Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)
- Volume 3 Issue 2
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- Pages.110-116
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- 1970
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- 0374-8111(pISSN)
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- 2287-8815(eISSN)
BIOLOGICAL STUDIES ON THE FRESH-WATER SHRIMPS IN KOREA 2. The Ecology of Palaemon modestua
한국산 민물 새우류에 관한 생물학적 연구 2. Palaemon modestua의 생태
Abstract
The fresh_water shrimp, Palaemon modestua is one of the most important types of bait f[r fishing and can be found abundantly in the Nak-Dong River. The larval development of Palaemon modestua in the laboratory was reported by Liu (1949), Kown and Uno (1968), but they didn't give any ecological features in the natural environments. Shrimps were collected from the Nak-Dong River near Pusan, once a month from July to December 1953 and from February to June 1969 respectively. The following is a summary of the results: 1. They breed from April to September, mainly in July. 2. A generation of this type of shrimps appears to be approximately one year and after breeding they die off up untill the end of October. 3. The sex ratio (female=100) is
낙동강산 민물 새우, Palaemon modestua의 성장, 산란 및 성비등의 생태에 관해 조사한 결과는 아래와 같다. 1. 산란기간은
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