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러시아측 동해 북서부 해역과 한국측 동해 남서부 해역 트롤 조사에 어획된 어류의 종조성 및 양적변동
손명호 ( Myoung Ho Sohn ),윤상철 ( Sang Chul Yoon ),이성일 ( Sung Il Lee ),윤병선 ( Byung Sun Yoon ),차형기 ( Hyung Kee Cha ),김종빈 ( Jong Bin Kim ),( Pavel Kalchugin ),( Sergey Solomatov ) 한국수산해양기술학회 2015 수산해양기술연구 Vol.51 No.3
To examine species composition, abundance and biomass of fishes in the northwestern East Sea of Russian EEZ, trawl survey were conducted at 31 sampling stations from 2006 to 2008. Also, trawl survey were conducted at 21 sampling stations in the southwestern East Sea of Korean EEZ from 2006 to 2008. A total of 67 fishes were collected in the northwestern East Sea of Russian EEZ, a total of 39 fishes were collected in the southwestern East Sea of Korean EEZ. Among them, a total of 53 fishes were collected in the northwestern East Sea of Russian EEZ only, and a total of 25 fishes were collected in the southwestern East Sea of Korean EEZ only. Mean abundance per area which caught by trawl survey in the northwestern East Sea ranged from a high of 116,478 inds./km2 in 2008 to a low of 19,737 inds./km2 in 2006. And mean abundance per area in the southwestern East Sea ranged from a high of 89,129 inds./km2 in 2006 to a low of 8,234 inds./km2 in 2008. Mean biomass per area which caught by trawl survey in the northwestern East Sea ranged from a high of 11,333 kg/km2 in 2008 to a low of 2,439 kg/km2 in 2006. And mean biomass per area in the southwestern East Sea ranged from a high of 6,273 kg/km2 in 2006 to a low of 1,062 kg/km2 in 2008. Cluster analysis, based on a Bray-Curtis similarity matrix of fourth root transformed data of number of species and individuals per area, showed division into three different groups by depth in the northwestern and southwestern East Sea.
강원 연안에서 삼중자망에 의한 어획물의 종조성 및 분포특성
손명호 ( Myoung Ho Sohn ),윤병선 ( Byoung Sun Yoon ),박정호 ( Jeong Ho Park ),최영민 ( Young Min Choi ),양재형 ( Jae Hyeong Yang ) 한국수산과학회 2014 한국수산과학회지 Vol.47 No.6
This study was conducted to provide basic data for optimal fisheries management through the accurate understanding the catches, fishing level, species composition, distribution characteristics and fisheries status of trammel net in Gangwon Province. As the results of trammel net survey, Pisces were collected 77 species, 1,983.0 kg, Crustacea 9 species, 569.0 kg, Cephalopoda 5 species, 75.3 kg, Gastropoda 12 species, 16.5 kg in the coastal waters of Sokcho and Pisces 55 species, 3,681.5 kg, Crustacea 6 species, 2,229.8 kg, Gastropoda 10 species, 72.8 kg, Cephalopoda 4 species, 10.1 kg in the coastal waters of Donghae, respectively. The catches of important species with season and depths showed that the main target species is Pleuronectidae spp. at all depth and Aptocyclus ventricosus at <100 m in Sokcho, Liparis spp. and Dasycottus setiger at 200-500 m in Donghae, respectively. The mean total length (cm) of Gadus macrocephalus and Aptocyclus ventricosus didn``t appear significant difference, but the mean total length of Pleuronectidae spp., Liparis spp. and D. setiger in Donghae is bigger than in Sokcho. From the cluster and MDS analysis based on Bray-Curtis similarity matrix of fourth root transformed, catches data of dominant species in the coastal waters of Sokcho and Donghae was divided into three different groups of the demersal organisms community in 12 survey of Donghae (Group A) and Jul., Oct.-Dec. survey of Sokcho (Group B) and Jan.-Jun. and Aug.-Sep. survey of Sokcho (Group C).
동해구외끌이중형저인망에 의한 동해 중남부 해역 저어류의 종조성 및 군집구조
손명호 ( Myoung Ho Sohn ),박정호 ( Jeong Ho Park ),윤병선 ( Byoung Sun Yoon ),최영민 ( Young Min Choi ),김진구 ( Jin Koo Kim ) 한국수산과학회 2015 한국수산과학회지 Vol.48 No.4
We examined the species composition and community structure of demersal fish in the middle and southern coastal waters of the East Sea of Korea by surveying a commercial Danish seine fishery from 2010 to 2013. We considered the waters north of 37°N as middle and those south of 37°N as southern waters. A total of 79 demersal fish species belonging to 18 families were collected. Of these, 59 species (77.6%) inhabited only the East Sea as opposed to the West and South Seas of Korea, and most were resident species. The species and biomass were similar between the two portions of the study area. The sandfish Arctoscopus japonicus (78.0%) and the blackfin flounder Glyptocephalus stelleri (65.1%) were the most common species and accounted for the most biomass in the middle and southern waters, respectively. Fish were most abundant at shallow depths (50-100 m) in the middle portion of the East Sea. Using a cluster analysis, we divided the species composition and community structure at the sampling stations into three groups: middle portion (group A), deep area of the southern portion (group B), and shallow areas of the southern portion (group C). A. japonicas and G. stelleri were dominant in groups A and B, while G. stelleri and Clupea pallasii were dominant in group C.
