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민들조개(Gomphina melanaegis) 생식주기에 관한 조직･생화학적 연구

Histological and Biochemical Analyses on Reproductive Cycle of Gomphina melanaegis (Bivalvia; Veneridae)

이주|김수경|조규태|공용근|김영대|이종하|박민우|김재원
한국수산과학회 (The Korean Society of Fisheries and Aquatic Science)|2009.02|한국수산과학회지 (Korean Journal of Fisheries and Aquatic Sciences)|제42권 제1호|pp. 41-47

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참고문헌

주제분류수산학

초록

Abstract

The seasonal reproductive cycle of Gomphina melanaegis collected in the coastal area of Jumunjin, between April 2006 and March 2007, was analyzed. Maturation cycle parameters such as the gonad index (GI), ovarian egg diameter, frequency of developmental stages, protein content, and RNA/DNA variation in the gonads were analyzed monthly for the 40 samples. According to the indices from histological sections, the frequency of gonad developmental stages, and the oocyte diameter, this clam has a long-term partial spawning pattern from March to October. However, GI and nucleic acid values showed that the mature stage is from March to July and that the main spawning season is August. The peak RNA and DNA contents were good indicators of sexual maturation in females and males, respectively. The variation in protein content corresponded with the RNA/DNA ratios. Key words: Gomphina melanaegis, Gonad, Reproductive cycle, RNA/DNA

참고문헌 (19)

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