First records of Ambiphrya and Vorticella spp. (Protozoa, Ciliophora) in cultured Nile tilapia (Oreochromis niloticus) in the central region of Saudi Arabia
نویسندگان
چکیده
منابع مشابه
the u.s. policy in central asia and its impact on the colored revolutions in the region (the case study of tulip revolution in kyrgyzstan)
چکیده ندارد.
15 صفحه اولthe role of russia in transmission of energy from central asia and caucuses to european union
پس ازفروپاشی شوروی،رشد منابع نفت و گاز، آسیای میانه و قفقاز را در یک بازی ژئوپلتیکی انرژی قرار داده است. با در نظر گرفتن این منابع هیدروکربنی، این منطقه به یک میدانجنگ و رقابت تجاری برای بازی های ژئوپلتیکی قدرت های بزرگ جهانی تبدیل شده است. روسیه منطقه را به عنوان حیات خلوت خود تلقی نموده و علاقمند به حفظ حضورش می باشد تا همانند گذشته گاز طبیعی را به وسیله خط لوله مرکزی دریافت و به عنوان یک واس...
15 صفحه اولLength-Weight Relationships, Condition Factor and Sex-Ratio of Nile Tilapia, Oreochromis niloticus in Wadi Hanifah, Riyadh, Saudi Arabia
The studies on length-weight relationships (LWR), condition factors (K) and sex-ratio of Nile tilapia, Oreochromis niloticus in Wadi Hanifah, Riyadh, Saudi Arabia was conducted from September 2011 to August 2012. A total of 575 specimens were collected from different sample stations using different types of net and by angling. The fishes were ranged from 76-273 mm, 69-261 mm and 69-273 mm in le...
متن کاملMultivariate Analysis of Morphometric Parameters in Wild and Cultured Nile Tilapia Oreochromis niloticus
In order to evaluate the phenotypic variation between natural population and cultured stocks of Nile tilapia (Oreochromis niloticus Linnaeus, 1758), the intraand inter-population differentiations were analyzed using biometric approach. Thus, eight morphological measurements were taken from 300 specimens collected from Ismailia Canal (AB) as natural population and two cultured stocks from Kafr E...
متن کاملVisual communication stimulates reproduction in Nile tilapia, Oreochromis niloticus (L.).
Reproductive fish behavior is affected by male-female interactions that stimulate physiological responses such as hormonal release and gonad development. During male-female interactions, visual and chemical communication can modulate fish reproduction. The aim of the present study was to test the effect of visual and chemical male-female interaction on the gonad development and reproductive beh...
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ژورنال
عنوان ژورنال: Saudi Journal of Biological Sciences
سال: 2014
ISSN: 1319-562X
DOI: 10.1016/j.sjbs.2014.01.002