• 한국어업기술학회:학술대회논문집
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• 한국어업기술학회 2001년도 춘계 수산관련학회 공동학술대회발표요지집
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• pp.346-347
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• 2001

털게, Erimacrus isenbeckii는 갑각류(Crustaces, Decapods)중에서 대형 단미류(Brachyura)로서 우리나라 영일만, 동해북부, 사할린, 오호츠크해, 알라스카연안에 분포하는 유용종으로 우리나라에서는 중요한 어업대상종으로 자원관리가 필요하다. 최근에는 활어로서의 수요량이 급증하는 반면 자원량이 감소되어 공급량을 충당하기 어려운 실정이므로, 인공종묘생산에 의한 대량생산을 하기위해 부화후 유생의 먹이생물을 파악하여 대량생산시 양식기술을 확립하기 위한 자료를 마련하고자 조사하였다. (중략)

• 한국수산과학회지
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• 제43권1호
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• pp.69-77
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• 2010

We examined shrimp and bycatch species composition in the shrimp beam trawl fishery off Wan-do, Korea(in the major or fishing ground)from December 2004 to November 2005. We observed a total of 103, 072 individuals in 96 taxa. By densities of individuals, 96.97% were shrimps, 1.20% decapods, 1.10% fish, 0.30% cephalopods and 0.43% other species. By catch weight, 57.29% were shrimps, 26.33% fish, 6.82% decapods, 4.64% cephalopods and 4.92% other species. In spring, the dominant bycatch species by biomass were Okamejei kenojei, Lophiomus setigerus, and Charybdis bimaculata. In summer, the dominant species were Charybdis bimaculata, Muraenesox cinereus, and Paralichlhys olivaceus. In autumn, dominants were Okamejei kenojei, Conger myriasler, and Sefipinna tenuifilis, and in winter they were Okamjei kenojei, Chaeturichthys stigmatias, and Sillago japonica. Bycatch species composition and individual species abundances differed significantly among seasons, probably indicating that variations were related to the life history characteristics of bycatch species. The diversity index was highest in October (2.797) and lowest in July (1.012). The July dominance index (0.569) was much higher than in other months; evenness was highest in September (0.856) and lowest in July (0.374). During the study period, the bycatch-to-shrimp ratio of this fishery varied from 0.063 in February 2005 to 11.031 in May 2005, with a mean of 3.363 These temporal variations may be linked 10 variations in reproductive behaviors and migration patterns of the marine animals sampled.

• 수산해양기술연구
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• 제51권4호
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• pp.637-643
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• 2015

The diet composition of juvenile Trachurus japonicus were studied using 195 specimens collected from 2013 (May, June, July, and September) to 2014 (May, June, and July) in the coastal waters of Geumodo, Yeosu, Korea. The size of juvenile T. japonicus ranged from 4.3 to 15.2 cm in body length (BL). Juvenile T. japonicus was carnivorous and crustaceans predators that consumes mainly consumed copepods. Its diet also included small quantities of decapods, cirripedians, nematods, chaetognathans, fishes, amphipods, cumaceans, ostracods and euphausiids. The graphical method for feeding strategy revealed that juvenile T. japonicus is an opportunistic and specialized predator on copepods, especially Corycaeus. affinis, and showed narrow niche width. Juvenile T. japonicus showed ontogenetic diet change. Small size group individuals (4.3-8.0 cm BL) mainly consumed copepods. The portion of this prey item decreased in the large size group (8.0-15.2 cm BL), and this decrease was paralleled with increased consumption of decapods.

