کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
324110 540894 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A potential role of male and female androgen in species recognition in a unisexual–bisexual mating complex
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی علوم غدد
پیش نمایش صفحه اول مقاله
A potential role of male and female androgen in species recognition in a unisexual–bisexual mating complex
چکیده انگلیسی

Hormones play a critical role in the regulation of vertebrate mating behavior, including receptivity, and several components of mate choice. However, less is known about the role of these chemical messengers in mediating behavior associated with premating reproductive isolation. The bisexual–unisexual mating complex of sailfin mollies, Poecilia latipinna, and Amazon mollies, Poecilia formosa (sexual parasites of sailfins) has been a model system for studying ultimate mechanisms of species recognition. However proximate mechanisms, such as variation in hormone levels, have not been examined. We paired male sailfin mollies with either female conspecifics or Amazon mollies and obtained water-borne hormone samples before and after mating for all fish. We measured 11-ketotestosterone, testosterone, and estradiol from the water samples. As expected from previous studies, males mated with conspecifics more frequently than with Amazon mollies. 11-Ketotestosterone production by males increased when they mated with female sailfin mollies who themselves also showed elevated production of 11-ketotestosterone. This increase in male and female 11-ketotestosterone levels was not seen when males mated with Amazon mollies. This unique endocrine interaction represents a potential proximate mechanism for species recognition by male sailfin mollies. We found no significant change in testosterone or estradiol under these conditions suggesting that a single hormone mediates bidirectional interactions between males and females during courtship.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Hormones and Behavior - Volume 57, Issues 4–5, April 2010, Pages 427–433
نویسندگان
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