Korean Journal of Ichthyology (한국어류학회지)

The Ichthyological Society of Korea (한국어류학회)
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Reproductive Ecology of the Cardinalfish Apogon lineatus (Perciformes: Apogonidae) in the Coastal Waters of Gori, Korea

고리 주변 해역에 출현하는 열동가리돔 (Apogon lineatus)의 생식생태

  • Baeck, Gun-Wook (Department of Marine Biology & Aquaculture, College of Marine Science, Gyeongsang National University) ;
  • Park, Chan-Il (Department of Marine Biology & Aquaculture, College of Marine Science, Gyeongsang National University) ;
  • Huh, Sung-Hoi (Department of Oceanography, Pukyong National University) ;
  • Park, Joo-Myun (Division of Marine Technology, Chonnam National University)
  • 백근욱 (경상대학교 해양생명과학과) ;
  • 박찬일 (경상대학교 해양생명과학과) ;
  • 허성회 (부경대학교 해양학과) ;
  • 박주면 (전남대학교 해양기술학부)
  • Received : 2010.07.28
  • Accepted : 2010.09.24
  • Published : 2010.09.30
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Abstract

The reproductive ecology of the cardinalfish Apogon lineatus was examined using 4,300 specimens collected monthly from January to December 2006 in the coastal waters of Gori, Korea. Specimens ranged in standard length (SL) from 2.1 to 8.6 cm. They were distributed more in surface areas during summer and autumn and more on bottom areas during spring and winter. The gonadosomatic index (GSI) of females was highest in September and decreased until December, with the spawning season lasting from August to October. The monthly ratio of female to male did not significantly differ (${\chi}^2$-test, p>0.05). The size of 50% maturity was estimated at 5.43 cm SL and all females more than 7.0 cm SL were sexually mature. A. lineatus is a multiple spawner, spawning on more than one occasion in a single spawning season. The maximum egg diameter was 0.65 mm. Fecundity (F) ranged from 8,555 to 20,084 eggs, with a mean of 15,038 eggs. The relationship between fecundity and standard length was estimated as F=$334,851\;SL^{1.9876}$ ($R^2$=0.53). The relationship between fecundity and body weight(BW) was estimated as F=7,167.6 Ln (BW)-2,198.1 ($R^2$=0.33).

한국 동해 남부 고리 주변해역에서 2006년 1월부터 12월까지 매월 저인망과 삼각망에서 채집된 열동가리돔 4,300개체의 생식생태를 조사하였다. 열동가리돔의 체장범위는 2.1~8.6 cm 였다. 열동가리돔은 여름과 가을에는 표층에 더 많이 분포하였으며, 봄과 겨울에는 저층에 더 많이 분포하였다. 열동가리돔 암컷의 생식소중량지수는 9월에 가장 높았으며, 그 이후 12월까지 감소하였다. 따라서 산란시기는 8~10월로 추정되었다. 열동가리돔의 암 수간 성비에서는 유의한 차이가 나타나지 않았다 (${\chi}^2$-test, p>0.05). 열동가리돔 암컷의 50% 군성숙체장은 5.43 cm로 추정되었고, 모든 암컷은 7.0 cm 이상의 성숙하였다. 열동가리돔은 연속산란종으로 산란기 동안 2회 이상 산란을 하였으며, 최대난경은 0.65 mm를 보였다. 포란수는 8,555~20,084개의 범위였으며, 평균 15,038개 였다. 체장과 포란수의 관계식은 F=$334,851\;SL^{1.9876}$ ($R^2$=0.53), 체중과 포란수의 관계식은 F=7,167.6 Ln (BW)-2,198.1 ($R^2$=0.33)로 추정되었다.

Keywords

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