소양호에 서식하는 쏘가리 Siniperca scherzeri의 성숙과 산란 특성

Maturity and Spawning of Korean Mandarin Fish, Siniperca scherzeri in Soyangho Lake

  • 신아리 (국립수산과학원 중앙내수면연구소) ;
  • 박희원 (국립수산과학원 중앙내수면연구소) ;
  • 이완옥 (국립수산과학원 중앙내수면연구소) ;
  • 송미영 (국립수산과학원 중앙내수면연구소)
  • Shin, Ari (Inland Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Park, Heewon (Inland Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Lee, Wan-Ok (Inland Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Song, Mi-Young (Inland Fisheries Research Institute, National Institute of Fisheries Science)
  • 투고 : 2018.05.28
  • 심사 : 2018.06.22
  • 발행 : 2018.06.30

초록

본 논문은 소양호에 서식하는 내수면어업의 주요 수산자원 중 하나인 쏘가리(Siniperca scherzeri)의 성숙과 산란에 관하여 연구하였다. 본 논문에 사용된 쏘가리는 2014년 4월부터 11월까지 정치망과 자망을 통해 채집하였고, 암컷이 204개체로 전장범위는 113~365 mm이었고, 수컷은 197개체로 전장 범위가 140~342 mm이었다. 산란기가 시작되는 5월의 수온은 $15^{\circ}C$를 나타냈으며, 점진적으로 높아져 7월에 $26^{\circ}C$를 나타내었다. 암컷의 생식소 숙도지수(GSI)는 5월에서 7월까지 각각 2.3%, 4.6%, 3.1%로 나타났고, 수컷의 경우 8.0%, 6.6%, 4.5%로 나타났다. 난소 조직은 5월에 많은 수의 샘플이 중숙으로 관찰되었으며 6월에는 대다수가 성숙, 7월에는 완숙 및 방란으로 관찰되었다. 정소 조직의 경우에도 마찬가지로 5월에는 대다수가 중숙, 6월에는 성숙, 7월에는 방중으로 관찰되었다. 월별 성숙도와 생식소 숙도지수 (GSI), 생식소의 조직관찰을 통한 분석결과, 소양호에 서식하는 쏘가리의 산란기는 5월에서 6월로 추정되었다. 또한 군성숙도를 분석한 결과, 암컷 쏘가리의 50% 성숙체장은 245.16 mm로 나타났다.

The study about maturity and spawning of Korean Mandarin fish, Siniperca scherzeri collected using the set net and gill net in Soyangho Lake from April to November 2014 was conducted. The number of individuals was 401 (female: 204, male: 197). The total length of females ranged from 113 mm to 365 mm and that of males was from 140 mm to 342 mm. The water temperature in May which is the start of spawning season indicated about $15^{\circ}C$ and gradually increased to July ($26^{\circ}C$). Gonadosomatic index (GSI) of females indicated 2.3%, 4.6% and 3.1%, respectively, in May to July. Males' value showed the similar pattern recording 8.0%, 6.6% and 4.5% in the same time. According to histological observations of gonadal tissue, the most of female in May had the gonadal tissue of maturing and mature stage. And the ovary of June was mostly in the stage of ripe and spawning and a number of individuals in July was recovery stage. In the case of male, a number of males in May showed in the stage of mature. The testis of June showed that mature sperm was releasing. And the testis of July was mostly in recovery stage. The total length at 50% group maturity was estimated 245.16 mm. As shown in the above, the main spawning period of S. scherzeri was May to June.

