کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2094773 1082051 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Investigation of captive red wolf ejaculate characteristics in relation to age and inbreeding
ترجمه فارسی عنوان
بررسی ویژگی های انزال گرگ قرمز اسیر در رابطه با سن و همخونی
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
چکیده انگلیسی

An evaluation of a large database of red wolf fresh ejaculate characteristics (n = 427 ejaculates from 64 wolves) was undertaken to increase knowledge of seminal characteristics in the red wolf and evaluate possible relationships between inbreeding, age, and seminal quality. Phase microscopy analysis of electroejaculates collected over 14 natural breeding seasons was compared with animal ages and inbreeding coefficients. Ejaculate volume increased and sperm concentration and total count decreased as wolves aged (P < 0.01, 0.001, and 0.05, respectively), and the proportion of sperm cell morphological abnormalities was greater in animals with higher coefficients of inbreeding (P < 0.001), particularly for older animals (P < 0.001). Moreover, the mean coefficient of inbreeding of animals that had failed to reproduce given at least one opportunity during their lifetimes was significantly greater than that of wolves with proven fertility, and wolves of proven fertility exhibited higher sperm concentrations and total counts than nonproven wolves. Thus, as the captive red wolf population becomes more inbred, the maximum age of reproduction is likely to decrease; an important finding to consider when projecting population dynamics and determining pairing recommendations.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Theriogenology - Volume 86, Issue 5, 15 September 2016, Pages 1369–1375
نویسندگان
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