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왕돌초 주변 해역에서 서식하는 어류의 종조성 및 계절변동
곽석남(Seok Nam Kwak),이진영(Jin Yeong Lee),강진묵(Jin Muk Kang),김성수(Sung Su Kim),정승민(Seung Min Chung),김광복(Gwang Bok Kim) 전남대학교 수산과학연구소 2021 수산과학연구소논문집 Vol.30 No.1
This study was investigated seasonal variation and species composition of fish species at Wang dol reef from November 2019 to August 2020. A total of 31 fish species was occurred, and the dominant fish species were dermesal fishes. The number of individuals of fishes was higher at August 2020, lower at March 2020. The number of species was higher than another study. Thamnaconus modestus was dominant, than Eopsetta grigorjewi, Hexagrammos otakii and Sebastiscus marmoratus were followed. Seasonal variation of dominant species that Eopsetta grigorjewi in March 2020, Hexagrammos otakii in May 2020 and Thamnaconus modestus in November 2019 and August 2020. These results indicated that difference between water temperature and diet community.
갯벌 조간대에서 서식하는 낙지 (Octopus minor)의 주 산란기 및 성 성숙
곽석남(Seok Nam Kwak),김성수(Sung Su Kim),정승민(Seung Min Chung),강진묵(Jin Muk Kang),이진영(Jin Yeong Lee) 전남대학교 수산과학연구소 2021 수산과학연구소논문집 Vol.30 No.1
A total of 315 individuals of Octopus minor were collected in the mud flat, Korea from May to November 2016. The sex ratio (female : male) of O. minor was higher female with 0.54 : 0.46. The sexual group maturity by logistics model was F=0.0093ML0.2712 with and average fecundity occurred 95 individuals. Female individuals with higher 8.0 cm ML were full maturity. The gonadsomatic index (GSI) was the highest in May and June 2016 for female and male, respectively. These results indicated that the main spawning period of O. minor was from May to June.
곽석남(Seok-Nam KWAK),김성수(Sung-Soo KIM),이광섭(Kwang-Sup LEE),정승민(Jin-Muk KANG),강진묵(Jin-Muk KANG) 한국수산해양교육학회 2020 水産海洋敎育硏究 Vol.32 No.3
A total of 345 individuals of Octopus minor were collected in the mud flat, Korea from May 2017 to November 2017. The mantle size of O. minor ranged from 2.3 to 9.3cm in mantle length(ML), and most of individuals were about 7cm (ML). O. minor was a carnivore which consumed mainly brachyurans. Its diets also included a small amount of bivalves, macurans, stomatopods, anomurans, and gammarid amphipods. The diets of O. minor underwent size-related changes; smaller individuals consumed polychaetes, while larger individuals ate bivalves and brachyurans. The dietary breadth index of O. minor was increased with increasing of their size.