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Predictors of male insemination success in the mosquitofish (Gambusia holbrooki)

Head, Megan; Vega, Regina; Jacomb, Frances; Jennions, Michael

Description

Identifying targets of selection is key to understanding the evolution of sexually selected behavioral and morphological traits. Many animals have coercive mating, yet little is known about whether and how mate choice operates when these are the dominant mating tactic. Here, we use multivariate selection analysis to examine the direction and shape of selection on male insemination success in the mosquitofish (Gambusia holbrooki). We found direct selection on only one of five measured traits,...[Show more]

dc.contributor.authorHead, Megan
dc.contributor.authorVega, Regina
dc.contributor.authorJacomb, Frances
dc.contributor.authorJennions, Michael
dc.date.accessioned2016-06-14T23:20:19Z
dc.identifier.issn2045-7758
dc.identifier.urihttp://hdl.handle.net/1885/103316
dc.description.abstractIdentifying targets of selection is key to understanding the evolution of sexually selected behavioral and morphological traits. Many animals have coercive mating, yet little is known about whether and how mate choice operates when these are the dominant mating tactic. Here, we use multivariate selection analysis to examine the direction and shape of selection on male insemination success in the mosquitofish (Gambusia holbrooki). We found direct selection on only one of five measured traits, but correlational selection involving all five traits. Larger males with longer gonopodia and with intermediate sperm counts were more likely to inseminate females than smaller males with shorter gonopodia and extreme sperm counts. Our results highlight the need to investigate sexual selection using a multivariate framework even in species that lack complex sexual signals. Further, female choice appears to be important in driving the evolution of male sexual traits in this species where sexual coercion is the dominant mating tactic.
dc.publisherJohn Wiley & Sons Inc
dc.rightsAuthor/s retain copyright
dc.sourceEcology and Evolution
dc.titlePredictors of male insemination success in the mosquitofish (Gambusia holbrooki)
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume5
dc.date.issued2015
local.identifier.absfor060201 - Behavioural Ecology
local.identifier.absfor060399 - Evolutionary Biology not elsewhere classified
local.identifier.absfor060800 - ZOOLOGY
local.identifier.ariespublicationU3488905xPUB6453
local.type.statusPublished Version
local.contributor.affiliationHead, Megan, College of Medicine, Biology and Environment, ANU
local.contributor.affiliationVega, Regina, College of Medicine, Biology and Environment, ANU
local.contributor.affiliationJacomb, Frances, College of Medicine, Biology and Environment, ANU
local.contributor.affiliationJennions, Michael, College of Medicine, Biology and Environment, ANU
local.bibliographicCitation.issue21
local.bibliographicCitation.startpage4999
local.bibliographicCitation.lastpage5006
local.identifier.doi10.1002/ece3.1775
local.identifier.absseo970106 - Expanding Knowledge in the Biological Sciences
dc.date.updated2016-06-14T08:47:59Z
local.identifier.scopusID2-s2.0-84946471950
dcterms.accessRightsOpen Access
CollectionsANU Research Publications

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