Jhoniel Perdigón Ferreira, Patrick T Rohner, Stefan Lüpold
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引用次数: 1
Abstract
Directional sexual selection drives the evolution of traits that are most closely linked to reproductive success, giving rise to trait exaggeration and sexual dimorphism. Exaggerated structures are often costly and, therefore, thought to be expressed in a condition-dependent manner. Sexual selection theory thus predicts a direct link between directional sexual selection, sexual dimorphism, and sex-specific condition dependence. However, only a handful of studies investigate the relationship between sexual dimorphism and condition dependence. Using 21 genetic lines of Drosophila prolongata, we here compared the degree of sexual dimorphism and sex-specific condition dependence, measured as allometric slopes, in sexually selected and non-sexual traits. Our data revealed male-biased sexual dimorphism in all traits examined, most prominently in the sexually selected forelegs. However, there was no relationship between the degree of sex-specific condition dependence and sexual dimorphism across traits and genetic lines. Our results contradict theoretical predictions and highlight the importance of understanding the role of exaggerated traits in the context of both sexual and natural selection.
Supplementary information: The online version contains supplementary material available at 10.1007/s10682-022-10226-0.
期刊介绍：
Evolutionary Ecology is a concept-oriented journal of biological research at the interface of ecology and evolution. We publish papers that therefore integrate both fields of research: research that seeks to explain the ecology of organisms in the context of evolution, or patterns of evolution as explained by ecological processes.
The journal publishes original research and discussion concerning the evolutionary ecology of organisms. These may include papers addressing evolutionary aspects of population ecology, organismal interactions and coevolution, behaviour, life histories, communication, morphology, host-parasite interactions and disease ecology, as well as ecological aspects of genetic processes. The objective is to promote the conceptual, theoretical and empirical development of ecology and evolutionary biology; the scope extends to any organism or system.
In additional to Original Research articles, we publish Review articles that survey recent developments in the field of evolutionary ecology; Ideas & Perspectives articles which present new points of view and novel hypotheses; and Comments on articles recently published in Evolutionary Ecology or elsewhere. We also welcome New Tests of Existing Ideas - testing well-established hypotheses but with broader data or more methodologically rigorous approaches; - and shorter Natural History Notes, which aim to present new observations of organismal biology in the wild that may provide inspiration for future research. As of 2018, we now also invite Methods papers, to present or review new theoretical, practical or analytical methods used in evolutionary ecology.
Students & Early Career Researchers: We particularly encourage, and offer incentives for, submission of Reviews, Ideas & Perspectives, and Methods papers by students and early-career researchers (defined as being within one year of award of a PhD degree) – see Students & Early Career Researchers
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