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dc.contributor.authorLifjeld, Jan Terje
dc.contributor.authorGohli, Jostein
dc.contributor.authorAlbrecht, Tomas
dc.contributor.authorGarcia-del-Rey, Eduardo
dc.contributor.authorJohannessen, Lars Erik
dc.contributor.authorKleven, Oddmund
dc.contributor.authorMarki, Petter Z.
dc.contributor.authorOmotoriogun, Taiwo Crossby
dc.contributor.authorRowe, Melissah
dc.contributor.authorJohnsen, Arild
dc.description.abstractBackground: Female promiscuity is highly variable among birds, and particularly among songbirds. Comparative work has identified several patterns of covariation with social, sexual, ecological and life history traits. However, it is unclear whether these patterns reflect causes or consequences of female promiscuity, or if they are byproducts of some unknown evolutionary drivers. Moreover, factors that explain promiscuity at the deep nodes in the phylogenetic tree may be different from those important at the tips, i.e. among closely related species. Here we examine the relationships between female promiscuity and a broad set of predictor variables in a comprehensive data set (N = 202 species) of Passerides songbirds, which is a highly diversified infraorder of the Passeriformes exhibiting significant variation in female promiscuity. Results: Female promiscuity was highly variable in all major clades of the Passerides phylogeny and also among closely related species. We found several significant associations with female promiscuity, albeit with fairly small effect sizes (all R2 ≤ 0.08). More promiscuous species had: 1) less male parental care, particularly during the early stages of the nesting cycle (nest building and incubation), 2) more short-term pair bonds, 3) greater degree of sexual dichromatism, primarily because females were drabber, 4) more migratory behaviour, and 5) stronger premating sexual selection. In a multivariate model, however, the effect of sexual selection disappeared, while the other four variables showed additive effects and together explained about 16% of the total variance in female promiscuity. Female promiscuity showed no relationship with body size, life history variation, latitude or cooperative breeding. Conclusions: We found that multiple traits were associated with female promiscuity, but these associations were generally weak. Some traits, such as reduced parental care in males and more cryptic plumage in females, might even be responses to, rather than causes of, variation in female promiscuity. Hence, the high variation in female promiscuity among Passerides species remains enigmatic. Female promiscuity seems to be a rapidly evolving trait that often diverges between species with similar ecologies and breeding systems. A future challenge is therefore to understand what drives within-lineage variation in female promiscuity over microevolutionary time scales. Keywords: Extrapair paternity, Life history, Mating system, Pair bond, Parental care, Sexual selectionnb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.subjectExtrapair paternitynb_NO
dc.subjectLife historynb_NO
dc.subjectMating systemnb_NO
dc.subjectPair bondnb_NO
dc.subjectParental carenb_NO
dc.subjectSexual selectionnb_NO
dc.titleEvolution of female promiscuity in Passerides songbirdsnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.rights.holder© The Author(s). 2019nb_NO
dc.subject.nsiVDP::Zoologiske og botaniske fag: 480nb_NO
dc.subject.nsiVDP::Zoology and botany: 480nb_NO
dc.source.journalBMC Evolutionary Biologynb_NO
dc.relation.projectAndre: Danish National Research Foundation (no. DNRF96)nb_NO
dc.relation.projectNorges forskningsråd: 230434nb_NO
dc.relation.projectAndre: Czech Science Foundation (no. 17-24782S)nb_NO
dc.relation.projectNorges forskningsråd: 213592nb_NO
dc.relation.projectNorges forskningsråd: 170853nb_NO
dc.relation.projectNorges forskningsråd: 196554nb_NO
cristin.unitnameAvdeling for terrestrisk økologi

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Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal