Journal of Aquaculture (한국양식학회지)

The Korean Society of Fisheries and Aquatic Science (한국양식학회)
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Morphology of Snow Crab, Chionoecetes opilio Larvae and Larval Growth at Different Water Temperatures

대게, Chionoecetes opilio 유생의 형태 및 수온별 성장

  • 임영수 (국립수산진흥원 울진수산종묘시험장) ;
  • 이종관 (국립수산진흥원 울진수산종묘시험장) ;
  • 이종하 (국립수산진흥원 울진수산종묘시험장) ;
  • 이복규 (동의대학교 생물학과) ;
  • 허성범 (부경대학교 양식학과)
  • Published : 2001.03.01
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Abstract

At 5$^{\circ}C$ incubation of the brooded eggs of the snow crab, Chionoecetes opilio lasted for 297 days; freshly hatched prezoea molted to become the first zoea in one hour. Length (from the tip of the rostral spines to the tip of the dorsal spines) of the first and second zoeae measured 4.8 and 6.4mm, respectively. Experimental rearing of the larvae at 5, 10, 15 and 2$0^{\circ}C$ indicated that the upper limit of thermal tolerance is 15$^{\circ}C$, as all the reared larvae succumbed at 2$0^{\circ}C$. Intermolt period from the first the first zoea to the second was 57, 32 and 23 days at 5, 10 and 15$^{\circ}C$, respectively and that of the second zoea was 52, 29 and 90 days, respectively. Largest number of larvae survived at 1$0^{\circ}C$.

Keywords

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