거문도 해역 대롱수염새우(Solenocera melantho)의 성장과 성 성숙 = Growth and Reproduction of Deep-Water Mud Shrimp (Solenocera melantho) around Geomun Island, Korea

다국어 초록 (Multilingual Abstract)

This paper describes reproduction, population structure, growth and size at sexual maturity of a deep-water mud shrimp (Solenocera melantho) in the adjacent waters of Geomun Island, Korea. The shrimp was caught by a beam trawl from November 1998 to December 1999. Spawning period was estimated by gonadosomatic index to be from August to early November with a peak in October to early November. Female shrimps were 12% matured at 16mm in carapace length, 33% matured at 18mm and 75% matured at 22mm. The size at 50% maturity for female was estimated to be 20.65mm in carapace length. Breeding season was estimated to be from August to early November with a peak in October to early November. The size at 50% inseminated was 19.81mm CL. The fecundity was 87,500-405,200 and related exponentially to carapace length and total weight. This species survived between 25 and 26 months. The maximum carapace length of females and males were 48mm and 34mm respectively. Sex ratio was 51.3%, and the females were preponderant. Growth was estimated by modified von Bertalanffy growth function incorporating seasonal variation in growth in both years females (K=1.019/yr and L∞=51.731mm CL) grew faster, reaching a larger size at a given age than males (K=1.848/yr, and L∞=27.499mm CL). This is indicated by differences in growth performance indices (φ') between females (3.291) and males (3.145).

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