• 환경생물
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• 제23권3호
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• pp.250-256
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• 2005

한강 하구역에 서식하는 저서동물상에 관한 연구는 2004년 10월 4일과 2004년 10월 21일 양일에 걸쳐 모두 2회, 7개 지점에서 실시되었다. 본 조사 결과 연체동물의 이매패류 (Limnoperna fortunei 민물담치, Corbicula felnouilliana 콩재첩)와 환형 동물의 다모류 (Neanthes japonica 참갯지렁이, Nephrys caeca 북방백금갯지렁이)가 각각 2과 2종이 채집되었으며, 절지동물의 십각류(Palaemon carinicauda 밀새우, P. annandalei 실다리밀새우, P. modestus 각시흰새우, Ilyoplax deschampsi 펄콩게, Eriocheir sinensis 참게, Eriocheir leptognathus 애기참게, Sesarma dehaani 말똥게)는 모두 4과 7종이 동정 되었다. 조사결과 4종 (Limnoperna fortunei 민물담치, Neanthes japonica 참갯지렁이, Nephtys caeca 북방백금갯지렁이, P. modestus 각시흰새우)이 본 지역에서 처음으로 보고 되는 것으로 밝혀졌다.

• 한국수산과학회지
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• 제56권5호
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• pp.728-733
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• 2023

The diet composition of octopus Octopus vulgaris was studied using 392 specimens collected from January to December 2020 in the coastal waters of Yeosu, Korea. The body weight ranged from 86.4 to 3,645.4 g. The most important prey item in the diet of O. vulgaris was decapods, which constituted 43.9% in ranking index (%RI). The second largest prey item was Pisces (%RI=27.9%), and cephalopods (%RI=21.8%) constituted the third largest prey item. The average trophic level of O. vulgaris was 3.97±0.59. Ontogenetic changes were significant among size classes (<400 g, 400-800 g, ≥800 g). The small size class (<400 g) mainly fed on decapods, whereas the medium (400-800 g) and large size (≥800 g) classes mainly fed on cephalopods and Pisces, respectively. The dietary composition varied significantly with season.

• Animal Systematics, Evolution and Diversity
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• 제33권1호
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• pp.51-55
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• 2017

The continuous taxonomic study on decapods from Korean waters revealed that the alpheid shrimps collected from Jejudo Island and Busan were identified as a species belonging to the genus Arete which is an unreported genus from Korean waters. The genus Arete can be distinguished from the most similar genus Athanas by the following. The chelae are broad and oval-shaped in Arete, but in Athanas, the chelae are more or less elongated. The number of carpal segments in the 2nd pereopod is four but five, exceptionally four or six in Athanas. The epipods are present on pereopod 1 and pereopod 2 in Arete, but on pereopod 1-3, exceptionally on pereopod 1 and pereopod 2 or pereopod 1-4 in Athanas. In this paper, Arete dorsalis is reported for the first time from Korean waters. Korean Alpheidae fauna now consists of 27 species of nine genera.

• Animal Systematics, Evolution and Diversity
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• 제14권3호
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• pp.293-309
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• 1998

거제도의 십각류상을 밝히기 위한 분류학적 연구를 수행하였다. 그 결과 28과 79종이 동정되었으며, 이 가운데 새우류 9종, 집게류 7종, 게류 39종이 거제도의 십각류상에 추가되었다. 과거기록을 포함하여 총 93종의 분류목록을 마련하였으며, 기재없이 기록만 있었던 중간뿔물맞이게 (Pugettia quadridens intermedia Sakai, 1983)를 재기재 하였다. 또한 게류 64종의 분포형과 종의 출현양상을 근거로 거제도의 동물지리적 양상을 논하였다.

• 한국수산과학회지
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• 제30권3호
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• pp.413-422
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• 1997

