[صفحه اصلی ]   [Archive]  
:: صفحه اصلي :: درباره نشريه :: آخرين شماره :: تمام شماره‌ها :: جستجو :: ثبت نام :: ارسال مقاله :: تماس با ما ::
:: دوره 17، شماره 1 - ( 10-1396 ) ::
جلد 17 شماره 1 صفحات 179-193 برگشت به فهرست نسخه ها
Trophic level, food preference and feeding ecology of Rachycentron canadum (Linnaeus, 1766), in Hormuzgan Province waters (northern Persian Gulf and Oman Sea)
چکیده:   (918 مشاهده)
This study examined the ecological factors associated with feeding in Rachycentron canadum (cobia) in the waters of Persian Gulf and Oman Sea. Seasonally variation of stomach condition of cobia male, females, pooled and size wise were analyzed. In general, 577 cobia were collected (340 males, 237 females) (20–161 cm Total length) from Sept. 2014 to Sept. 2015 by the Ferdows-1 survey ship and from the landing areas in Bandar Abbas harbor seasonally. Our results provide the first estimates of trophic level (Tr.L) (4.32±0.76, mean±Se), consumption per biomass (Q/B) (6.13), and aspect ratio of the caudal fin (ARc.f) (3.1) for R. canadum in the Hormuzgan Province. We also found that bony fish made up more than 80 percent of the relative importance of particular prey (IRI %), indicating R. canadum primarily preys on these species. The immature group (20–40 cm,T.L), tended to feed on Penaeidae family, small crabs, and mollusks. Hierarchical clustering revealed that the frequencies of different types of prey could be applied to categorize the length classes into three levels. The result of this study revealed that the immature group and the 20-40 cm length class tended to feed on Penaeidae family, crabs, and mollusks. Also, we found that males generally fed more than females in all seasons and that R. canadum had an average dietary intake. The findings of this study can be used to prepare a food formulation for cobia that resembles the native diet.
متن کامل [PDF 897 kb]   (428 دریافت)    
نوع مطالعه: پژوهشي |
دریافت: ۱۳۹۶/۱۱/۳ | پذیرش: ۱۳۹۶/۱۱/۳ | انتشار: ۱۳۹۶/۱۱/۳
ارسال نظر درباره این مقاله
نام کاربری یا پست الکترونیک شما:

CAPTCHA code


XML   English Abstract   Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Behzadi S, Kamrani E, Kaymaram F, Ranjbar M. Trophic level, food preference and feeding ecology of Rachycentron canadum (Linnaeus, 1766), in Hormuzgan Province waters (northern Persian Gulf and Oman Sea). IJFS. 2018; 17 (1) :179-193
URL: http://jifro.ir/article-1-3277-fa.html

Trophic level, food preference and feeding ecology of Rachycentron canadum (Linnaeus, 1766), in Hormuzgan Province waters (northern Persian Gulf and Oman Sea). مجله علوم شیلاتی ایران. 1396; 17 (1) :179-193

URL: http://jifro.ir/article-1-3277-fa.html



دوره 17، شماره 1 - ( 10-1396 ) برگشت به فهرست نسخه ها
مجله علوم شیلاتی ایران Iranian Journal of Fisheries Sciences
Persian site map - English site map - Created in 0.06 seconds with 30 queries by YEKTAWEB 3755