کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8475617 1550457 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Comparative short-term variation of urine concentration among three sigmodontine rodent species from contrasting habitats
ترجمه فارسی عنوان
تنوع کوتاه مدت مقادیر غلظت ادرار در میان سه گونه از جوندگان گونه سیگدموندین از زیستگاه های متضاد
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
چکیده انگلیسی
We compared urine concentration capacity among three phylogenetically closed sigmodontine rodent species that occur in two distinct habitats: Necromys lasiurus (xeric), Akodon cursor and Akodon lindberghi (mesic). Water conservation ability was evaluated in 30 h-trials, with urine collected every 6 h. A control (I- water and food ad libitum) and a test (II- food and water deprivation) were conducted for each species. Body mass loss (BML), urine volume (UV), urine relative volume (UVr) and urine concentration (UC) were compared between experiments I and II for each species and among species. Changes in urine osmolality between experiments were modeled using exponential and sine functions. Circadian variation of urine concentration was obtained by sine functions fit to the experiments I. Best fit was achieved for sine functions with an accumulation term for experiments II, showing that even in stressful conditions the circadian variation is still present. Highest UC and lowest BML were obtained from Necromys lasiurus individuals, which achieved them at faster rates. The lowest UC with highest BML were obtained for A. cursor individuals at slower rates and values than A. lindberghi, which were intermediate. Necromys lasiurus is more adapted for xeric habitats achieving higher urine concentration in shorter time and faster rate than species of genus Akodon.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mammalian Biology - Volume 90, May 2018, Pages 1-9
نویسندگان
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