book_cover_img The Korean Society of Marine Life Science Journal of Marine Life Science eISSN 2508-7134
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Year of Launching : 2016
Frequency : Twice a year (June 15, December 15)
Doi Prefix : 10.23005/ksmls.

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ISSN : 2508-7134(Online)
Journal of Marine Life Science Vol.7 No.1 pp.37-44
DOI : https://dx.doi.org/10.23005/ksmls.2022.7.1.37

Sexual Group Maturity and Main Spawning Period of Glyptocephalus stelleri (Teleostei: Pleuronectidae)
기름가자미 Glyptocephalus stelleri의 군성숙도와 주 산란기

So Ryung Shin1, Hyeon Jin Kim1, Han Young Oh1, Jung Sick Lee1, Hyejin Song2, Jae Won Kim3*
신소령1, 김현진1, 오한영1, 이정식1, 송혜진2, 김재원3*
1Department of Aqualife Medicine, Chonnam National University, Yeosu 59626, Korea
2Dokdo Fisheries Research Center, National Institute of Fisheries Science, Pohang 37709, Korea
3Department of Smart Aquaculture, Gangwon State University, Gangneung 24525, Korea

1전남대학교 수산생명의학과
2국립수산과학원 독도수산연구센터
3강원도립대학교 스마트해양양식학과
Corresponding Author Jae Won Kim Department of Smart Aquaculture, Gangwon State University, Gangneung 24525, Korea E-mail : kjw01@gw.ac.kr

Abstract

This study was performed to obtain information on the sex ratio, size at sexual group maturity, and main spawning period of Glyptocephalus stelleri. The sex ratio (female: male) was 1:0.54 (n=189:103, 64.7% female), and the frequency of females in the population tended to increase with total length. The oocyte development pattern was group synchronous development, in which oocyte groups at different stages were identified within the same ovary. The total length at 50% sexual group maturity was analyzed using a logistic regression model, and was determined to be 28.51 (female) and 30.49 cm (male). The gonadosomatic index (GSI) displayed the highest values in April (female) and March (male), and the main spawning period being in April to May. 연구는 기름가자미의 성비, 군성숙도 및 주 산란기에 관한 정보를 얻기 위해 수행하였다. 성비 (암:수)는 1:0.54 (n=189:103, 암컷 64.7%)였으며, 전장이 증가함에 따라 암컷의 비율이 높아지 는 경향을 보였다. 난모세포 발달패턴은 동일 난소 내에서 여러 단계의 난모세포군이 확인되 는 난군동기발달형이었다. 로지스틱 회귀모델에 의해 분석된 50% 성숙 전장은 암, 수 각각 28.51 cm과 30.49 cm였다. GSI는 암, 수 각각 4월과 3월에 가장 높았으며, 주 산란기는 4-5월 로 분석되었다.

초록

 

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