• 한국어류학회지
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• 제21권3호
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• pp.200-207
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• 2009

도입시기의 차이에 따른 배스의 먹이생물을 비교하기 위해 배스 유입 후 약 20년이 지난 옥정호와 약 10년이 지난 용담호에서 2007년 3월부터 2009년 3월까지 배스를 채집한 후 먹이생물을 분석하였다. 두 조사지점의 먹이생물을 비교한 결과 옥정호 배스의 경우 어류가, 용담호의 경우 십각류가 가장 중요한 먹이생물임을 확인하였다. 두 조사지점 사이에서 나타난 십각류의 섭식 차이는 옥정호에 분포하는 십각류의 분포밀도가 용담호에 비해 낮음을 의미하는 것이며, 이러한 십각류의 분포 밀도 감소는 배스의 섭식활동에 의한 것으로 판단되었다. 한편, 용담호에서는 2007년에 비해 2008년 십각류의 섭식 비율이 감소하고 어류의 섭식 비율이 증가하였는데, 이 또한 옥정호에서 보여진 바와 같이, 배스의 섭식활동과 관련될 것으로 사료되었다.

• 한국수산과학회지
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• 제30권5호
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• pp.719-729
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• 1997

눈다랑어와 황다랑어의 먹이의 종류와 섭이 습성을 비교하기 위하여 서부 열대 태평양에서 연승어업으로 어획된 이들 다랑어의 위내용물을 조사하였다. 눈다랑어와 황다랑어의 먹이는 주로 어류, 두족류, 갑각류이었다. 이들 두 종의 다랑어에서 동정된 먹이생물의 총 종수는 어류가 15종, 갑각류 6종 그리고 두족류가 1종이었으며 그 중 가장 중요한 먹이는 샛비늘치류인 Myctophum sp였다. 황다랑어와 눈다랑어의 먹이를 분석해본 결과 먹이의 종류에 있어서는 두 종간에 큰 차이가 없었으며 이것으로 보아 같은 해역에 서식하는 다랑어류는 먹이 습성이 유사함을 알 수 있었다. 그러나, 먹이 가운데 몇몇 종 (Myctophidae, Alepisauridae, Oplophoridae, Gammaridae, and Onychoteuthidae)의 경우 그 중요도에 있어서 두 다랑어간에 현저한 차이를 보였다.

• 한국수산과학회지
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• 제55권2호
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• pp.224-228
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• 2022

The feeding habits of the Pacific herring Clupea pallasii were examined based on 333 specimens collected from the coastal waters of the East Sea of Korea. Sampling was conducted in April, June, and September 2019 and February 2020. The total length of the C. pallasii ranged from 11.9 cm to 37.7 cm. Euphausiids (93.0%, index of relative importance, IRI), especially Euphausia, comprised the primary diet of the pacific herring, in addition to amphipods, copepods, and fishes. The dietary composition of C. pallasii showed non-significant differences by size. As body size of C. pallasii increased, the mean number of preys per stomach (mN/ST) and the mean weight of preys per stomach (mW/ST) tended to increase.

• 한국수산과학회지
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• 제50권5호
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• pp.616-620
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• 2017

The feeding habits of post-larval Yatabe blenny Parablennius yatabei (2.0-9.8 mm SL) were examined on the basis of 158 individuals collected from June to October in the coastal waters of eastern Jinhae Bay, South Korea. Based on the index of relative importance (IRI), post-larval P. yatabei fed 94.4% on copepods and 5.6% on tintinnids. The preference of post-larval P. yatabei for copepods to other prey items results from ontogenetic changes. The dietary percentage of copepods increased as fish size increased and tintinnids became less important. The feeding rate of post-larval P. yatabei was consistent at all times of day.

• 한국수산과학회지
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• 제50권5호
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• pp.541-546
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• 2017

Feeding habits of dolphinfish Coryphaena hippurus, were analyzed. Fish samples were collected by using a purse seine, fishing and set net in the southern sea of Korea from January to December 2015. The size of C. hippurus ranged from 23.8 to 127.4 cm in fork length. The species with the highest percent index of relative importance (%IRI; the most important prey taxa) in the diets of C. hippurus were teleosts and cephalopod, including Engraulis japonicus, Thamnaconus modestus and Trachurus japonicus, Loligo edulis was the most frequently consumed cephalopods. Coryphaena hippurus also ate small amounts of amphipods and carid shrimp. The dietary compositions of C. hippurus was not significantly different among size classes or seasons (ANOSIM, P>0.05). As body size of C. hippurus increased the mean number of prey per stomach (mN/ST) tended to decrease, but the opposite trend was evident for mean weight of prey per stomach (mW/ST). The mN/ST and mW/ST also significantly varied with season (one-way ANOVA, P<0.05).

