수온이 졸복 Takifugu pardalis의 난발생에 미치는 영향

Effect of Water Temperature on the Embryonic Development of Panther Puffer Takifugu pardalis

  • 한경호 (국립수산과학원 남해수산연구소) ;
  • 조재권 (전남대학교 수산해양대학 양식생물학전공)
  • Han, Kyeong-Ho (South Sea Fisheries Reserch Institute, National Fisheries Research and Development Institute) ;
  • Cho, Jae-Kwon (Aquaculture program, College of Fisheries and Ocean Sciences, Chonnam National University)
  • 발행 : 2007.12.31

초록

졸복 Takifugu pardarlis의 어미로 부터 수정란을 받아 수온이 난 발생에 미치는 영향을 연구하였다. 수정에서 부화에 이르기까지의 평균 소요시간은 $13^{\circ}C-24^{\circ}C$ 범위에서 480-135시간이 소요되었으며, 일반적으로 수온이 높을수록 각 발생단계에 이르는 시간이 짧아지는 경향을 나타내었다. 부화율은 $15^{\circ}C$ 구간에서 가장 높은 부화율을 나타내었으며, 수온이 증가할수록 부화율은 점차 감소하는 경향을 보였다. 부화 직후 자어의 전장은 수온이 높을수록 부화자어 전장의 크기가 증가하였으나, 기형어의 발생율은 $13{\sim}18^{\circ}C$구간에서는 발생율이 낮았으나, $21^{\circ}C$ 구간부터는 수온이 증가할수록 기형어 발생율이 증가하였다.

We studied the effects of temperature on the egg development and larvae of Takifugu pardalis. The larvae hatched 135-480 hr after fertilization in $13^{\circ}C-24^{\circ}C$ and 32 ppt. The higher the temperature the earlier the larvae hatch within $13^{\circ}C-24^{\circ}C$. The maximum hatching rate was made in $15^{\circ}C$ and 32 ppt. The higher the temperature the larger the newly hatched larvae. The larvae hatched in $24^{\circ}C$ were ca. 3.35 mm in total length. Occurrence of the deformed larvae was lower in $13^{\circ}C-18^{\circ}C$ regime and higher over $21^{\circ}C$ regime.

키워드

참고문헌

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