 중문 하예동 연안에서 매월 채집한 말쥐치, Thamnaconus modestus의 생식주기를 조직학적인 방법으로 연구하였다. 암 수컷의 GSI 변화에 있어서 암컷은 5월, 수컷은 6월에 년 중 최고값을 보였다. 생식주기는 암컷인 경우 성장기 3~4월, 성숙기 4~5월, 산란기 5~6월, 퇴화 및 휴지기 7~2월로 구분되었고, 수컷인 경우 성장기 1~3월, 성숙기 4~5월, 방정기 5~6월, 퇴화 벚 휴지기 7~12월로 구분할 수 있었다. 산란기간 동안 말쥐치 암컷을 대상으로 이들의 산란주기 및 산란횟수를 알아보기 위해 생식소 발달상을 조직학적인 방법으로 관찰하고 성 steroid 호르몬인 estradiol-
Keywords
- Thamnaconus modestus;
- reproductive cycle;
- spawning cycle;
- sex steroid hormone;
- asynchronous;
- multiple spawner