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dc.contributor.authorGarcía-Navas, Vicente-
dc.contributor.authorNoguerales, Víctor-
dc.contributor.authorCordero, Pedro J.-
dc.contributor.authorOrtego, Joaquín-
dc.date.accessioned2017-12-13T08:34:36Z-
dc.date.available2017-12-13T08:34:36Z-
dc.date.issued2017-
dc.identifierdoi: 10.1111/jeb.13131-
dc.identifierissn: 1420-9101-
dc.identifier.citationJournal of Evolutionary Biology 30(8): 1592-1608 (2017)-
dc.identifier.urihttp://hdl.handle.net/10261/158130-
dc.description.abstractSexual size dimorphism (SSD) is widespread and variable in nature. Although female-biased SSD predominates among insects, the proximate ecological and evolutionary factors promoting this phenomenon remain largely unstudied. Here, we employ modern phylogenetic comparative methods on eight subfamilies of Iberian grasshoppers (85 species) to examine the validity of different models of evolution of body size and SSD and explore how they are shaped by a suite of ecological variables (habitat specialization, substrate use, altitude) and/or constrained by different evolutionary pressures (female fecundity, strength of sexual selection, length of the breeding season). Body size disparity primarily accumulated late in the history of the group and did not follow a Brownian motion pattern, indicating the existence of directional evolution for this trait. We found support for the converse of Rensch's rule (i.e. females are proportionally bigger than males in large species) across all taxa but not within the two most speciose subfamilies (Gomphocerinae and Oedipodinae), which showed an isometric pattern. Our results do not provide support for the fecundity or sexual selection hypotheses, and we did not find evidence for significant effects of habitat use. Contrary to that expected, we found that species with narrower reproductive window are less dimorphic in size than those that exhibit a longer breeding cycle, suggesting that male protandry cannot solely account for the evolution of female-biased SSD in Orthoptera. Our study highlights the need to consider alternatives to the classical evolutionary hypotheses when trying to explain why in certain insect groups males remain small.-
dc.description.sponsorshipVGN was supported by a ‘Juan de la Cierva’ Fellowship (FPDI‐2013‐16828). VN was supported by a FPI PhD Studentship (BES‐2012‐053741). JO was supported by ‘Severo Ochoa’ (SEV‐2012‐0262) and ‘Ramón y Cajal’ (RYC‐2013‐12501) research fellowships. This work received financial support from the Spanish Ministry of Economy and Competitiveness (CGL2014‐54671‐P).-
dc.publisherBlackwell Publishing-
dc.relationMINECO/ICTI2013-2016/RYC‐2013‐12501-
dc.relationMINECO/ICTI2013-2016/CGL2014‐54671‐P-
dc.relationMINECO/ICTI2013-2016/FPDI‐2013‐16828-
dc.relation.isversionofPostprint-
dc.rightsopenAccessen_EN
dc.subjectBergmann’s rule-
dc.subjectRensch’s rule-
dc.subjectSSD-
dc.subjectPhylogeny-
dc.subjectMPCM-
dc.subjectIberian Peninsula-
dc.subjectCaelifera-
dc.titleEcological drivers of body size evolution and sexual size dimorphism in short-horned grasshoppers (Orthoptera: Acrididae)-
dc.typeartículo-
dc.relation.publisherversionhttps://doi.org/10.1111/jeb.13131-
dc.embargo.terms2018-07-03-
dc.date.updated2017-12-13T08:34:37Z-
dc.description.versionPeer Reviewed-
dc.language.rfc3066eng-
dc.contributor.funderMinisterio de Economía y Competitividad (España)-
dc.relation.csic-
dc.identifier.funderhttp://dx.doi.org/10.13039/501100003329es_ES
dc.identifier.pmid28609564-
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