Sex differences in the genetic architecture of lifespan in a seed beetle: extreme inbreeding extends male lifespan |
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| Authors: | Trine Bilde Alexei A Maklakov Katrine Meisner Lucia la Guardia Urban Friberg |
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| Affiliation: | (1) Animal Ecology/Department of Ecology and Evolution, Evolutionary Biology Centre, Uppsala University, Uppsala, SE-753 32, Sweden;(2) Department of Biological Sciences, University of Aarhus, 8000 Aarhus C, Denmark;(3) School of Biological, Earth and Environmental Sciences, The University of New South Wales, Kensington, Sydney, NSW, 2052, Australia;(4) Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, California 93106-9610, USA |
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| Abstract: | Background Sex differences in lifespan are ubiquitous throughout the animal kingdom but the causes underlying this phenomenon remain poorly understood. Several explanations based on asymmetrical inheritance patterns (sex chromosomes or mitochondrial DNA) have been proposed, but these ideas have rarely been tested experimentally. Alternatively, sexual dimorphism in lifespan could result from sex-specific selection, caused by fundamental differences in how males and females optimize their fitness by allocating resources into current and future reproduction. |
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