한국 동해안 기름가자미(Glyptocephalus stelleri)의자원평가 및 적정어획량 추정
손명호 ( Myoung Ho Sohn ),양재형 ( Jae Hyeong Yang ),박정호 ( Jeong Ho Park ),이해원 ( Hae Won Lee ),최영민 ( Young Min Choi ),이재봉 ( Jae Bong Lee ) 한국수산과학회 2013 한국수산과학회지 Vol.46 No.5
The blackfin flounder Glyptocephalus stelleri is a commercially important species in the East Sea of Korea, but its catches and biomass have decreased gradually in recent years. This study estimated the optimal catch (acceptable biological catch, ABC) for the effective management of this species by estimating population ecology parameters and the stock biomass of blackfin flounder in the East Sea of Korea. The estimated instantaneous coefficient of total mortality (Z) of blackfin flounder was 1.0542/year, the survival rate (S) was 0.3485, and the instantaneous coefficient of natural mortality (M) was 0.3637/year. From the values of S and M, the instantaneous coefficient of fishing mortality (F) was calculated to be 0.6905/year. The age at first capture was 1.304 years, and the total length was 11.5 cm at that time. On the basis of these parameters, the annual biomass was estimated by a biomass-based cohort analysis using annual catch data in weight by year for 1991-2012 in the East Sea of Korea. The annual biomass peaked in 1997 at about 12,800 mt and then subsequently declined continuously to a level of 10,500 mt in 2004 and to 9,800 mt in 2011and 2012. The maximum sustainable yield and F0.1 were estimated as 3,547 mt and 0.3595/year, respectively. Using these estimations, the ABC was estimated to be 3,571 mt in tier 5, 3,397 mt in tier 4, and 2,622 mt in tier 3.
한국산 날개줄고기과 (Agonidae) 어류 1 미기록종, Aspidophoroides monopterygius
박정호 ( Jeong Ho Park ),윤병선 ( Byoung Sun Yoon ),손명호 ( Myoung Ho Sohn ),최영민 ( Young Min Choi ),김진구 ( Jin Koo Kim ) 한국어류학회 2014 韓國魚類學會誌 Vol.26 No.4
쏨뱅이목 날개줄고기과에 속하는 Aspidophoroides monopterygius 6개체 (표준체장 151.4~171.2 mm) 가 강원도 삼척과 강릉 연안에서 동해구외끌이중형저인망에 의해 채집되었다. 본 종은 긴 체형, 1개의 등지느러미, 입이 몸의 전방에 위치, 두부에 수염이 없으며 주둥이에 몸의 후방을 향하는 날카로운 비골극이 있는 것이 특징이다. 본 종은 민어치(Anoplagonus occidentalis)와 형태적으로 매우 유사하지만, 비골극을 가지는 점에서 차이가 있다. 우리나라에서 처음 보고되는 본 종의 국명으로 “악어줄고기”를 제안한다. Six specimens (151.4~~171.2 mm in standard length) of the poacher Aspidophoroides monopterygius were collected by Danish seine net in the coastal waters off Samcheok and Gangneung, the East Sea, Korea. This species is characterized by a slender body, one dorsal fin, terminal mouth, no barbel on the head, and a pair of nasal spines on the snout. It differs from Anoplagonus occidentalis Lindberg in having a nasal spine. We describe it as the first record within the Korean fish fauna, and propose the new Korean name “Ak-eo-jul-go-gi” for this species.
한국산 양볼락과(Scorpaenidae) 어류 1 미기록종, Hozukius emblemarinus
박정호 ( Jeong Ho Park ),윤병선 ( Byoung Sun Yoon ),손명호 ( Myoung Ho Sohn ),최영민 ( Young Min Choi ),김진구 ( Jin Koo Kim ) 한국어류학회 2014 韓國魚類學會誌 Vol.26 No.3
쏨뱅이목 양볼락과에 속하는 Hozukius emblemarinus 1개체(표준체장 196.4 mm)가 울산 연안에서 저층 트롤로 채집되었다. 본 개체는 체고가 높은 난형이고 눈 하단에 3개의 가시가 있으며, 등지느러미 극조가 12개, 두부 대부분이 다양한 크기의 비늘로 덮여 있으며 꼬리지느러미 후단부가 직선형인 것이 특징이다. 우리나라에서 처음 보고되는 본 종의 국명으로 “동해큰눈볼락”을 제안한다. A single specimen (196.4 mm standard length) of the scorpaenid Hozukius emblemarinus was collected by a bottom trawl from the coastal waters off Ulsan, East Sea, Southern Korea. The specimenis characterized by a deep oblong body, three spines on the lower margin of the eye, a dorsal fin with 12 spines, a head mostly covered with various sizes of scales, and a truncate posterior margin of the caudal fin. This is the first record of H. emblemarinus in Korea; we therefore add the species to the Korean fish fauna and propose the new Korean name, “Dong-hae-keun-nun-bol-rak” for this species.
