Divergent competitive phenotypes between females of two sex-role-reversed species

Lipshutz, Sara E.

doi:10.1007/s00265-017-2334-0

Cited by 24 publications

(30 citation statements)

References 57 publications

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“…This pattern is suggestive of asymmetric introgression from the larger J. spinosa into J. jacana across the jacana hybrid zone. Considering that female J. spinosa are larger in morphological traits used in competition and more aggressive than female J. jacana (Lipshutz ), our results are consistent with the hypothesis that female competition influences patterns of introgression between the jacana species. Our findings align with studies of other hybrid zones (Baldassarre et al.…”

Section: Discussionsupporting

confidence: 88%

“…We classified individuals as adults or immatures based on plumage (Jenni ) and sexed individuals in the field based on mass (Emlen and Wrege ) or museum tag information. For ambiguous cases we confirmed sex using PCR of the CHD regions of the W and Z chromosomes (Fridolfsson and Ellegren , see Lipshutz for protocol details).…”

Section: Methodsmentioning

confidence: 99%

“…We combined data from both sexes for these traits, since jacanas are sexually monomorphic in plumage coloration and ornamentation shape (Emlen and Wrege ). In contrast, all competitive traits, including body mass and average spur length, were sexually dimorphic (Lipshutz ), so we estimated clines separately for males and females for these traits. For all clinal analyses we included all live and museum samples collected from 2010 to 2014, but did not include earlier museum specimens.…”

Section: Methodsmentioning

confidence: 99%

“…We also compare the introgression of morphological traits associated with competition (body mass and wing spurs) relative to the transition of genome‐wide loci and other phenotypic traits that differ between the species (facial ornamentation and dorsal plumage). We previously found that J. spinosa has a more competitive phenotype than J. jacana , and greater sexual size dimorphism (Lipshutz ). We therefore predict that relative to other phenotypic traits and genome‐wide markers, the geographic cline centers of female competitive traits will be shifted from the direction of J. spinosa into J. jacana –this would provide evidence of asymmetric introgression in the hybrid zone.…”

mentioning

confidence: 99%

“…Body mass is a strong predictor of female mating success, and only the heaviest females control access to mates by defending breeding territories (Stephens ; Emlen and Wrege ). Between the species, J. spinosa females have larger body mass, longer wing spurs and are more aggressive than J. jacana females; J. spinosa males also have longer wing spurs than J. jacana males, but they do not differ in body mass (Lipshutz ). Previous work on the jacana hybrid zone found a bias in the introgression of mitochondrial DNA (mtDNA), in which phenotypic hybrids shared mtDNA haplotypes with J. spinosa but not J. jacana (Miller et al.…”

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confidence: 99%

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Differential introgression of a female competitive trait in a hybrid zone between sex‐role reversed species

et al. 2019

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Mating behavior between recently diverged species in secondary contact can impede or promote reproductive isolation. Traditionally, researchers focus on the importance of female mate choice and male–male competition in maintaining or eroding species barriers. Although female–female competition is widespread, little is known about its role in the speciation process. Here, we investigate a case of interspecific female competition and its influence on patterns of phenotypic and genetic introgression between species. We examine a hybrid zone between sex‐role reversed, Neotropical shorebird species, the northern jacana (Jacana spinosa) and wattled jacana (J. jacana), in which female–female competition is a major determinant of reproductive success. Previous work found that females of the more aggressive and larger species, J. spinosa, disproportionately mother hybrid offspring, potentially by monopolizing breeding territories in sympatry with J. jacana. We find a cline shift of female body mass relative to the genetic center of the hybrid zone, consistent with asymmetric introgression of this competitive trait. We suggest that divergence in sexual characteristics between sex‐role reversed females can influence patterns of gene flow upon secondary contact, similar to males in systems with more typical sex roles.

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Section: Discussionsupporting

confidence: 88%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

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confidence: 99%

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Differential introgression of a female competitive trait in a hybrid zone between sex‐role reversed species

et al. 2019

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Genomic divergence in allopatric Northern Cardinals of the North American warm deserts is linked to behavioral differentiation

Provost

Mauck

Smith

2018

Ecology and Evolution

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Biogeographic barriers are considered important in initiating speciation through geographic isolation, but they rarely indiscriminately and completely reduce gene flow across entire communities. Explicitly demonstrating which factors are associated with gene‐flow levels across barriers would help elucidate how speciation is initiated and isolation maintained. Here, we investigated the association of behavioral isolation on population differentiation in Northern Cardinals (Cardinalis cardinalis) distributed across the Cochise Filter Barrier, a region of transitional habitat which separates the Sonoran and Chihuahuan deserts of North America. Using genomewide markers, we modeled demographic history by fitting the data to isolation and isolation‐with‐migration models. The best‐fit model indicated that desert populations diverged in the Pleistocene with low, historic, and asymmetric gene flow across the barrier. We then tested behavioral isolation using reciprocal call‐broadcast experiments to compare song recognition between deserts, controlling for song dialect changes within deserts. We found that male Northern Cardinals in both deserts were most aggressive to local songs and failed to recognize across‐barrier songs. A correlation of genomic differentiation and strong song discrimination is consistent with a model where speciation is initiated across a barrier and maintained by behavioral isolation.

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Multiple traits predict reproductive success and assortative mating in mutually ornamented Campo flickers (Colaptes campestris campestris)

Dias

Cardoso

2023

Behav Ecol Sociobiol

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Divergent competitive phenotypes between females of two sex-role-reversed species

Cited by 24 publications

References 57 publications

Differential introgression of a female competitive trait in a hybrid zone between sex‐role reversed species

Differential introgression of a female competitive trait in a hybrid zone between sex‐role reversed species

Genomic divergence in allopatric Northern Cardinals of the North American warm deserts is linked to behavioral differentiation

Multiple traits predict reproductive success and assortative mating in mutually ornamented Campo flickers (Colaptes campestris campestris)

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