• 수산해양기술연구
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• 제55권4호
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• pp.327-334
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• 2019

The feeding habits of the bighead croaker Collichthys niveatus were studied using 745 specimens collected by bottom trawl net in the West Sea, Korea, in April and October of 2016, 2017 and 2018. The size of C. niveatus ranged from 4.8 to 16.0 cm in total length. The stomach contents analysis indicated that C. niveatus consumed mainly euphausiids and copepods. C. niveatus consumed mainly euphausiids and copepods in all size classes. The dietary compositions of C. niveatus was not significantly different among size classes (One-way ANOVA, P > 0.05). As body size of C. niveatus increased, the mean weight of prey per stomach (mW/ST) tended to increase.

• 한국수산과학회지
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• 제47권1호
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• pp.79-83
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• 2014

Thirty five juveniles belonging to the genus Collichthys were collected using a bag net at Gang-wha-do, in the eastern Yellow Sea, between July and September, 2012, and identified using combined genetic and morphological methods. We sequenced 316 base pairs of mitochondrial DNA cytochrome c oxidase subunit I of 35 individuals, of which 22 individuals were identified as Collichthys niveatus (12.9-47.6 mm in SL) and 13 as Collichthys lucidus (13.4-40.3 mm SL). Morphologically, the number of occipital crests, an important taxonomic character during the adult stage, could not distinguish the two species during the juvenile stage, but the shape of the first anal fin spine clearly distinguished the two species even among juveniles.

• 한국수산과학회지
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• 제31권5호
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• pp.739-748
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• 1998

1995년 5월, 9월, 11월에 영광군 연안에서 오터트롤로 채집한 수산생물의 종조성을 파악하고, 같은 시기에 주목망에서 채집된 부영생물과 비교하여 영광 근해 수산자원의 특성을 구명하였다. 영광군 연안에서 조사기간 동안 총 73종의 수산생물이 출현하였으며, 이중어류 $63\%$, 두족류 $5\%$, 복족류 $3\%$, 게류 $14\%$, 새우류 $14\%$이었다. 개체수에서 민태 (Johnius grypotus), 그라비새우(Palaemon gravieri), 마루자주새우 (Crangon hakodatei), 참서대 (Cynoglossus joyneri), 눈강달이 (Collichthys niveatus)가 전체의 $64.4\%$를 차지하여 우점하였다. 같은 시기에 같은 정점에서 채집한 주목망에 의한 자료와 비교한 결과, 전반적으로 주목망에는 부영생물이, 오터트롤에는 저서수산생물이 우세하여 채집방법에 따른 종조성의 차이를 보였다.

• 수산해양기술연구
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• 제57권2호
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• pp.134-148
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• 2021

During the ichthyoplankton survey around the Chilsan Island (previously known as the biggest spawning ground of the Sciaenidae) in the southwestern sea of Korea from April to June in 2019 using ring nets, we collected a total of 12 individuals belonging to the family Sciaenidae. Using molecular methods, we identified five sciaenid species (Collichthys lucidus, Collichthys niveatus, Johnius grypotus, Nibea albiflora, and Pennahia argentata), and described and compared them on the basis of the preflexion larval stage. C. lucidus was well distinguished by the presence of occipital crests at preflexion stage. Although there were no occipital crests, preflexion larva of C. niveatus was distinguished by the absence of melanophore except for the upper part of the abdominal cavity. J. grypotus and N. albiflora were very similar morphologically, but were distinguished by myomere height (15.22-15.53% in J. grypotus vs. 11.66-12.78% in N. albiflora) in the percentage of notochord length, and eye diameter (32.58-33.37% in J. grypotus vs. 40.32-42.53% in N. albiflora) in the percentage of head length between specimens of similar size (J. grypotus: 3.22-3.23 mm, N. albiflora: 3.04-3.13 mm). P. argentata were distinguished by distribution of ventral caudal melanophore (one row of small spot in P. argentata vs. irregular patches on the central part of caudal in J. grypotus and N. albiflora). Comparative morphological studies using more diverse species must be conducted for more comprehensive understanding of the morphogenesis of Sciaenidae.

