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한국 남해에 출현하는 먹장어 Eptatretus burgeri의 재생산 특성
김두남,황강석,차형기,박준수,김정년,문성용,이정훈,KIM, Doo-Nam,HWANG, Kang-Seok,CHA, Hyung-Kee,PARK, Jun-Su,KIM, Jung-Nyun,MOON, Seong-Yong,LEE, Jeong-Hoon 한국수산해양기술학회 2018 수산해양기술연구 Vol.54 No.2
The reproduction characteristics of hagfish Eptatretus burgeri were examined using individuals caught in the South Sea of Korea. The spawning season and size at minimum sexual maturity of this species were characterized based on a gonad-somatic index (GSI) and monthly variation egg size (long axis). From monthly variation of GSI, the spawning season was estimated to be from August to September. Developing eggs larger than 10 mm were found in March, and the largest egg size was found in July. The first spawning length was 34.2 cm TL. Batch fecundity ranged from 13 to 117 eggs for hagfish sized from 34.2 cm TL to 77.0 cm TL, respectively, and increased linearly with total length.
김두남 ( Doo Nam Kim ),손호선 ( Haw Sun Sohn ),안용락 ( Yong Rock An ),박겸준 ( Kyum Joon Park ),김현우 ( Hyun Woo Kim ),안소언 ( So Eon Ahn ),안두해 ( Du Hae An ) 한국수산과학회 2013 한국수산과학회지 Vol.46 No.6
In 2011, the system for conserving and managing cetacean resources in Korea changed. The status of the cetacean bycatch was analyzed using a distribution certificate that was issued by the coast guard. During 2011~2012, 12 species were bycatch in Korean waters: three species of baleen whale and nine species of dolphin. The finless porpoise (Neophocaena phocaenoides) was the dominant species, followed by the common dolphin (Delphinus delphis), harbor porpoise (Phocoena phocoena), and Pacific white-sided dolphin (Lagenorhynchus obliquidens). Among the baleen whales, the common minke whale (Balaenoptera bonaerensis) was first and Bryde`s (Balaenoptera edeni) and humpback (Megaptera novaeangliae) whales appeared in the Korea Strait and East Sea,respectively. Among the dolphins, the finless porpoise ranked first in the Yellow Sea. The common dolphin, Pacific white-sided dolphin, and harbor porpoise were more frequent in the East Sea than in other waters. The cetacean bycatch was caused mainly by pots, set nets, gill nets, and stow nets. Among the three species of baleen whale, the common minke whale was caught by pots and set nets, and comprised over 68.9% of the total bycatch in 2011 and 56.2% in 2012. Comparing the bycatch caused by fishing gears by area in 2011 and 2012, 97.9% and 99.6%, respectively, of the finless porpoise bycatch in the Yellow Sea was by stow nets. In the Korea Strait, trawl bycatch comprised 67.3% in 2011 and 73.0% in 2012, followed by gill nets, set nets, and pots targeting finless porpoise and common minke whales. In the East Sea, gill nets were responsible for 46.7% in 2011 and 61.2% in 2012, followed by set nets and pots.
한국 남해에 출현하는 먹장어 Eptatretus burgeri 의 재생산 특성
김두남 ( Doo-nam Kim ),황강석 ( Kang-seok Hwang ),차형기 ( Hyung-kee Cha ),박준수 ( Jun-su Park ),김정년 ( Jung-nyun Kim ),문성용 ( Seong-yong Moon ),이정훈 ( Jeong-hoon Lee ) 한국어업기술학회 2018 수산해양기술연구 Vol.54 No.2
The reproduction characteristics of hagfish Eptatretus burgeri were examined using individuals caught in the South Sea of Korea. The spawning season and size at minimum sexual maturity of this species were characterized based on a gonad-somatic index (GSI) and monthly variation egg size (long axis). From monthly variation of GSI, the spawning season was estimated to be from August to September. Developing eggs larger than 10 mm were found in March, and the largest egg size was found in July. The first spawning length was 34.2 cm TL. Batch fecundity ranged from 13 to 117 eggs for hagfish sized from 34.2 cm TL to 77.0 cm TL, respectively, and increased linearly with total length.
뱀머리돌고래, Steno bredanensis에서 분리된 Enterococcus faecium의 특성
김명석 ( Myoung Sug Kim ),최혜승 ( Hye Sung Choi ),한현자 ( Hyun Ja Han ),김두남 ( Doo Nam Kim ),안두해 ( Du Hae An ),정승희 ( Sung Hee Jung ) 한국어병학회 2013 한국어병학회지 Vol.26 No.3
제주도에서 좌초된 뱀머리돌고래, Steno bredanensis에서 Enterococcus faecium이 분리 되었다. E. faecium은 간, 비장, 신장, 심장, 폐에서 1.54 × 106 cfu/g까지분리 되었다. E. faecium KCCM 12118과 분리균주사이의 효소 활성은 차이가 없었고 생화학적 특성은 같거나 유사하였다. 모든 분리균주는 6 종류 항균제에 대해 다재내성을 갖고 있었으나 chloramphenicol 과 vancomycin에 대한 내성은 없었다. Enterococcus faecium was isolated from the internal organs of the rough-toothed dolphine, Steno bredanensis which was stranded at Jeju island. E. faecium were isolated from the liver, spleen, kidney, heart and lung up to 1.54 × 106 cfu/g. No significant differences of bacterial enzyme activities between E. faecium KCCM 12118 and the isolates were found. Biochemical constellation was the same or similar to that of E. faecium KCCM 12118 according to API20 strep. All isolates had the multi-drug resistance to 6 antibiotics by an agar disk diffusion method but these isolates didn`t have resistance to chloramphenicol and vancomycin.
우리나라 대형선망어업에서 어획된 태평양참다랑어의 CPUE 표준화(2003-2016)
이성일 ( Sung Il Lee ),김두남 ( Doo-nam Kim ),이미경 ( Mi-kyung Lee ),조헌주 ( Heon-ju Jo ),구정은 ( Jeong-eun Ku ),김중진 ( Jung-jin Kim ) 한국어업기술학회 2018 수산해양기술연구 Vol.54 No.2
Pacific bluefin tuna (Thunnus orientalis) has been mostly caught by the Korean offshore large purse seine fishery in Korean waters. The annual catch of Pacific bluefin tuna caught by the offshore large purse seine fishery in Korean waters showed less than 1,000 mt until the 1990s except for 1997. The catch sharply increased to 2,401 mt in 2000 and recorded the highest of 2,601 mt in 2003, but the catch has generally decreased with a fluctuation thereafter. The main fishing ground of Pacific bluefin tuna of this fishery is formed around Jeju Island. However, it expanded to the Yellow Sea, the coastal of Busan, and the East Sea, which depends on the migration patterns of Pacific bluefin tuna by season. The CPUE standardization of Pacific bluefin tuna was conducted using Generalized Linear Model (GLM) to assess the proxy of the abundance index. The data used for the GLM were catch (weight), effort (number of hauls), catch ratio of Pacific bluefin tuna, moon phase by year, quarter and area. The standardized CPUE from 2004 to 2011, except for 2003 and 2010, showed a steady trend, and then increased until 2014. The CPUE in 2015 decreased, and in 2016 was higher than that in 2015. The result of GLM suggests that the effect of the catch ratio of Pacific bluefin tuna is the largest factor affecting the nominal CPUE.