کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8490683 1552240 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sexual segregation in monomorphic minnows
ترجمه فارسی عنوان
جداسازی جنسی در مینور مونومورف
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
چکیده انگلیسی
Sexual segregation, where males and females use habitat in different ways, is widespread among animals including fish, and has important consequences for key aspects of population ecology including foraging success, predator avoidance and growth. However, currently, evidence for sexual segregation is based on observations of sexually dimorphic species or species with differing reproductive strategies. We used European minnows, Phoxinus phoxinus, to test the null hypothesis that sexual segregation does not occur in sexually monomorphic species. A large, seminatural stream channel equipped with passive integrated transponder (PIT) detectors monitored the activity of 70 fish for 98 days on ecologically relevant spatial and temporal scales. Sexual segregation was evident spatially (with males and females using different habitats within the stream), temporally (males switched patches more frequently than females at night, but not during the day) and socially (with males, but not females, demonstrating same-sex association preferences). Our results are the first to demonstrate sexual segregation in monomorphic species outside the breeding season. We discuss potential explanations for our observations and ways in which patterns of variation in activity, space use and social interactions have important implications for population dynamics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Animal Behaviour - Volume 88, February 2014, Pages 7-12
نویسندگان
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