نتایج جستجو برای: rutilus rutilus caspicus

تعداد نتایج: 1051  

2016
Ana Ruiz‐Navarro Phillipa K. Gillingham J. Robert Britton

Predictions of species responses to climate change often focus on distribution shifts, although responses can also include shifts in body sizes and population demographics. Here, shifts in the distributional ranges ('climate space'), body sizes (as maximum theoretical body sizes, L∞) and growth rates (as rate at which L∞ is reached, K) were predicted for five fishes of the Cyprinidae family in ...

Journal: :international journal of aquatic biology 0
alireza pourkhabbaz department of environmental sciences, faculty of natural resource and environment, birjand university, birjand, iran. borhan mansouri 2student research committee, kurdistan university of medical sciences, sanandaj, ira mohammad hosein sinkakarimi department of environmental science, faculty of natural resource and environment, malayer university, malayer, iran. ghasem rajaei department of environmental sciences, faculty of natural resource and environment, birjand university, birjand, iran. robabeh vajdi department of environmental science, faculty of environmental, university of tehran, tehran, iran.

the purpose of the present study was to determine the acute toxicity (lc 50 ) of hgcl 2 and cuso 4 in caspian roach ( rutilus caspicus ) and cuso 4 in caspian kutum ( rutilus kutum ). the caspian roach lc 50 values for hgcl 2 at 24, 48, 72, and 96-hrs of exposure, were 0.64, 0.61, 0.42, and 0.28 mg l -1 , respectively, and for cuso 4 were 11.55, 5.08, 2.49, and 1.47 mg l -1 , respectively. the ...

Journal: :Bulletin Français de la Pêche et de la Pisciculture 2004

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