• Title/Summary/Keyword: Piscivore

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Feeding Habits of Olive Flounder (Paralichthys olivaceus) Collected from Coastal Waters off Taean, Korea (태안연안에서 서식하는 넙치 (Paralichthys olivaceus)의 식성)

  • Huh, Sung-Hoi;Lee, Dong-Jin;Choo, Hyun-Gi;Park, Joo-Myun;Baeck, Gun-Wook
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.43 no.6
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    • pp.756-759
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    • 2010
  • The feeding habits of olive flounder, Paralichthys olivaceus were studied using 126 specimens collected from coastal waters off Taean, Korea from April 2008 to March 2009. The total lengths of P. olivaceus ranged from 16.7 to 40.6 cm. P. olivaceus was a piscivore that consumed mainly fishes. The diet also included small quantities of shrimps, cephalopods, polychaetes and mysids. Although, P. olivaceus mainly consumed fishes of all size classes, some degree of change in diet composition was found; i.e. after fishes, smaller individuals fed more on shrimps, whereas larger individuals consumed more cephalopods.

Feeding Habits of Daggertooth Pike Conger Muraenesox cinereus in the Coastal Water off Goseong, Korea (경남 고성 주변해역에서 출현하는 갯장어(Muraenesox cinereus)의 식성)

  • An, Young-Su;Park, Joo-Myun;Kim, Hyeon-Ji;Baeck, Gun-Wook
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.45 no.1
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    • pp.76-81
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    • 2012
  • The feeding habits of daggertooth pike conger Muraenesox cinereus were studied using 380 specimens collected in the coastal waters off Goseong, Korea, from June to September, 2011. The M. cinereus ranged from 10.0-23.7 cm in anal length (AL). M. cinereus is a piscivore that consumes mainly fish. Engraulis japonicus was the preferred prey, but its diet also included small numbers of crabs, shrimps, cephalopods, and bivalves. The feeding strategy graphical method revealed that M. cinereus is a specialized feeder with a narrow niche width. All size classes of M. cinereus consumed fish and M. cinereus did not show significant ontogenetic changes in feeding habits. The diet overlap index between size classes was >0.96, indicating high diet similarities. The prey size increased significantly with M. cinereus size.

Feeding Habits of the Blackthroat Seaperch Doederleinia berycoides in the Southern Sea of Korea (남해안에 출현하는 눈볼대 (Doederleinia berycoides)의 식성)

  • Huh, Sung-Hoi;Oh, Hyun-Soo;Park, Joo-Myun;Baeck, Gun-Wook
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.44 no.3
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    • pp.284-289
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    • 2011
  • The feeding habits of the blackthroat seaperch Doederleinia berycoides were studied using 650 specimens collected in the Southern Sea of Korea, from January to December, 2005. The size (standard length, SL) of the specimens ranged from 6.3 to 35.2 cm. D. berycoides is a piscivore that consumes mainly teleosts such as Engraulis japonicus, Acropoma japonicum, and Myctophum nitidulum. Of the fish species Engraulis japonicus was the preferred prey. D. berycoides also eats small quantities of shrimps, amphipods, euphausiids, mysids, and crabs. D. berycoides showed ontogenetic changes in its feeding habits. Smaller individuals (5-10 cm SL) fed mainly on shrimp. The proportion of shrimp decreased with increasing fish size, and this decrease paralleled the increased consumption of fish. Fish accounted for almost all of the stomach contents of individuals larger than 15 cm SL. Cluster analysis based on the percentage dry weight (%DW) identified two size groups: group A (<15 cm SL) consumed primarily shrimp and fish; and group B (15< cm SL) preyed exclusively on fish. There was little seasonal change in the diet of D. berycoides, but shrimp constituted 41.8% of the summer diet in %W.

