High maternal species density mediates unidirectional heterospecific matings in<i>Calopteryx</i>damselflies

Keränen, Inka; Kahilainen, Aapo; Knott, K. Emily; Kotiaho, Janne S.; Kuitunen, Katja

doi:10.1111/j.1095-8312.2012.02043.x

Cited by 19 publications

(30 citation statements)

References 55 publications

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“…As a result, interspecific copulations are easily achieved once a tandem has been formed (LorenzoCarballa et al 2014), suggesting that hybridization may be widespread. Indeed, interspecific tandems and copulations are recurrent in the field (Ker€ anen et al 2013; M. Wellenreuther, unpublished data), and both morphological (De Marchi 1990;Dumont et al 1993) and molecular analyses (Tynkkynen et al 2008a,b;Ker€ anen et al 2013;LorenzoCarballa et al 2014) confirm the presence of hybrids. The morphological work of Dumont et al reported hybridization between C. splendens and C. xanthostoma (Dumont et al 1993), while molecular data have confirmed that hybridization between C. splendens and C. virgo and between C. splendens and C. haemorrhoidalis is reciprocal, and that both F 1 hybrids and backcrosses are produced (albeit at low densities for the latter pair) (Tynkkynen et al 2008a,b;Ker€ anen et al 2013;Lorenzo-Carballa et al 2014).…”

Section: Evidence For Nonadaptive Diversification In Reproductionmentioning

confidence: 99%

Non-adaptive radiation in damselflies

Wellenreuther¹

2016

2016 International Congress of Entomology

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Adaptive radiations have long served as living libraries to study the build-up of species richness; however, they do not provide good models for radiations that exhibit negligible adaptive disparity. Here, we review work on damselflies to argue that nonadaptive mechanisms were predominant in the radiation of this group and have driven species divergence through sexual selection arising from male-female mating interactions. Three damselfly genera (Calopteryx, Enallagma and Ischnura) are highlighted and the extent of (i) adaptive ecological divergence in niche use and (ii) nonadaptive differentiation in characters associated with reproduction (e.g. sexual morphology and behaviours) was evaluated. We demonstrate that species diversification in the genus Calopteryx is caused by nonadaptive divergence in coloration and behaviour affecting premating isolation, and structural differentiation in reproductive morphology affecting postmating isolation. Similarly, the vast majority of diversification events in the sister genera Enallagma and Ischnura are entirely driven by differentiation in genital structures used in species recognition. The finding that closely related species can show negligible ecological differences yet are completely reproductively isolated suggests that the evolution of reproductive isolation can be uncoupled from niche-based divergent natural selection, challenging traditional niche models of species coexistence.

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Section: Evidence For Nonadaptive Diversification In Reproductionmentioning

confidence: 99%

Non-adaptive radiation in damselflies

Wellenreuther¹

2016

2016 International Congress of Entomology

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“…Indeed, interspecific tandems and copulations are recurrent in the field (Keränen et al. ; M. Wellenreuther, unpublished data), and both morphological (De Marchi ; Dumont et al. ) and molecular analyses (Tynkkynen et al.…”

Section: Evidence For Nonadaptive Diversification In Reproductionmentioning

confidence: 99%

Nonadaptive radiation in damselflies

Wellenreuther

Sánchez-Guillén

2015

Evolutionary Applications

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Adaptive radiations have long served as living libraries to study the build‐up of species richness; however, they do not provide good models for radiations that exhibit negligible adaptive disparity. Here, we review work on damselflies to argue that nonadaptive mechanisms were predominant in the radiation of this group and have driven species divergence through sexual selection arising from male–female mating interactions. Three damselfly genera (Calopteryx,Enallagma and Ischnura) are highlighted and the extent of (i) adaptive ecological divergence in niche use and (ii) nonadaptive differentiation in characters associated with reproduction (e.g. sexual morphology and behaviours) was evaluated. We demonstrate that species diversification in the genus Calopteryx is caused by nonadaptive divergence in coloration and behaviour affecting premating isolation, and structural differentiation in reproductive morphology affecting postmating isolation. Similarly, the vast majority of diversification events in the sister genera Enallagma and Ischnura are entirely driven by differentiation in genital structures used in species recognition. The finding that closely related species can show negligible ecological differences yet are completely reproductively isolated suggests that the evolution of reproductive isolation can be uncoupled from niche‐based divergent natural selection, challenging traditional niche models of species coexistence.

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“…Molecular and morphological analyses have also confirmed that putative hybrids found in the field were indeed either F1 hybrids or backcrosses, both in the case of C. splendens and C. virgo (4/2104 individuals are hybrids or backcrosses = 0.19%; Keränen et al. ) and in the case of C. splendens and C. haemorrhoidalis (quantitative data not available; Lorenzo‐Carballo et al. ).…”

Section: Methodsmentioning

confidence: 88%

“…; Keränen et al. ). Sexual isolation between these two species is incomplete (Table ), as revealed by the existence of both heterospecific matings in the field and viable hybrids (Keränen et al.…”

Section: Discussionmentioning

confidence: 98%

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Linking intra- and interspecific assortative mating: Consequences for asymmetric sexual isolation

et al. 2016

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Assortative mating is of interest because of its role in speciation and the maintenance of species boundaries. However, we know little about how within-species assortment is related to interspecific sexual isolation. Most previous studies of assortative mating have focused on a single trait in males and females, rather than utilizing multivariate trait information. Here, we investigate how intraspecific assortative mating relates to sexual isolation in two sympatric and congeneric damselfly species (genus Calopteryx). We connect intraspecific assortment to interspecific sexual isolation by combining field observations, mate preference experiments, and enforced copulation experiments. Using canonical correlation analysis, we demonstrate multivariate intraspecific assortment for body size and body shape. Males of the smaller species mate more frequently with heterospecific females than males of the larger species, which showed less attraction to small heterospecific females. Field experiments suggest that sexual isolation asymmetry is caused by male preferences for large heterospecific females, rather than by mechanical isolation due to interspecific size differences or female preferences for large males. Male preferences for large females and male-male competition for high quality females can therefore counteract sexual isolation. This sexual isolation asymmetry indicates that sexual selection currently opposes a species boundary.

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High maternal species density mediates unidirectional heterospecific matings inCalopteryxdamselflies

Cited by 19 publications

References 55 publications

Non-adaptive radiation in damselflies

Non-adaptive radiation in damselflies

Nonadaptive radiation in damselflies

Linking intra- and interspecific assortative mating: Consequences for asymmetric sexual isolation

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