Sexual selection on male body size, genital length and heterozygosity: Consistency across habitats and social settings
dc.contributor.author | Head, Megan | |
dc.contributor.author | Kahn, Andrew T. | |
dc.contributor.author | Henshaw, Jonathan | |
dc.contributor.author | Keogh, J. Scott | |
dc.contributor.author | Jennions, MIchael D | |
dc.date.accessioned | 2019-11-29T02:31:03Z | |
dc.date.available | 2019-11-29T02:31:03Z | |
dc.date.issued | 2017 | |
dc.description.abstract | Spatial and temporal variation in environmental factors and the social setting can help to maintain genetic variation in sexually selected traits if it affects the strength of directional selection. A key social parameter which affects the intensity of, and sometimes predicts the response to, mating competition is the operational sex ratio (OSR; ratio of receptive males to females). How the OSR affects selection for specific male traits is poorly understood. It is also unclear how sexual selection is affected by interactions between the OSR and environmental factors, such as habitat complexity, that alter key male-female interactions such as mate encounter rates. Here, we experimentally manipulated the OSR and habitat complexity and quantified sexual selection on male mosquitofish (Gambusia holbrooki) by directly measuring male reproductive success (i.e. paternity). We show that despite a more equitable sharing of paternity (i.e. higher levels of multiple paternity) under a male-biased OSR, selection on focal male traits was unaffected by the OSR or habitat complexity. Instead, sexual selection consistently, and significantly, favoured smaller bodied males, males with higher genome wide heterozygosity (based on >3,000 SNP markers) and males with a relatively long gonopodium (intromittent organ). Our results show that sexual selection on male body size, relative genital size and heterozygosity in this system is consistent across environments that vary in ecological parameters that are expected to influence mate encounter rates. | en_AU |
dc.format.mimetype | application/pdf | en_AU |
dc.identifier.issn | 0021-8790 | en_AU |
dc.identifier.uri | http://hdl.handle.net/1885/187043 | |
dc.language.iso | en_AU | en_AU |
dc.provenance | http://sherpa.ac.uk/romeo/issn/0021-8790/..."author can archive post-print (ie final draft post-refereeing). 12 months embargo for scientific, technical and medicine titles" from SHERPA/RoMEO site (as at 29/11/19). | en_AU |
dc.publisher | Wiley | en_AU |
dc.relation | http://purl.org/au-research/grants/arc/DP160100285 | en_AU |
dc.rights | © 2017 The Authors. Journal of Animal Ecology © 2017 British Ecological Society | en_AU |
dc.source | The Journal of animal ecology | en_AU |
dc.subject | hfc | en_AU |
dc.subject | body size | en_AU |
dc.subject | environmental heterogeneity | en_AU |
dc.subject | poeciliid | en_AU |
dc.subject | reproductive success | en_AU |
dc.subject | animals | en_AU |
dc.subject | cyprinodontiformes | en_AU |
dc.subject | genitalia, male | en_AU |
dc.subject | male | en_AU |
dc.subject | reproduction | en_AU |
dc.subject | body size | en_AU |
dc.subject | ecosystem | en_AU |
dc.subject | mating preference, animal | en_AU |
dc.subject | sex ratio | en_AU |
dc.title | Sexual selection on male body size, genital length and heterozygosity: Consistency across habitats and social settings | en_AU |
dc.type | Journal article | en_AU |
dcterms.accessRights | Open Access | en_AU |
local.bibliographicCitation.issue | 6 | en_AU |
local.bibliographicCitation.lastpage | 1468 | en_AU |
local.bibliographicCitation.startpage | 1458 | en_AU |
local.contributor.affiliation | Head, M., Division of Ecology and Evolution, Research School of Biology, The Australian National University | en_AU |
local.contributor.affiliation | Kahn, A. T., Division of Ecology and Evolution, Research School of Biology, The Australian National University | en_AU |
local.contributor.affiliation | Henshaw, J. M., Division of Ecology and Evolution, Research School of Biology, The Australian National University | en_AU |
local.contributor.affiliation | Keogh, J. S., Division of Ecology and Evolution, Research School of Biology, The Australian National University | en_AU |
local.contributor.affiliation | Jennions, M. D., Division of Ecology and Evolution, Research School of Biology, The Australian National University | en_AU |
local.contributor.authoremail | michael.jennions@anu.edu.au | en_AU |
local.contributor.authoruid | u4037305 | en_AU |
local.identifier.citationvolume | 86 | en_AU |
local.identifier.doi | 10.1111/1365-2656.12742 | en_AU |
local.identifier.essn | 1365-2656 | en_AU |
local.identifier.uidSubmittedBy | u1005913 | en_AU |
local.publisher.url | https://www.wiley.com/en-gb | en_AU |
local.type.status | Accepted Version | en_AU |
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