Feeding Habits of John Dory Zeus faber in the Coastal Waters off Gori, Korea (고리 주변해역에서 출현하는 달고기 (Zeus faber)의 식성)

  • Huh, Sung-Hoi;Park, Joo-Myun;Baeck, Gun-Wook
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.39 no.4
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    • pp.357-362
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    • 2006
  • The feeding habits of John Dory (Zeus faber) were studied by examining the stomach contents of 317 specimens collected from January 2004 to December 2005 in the coastal waters off Gori, Korea. The standard length (SL) of the specimens ranged from 12 to 42 cm. Z. faber is a piscivore and consumes mainly teleost fish such as Psenopsis anomala, Trichiurus lepturus and Conger myriaster. Its diet also includes shrimp and cephalopods. Smaller individuals (<25 cm SL) consume shrimp and small fish such as Glossanodon semifasciatus. The proportion of these prey items decreases with increasing fish size, and this decrease is paralleled by increased consumption of lager fish such as Psenopsis anomala and Trichiurus lepturus. The prey size increases with Z. faber size.

Feeding Habits of Chub Mackerel (Scomber japonicus) in the South Sea of Korea (남해에 출현하는 고등어 (Scomber japonicus)의 식성)

  • Yoon, Seong-Jong;Kim, Dae-Hyun;Baeck, Gun-Wook;Kim, Jae-Won
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.41 no.1
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    • pp.26-31
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    • 2008
  • The feeding habits of chub mackerel (Scomber japonicus) were studied based on an examination of the stomach contents of 512 specimens collected between November 2005 and October 2006 in the South Sea of Korea. The specimens ranged in fork length (FL) from 23.4-37.5 cm. Chub mackerel is a piscivore and consumes mainly Teleosts such as Engraulis japonicus. Its diet also includes amphipods, crabs, Euphausia, chaetognaths and shrimp. Smaller individuals (<26 cm FL) consume mainly crabs. The proportion of these prey items decreases with increasing fish size, and this decrease paralleles the increased consumption of fish. The prey size increases with S. japonicus size.

Diet Composition of Oriental Bonito (Sarda orientalis) in Coatal Waters of Jeju Island, Korea (제주도 주변 해역에서 채집된 줄삼치(Sarda orientalis)의 위내용물 조성)

  • Kim, Hyeon Ji;Jeong, Jae Mook
    • Korean Journal of Ichthyology
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    • v.32 no.1
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    • pp.8-13
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    • 2020
  • The feeding habits of oriental bonito (Sarda orientalis) were studied using 288 specimens collected in the coastal waters of Jeju Island, Korea from January to December 2015. Oriental bonito is pelagic piscivore that consumes mainly fishes especially Engraulis japonicus and Scomber japonicus. Its diet also includes small quantities euphausiids, amphipods and cephalopods. Oriental bonito showed ontogenetic changes in feeding habits. Although fishes were the primary food consumed by all size groups, the ratio of fishes was slightly increased as body size increase. There also was a significant relationships between mean prey number and weight according to size class and season.

Feeding Ecology of Sebastes schlegeli in the Tongyeong Marine Ranching Area (통영 바다목장해역에 서식하는 조피볼락(Sebastes schlegeli)의 식성)

  • Park, Kyeong-Dong;Kang, Yong-Joo;Huh, Sung-Hoi;Kwak, Seok-Nam;Kim, Ha-Won;Lee, Hae-Won
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.40 no.5
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    • pp.308-314
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    • 2007
  • The feeding habits of Sebastes schlegeli collected from the Tongyeong marine ranching area throughout 2002 were studied. S. schlegeli is a carnivore (piscivore), and consumed mainly fish. Its diet also included a small amount of caridean shrimps, crabs, amphipods, polychaetes, and isopods. The diet of S. schlegeli underwent size-related changes. Small individuals (standard length (SL)<6 cm) fed mainly on fishes, caridean shrimps, and amphipods, and the proportion of fish increased with SL. Large individuals (SL>20 cm) ate fish predominately. The diet of S. schlegeli changes seasonally, and caridean shrimps were consumed mainly from May to July. The dietary breadth index of S. schlegeli varied with SL and season.

