Research Article: Feeding habits of juvenile Parrotfish, Oplegnathus fasciatus (Temminck and Schlegel, ۱۸۴۴), in the coastal waters of Gijang, Korea

D.Y. Kang; G.Ch. Seong; D.G. Kim; S. Jin; Y.J. Shin; G.W. Baeck

Research Article: Feeding habits of juvenile Parrotfish, Oplegnathus fasciatus (Temminck and Schlegel, ۱۸۴۴), in the coastal waters of Gijang, Korea

محل انتشار: مجله علوم شیلات ایران، دوره: 22، شماره: 1

سال انتشار: 1401

نوع سند: مقاله ژورنالی

زبان: انگلیسی

مشاهده: 141

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https://civilica.com/doc/1664914

شناسه ملی سند علمی:

JR_JIFRO-22-1_001

تاریخ نمایه سازی: 6 خرداد 1402

چکیده مقاله:

The juvenile Oplegnathus fasciatus were collected off the Gijang, Korea coast. A total of ۲۰۳ juvenile O. fasciatus were examined, and the range of total length (TL) was ۷.۹-۳۱.۰ mm. The most important prey component of O. fasciatus was Copepods, with ۷۵.۰% 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 ۱.۸% 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.

کلیدواژه ها:

Parrotfish ، Oplegnathus fasciatus ، Feeding habits ، Juvenile fish ، Juvenile feeding

نویسندگان

D.Y. Kang