• 한국어류학회지
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• 제4권1호
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• pp.29-53
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• 1992

1989년부터 1992년 5월까지 우리나라 서남연안에서 채집된 한국산 민어과 Sciaenidae 어류의 분류학적 위치를 재검토하였다. 지금까지 한국산 민어과 어류는 5속(屬) 13종(種)으로 보고되어 왔으나 조사 결과 강달이속(屬) Collichthys에는 황갈달이 C. lucidus와 눈강달이 C. niveatus, 조기속(屬) Pesudosciae-na에는 부세 P. crocea와 참조기 P. polyactis, 수조기속(屬) Nibea에는 수조기 N. albiflora, 동갈민어 N. mitsukurii, 그리고 꼬마민어 N. diacanthus, 민태속(屬) Johnius에는 민태 J. grypotus, 민어속(屬) Miichthys에는 민어 M. miiuy, 백조기속(屬) Argyrosomus에는 보구치 A. argentatus, 흑조기속(屬) Atrobucca에는 흑조기 A. nibe, 라강달이속(屬) Larimichthys에는 라강달이 L. rathbunae 등 모두 8속(屬) 12종(種)으로 분류되었다. 우리나라에서 지금까지 보고되었던 종(種) 중에서 Peseudosciaena manchurica는 P. polyactis로, Nibea goma는 N. diacanthus로, Johnius belengerii는 J. grypotus로, Nibea imbricatus는 Miichthys miiuy로, Nibea argentatus는 Argyrosomus argentatus로, Nibea nibe는 Atrobucca nibe로 확인되어 모두 12종(種) 중 6종(種)의 학명이 재정리되었다. 또한 지금까지 Collichthys속(屬) 중에서 우리나라에서 가장 많이 출현한다는 C. fragilis는 C. lucidus와 동일종(種)으로 확인되었다. 아울러 이들 종(種)들의 각종 분류학적 주요 형질을 중심으로 하여 한국산 민어과 어류의 속(屬), 종(種) 검색표(檢索表)를 작성하였고, 각종(各種)들의 형태적 특징 및 계수 계측 형질을 기재하면서 한국산 민어과 어류의 분류학적 위치를 재검토하고 이들의 지리적 분포에 대하여 논의하였다.

• 한국어류학회지
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• 제21권4호
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• pp.299-306
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• 2009

Fish fauna in the eastern Yellow Sea was determined using samples collected by an otter trawl from September 1999 to November 2001. The fish consisted of 97 species belonging to 80 genera and 50 families. The major taxa were the Perciformes (40 spp.), Pleuronectiformes (17 spp.), Scorpaeniformes (11 spp.) and Clupeiformes (10 spp.). Larimichthys polyactis, Engraulis japonicus, Liparis tanakai, Pampus echinogaster, Lophius lituron and Collichthys niveatus were predominated in abundance in the study area. The composition of the fish fauna has changed during the last three decades.

• 한국수산과학회지
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• 제53권4호
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• pp.650-655
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• 2020

Chilsan-do Island, South Korea, has previously been identified as one of the biggest spawning sites of the small yellow croaker Larimichthys polyactis in the Yellow Sea. To determine whether Chilsan-do still serves as a spawning site for L. polyactis, three to five stations around Chilsan-do Island were surveyed for eggs from April to June (the main spawning season of L. polyactis) in 2019, using an RN80 net. For the first time, three L. polyactis eggs were identified at two stations, located just in front of Chilsan-do Island and between Chilsan-do and the coastline, only in May. The diameter of L. polyactis eggs (1.26-1.34 mm) was very similar to those of Collichthys niveatus (1.30-1.37 mm) and Setipinna tenuifilis (1.34-1.35 mm). During the survey period, the sea surface salinity remained constant (32.0-32.1 psu), but the sea surface temperature (SST) rapidly rose from 13.6-13.7℃ in April to 22.1℃ in May. Our findings suggest that L. polyactis still spawns near Chilsan-do Island today, but on a very small scale, and that changes in SST promote spawning of L. polyactis.

