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Ⅰ
김민석 김동수 김민선 이종근 김종화 강일권
부경대학교( )
Distribution Characteristics Composition of Fishes by a Bottom Trawl in the Jointly Controlled Waters of the East China Sea
Abstract
This study was investigated the species composition of demersal fishes by a bottom trawler GAYA, in order to be used basic data for resources management of fishery in the jointly controlled waters of the West sea. We caught 39 species, 5,532 individuals and 322.518kg in biomass. The number of species was the fewest of the jointly controlled waters of the East china sea and boundary zone between Busan and Tsushima. The first dominant species in individuals in summer was Oregonia gracilis, and in biomass was angler. But angler was the first dominant species in 7 stations of 12 stations. It was a peculiar phenomenon that cod which lives in a cold current was caught in the northern part of the West sea. In this connection it seems to be needs for oceanographic research. Catch per unit effort (kg/hr) of bottom trawl was the higher in northern part and in right line of all surveyed area respectively.
Key words : Jointly controlled waters, Biomass, Dominant species, Catch per unit effort
김민석 김동수 김민선 이종근 김종화 강일권
부경대학교( )
Distribution Characteristics Composition of Fishes by a Bottom Trawl in the Jointly Controlled Waters of the East China Sea
Abstract
This study was investigated the species composition of demersal fishes by a bottom trawler GAYA, in order to be used basic data for resources management of fishery in the jointly controlled waters of the West sea. We caught 39 species, 5,532 individuals and 322.518kg in biomass. The number of species was the fewest of the jointly controlled waters of the East china sea and boundary zone between Busan and Tsushima. The first dominant species in individuals in summer was Oregonia gracilis, and in biomass was angler. But angler was the first dominant species in 7 stations of 12 stations. It was a peculiar phenomenon that cod which lives in a cold current was caught in the northern part of the West sea. In this connection it seems to be needs for oceanographic research. Catch per unit effort (kg/hr) of bottom trawl was the higher in northern part and in right line of all surveyed area respectively.
Key words : Jointly controlled waters, Biomass, Dominant species, Catch per unit effort
ㆍ ㆍ
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Ⅱ
< 1>
[ 1]
.
Ⅲ
정점별 1.
21.0%
0.7%
78.3%
개체수
갑각류 어류
연체류
73.8%
1.2%
25.0%
생체량
갑각류
어류 연체류
[ 2]
31,780 27,910
94,779
< 2>
[ 3] ( ) ( )
ㆍ
[ 4]
< 3> 1 2
[ 5]
[ 6]
구역별 2.
[ 7] (A: B:
)
< 4>
ㆍ
ㆍ
[ 8]
< 5> Line
라인별 3.
ㆍ
77.0%
3.3%
19.7%
ML개체수
어류 연체류
갑각류
96.2%
0.6% 3.2%
ML생체량
어류 연체류 갑각류
15.5%
0.4%
84.1%
RL개체수
어류 연체류 갑각류
61.7%
1.6%
36.7%
RL생체량
어류
연체류 갑각류
[ 9]
9.0%
47.1%
5.7%
4.9%
8.4%
24.9%
ML개체수
꼼치
아귀
대구 자주새우 긴집게발게
기타
4.5%
56.8%
28.1%
1.4%1.8% 7.4%
ML생체량
꼼치
대구 삼세기 아귀
긴집게발게 기타
1.7% 5.2% 5.3%
0.8%
83.1%
3.9%
RL개체수
꼼치 아귀 노란벤자리 대구 긴집게발게
기타
4.1%
19.4%
12.5%
14.5%
35.8%
13.7%
RL 생체량
꼼치
아귀
노란벤자리
대구 긴집게발게
기타
[ 10]
[ 11]
< 6> Line
.
Ⅳ
