• 한국해양학회지
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• 제25권2호
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• pp.96-105
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• 1990

蝗害 中東部 沿岸域의 仔稚漁 群集의 季節 變化을 연구하기 위하여 1985년 7월부 터 1986년 6월까지 매월, 천수만에서 금강 하구 부근에 이르는 13개 정점에서 Bongo 네트를 이용하여 仔稚漁를 채집하였다. 仔稚漁는 45개 분류군이 출현하였는데, 개체수 에서는 흰베도라치가 가장 많이 출현하여 전체 출현량의 45.2%를 차지하였으며, 멸치 가 27.5%, 밴댕이가 10.6%, 돛양태류가 4.6%, 정보리멸이 3.0%, 날개망둑이 1.9%, 줄 망둑이 1.8%를 차지하여 이들 7개 분류군이 전체 출현량의 94.6%를 차지하였다. 월별 출현량은 7월과 1월에 두 번의 절정을 보였으며, 흰 베도라치가 우점하는 1월부터 4월 사이에는 종다양성이 매우 낮았다.

• 수산해양기술연구
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• 제55권3호
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• pp.243-251
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• 2019

The ichthyoplanktons were sampled by Bongo net to study the distribution of the eggs and larvae in the West coastal waters of Korea during the study period (February, May, August and October of 2017). Collected fish eggs were divided into Engraulis japonicus and unidentified species. The most dominant species, Engraulis japonicus accounted for 79.52% of the total fish egg, which was followed by unidentified species (20.48%). The total of 36 taxa in fish larvae were identified based on morphological and molecular characteristics. Fish larvae were dominant by Gobiidae species. 48.30% of the total catch in abundance, which was followed by Engraulis japonicus (31.86%). These two taxa composed 80.16% of the total collected fish larvae. The seasonal diversity index of species from the collected fish larvae in the West coastal waters in 2017 was 0.625-1.883 and the evenness index was 0.380-0.865. In addition, dominance index was 0.618-0.920 and richness was 0.573-3.189.

• 수산해양기술연구
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• 제58권4호
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• pp.326-333
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• 2022

To provide information needed for managing fish resources and protecting the ecosystem of Cheonsu Bay, bimonthly variations in species composition and abundance of fish eggs and larvae were investigated. The samples were collected by using bongo net at three different stations from February 2020 to December 2021. Fish eggs were divided into Engrualis japonicas and unidentified eggs, of which Engragulis japonicus accounted for 85.6% of the total eggs collected. A total of 21 species representing 17 families and 6 orders were collected. The three dominant species were Gobiidae spp, Thryssa hamiltonii and E. japonicus and these three species accounted for 74.1% in the total number of individuals. The number of species was highest in August, 2020 and lowest in February, 2020 and 2021; the number of individuals was highest in August, 2020 and lowest in February, 2020. Temporal changes in the abundances of pelagic eggs and larval fishes corresponded with temperature.

• Ocean and Polar Research
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• 제26권4호
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• pp.607-618
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• 2004

Zooplankton community was surveyed during the Seventh Korea Antarctic Research Program, from 28 December 1993 to 11 January 1994. Zooplankton samples were collected at 40 stations from the waters around the South Shetland Islands with a Bongo net and a MOCNESS. A total of 14 taxa of zooplankton were identified. Zooplankton abundances varied at each station as well as with the sampling gears. Zooplankton abundances were higher in the Western Weddell Sea than those in the Bransfield strait. Zooplankton collected with MOCNESS showed a different vertical distribution depending on its depths at selected stations. Copepods were the major components of zooplankton contributing 72.84% (mesh size $333{\mu}m$) and 68.36% (mesh size $505{\mu}m$) of total zooplankton abundance from the Bongo samples. Salps were the second most abundant group comprising 7.92% $(333{\mu}m)$ and 11.99% $(505{\mu}m)$ of total zooplankton abundance. Euphausiids, chaetognaths, polychaetes, pteropods and ostracods occurred more than 1% of total zooplankton. Copepods were not abundant at stations salps and euphausiids were dominant. Salpa thompsoni, Euphausia superba, Calanoides acutus, Metridia gerlachei and Calanus propinquus were dominant depending on the stations. The hierarchical UPGMA cluster analysis of dissimilarities between sampling stations is displayed with clusters identified similar habitats. Copepods rarely appeared in the clusters 4 and 5, and they appeared a ffw in the cluster 3 (or salps were numerous), while copepods were abundant in the clusters 1 and 2. As in the results of cluster analysis, the distributions of dominant taxa have a well identified correspondence to the geological positions included physical factors.

• 한국어류학회지
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• 제12권2호
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• pp.124-128
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• 2000

푸렁통구멍 자치어 시료는 1997~1999년 제주도 연안에서 봉고네트와 트롤형자치어네트로 총 45개체 채집되었으며, 체장 범위는 2.7~8.7 mm였다. 이 종은 제주도 연안과 대한해협에 분포하였다. 성장에 따른 푸렁통구멍 자치어의 체형변화는 다음과 같다. 1) 지느러미의 여린줄기는 체장이 약 5 mm부터 나타나기 시작하며 체장이 약 8.7 mm에서 정수에 달하였다. 2) 흑색 소포의 변화는 체장 3 mm 전 후에서 급격하게 일어났다. 3) 미부봉상골 위아래에 일렬로 된 혹색소포는 체장 4.3 mm 이하의 크기에서 나타났다. 4) 꼬리자루에 흑색소포는 체장 6 mm부터 나타나기 시작하였다.

