Diet Composition of Whitespotted Conger, Conger myriaster in the Coastal Waters of Geoje Island, Korea

AbstractFeeding activity and diet composition of round goby were investigated in the south-eastern Baltic Sea, the Lithuanian coastal waters during May-October 2012 in order to determine main feeding objects and seasonal periods when native fauna could be most affected by predation of this highly invasive species. In total, prey represented by 18 taxa was found in the gut contents of dissected fish. Feeding activity of round goby varied depending on the body size, sex and stage of the reproduction period. The gut contents of < 50 mm specimens were dominated by zooplanktonic and meiobenthic organisms, whereas larger individuals (50–99 mm) shifted to amphipods and mollusks. Individuals of the intermediate 100-200 mm length had a variable diet, changing depending on the season; in spring they mostly preyed on Macoma balthica, in summer − on polychaetes, while in autumn the contribution of Mytilus trossulus and fish considerably increased in their diet. Diet composition of individuals ≥ 200 mm was relatively constant in the course of the study with substantial preference to M. balthica. These findings imply that benthic fauna, particularly a newly settled generation of epibenthic mollusks in autumn is under strong predatory pressure of the round goby.

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Entrapment and transport of foreign material in the spleen and kidney of Japanese conger Conger myriaster

Fisheries Science ◽

10.1046/j.1444-2906.2002.00558.x ◽

2002 ◽

Vol 68 (6) ◽

pp. 1219-1225 ◽

Cited By ~ 4

Author(s):

TOYOKAZU FURUKAWA ◽

OSAMU NAKAMURA ◽

YUKIYA SUZUKI ◽

SHIZUO ATSUTA ◽

HIROAKI NAKAMURA ◽

...

Keyword(s):

Foreign Material ◽

Conger Myriaster ◽

Conger Conger

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Diet composition of juvenile Trachurus japonicus in the coastal waters of Geumodo Yeosu, Korea

Journal of the Korean society of Fisheries Technology ◽

10.3796/ksft.2015.51.4.637 ◽

2015 ◽

Vol 51 (4) ◽

pp. 637-643 ◽

Cited By ~ 1

Author(s):

Heeyong KIM ◽

Yu Na LIM ◽

Jae Mook JEONG ◽

Hyeon Ji KIM ◽

Gun Wook BAECK

Keyword(s):

Coastal Waters ◽

Diet Composition ◽

Trachurus Japonicus

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Diet composition of the sandfish, Arctoscopus japonicus in the coastal waters of East Sea, Korea

Journal of the Korean Society of Fisheries Technology ◽

10.3796/ksfot.2019.55.4.320 ◽

2019 ◽

Vol 55 (4) ◽

pp. 320-326

Author(s):

Da Yeon KANG ◽

A-Reum KO ◽

Jae Mook JEONG ◽

Gun Wook BAECK

Keyword(s):

Coastal Waters ◽

Diet Composition ◽

East Sea

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Diet composition and feeding strategy of John Dory, Zeus faber, in the coastal waters of Korea

Journal of Ecology and Environment ◽

10.1186/s41610-020-00153-y ◽

2020 ◽

Vol 44 (1) ◽

Author(s):

Han Ju Kim ◽

Hyeong-Gi Kim ◽

Chul-Woong Oh

Keyword(s):

Coastal Waters ◽

Diet Composition ◽

Feeding Strategy ◽

Zeus Faber

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Oogenesis in the common Japanese conger Conger myriaster

Fisheries Science ◽

10.1046/j.1444-2906.2003.00604.x ◽

2003 ◽

Vol 69 (1) ◽

pp. 181-188 ◽

Cited By ~ 15

Author(s):

TOMOKO UTOH ◽

NORIYUKI HORIE ◽

AKIHIRO OKAMURA ◽

YOSHIAKI YAMADA ◽

SATORU TANAKA ◽

...

Keyword(s):

Conger Myriaster ◽

The Common ◽

Conger Conger

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Diet composition and some observations on the feeding ecology of the rhizostome Rhopilema nomadica in Israeli coastal waters

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315420000697 ◽

2020 ◽

Vol 100 (5) ◽

pp. 681-689

Author(s):

Z. Kuplik ◽

D. L. Angel

Keyword(s):

Ecosystem Services ◽

Feeding Ecology ◽

Coastal Waters ◽

Diet Composition ◽

Gut Contents ◽

Bell Diameter ◽

Marine Food Web ◽

Marine Food ◽

Potential Impact ◽

Predatory Pressure

AbstractSince the mid-1980s, swarms of the rhizostome Rhopilema nomadica have been an annual phenomenon in Israeli Mediterranean coastal waters during the summer months. Despite its annual prominence and the potential impact on food webs and ecosystem services, studies concerning its feeding ecology and its interactions with other biota in the marine food web have not been conducted. During summer 2015 gut contents of 41 R. nomadica were analysed as well as ambient plankton assemblages. More than 60% of the medusae diet was found to consist of microzooplankton <150 μm. Size correlations revealed that larger R. nomadica consumed faster swimming prey while smaller medusae relied more on the slower swimming taxa. The medusan diet reflected most of the ambient plankton taxa, but no statistically significant correlations between the relative abundance in diet and ambient plankton were found. As summer progressed, there was a gradual decrease in both mean medusa bell diameter (from 42.2–16 cm) and integrity of feeding structures. These findings suggest that R. nomadica, at least at the time of its appearance in Israeli coastal waters, may exert less predatory pressure on the plankton than we might otherwise expect.

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