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 پایگاه استنادی علوم جهان اسلام (ISC)

پایگاه اطلاعات جهاد دانشگاهی (SID) 

بانک نشریات کشور (مگیران)




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:: Volume 22, Issue 1 (2023) ::
IJFS 2023, 22 Back to browse issues page
Research Article: Feeding habits of juvenile Parrotfish, Oplegnathus fasciatus (Temminck and Schlegel, 1844), in the coastal waters of Gijang, Korea
D.Y. Kang , G.Ch. Seong , D.G. Kim , S. Jin , Y.J. Shin , G.W. Baeck *
Gyeongsang National University , gwbaeck@gnu.ac.kr
Abstract:   (1003 Views)
The juvenile Oplegnathus fasciatus were collected off the Gijang, Korea coast. A total of 203 juvenile O. fasciatus were examined, and the range of total length (TL) was 7.9-31.0 mm. The most important prey component of O. fasciatus was Copepods, with 75.0% in IRI (index of relative importance) index. Among Copepods, Paracalanus parvus s.l. in the Calanoida was the most significant dietary component. Cladocera was the second important prey component. Pisces, Amphipoda, Decapoda, and the other preys accounted for less than 1.8% of the diet by IRI index. The feeding strategy showed that O. fasciatus held a specialist niche with a considerable individual specialization. The result of analysis in ontogenetic changes was significantly exhibited among size classes. The proportion of Copepods decreased as increasing in body size, whereas the consumption of Cladocera, Pisces, Amphipoda, and Decapoda increased gradually. As body size increased, both the mean numbers of prey per gut (mN/Gut) and the mean volume of prey per gut (mV/Gut) constantly increased.
Keywords: Parrotfish, Oplegnathus fasciatus, Feeding habits, Juvenile fish, Juvenile feeding
Full-Text [PDF 468 kb]   (461 Downloads)    
Type of Study: Orginal research papers | Subject: Ecology
Received: 2022/09/6 | Accepted: 2023/01/28 | Published: 2023/04/9
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Kang D, Seong G, Kim D, Jin S, Shin Y, Baeck G. Research Article: Feeding habits of juvenile Parrotfish, Oplegnathus fasciatus (Temminck and Schlegel, 1844), in the coastal waters of Gijang, Korea. IJFS 2023; 22 (1) :1-12
URL: http://jifro.ir/article-1-5144-en.html

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Volume 22, Issue 1 (2023) Back to browse issues page
Iranian Journal of Fisheries Sciences Iranian Journal of Fisheries Sciences
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