• 한국해양학회지
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• 제22권4호
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• pp.236-245
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• 1987

천수만에서 금강 하구에 이르는 13개 정점에서 1985년 7월부터 1986년 6월에 걸쳐 부유성 난과 자치어를 채집하였는데, 이중 부유성 난은 19개 분류군으로, 자치어는 8 月 28 科에 속하는 45개 분류군으로 동정 되었다. 본 연구에서는 부유성난과 자치어의 동정을 위한 검색표 작성의 일환으로 부유성난에 대해서는 유구의 수, 난의 형태, 난막의 돌기, 난경, 유구경 등의 형질에 따라 19개 분류군의 검색표를 작성하였으며, 자치어에 대해서는 體形, 肛門의 위치 色素胞의 배열 등의 형태적인 형질에 따라 우선 科 수준의 檢索表를 작성하였다.

• 해양환경안전학회지
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• 제22권1호
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• pp.11-19
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• 2016

한국 주변 해역에서 수온과 살오징어 유생 분포와의 관계를 파악하기 위해 서해 중부(2013년 8월), 동중국해 북부(2013년 8월), 동해 남부연안(2013년 6월, 11월, 2014년 4월, 5월, 6월, 8월, 9월) 등 3개 해역에서 유생 채집과 CTD 조사를 하였다. 유생 채집은 망구 직경 60 cm, 망목 $333{\mu}m$의 Bongo net를 조사선 속도 2-3 knot에 맞춰 저층 부근에서 표층까지 경사채집(oblique tow) 하였다. 서해 중부에서는 오징어 유생이 발견되지 않았으며, 동중국해 북부에서는 외투장 1.0 mm의 1 개체가 발견되었다. 동해에서는 총 39 개체의 유생이 발견되었으며, 외투장 범위는 1.9-13.5 mm이다. 2013년 8월 서해 중부의 표층 수온은 약 $30^{\circ}C$인 반면 30 m 이하에서는 $10^{\circ}C$ 이하로 낮게 나타나 살오징어 유생의 생존에 적합한 수온($15-24^{\circ}C$)의 공간적 분포가 좁았다. 동중국해 북부의 표층 수온은 $31^{\circ}C$에 이르는 고온이며, 50 m 이하 수심에서도 $20^{\circ}C$ 이상의 수온이 분포하여 비교적 깊은 수심에 유생이 분포하는 것으로 추정되었다. 동해 남부 연안에서는 관측기간 동안 유생의 생존에 적합한 수온이 75 m보다 얕았다.

• 수산해양교육연구
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• 제25권4호
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• pp.991-997
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• 2013

Distribution and occurrence of swimming crab, Portunus trituberculatus larvae were investigated in the mid-western coast of Korea in the Yellow Sea. P. trituberculatus larvae were collected in July and August from 2010 to 2012. Bongo net with 303 mesh was deployed once with a double oblique tow. Zoea I (ZI) densities were highest in all sampling months. Then densities of later larval stages decreased dramatically. In general, larval densities at the stations in northern parts and coastal areas were higher than those at the southern and offshore area. Because egg bearing seasons of P. trituberculatus in the study area are between April and August, larval densities, particularly, of ZI may be underestimated. Considering higher densities of ZI and lower ones of later stages, larvae may be transported to growing area and returned to the parental populations. Larval densities and sea surface temperature were not correlated.

• 한국수산과학회지
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• 제50권6호
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• pp.829-836
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• 2017

This study investigated the species composition and abundance of floating fish eggs to determine the timing and location of spawning of fish inhabiting the coastal waters of Sagye, Jejudo Island. Eggs were collected with a Bongo net bimonthly from May 2009 to February 2010. Identifications were based on nucleotide sequences of the mitochondrial cytochrome c oxidase subunit I (COI) gene. Eggs were determined to belong to 43 distinct taxa, 35 of which were identified to the species level. The assemblage spanned eight orders, 23 families, and 32 genera. The number of taxa collected varied from month to month, with 14 taxa (12 species) found in June 2009, 11 taxa (10 species) in October 2009, 10 taxa (nine species) each in August 2009 and February 2010, eight taxa (six species) in April 2009, and five taxa (four species) in December 2009. Five abundant species (Branchiostegus japonicus, Engraulis japonicus, Pseudolabrus sieboldi, Goniistius zonatus, and Halichoeres tenuispinis) together represented 52.8% of the total number of eggs collected during the study.

• 한국수산과학회지
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• 제45권6호
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• pp.716-722
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• 2012

The larval occurrence of the red snow crab Chionoecetes japonicus was investigated near Dokdo in the East Sea of Korea, and the larval timing of the genus Chionoecetes in world oceans was reviewed. C. japonicus larvae were collected seasonally at 12 stations in February, May, August, and November in 2011. A Bongo net with a 303 mesh was deployed with a double oblique tow. Larvae appeared from February to August, but no larvae were found in November. Zoea I occurred at nine stations with a few zoea II in February, and were found until August. The larval densities in February were high near the northern. In May, megalopa were found at eight stations with a few zoea II. No larvae were caught in November. The larval abundance in the research area peaked in February. Overall, the larval duration of the genus Chionoecetes in the world's oceans persisted for a long time, and Chionoecetes larvae occurred during the warm season in each area. The cold temperature at the sea bottom, where gravid females are found, may prolong larval production along the distribution range of the genus Chionoecetes.