Feeding Habits of John dory, $Zeus$ $faber$ in the Coastal Waters of Geomun-do, Korea (거문도 주변해역에서 출현하는 달고기($Zeus$ $faber$)의 식성)

  • An, Young-Su;Park, Joo-Myun;Ye, Sang-Jin;Jeong, Jae-Mook;Baeck, Gun-Wook
    • Korean Journal of Ichthyology
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    • v.24 no.1
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    • pp.20-26
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    • 2012
  • The feeding habits of john dory, $Zeus$ $faber$, were studied using 462 specimens collected in the coastal waters of Geomun-do, Korea. The size of the specimens ranged from 7.8 to 40.2cm in standard length (SL). $Z.$ $faber$ was a piscivore that consumes mainly teleosts such as $Trichiurus$ $lepturus$, $Scomber$ $japonicus$, $Callanthias$ $japonicus$ and $Trachurus$ $japonicus$. Of the fish species $T.$ $lepturus$ was the most preferred prey. Its diet also includes cephalopods, shrimps and euphausia. Smaller individuals (<15 cm SL) fed mainly on fishes and cephalopods. The proportion of cephalopods decreased as body size increased, whereas the consumption of fishes gradually increased. Fishes accounted for almost stomach contents of larger individuals (more than 15 cm SL).

Feeding Habits of Scorpaena neglecta in the Coastal Waters off Busan (부산 주변해역에서 출현하는 살살치(Scorpaena neglecta)의 식성)

  • Huh, Sung-Hoi;Park, Joo Myun;Nam, Ki Mun;Park, Se Chang;Park, Chan Il;Baeck, Gun Wook
    • Korean Journal of Ichthyology
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    • v.20 no.2
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    • pp.117-122
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    • 2008
  • The feeding habits of Scorpaena neglecta were studied based on an examination of the stomach contents of 478 specimens collected between January and December 2006 in the Coastal Waters off Busan. The specimens ranged from 9.0 to 23.5 cm in Standard length (SL). S. neglecta is a piscivore and consumes mainly teleosts such as Acropoma japonicum, Coelorinchus multispinulosus, Chaeturichthys stigmatias. Its diet also includes crabs, shrimps, cephalopod and stomatopod. Smaller individuals (<16 cm SL) consume mainly crabs and shrimps. The proportion of these prey items (crabs and shrimps) decreases with increasing fish size, and this decrease parallels the increased consumption of fish. The mean prey size sharply increases between 12 and 20 cm SL of S. neglecta size.

Feeding Habits of Scorpion Fish, Sebastiscus marmoratus, in the Coastal Waters of Tongyeong, Korea (통영 연안에 출현하는 쏨뱅이 (Sebastiscus marmoratus)의 식성)

  • Baeck, Gun-Wook;Yeo, Yeong-Mi;Jeong, Jae-Mook;Park, Joo-Myun;Huh, Sung-Hoi
    • Korean Journal of Ichthyology
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    • v.23 no.2
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    • pp.128-134
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    • 2011
  • The feeding habits of scorpion fish, Sebastiscus marmoratus, were studied using 324 specimens collected in the coastal waters of Tongyeong, from January to December, 2009. The size of the specimens ranged from 9.8 to 30.1 cm in standard length (SL). S. marmoratusis was a piscivore that consumed mainly teleosts such as Engraulis japonicus, Clupea pallasi and gobid fishes. Of the fish species Engraulis japonicus was the most preferred prey. Its diet also includes shrimps and crabs. Hermit crabs, polychaetes, bivalves and euphausia were minor preys. Smaller individuals (<13 cm SL) fed mainly on shrimps, crabs and fishes. The proportion of shrimps and crabs decreased as body size increased, whereas the consumption of fishes gradually increased. Fishes accounted for almost stomach contents of larger individuals (more than 19 cm SL). Seasonal changes in the S. marmoratusis diet were significant. Fishes was most common prey during summer, autumn and winter, whereas crabs and shrimps were mainly consumed during spring.