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꼬막 (Tegiilarca granosa) (Linngeus)의 산란유발 및 난 발생과 초기 유생 사육
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  • 꼬막 (Tegiilarca granosa) (Linngeus)의 산란유발 및 난 발생과 초기 유생 사육
저자명
문태석,정민민,신윤경,양문호,고창순,장영진,MOON. Tae-seok,JUNG. Min-min,SHIN. Yun-kyung,YANG. Mun-ho,KO. Chang-sun,CHANG. Young-jin
간행물명
한국수산학회지
권/호정보
2004년|37권 6호|pp.485-491 (7 pages)
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한국수산과학회
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

Spawning induction, egg development and larval growth of ark shell (Tegillarca granosa) (L.) were investigated. The most effective method of spawning induction was steady temperature increasing from$4^{circ}C;to;28^{circ}C$ with irradiation of sea water by UV after T. granosa was exposed to air at $4^{circ}C$ Optimum condition for larval roaring was under the 32.4 psu and two temperature $regimes:;28{pm}1^{circ}C;and ;25{pm}1^{circ}C$. Fertilized eggs was demersal isolated eggs, and egg diameter was $60{mu}$. D-shaped larvae appear about 20 hr after hatching with $94.1{mu}$ in shell length and $86.7{mu}$ in shell height. Ten days were required from hatching to umbo larva stage, of a mean shell length $125.2{mu}$. On 25th day, the larva grew to $450{mu}$ in shell length and began to settle on the bottom. Effect of temperature between $25^{circ}C$ (control group) and $28^{circ}C$ on larval growth was not different. Survival rate of larvae settled on the bottom was about $19{\%}$ in both temperatures conditions $(25^{circ}C;and;28^{circ}C)$.