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문치가자미(Pseudopleuronectes yokohamae) 치어의 이석 일륜을 이용한 성장 및 산란시기 추정
주형운,곽우석,Joo, Hyeong-Woon,Gwak, Woo-Seok 한국해양학회 2014 바다 Vol.19 No.1
2011년 2월부터 5월까지 경남 남해군 연안에서 소형 Beam trawl에 채집된 문치가자미 치어 이석을 관찰 분석하여 부화시기와 초기성장을 추정하였다. 문치가자미 치어는 2011년 2월에서 5월까지 총 175개체가 채집되었며, 체장-체중 관계식은 $W=9.76^*10^{-8}L^{4.39}$ ($r^2=0.93$)를, 체장-이석경 관계식은 L=0.0795R+0.2249 ($r^2=0.92$)로 추정되었다. 체장 성장은 $L_t=135{\exp}\{-{\exp}[0.0103(t-116)]\}$ ($r^2=0.83$)로 Gompertz 성장식이 가장 유의하게 회귀되었다. 이석 일령으로부터 추정한 주 산란시기는 12월에서 1월인 것으로 추정되었다. Hatching date, main spawning period and growth of juvenile marbled flounder (Pseudopleuronectes yokohamae) were determined by analysis of microstructure in otoliths. Marbled flounders were collected by a small beam trawl in Namhae from February 2011 to January 2012. The length (L, mm) was related to body weight (W, g); $W=9.76^*10^{-8}L^{4.39}$ ($r^2=0.93$). The length was also related to otolith radius (R, ${\mu}m$); L=0.0795R+0.2249 ($r^2=0.92$). The growth in length was represented by Gompertz growth curve; $L_t=135{\exp}\{-{\exp}[0.0103(t-116)]\}$ ($r^2=0.83$). The hatching date calculated from the number of daily growth increments in otoliths was between mid-December and mid-February.
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우리나라 남해와 서해에서 채집된 대구의 계수 형질 비교
곽우석,주형운 한국어류학회 2017 韓國魚類學會誌 Vol.29 No.4
The morphomeristic features of Gadus macrocephalus was compared using fish samples from Jinhae Bay in the South Sea and Boryeong in the Yellow Sea, Korea. In total, 332 individuals were sampled from 2 locations to investigate the differences in the morphomeristic features and determine applicability of it as a means of stcok discrimination of G. macrocephalus. No significant differences in the number of vertebrae, 1st to 3rd dorsal-fin soft rays, 1st and 2nd anal-fin soft rays, pectoral-fin soft ray, pelvic-fin soft ray, and gill raker were found between two populations from Jinhae Bay and Boryeong. The results of present study revealed that morphomeristic features of G.macrocephalus was not applicable for stock discrimination. 이번 연구는 남해 진해만과 서해 보령에서 채집된 대구 간의 계수 형질 차이를 확인하기 위해 수행하였다. 연구에 사용된 시료는 2006년 12월부터 2008년 2월까지 경남 거제시 장목면 외포 위판장에서 210개체, 2007년 충남 보령시 수협 위판장에서 122개체를 채집하였다. 계수 형질인 대구의 척추 골수, 제1등지느러미 연조수, 제2등지느러미 연조수, 제3등지느러미 연조수, 제1뒷지느러미 연조수, 제2뒷지느러미 연조수,가슴지느러미 연조수, 배지느러미 연조수, 새파수에서 두 해역간 유의한 차이가 없었다. 이번 연구에서 대구의 계수 형질 분석 결과 진해만 대구와 서해 대구는 계수 형질에 있어서 차이가 없는 것으로 나타났다. 결과적으로 대구의 경우, 계수 형질은 계군 분석을 위한 분류 형질로 적합하지 않은 것으로 판단된다.
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황해중앙부에서 저층트롤에 의해 어획된 하계의 어류 종조성 및 분포특성 (2008-2014)
고은혜 ( Eun Hye Koh ),주형운 ( Hyeong Woon Joo ),이동우 ( Dong Woo Lee ),차형기 ( Hyung Kee Cha ),최정화 ( Jung Hwa Choi ) 한국수산과학회(구 한국수산학회) 2016 한국수산과학회지 Vol.49 No.6
The community composition and distribution of fish species in the middle of the Yellow Sea were investigated in summer from 2008 to 2014. A total of 72 demersal fish species from 46 families and 17 orders were collected. The most common species were Larimichthys polyactis, Engraulis japonicus, and Chaeturichthys hexane, which account ed for 72.0% of the total number of individuals while Liparis tanakai, Larimichthys polyactis, and Lophius litulon accounted for 67.8% of the total biomass. A cluster analysis based on the Bray-Curtis similarity revealed that the fish community fell into three groups, according to latitude. Principal Component Analysis (PCA) and correlation analy -sis showed that variation in bottom water temperature could act as an indicator of variation in community structure and abundance of the dominant species. Characteristics of fish communities, such as the number of species, the total number of individuals (/km<sup>2</sup>), and biomass (/km<sup>2</sup>), were highly correlated with bottom water temperature and depth.
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제주도 남동부해역에서 채집된 은붕장어, Gnathophis nystromi (뱀장어목: 붕장어과) 엽상자어의 분포특성 및 형태발달
지환성 ( Hwan Sung Ji ),최정화 ( Jung Hwa Choi ),윤상철 ( Sang Chul Yoon ),주형운 ( Hyeong Woon Joo ) 한국어업기술학회 2015 수산해양기술연구 Vol.51 No.4
The twenty six specimens of leptocephali (15.8-32.6 mm TL) of the family Congridae, collected from southeastern waters offshore of Jeju Island during August 2014, and were identified by means of morphology and genetics. Those specimens were identified as belonging to the family Congridae based on various combinations of morphological characters. An analysis of the partial 12S rRNA sequences (886 base pairs) of mitochondrial DNA showed that our specimens must be Gnathophis nystromi, because their sequences were concordant with those of G. nystromi adult (genetic distance= 0.001), furthermore their total myomeres being consistent with those of G. nystromi adult. Catch rates of G. nystromi leptocephali were higher in the offshore regions than coastal regions of Jeju Island. The smallest leptocephali (< 20 mm TL) were collected offshore from Jeju Island. We hypothesize that one of the spawning grounds of G. nystromi is located offshore in the Jeju Island. In conclusion, the hatched preleptocephali of G. nystromi might have been transported from offshore near Jeju Island to the Korea Strait by the Kuroshio Current and Tsushima Warm Current.
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