Species composition and distribution property of dredge fishery in Yeongil Bay, Korea

Abstract

The species composition and distribution of catches by dredge gear in the Yeongil Bay, Korea were investigated on a seasonal basis from February to November, 2015. Total catches consisted of 44 species and 35 families. They were 13 species of fish, 10 species of crustacea, 5 species of echinodermata, 5 species of gastropoda, 4 species of cephalopoda and 3 species of bivalvia. Major catch species was shellfish and had seasonal variations in catch. In spring and winter, the catch of ark shell (Scapharca broughtonii) was increased. Adversely, the catch of admas venus clam (Callithaca adamsi) increased in sunmmer and autumn. Species diversity indices was high as the value of 1.99 in spring, and low to the value of 0.34 in summer. In addition, multi dimentional scaling (MDS) indices also was high in spring as the value of 1.99.In summer, the index was low as the value of 0.34. Similarity analysis based on species data was transformed by fourth root. With the result of cluster analysis and MDS analysis, species was divided into two groups. The first group as Group A consists of winter and spring species and another was Group B made of species in summer and winter.

Komposisi biota dasar hasil tangkapan alat garok pada perairan pesisir Kronjo, Tangerang

“…Kemudian bulan Juni krustasea dan cephalopoda makin meningkat seperti terlihat pada Gambar 4. Alat tangkap dredge yang beroperasi di Yeongil Bay Korea tercatat komposisi tangkapan terbesar adalah ikan dan krustasea yang mencapai 30% dan 10% kemudian diikuti echinodermata dan gastropoda masing-masing 5% (Hong et al, 2016).…”

Influence on the catch of shellfish by offshore dredge fishery according to change fishing area to the construction of the Samangeum Dike in Jeollabuk-do, Korea

“…의 개발에 관한 연구 (Cho and Ko, 1994a;1994b), 황해 의 충남 연안에서 형망으로 조사된 저서무척추동물의 분포 (Je et al, 1991), 피조개 형망의 어획선택성에 관한 연구 (Kim, 1999), 민들조개 (Gomphina melanaegis) 형 망의 갈퀴에 의한 어획선택성 (Park and Kim, 2000), 형망어구에 대한 민들조개의 어획선택성 (Cho et al, 2001), 경상북도 영일만에 분포하는 이매패류의 자원조 사 (Cha et al, 2012), 강릉연안에서 형망의 갈퀴 간격 및 망목 크기에 따른 어획 생물의 종조성 및 군집분석 (An et al, 2014), 포항 영일만 형망어업의 어획 및 혼획 실태 (An et al, 2015)와 영일만 형망어업 어획물의 종조 성 및 분포 특성 (Hong et al, 2016 Schaefer, 1954).…”