|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|5517932||1401040||2017||3 صفحه PDF||ندارد||دانلود رایگان|
â¢Three taxa of intestinal parasites in flying squirrels (Glaucomys spp.) reported.â¢Testosterone determined by high-performance liquid chromatography UV spectroscopy.â¢Testosterone highest in flying squirrels infected with Strongyloides robustus.â¢Link between parasitism and testosterone in wildlife needs further exploration.
The immuno-competence hypothesis proposes that higher levels of testosterone increases the susceptibility to parasitism. Here we examined the testosterone levels in two species of flying squirrels (Glaucomys): one known to regularly host a nematode species (Strongyloides robustus) without ill effects (G.Â volans) and a closely related species that is considered negatively affected by the parasite. We quantified fecal testosterone levels in northern and southern flying squirrels (G.Â sabrinus, G. volans) with high-performance liquid chromatography-ultraviolet spectroscopy (HPLC-UV), and compared levels to endoparasites detected in individual squirrels. Qualitatively, we found highest levels of testosterone in male northern flying squirrels infected with Strongyloides robustus. This analytical approach represents an alternative and equally reliable method to using enzyme-linked immunosorbent assay (ELISA), for detecting and quantifying fecal testosterone levels.
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Journal: International Journal for Parasitology: Parasites and Wildlife - Volume 6, Issue 2, August 2017, Pages 135-137open access