넙치(Paralichthys olivaceus) 암컷과 강도다리(Platichthys stellatus) 수컷 잡종에서 수정란의 수온별 발생속도 및 자어 성장
Developmental Speed of Hybrid Fertilized Egg Between Olive Flounder Paralichthys olivaceus Female and Starry Flounder Platichthys stellatus Male at Different Water Temperatures and Larval Growth
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초록
To investigate the characteristics of hybrid eggs and larva produced by olive flounder Paralichthys olivaceus femalesand starry flounder Platichthys stellatus males, we examined the developmental speed of hybrid eggs at differentwater temperatures. The developmental speed of hybrid eggs tended to increase with increasing water temperature. Specifically, the hatching times were 91 hrs, 62 hrs and 43 hrs at 10℃, 15℃and 20℃, respectively. The mean biologicalminimum temperature of the hybrid was 1.3℃, which is in between that of the olive flounder and the starryflounder. In high water temperatureseasons, slower growth was observed in hybrids of the starry flounder which is acoldwater fish.
Abstract
To investigate the characteristics of hybrid eggs and larva produced by olive flounder Paralichthys olivaceus femalesand starry flounder Platichthys stellatus males, we examined the developmental speed of hybrid eggs at differentwater temperatures. The developmental speed of hybrid eggs tended to increase with increasing water temperature. Specifically, the hatching times were 91 hrs, 62 hrs and 43 hrs at 10℃, 15℃and 20℃, respectively. The mean biologicalminimum temperature of the hybrid was 1.3℃, which is in between that of the olive flounder and the starryflounder. In high water temperatureseasons, slower growth was observed in hybrids of the starry flounder which is acoldwater fish.
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