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Reproductive ecology of the glowbelly, Acropoma japonicum (Perciformes: Acropomatidae) in the coastal waters off Gori, Korea

고리 주변 해역에 출현하는 반딧불게르치 (Acropoma japonicum)의 생식생태

  • Baeck, Gun-Wook (Institute of Marine Industry, College of Marine Science, Gyeongsang National University) ;
  • Huh, Sun-Hoi (Department of Oceanography, Pukyong National University) ;
  • Park, Joo-Myun (Division of Marine Technology, Chonnam National University)
  • 백근욱 (경상대학교 해양산업연구소) ;
  • 허성회 (부경대학교 해양학과) ;
  • 박주면 (전남대학교 해양기술학부)
  • Received : 2012.01.18
  • Accepted : 2012.04.30
  • Published : 2012.05.31

Abstract

The reproductive ecology of the glowbelly, $Acropoma$ $japonicum$ was examined using 637 specimens collected monthly from January to December 2006 in the coastal waters off Gori, Korea. The specimens ranged in standard length (cm, SL) from 2.9 to 11.4cm for female, 2.7 to 10.5cm for male. The gonadosomatic index (GSI) of female was highest in September and decreased until December, and the spawning season lasted from August to November. The monthly sex was not different significantly ($x^2$-test, p>0.05). The size at 50% maturity was estimated at 6.0cm SL. $A.$ $japonicum$ was multiple spawner that spawn on more than one occasion in a single spawning season, and the maximum egg diameter was 0.75mm. Fecundity (F) ranged from 12,052 to 104,246 eggs, with the mean of 38,321 eggs. The relationships between fecundity and standard length (cm, SL), body weight (g, BW) were estimated as $F=86.278SL^{2.9652}$ ($R^2$=0.7970) and $F=3036BW^{1.0081}$ ($R^2$=0.7992), respectively.

Keywords

Glowbelly;Acropoma japonicum;Reproductive ecology;Coastal waters off Gori

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