수산해양기술연구 (Journal of the Korean Society of Fisheries and Ocean Technology)

  • 제49권4호
  • /
  • Pages.449-458
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  • 2013
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  • 2671-9940(pISSN)
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  • 2671-9924(eISSN)
한국수산해양기술학회 (The Korean Society of Fisheries and Ocean Technology)
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한국 진해만 해역에 분포하는 개조개, Saxidomus purpuratus의 재생산 연구 : 산란 및 군성숙각장

Reproduction study of purplish Washington clam, Saxidomus purpuratus in Jinhae bay, Korea : Spawning and shell length at 50% sexual maturity

  • 이선길 (국립수산과학원 남서해수산연구소 자원환경과) ;
  • 장대수 (국립수산과학원 남서해수산연구소 자원환경과) ;
  • 김종빈 (국립수산과학원 남서해수산연구소 자원환경과) ;
  • 박미애 (국립수산과학원 남서해수산연구소 자원환경과)
  • Lee, Sun Kil (Fisheries Resources and Environment Division, Southwest Sea Fisheries Research Institute, NFRDI) ;
  • Chang, Dae Soo (Fisheries Resources and Environment Division, Southwest Sea Fisheries Research Institute, NFRDI) ;
  • Kim, Jong Bin (Fisheries Resources and Environment Division, Southwest Sea Fisheries Research Institute, NFRDI) ;
  • Park, Mi Ae (Fisheries Resources and Environment Division, Southwest Sea Fisheries Research Institute, NFRDI)
  • 투고 : 2013.10.21
  • 심사 : 2013.11.15
  • 발행 : 2013.11.30
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초록

This study investigated purplish Washington clam, Saxidomus purpuratus on its gonadal development, reproductive cycle and shell length (age) at 50% female group maturity from January to December 2011 in Jinhae Bay, Korea. This species is dioecious. The gonad index (GI) began to increase in January, reached the maximum value in May and to decrease in June, reached the minimum value in September then to increase slowly in October again. The reproductive cycle of the clams can be divided into five successive stages: the early active stage (Ea, from February to March), the late active stage (La, from January to March and October to December), the ripe stage (R, from January to May), the spawning stage (S, from June to December) and the degenerative and inactive stage (Ia, from January to February and November to December). The spawning periods were from June to December and the main spawning periods were from July to October. The shell length at 50% female group maturity (SL50) was estimated to be 63.6 mm, which can be converted as sexual maturity age of 2.2 year.

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참고문헌

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