کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2801360 1156156 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of nestling status and brood size on concentration of corticosterone of free-living kittiwake chicks
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی علوم غدد
پیش نمایش صفحه اول مقاله
Effect of nestling status and brood size on concentration of corticosterone of free-living kittiwake chicks
چکیده انگلیسی
Vertebrates respond to perceived stressors through increased plasma concentrations of glucocorticoids. However, there is considerable variation within and across species in the circumstances and degree to which glucocorticoid levels are elevated. We measured baseline and acute stress-induced levels of corticosterone of free-living, black-legged kittiwake chicks (Rissa tridactyla) across four consecutive breeding seasons in the northern Gulf of Alaska to determine the effect of hatching order and brood size on corticosterone levels of chicks. We sampled 12- to 15-day-old chicks from intact broods (i.e., no brood reduction) at three colonies from 2002-2005 (n = 164). Baseline and stress-induced levels of corticosterone did not vary by hatching order or brood size. These results suggest that the adrenocortical function of kittiwake chicks from broods that survive intact through 12-15 days is not affected by either hatching order or brood size.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: General and Comparative Endocrinology - Volume 166, Issue 1, 1 March 2010, Pages 19-24
نویسندگان
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