کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2417756 1104327 2008 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Age-based female preference in the fruit fly Drosophila pseudoobscura
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
پیش نمایش صفحه اول مقاله
Age-based female preference in the fruit fly Drosophila pseudoobscura
چکیده انگلیسی

With respect to mate choice, females of many species discriminate between males on the basis of age. The adaptive significance of age-based mate choice is unclear, with various hypotheses making conflicting predictions. We examined the possibility of female preference in the fruit fly Drosophila pseudoobscura, a species where females gain no significant nutritional benefits from mating. Females were shown to prefer to mate with old males in two-male choice experiments and accepted old males faster than young males in single-male tests. Females mated to old males had a higher fecundity, possibly related to a transfer of more sperm and/or a larger volume of accessory gland proteins during the longer copulation durations experienced with old males, although these possibilities were not directly tested. Hence, females appear to derive direct benefits from preferring to mate with older males. In contrast, there was no evidence of mate preference for the sons of either old or young males when matched for age, indicating that the mating advantage of old males is not passed to their sons. These sets of experiments suggest that in D. pseudoobscura the benefit of age-based preference to females is increased fecundity due to greater investment per mating by older males.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Animal Behaviour - Volume 75, Issue 4, April 2008, Pages 1413–1421
نویسندگان
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