키워드

참고문헌

  1. Aida, K. 1991. Environmental regulation of reproductive rhythms in teleosts. Bull. Inst. Zool. Acad. Sinica. Monogr., 16: 173-187.
  2. Kim, I.S. 1997. Illustrated Encyclopedia of Fauna & Flora of Korea, Vol. 37, Freshwater Fishes. Ministry of Education, Seoul. 629pp. (in Korean)
  3. Kim, M.J. and C.B. Song. 2011. Origin of the Korean Mandarin Fish, Siniperca scherzeri, and its molecular phylogenetic relationships to other Siniperca fishes. Korean J. Ichthyol., 23: 95-105. (in Korean)
  4. Lee, J.Y., S.I. Jang and W.O. Lee. 1998. Studies on darly life history of the Korean Mandarin Fish, Siniperca scherzeri (Perciformes, Centropomidae). Korean J. Ichthyol., 10: 1-10. (in Korean)
  5. Lee, W.O. and J.Y. Lee. 1997. Studies on the Development of Aquaculture Technique in Siniperca scherzeri (Pisces, Centropomidae). National Fisheries Research and Development Agency, pp. 3-34. (in Korean)
  6. Lee, W.O., J.Y. Lee, S.J. Son and N.J. Choi. 1997. Early Life History and Reproductive Ecology of Mandarin Fish, Siniperca scherzeri (Pisces, Centropomidae) in Soyang Lake. Korean J. Ichthyol., 9: 99-107. (in Korean)
  7. Lee, W.O., J.M. Baek, J.H. Lee, K.W. Kim, C.H. Kim and S.W. Yoon. 2012. Sexual Maturation and Feeding Habit of Korean Mandarin Fish, Siniperca scherzeri (Perciformes, Centropomidae), in the Seomjin River and Imjin River, Korea. Kor. J. Env. Eco., 26: 57-66. (in Korean)
  8. Lee, Y.A., B.M. Lee, K.C. Choi, S.Y. Park and I.C. Bang. 2005. Early Gonadogenesis and Sex Differentiation of the Mandarin Fish, Siniperca scherzeri. J. of Aquaculture, 18: 76-80. (in Korean)
  9. Li, D., C. Yang, G. Xu and L. Zhang. 1998. Biology of Mandarin Fish (Siniperca chuatsi Basilesky) in Poyang Lake. Acta. Agricult. Jiangxi., 10: 14-22. (in Chinese with English abstract)
  10. Myoung, J.G., J.H. Mun, J.K. Kim, K.D. Park, C.B. Kang, Y.U. Kim and J.T. Park. 2001. Osteological Development of Larvae and Juveniles of Korean Mandarin Fish, Siniperca scherzeri (Perciformes, Centropomidae). Korean J. Ichthyol., 13: 129-135. (in Korean)
  11. NIFS. 2007. Report on the regulation for catch prohibition of fisheries. pp. 207-209. (in Korean)
  12. NIFS. 2015. Korea Inland Fisheries Resources and Environmental Survey Manual. NEXIGN, 34pp. (in Korean)
  13. Shimizu, A. and I. Hanyu. 1993. Factors involved in the development of and decline in photoperiodism as it relates to the gonadal activity of a spring-spawning bitterling, Acheilognathus tabira. JEZ-A Ecological Genetics and Physiology, 265: 134-143.
  14. Song, M.Y., S.Y. Kim, Y.K. Hong and W.O. Kim. 2012. Studies on the feeding habits of Mandarin Fish, Siniperca scherzeri, in the Soyang Lake, Korea. Korean J. Ichthyol., 29: 124-129. (in Korean)
  15. Wang, G.J., J. Xie, S.X. Pang and D.G. Yu. 2006. Reproductive biology of Siniperca kneri in Pearl River water system. Chin. J. Fish., 30: 50-55. (in Chinese with English abstract)
  16. Wu, L.X., Z.Q. Jiang and K.J. Qin. 1997. Feeding habit and fishery utilization of Siniperca scherzeri in Biliuhe reservoir. J. Fish. Sci. Chin., 44: 25-29. (in Chinese with English abstract)
  17. Zeng, K.W., Q.Y. Wang, Y.A. Gao, Y.L. Xia, H. Wang and G.H. Zhang. 2005. Study on biological and reproductive biology of Siniperca scherzeri. Inland Fish, 2: 21-23. (in Chinese with English abstract)
  18. Zhang, C.I. 1991. Fisheries Resources Ecology. Woosung Publ. Co., pp. 46-51. (in Korean)