کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2843371 1166090 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Developmental plasticity of thermal tolerances in temperate and subtropical populations of Drosophila melanogaster
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
پیش نمایش صفحه اول مقاله
Developmental plasticity of thermal tolerances in temperate and subtropical populations of Drosophila melanogaster
چکیده انگلیسی

Variation in temperature imposes selection pressures on organisms. In variable environments, organisms must adopt fixed or plastic strategies that enable persistence over a broad range of temperatures. In coarse-grained environments, where the thermal variation among generations exceeds that within generations, selection should favor developmental plasticity. Here, we compare the degree of developmental plasticity of thermal tolerances between populations of Drosophila melanogaster from environments with relatively high (Marlton, NJ, USA) and relatively low (Miami, FL, USA) variance in temperature among generations. We predicted that flies from Marlton would exhibit a greater plasticity of thermal tolerances than would flies from Miami. Flies from both populations were reared in three ecologically relevant treatments, after which we assessed knockdown and chill-coma recovery times. Flies from both populations responded plastically to temperature, but flies from New Jersey did not exhibit greater plasticity. Our results complement previous comparative studies and indicate that selection favors plasticity of thermal tolerances equally in these populations.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Thermal Biology - Volume 37, Issue 3, April 2012, Pages 211–216
نویسندگان
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