• 한국수산과학회지
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• 제53권5호
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• pp.761-772
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• 2020

In order to study about species composition and community structure of fish in the coastal water off Boryeong were investigated from January 2018 to December 2019. A total of 10,863 individuals of 87 species of 44 families were collected. The dominant species were Liparis tanakai accounted for 19.8 percent of the total with Amblychaeturichthys hexanema and Collichthys niveatus accounted for 12.4 percent and 11.0 percent of the total number. A cluster analysis based on the Bray-Curtis similarity revealed that the fish community divided into two groups, According to season. The fish species that appeared summer and autumn were mainly migratory, while the fish species that appeared in spring and winter were mainly resident species. Fish caught by stow net had a high percentage of immature fish. It presented that coastal water off Boryeong is located an important spawning and nursery for fisheries resource.

• 한국수산과학회지
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• 제30권1호
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• pp.95-104
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• 1997

한국남해에 서식하는 황아귀의 위내용물 조사를 위하여 1995년 1월부터 12월까지 어획된 어획물 518개체를 분석한 결과는 다음과 같다. 황아귀는 어류 44종, 갑각류 12종, 두족류 3종등 총 59종의 먹이생물을 섭이하였으며, 이중에서 어류가 상대중요도지수에서 $98.8\%$를 차지하여 가장 많이 섭이된 먹이분류군으로 나타났다. 우점하는 먹이생물로는 참조기, 눈강달이, 갈치, 멸치 등이었으며, 그 외 먹이생물은 소량으로 나타났다. 참조기는 거의 연중 출현하는 우점먹이종이며, 나머지 먹이생물들은 계절의 진행에 따라 간헐적으로 위내용물에 출현하였다. 황아귀는 성장하면서 섭이하는 먹이어종수 및 먹이개체수는 증가하였으며, 우점먹이종 중 눈강달이와 멸치는 황아귀의 체장이 증가하면서 섭이비율은 감소하나 상대적으로 체장이 큰 갈치는 오히려 증가하는 양상을 나타내었다.

• 수산해양기술연구
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• 제41권4호
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• pp.248-262
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• 2005

The purpose of this study was to identify the state of demersal fish resource catch by small trawlers, which live in the southern waters off Goheung. We investigated the results of catch of sample fishing vessels, and performed fishing experiments using the actual fishing operation vessels from early November in 2002 till end of October in 2003. The daily amount of catch per vessel of the 35 small trawlers selected as sample vessels was the highest in summer seasons(June and July) as 70kg and the lowest in winter seasons(January and February) as 45kg and Octopus minor occupied as 17 to 30kg nearly 30% of the total catch. Additionally the catch of Octopus minor per vessel, per dragging hour ranges 3 to 6kg, which is the highest in March and June and the low in January to February, April to May and September. In the fishing experiments using small trawler, during the study period, a total of 75 fish species were collected. The number of individuals by species consisted 58.2% in Shrimps, 17.8% in Fish, 2.3% in Cephalopod. Of these, Parapenaeopsis tenella was the highest in 29.2%, Squilla oratoria and Crangon hakodatel was 14.6% respectively and Octopus minor was 0.2% of the total number of individuals. As far as the appearance number of individuals by month was concerned, February was the highest and then May, April and June followed in order, and October showed the lowest. Additionally the monthly catch per dragging was the lowest in December to January as 20kg and the highest in July as 160kg. Specially, Octopus minor was caught throughout the year regardless of season and the catch was the highest at the period from March to June. When looking into the body mean length of dominant fishes caught, we could observe the followings; Trachurus japonicus 8.9cm, Cynoglossus robustus 10.8cm, Muraenesox cinereus 15.3cm, Setipinna taty 10.3cm, Amblchaeturichfhys hexanema 9.3 cm and Collichthys niveatus 8.9cm, most of which were in their immaturity when they were caught.