نتایج جستجو برای: himantura walga
تعداد نتایج: 103 فیلتر نتایج به سال:
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Himantura signifer is a freshwater stingray which inhabits rivers in Southeast Asia. It can survive in brackish water but not seawater. In brackish water, it becomes partially ureosmotic, but how it maintains its plasma hypoionic to the external medium is enigmatic because of the lack of a rectal gland. Here, we report for the first time the expression of Na(+):K(+):2Cl(-) cotransporter 1 (nkcc...
We redescribe Orchispirium heterovitellatum based on the holotype and 3 original voucher specimens collected from the mesenteric blood vessels of scaly whiprays Himantura imbricata (Bloch and Schneider, 1801) (as Dasyatis imbricatus) captured in the western Bay of Bengal off Waltair, India. We emend the diagnosis of Orchispirium to include anterior sucker present, testis looping, cirrus sac env...
پژوهش حاضر با هدف بررسی تنوع گونه ای ماهیان غضروفی در آب های ایرانی خلیج فارس (محدوده استان هرمزگان) و دریای عمان انجام گردید و برای گونه های غالب نیز پارامتر های طول- وزن محاسبه شد. بدین منظور، نمونه‌ها به روش های صید ترال صنعتی، تحقیقاتی با کشتی کلاس فردوس و صید ضمنی ترالر های صید میگو از اردیبهشت 1394 تا مهر ماه 1395 جمع آوری گردید. در مجموع، تعداد 709 نمونه متعلق به 28 گونه از ماهیان غضروفی...
Debra Boyd-Kimball, Rukhsana Sultana, H. Fai Poon, Hafiz Mohmmad-Abdul, Bert C. Lynn, Jon B. Klein, and D. Allan Butterfield* Department of Chemistry, Center for Membrane Sciences, University of Kentucky, Lexington, Kentucky Core Proteomics Laboratory, University of Kentucky, Lexington, Kentucky Sanders-Brown Center on Aging, University of Kentucky, Lexington, Kentucky Kidney Disease Program an...
This month is the first anniversary of the 7.6 Richter earthquake which struck Pakistan on 8 October 2005. The medical community’s response to this tragedy was overwhelming. In the hardest hit areas — Bagh, Balakot, Mansehra and Muzaffarabad — there were no hospitals, clinics or trauma centers within 80 km. Initial estimates suggested a death toll of 70 000 with over 150 000 injured. In the fir...
The white-edge freshwater whip ray Himantura signifer can survive in freshwater (0.7 per thousand ) indefinitely or in brackish water (20 per thousand ) for at least two weeks in the laboratory. In freshwater, the blood plasma was maintained hyperosmotic to that of the external medium. There was approximately 44 mmol l(-1) of urea in the plasma, with the rest of the osmolality made up mainly by...
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