한국 동해 남부 해역에서 물수배기과(Psychrolutidae)어류1미기록종 Psychrolutes Pustulosus
박정호 ( Jeong-ho Park ),( Sergei Solomatov ),( Pavel Kalchugin ),윤병선 ( Byoung-sun Yoon ),손명호 ( Myoung Ho Sohn ),김진구 ( Jin-koo Kim ) 한국어류학회 2015 韓國魚類學會誌 Vol.27 No.3
쏨뱅이목 물수배기과에 속하는 Psychrolutes pustulosus 3개체 (표준체장 56.7~92.4 mm)가 포항 해역에서 저층 트롤로 채집되었다. 이 소형종은 두부에 큰 감각공이 산재하고 몸이나 지느러미에 무늬가 없고 두부에 가시가 없으며 등지느러미 극조부와 연조부에 결각이 없이 연결되는 것이 특징이다. 이 어종을 우리나라 어류상에최초로 포함시키고 국명으로 "민무늬물수배기"를 제안한다. Three specimens (56.7~92.4 mm in standard length) of the small psychrolutid Psychrolutes pustulosus (Schmidt, 1937) were collected by bottom trawl in the coastal waters off Pohang, the southern East Sea, Korea. This species is characterized by large cephalic pores, no markings on the body or fins, no spines on the head, and no notch between the spiny and soft-rayed dorsal fin. We describe specimens the southernmost distribution in the world, and compare them with two congeneric species from Russia. We thus present the first record of Psychrolutes pustulosus (Schmidt, 1937) within the Korean fish fauna and propose the new Korean name "Min-mu-nui-mul-subae- gi" for this species.
생활사 기반 모델을 이용한 동해 명태(Gadus chalcogrammus)의 개체군 평가
김규한 ( Kyuhan Kim ),손명호 ( Myoung Ho Sohn ),현상윤 ( Saang-yoon Hyun ) 한국수산과학회(구 한국수산학회) 2017 한국수산과학회지 Vol.50 No.1
Since the late 1990s, walleye pollock Gadus chalcogrammus fisheries in Korean waters have been considered collapsed. Although many fisheries scientists suspect that the collapse might have been triggered by overexploitation of juvenile pollock or environmental changes, such conjectures have been neither tested nor investigated, partially because of limited data on the population. There has been no survey of the population, and the ages of fish in fishery catch have rarely been identified. Instead, fishery catch data from 1975-1997 included information about two life stages, `juveniles and adults,` and data on catch-per-unit-effort (CPUE) during 1963-2007 and those on fish length and weight during 1965-2003 had been sporadically collected from commercial fisheries. To test hypotheses about the collapse of the pollock fisheries, we used a statistical linear model with juvenile CPUE as the response vari-able, and abiotic (e.g., water temperatures) and biotic factors [e.g., adult pollock, flatfishes (Pleuronectidae sp.), and sandfish (Arctoscopus japonicus) CPUEs] as the explanatory variables. The model results indicated that depletion of the pollock population was associated with both biotic (adult pollock and flatfishes abundance) and abiotic factors (mid-water temperatures in February and October). We further interpreted the results from ecological and biological perspectives, suggesting possible mechanisms.
한국 연근해 갈치의 자원평가 및 관리방안 연구 2 . 한국 연근해 갈치의 자원량 변동
장창익(Chang Ik Zhang),손명호(Myoung Ho Sohn) 한국수산과학회 1997 한국수산과학회지 Vol.30 No.4
Annual biomasses of the hairtail, Trichiurus lepturus, were estimated from the biomass-based cohort analysis(Zhang, 1987), using data of annual catch in weight at age during 1970-1988 in Korean waters. Annual biomass of the hairtail was peaked at about 240,000 mt in 1975, and thereafter declined with a slight fluctuation. Adult biomass showed a peak in 1978 with about 55,000 mt. However, it has continuously decreased until 1980 to the level of 9,000 mt and remained at this level till 1988. Age compositions of the hairtail in the 1980s differed greatly from those in the 1970s. The proportions of older hairtail(>4 years) were very low in the 1980s and even the biomasses of young hairtail(1-3 years) were at a low level in the 1980s compared with the level in 1970s. The 1973 and 1974 year classes appeared to be relatively dominant. The mean value of instantaneous rate of fishing mortality(F) in the 1980s was significantly different from that of the 1970s(P<0.05). Recruitment of the hairtail exhibited a similar trend with stock biomass until 1974, indicating the density-dependent Ricker curve.