• 한국수산과학회지
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• 제43권3호
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• pp.254-261
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• 2010

The feeding habits of six shark species, Scyliorhinus torazame, Mustelus manazo, Squalus megalops, Isurus oxyrinchus, Alopias pelagicus, and Carcharhinus plumbeus were studied using the stomach contents of 463 specimens collected between January and February 2007 in the southern sea of Korea. They consumed different prey items. S. torazame preyed mainly crustaceans, and M. manazo on crustaceans and fishes. S. megalops, I. oxyrinchus, A. pelagicus, and C. plumbeus consumed predominately fishes. Non-metric multi-dimensional scaling (NMDS) ordination plots emphasized that dietary similarities separated thesix shark species into three trophic groups based on similarities in percentage Index of Relative Importance (%IRI): Group I (crustacean feeders), Group II (fish and crustacean feeders), and Group III (fish feeders).

• 한국수산과학회지
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• 제50권6호
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• pp.818-823
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• 2017

The diet composition of juvenile gold-eye rockfish, Sebastes thompsoni (40-50 mm SL), was examined based on 121 individuals collected in the Yellow Sea Bottom Cold Water in August 2016. The Yellow Sea Bottom Cold Water is characterized a by water mass of <$10.0^{\circ}C$ and 33 psu. The juvenile gold-eye rockfish fed on Amphipods [57.3% index of relative importance (IRI)] and Euphausiacea (32.9%). Most of the point in the prey-specific abundance plot indicated a high between-phenotype component (BPC).

• 수산해양기술연구
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• 제50권2호
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• pp.139-146
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• 2014

Feeding habits of white croacker, Pennahia argentata, were analyzed by using the stomach contents of 153 specimens caught by bottom trawl from May 2011 to March 2012 in the Sejon island, Korea. To know feeding habits of the white croacker, P. argentata, a species composition and it's fluctuation were analyzed based on growth. White croacker, P. argentata caught in the area composes 15 species. The most species in an number of the prey was Macrura which was occupied at 66.4% from whole prey, the second most species was Pisces which was occupied at 20.3%. The most species in an wet-weight of the prey was Pisces which was 49.3% out of the whole specimens. The second most species was Macrura which was 43.3%. The frequency occurrence of the prey was Macrura which was 68.6%, the next one was Pisces which was 28.8%. The highest Index of Relative Importance (IRI) of the prey was Macrura which was 78.2%, the next one was Pisces which was 28.8%. A number of the prey per specimen of small, middle and large class were 1.3, 1.5, 1.7, respectively. A wet weight of the prey per specimen of small, middle and large class were 0.2, 0.6, 0.2 g, respectively.

• 한국수산과학회지
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• 제55권3호
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• pp.374-378
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• 2022

The feeding habits of the Glowbelly Acropoma japonicum were examined based on 849 specimens collected from the coastal waters of the South Sea of Korea. The total length (TL) of these specimens ranged from 2.6 to 13.0 cm. A. japonicum fed majorly on Euphausia pacifica (Euphausiacea, % index of relative importance; IRI, 51.9). However with growth, its diet shifted from copepoda to euphausiacea. Overall, as the body size of A. japonicum increased, the mean weight of prey within the stomach (mW/ST) increased.

• 한국수산과학회지
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• 제52권4호
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• pp.430-436
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• 2019

The diet of Glyptocephalus stelleri was studied using 475 specimens collected in the coastal waters of the East Sea of Korea. The specimens ranged from 6.8 to 43.4 cm in total length (TL). G. stelleri was a crustacean feeder that consumed mainly euphausiids [percent index of relative importance (%IRI)=63.7%]. Polychaetes were the second largest prey component. The diet also included small quantities of bivalves, copepods, amphipods and shrimps. Individuals smaller than 15 cm TL fed mainly on euphausiids. The proportion of euphausiids decreased as body size increased, whereas the consumption of polychaetes increased gradually.