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Maturation and Spawning of Shuttles Hoppfish Periophthalmus modestus in the Mud Flat of Suncheon Bay, Korea

한국 순천만 갯벌지역 말뚝망둥어 (Periophthelmus modestus)의 성숙과 산란

  • Kim, Jae-Won (Department of Marine Bio-resources, Kangwon Provincial University) ;
  • Yoon, Yang-Ho (Fauclty of Marine Technology, Chonnam National University) ;
  • Shin, Hyun-Chool (Fauclty of Marine Technology, Chonnam National University) ;
  • Lim, Kyeong-Hun (Fauclty of Marine Technology, Chonnam National University) ;
  • Takita, Toru (Faculty of Fisheries, Nagasaki University) ;
  • Park, Se-Chang (College of Veterinary Medicine, Seoul National University) ;
  • Baeck, Gun-Wook (Korea Inter-University Institute of Ocean Science, Pukyong National University)
  • 김재원 (강릉도립대학교 자원개발학과) ;
  • 윤양호 (전남대학교 해양기술학부) ;
  • 신현출 (전남대학교 해양기술학부) ;
  • 임경훈 (전남대학교 해양기술학부) ;
  • ;
  • 박세창 (서울대학교 수의학과) ;
  • 백근욱 (부경대학교 해양과학공동연구소)
  • Published : 2007.04.30

Abstract

The maturation and spawning of Shuttles hoppfish Periophthalmus modestus were studied from April to October, 2005 in the mud flat of Suncheon Bay, Korea. The specimens ranged in body length (BL) from 1.5 to 8.4 cm. The gonadosomatic index (GSI) of females was highest in May and decreased until September. The hepatosomatic index (HSI) and fatness index of females were high in April and then decreased to a nadir in July. The data indicate that the spawning season was from April to September. There was no significant difference in the ratio of females to males $(X^2-test,\;p>0.01)$. Over 50% of the females over 5 cm in BL were sexually mature. Fecundity ranged from 1,664 to 13,428. The relationship between fecundity (F) and body length (BL) of the fish was expressed as $F=0.026BL^{2.8638}\;(R^2=0.79)$. The first spawning length was 4.5 cm BL.

Keywords

References

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