The Effect of Water Temperature and Salinity on Settlement of Pacific Oyster, Crassostrea gigas Pediveliger Larvae

Jeon, Chang-Young; 전창영; Hur, Young-Baek; 허영백; Cho, Kee-Chae; 조기채

doi:10.9710/kjm.2012.28.1.021

ISSN : 1225-3480

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28권 1호

굴 Crassostrea gigas 부착기 유생의 부착에 미치는 수온 및 염분의 영향

The Effect of Water Temperature and Salinity on Settlement of Pacific Oyster, Crassostrea gigas Pediveliger Larvae

전창영 (국립수산과학원 남동해수산연구소)
허영백 (국립수산과학원 남동해수산연구소)
조기채 (국립수산과학원 남동해수산연구소)

한국패류학회지 / The Korean Journal of Malacology, (P)1225-3480;

2012, v.28 no.1, pp.21-28

https://doi.org/10.9710/kjm.2012.28.1.021

전창영, 허영백, & 조기채. (2012). 굴 Crassostrea gigas 부착기 유생의 부착에 미치는 수온 및 염분의 영향, 28(1), 21-28, https://doi.org/10.9710/kjm.2012.28.1.021

복사

초록

채묘시험은 4구간의 수온구 20.0, 23.0, 26.0, $29.0^{\circ}C$에 염분을 20.0, 30.0, 40.0으로 조절하여 온도와 염분의 혼합구에 대한 참굴 부착기 유생의 채묘시험을 실시한 결과, 수온 $29.0^{\circ}C$에서 염분 20.0과 30.0으로 조절된 채묘구에서 평균 $43.1{\pm}0.19%$와 $42.1{\pm}0.1%$로 유의적으로 가장 높은 채묘율을 보였고, 수온 $23.0^{\circ}C$염분 40.0에서 $34.9{\pm}0.6%$ 가장 낮은 부착률을 보였다 (P < 0.05). 부착밀도는 수온 $29.0^{\circ}C$에서 유의적으로 높았고, 염분 40.0의 고염분에서 유의적으로 낮았다(P < 0.05). 그러나 수온과 염분의 혼합효과는 유의적인 차이가 없었다 (P > 0.05). 수온에 따른 염분별 채묘구의 부착 빈도를 조사한 결과 가장 많은 부착빈도는 1.2-2.3 마리/$cm^2$을 보였고, 평균 부착밀도는 1.9-2.4마리/$cm^2$였다. 전체적으로 채묘율과 평균 부착밀도 그리고 부착빈도를 감안하면 본 실험 결과 효과적인 채묘관리를 위한 수온과 염분조건은 수온 $29.0^{\circ}C$, 염분 20.0-30.0으로 조절하는 것이 좋을 것으로 판단된다.

keywords: settlement rate, settlement density, frequency, larvae, Crassostera gigas, oyster

Abstract

The combined effects of water temperature and salinity on the settlement rate and density (spats/$cm^2$) of Crassostrea gigas pediveliger larvae were studied under the hatchery conditions. Four water temperatures (20.0, 23.0, 26.0 and $29.0^{\circ}C$) were tested at three salinities (20.0, 30.0 and 40.0). The optimum water temperature by salinity conditions were $29.0^{\circ}C$ and 20.0, 30.0 which significantly (P < 0.05) the highest mean (${\pm}S.D$) larval settlement rate of $43.1{\pm}0.1%$, $42.1{\pm}0.1%$, respectively. But the combination of water temperatures and salinities for settlement density was not effected, but each factor as water temperature ($29.0^{\circ}C$), salinity (40.0) was shown significantly high and low settlement density, respectively (P < 0.05). The statistics result of settlement density frequency was appeared: mode ($1.2-2.3spats/cm^2$), Mean ($1.9-2.4spats/cm^2$), Range ($3.0-5.8spats/cm^2$) and the lowest variance was obtained 0.4 at water temperature $20.0^{\circ}C$ by salinity 30.0, but $29.0^{\circ}C$ by 20.0 was the highest (1.1). The best condition at this results for the larvae setting under the artificial seed collection of C. gigas was $29.0^{\circ}C$ and 20.0-30.0.

keywords: settlement rate, settlement density, frequency, larvae, Crassostera gigas, oyster

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논문 상세

28권 1호

굴 Crassostrea gigas 부착기 유생의 부착에 미치는 수온 및 염분의 영향

The Effect of Water Temperature and Salinity on Settlement of Pacific Oyster, Crassostrea gigas Pediveliger Larvae

초록

Abstract

참고문헌