Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)
- Volume 18 Issue 5
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- Pages.477-483
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- 1985
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- 0374-8111(pISSN)
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- 2287-8815(eISSN)
On the Maturity and Spawning of the Longchin Goby Chasmichthys dolichognathus(HILGENDORF)
점망둑, Chasmichthys dolichognathus의 성성숙과 산란
- BAEK Hea Ja (Department of Marine Biology, National Fisheries University of Pusan) ;
- KIM Hyung Bae (Department of Marine Biology, National Fisheries University of Pusan) ;
- LEE Taek Yuil (Department of Marine Biology, National Fisheries University of Pusan) ;
- LEE Byung Don (Department of Marine Biology, National Fisheries University of Pusan)
- Published : 1985.09.01
Abstract
This paper describes seasonal changes of total length, hepatosomatic index (HSI), fatness, egg-diameter composition, and fecundity of the longchin goby Chasmichthys dolichognathus(HILGENDORF). The specimens used were captured in the tide pool of Tongbaekseom, Pusan, Korea from February 1983 to January 1984. The age of longchin goby, tested by size frequency, was believed to be usually one year which grows to 8.0 cm in total length. The annual variations of HSI reached the maximum in the early spring when the gonad was actively growing and decreased during the spawning season from April to July. The coefficients of fatness were represented low values for the spawning periods. Frequency distribution of the egg diameter of mature ovary has three modes: one is the evident mode of the ripe eggs group, and the other two are modes of maturing and immature eggs groups. And an individual is considered as spawns one in the spawning season. Relationships between the fish size in total length (TL cm) and the number of ovarian eggs(F), the fish weight (BW g) and the number of ovarian eggs are indicated by the exponential equation respectively : F=42.585
부산 해운대 동백섬 연안에서 1983년 2월부터 1984년 1월까지 채집한 점망둑, Chasmichthys dolichognathus을 대상으로 그들의 성성숙과 산란에 관여하는 형질특성을 조사한 결과는 다음과 같다. 1. 월별체장조성 조사 결과, 점망둑은 만 1년만에 성숙하여 산란을 마치고 사망하는 1년생 어류로 판단되었다. 2. 간숙도지수는 암
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