조간대에 서식하는 왜풀망둑의 서식지 환경과 섭식생태를 파악하여 연안 생물군집의 먹이사슬에 관한 기초지식을 얻고자, 1993년 7월부터 1994년 6월까지 군산연안의 내초도에서 매월 1회씩 왜풀망둑을 채집하면서 서식지 환경을 조사하고, 위내용물 분석을 통해 섭식생태를 조사하였다. 본 조사기간 동안 조간대의 수온은 $4.5\~33.2^{\circ}C$, 석온은 $3.5\~29.1^{\circ}C$, 염분은 $21.68\~27.41\%_{\circ}$, 해수 pH는 $7.6\~8.1$, 저질 pH는 $8.5\~9.2$, 저질함수량은 $48.5\~76.2\%$ 및 저질의 유기물함량은 $1.67\~2.81\%$의 범위를 나타내었다. 왜풀망둑의 위내용물 중량비는 $1.78\%$, 위만복도도 거의 비슷한 값을 나타내었으며, 위만복도는 하루 중 오전과 오후에 각각 한 차례씩 증가하는 경향을 보였다. 왜풀망둑의 위내용물에서 출현한 먹이생물 중 개체수가 가장 많은 것은 copepods로 $54\%$의 조성비를 나타내었다. 계절별 주요 먹이생물의 출현양상은 봄에 Paracalanus parvus, 여름에 Calanus sinicus, 가을에 Acartia sp., 겨울에 Calanus sinicus 등이 가장 많이 출현하였다. 계절간 먹이생물의 중복도는 봄과 여름 사이에서만 크게 나타났고 나머지 계절 사이에서는 그다지 크지 않았다. 체장별 먹이생물의 차이는 거의 볼 수 없었으며, 체장별 주요 먹이생물의 조성을 보면, 주로 copepods, decapods, molluscs 및 cirriped larvae 등의 순으로 많이 출현하였고, 체장이 커질수록 amphipods, polychaete larvae, isopods, cumaceans 및 stomatopods등의 출현율이 점점 증가하였다. 주요 먹이생물의 중요도지수는 Calanus sinicus, Corycaeus affinis 및 Acartia sp. 등의 순이었다.

• 환경생물
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• 제33권2호
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• pp.223-229
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• 2015

Pre-monsoon dynamics of zooplankton community were investigated in the downstream of the Gagok stream flowing into the East Sea of Korea. Monthly sampling was carried out to collect zooplankters at five sites in the stream during the period between April and July 2014. Dissolved oxygen contents exceeded $7.0mg\;L^{-1}$ all the time. Water temperature was in a range of 15.7 to $24.9^{\circ}C$ and pH 7.4 to 8.8, respectively. A total of 75 taxa consisted of 36 species of rotifers, 16 species of cladocerans, 16 species of copepods, four kinds of aquatic insects, two kinds of decapods and one nematod was occurred. One species of marine copepod and one cladoceran, and one species of brackish rotifer and one copepod distributed at the station located in the stream mouth. Zooplankton abundance showed to vary from 42 to 4202 individuals $m^{-3}$ due to the explosion of aquatic insects and Alona sp. at site 2 located in the downstream in April. Heavy rainfall during the monsoon period seems to decrease the zooplankton abundance caused by diffusion and drifting to the sea. Species diversity indices were generally high between 1.2~2.3 and were recorded to be high at the downstream throughout the study period. With the zooplankton dynamics, the influence of the input of sea waters into the stream seemed to be confined to some hundred meters of the stream mouth facing the East Sea.

• 한국지구과학회지
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• 제39권1호
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• pp.23-45
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• 2018

Moderately diverse, but very abundant trace fossils are found from the Late Pleistocene deposits of Jeju Island, Korea. Vertical I-, Y- and U-shaped domichnia of annelids or decapods are, over 2500, extremely abundant, 3D network domichnia of callianassids are, over 200, very abundant, and small sinuous trails of nematode repichnia are, over 50, abundant in number. Horizontal trails attributable to polychaete or worm-like animals are, less than 50, common, but horizontal spreiten burrows, fish traces and crab trackways are, less than 10, rare in occurrence. Of these trace fossils, Taenidium barretti, Undichna britannica and Undichna unisulca represent the first record from the Pleistocene in Asia. Psilonichnus upsilon is the second record in Asia. Crab trackways probably produced by underwater punting gait of sideway walking crabs may represent the first record in the world. In addition, diverse and very abundant footprints of more than 500 hominids, more than 200 birds and more than 1000 mammals are closely associated with these invertebrate trace fossils. Trace fossil assemblage integrated with sedimentary facies is interpreted to have been formed in the marginal marine foreshore to backshore environment corresponding to the Psilonichnus and Skolithos ichnofacies.