Is sexual selection beneficial during adaptation to environmental change?

Candolin, Ulrika; Heuschele, Jan

doi:10.1016/j.tree.2008.04.008

Cited by 202 publications

(247 citation statements)

References 76 publications

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“…Boechera | UPGRADE2 | APOLLO | geographic parthenogenesis | niche conservation S exual reproduction offers several evolutionary advantages over asexuality, including accelerated adaptation to variation in environments (1), competitors (2), and parasites (3). As such, evolutionary transitions from sexual to asexual reproduction or outcrossing to selfing may have a strong impact on an organism's ecological distribution and adaptive potential (4,5).…”

mentioning

confidence: 99%

Hybrid apomicts trapped in the ecological niches of their sexual ancestors

Mau

Lovell

Corral

et al. 2015

Proc. Natl. Acad. Sci. U.S.A.

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Asexual reproduction is expected to reduce the adaptive potential to novel or changing environmental conditions, restricting or altering the ecological niche of asexual lineages. Asexual lineages of plants and animals are typically polyploid, an attribute that may influence their genetic variation, plasticity, adaptive potential, and niche breadth. The genus Boechera (Brassicaceae) represents an ideal model to test the relative ecological and biogeographic impacts of reproductive mode and ploidy because it is composed of diploid sexual and both diploid and polyploid asexual (i.e., apomictic) lineages. Here, we demonstrate a strong association between a transcriptionally conserved allele and apomictic seed formation. We then use this allele as a proxy apomixis marker in 1,649 accessions to demonstrate that apomixis is likely to be a common feature across the Boechera phylogeny. Phylogeographic analyses of these data demonstrate (i) species-specific niche differentiation in sexuals, (ii ) extensive niche conservation between differing reproductive modes of the same species, (iii) ploidy-specific niche differentiation within and among species, and (iv) occasional niche drift between apomicts and their sexual ancestors. We conclude that ploidy is a substantially stronger and more common driver of niche divergence within and across Boechera species although variation in both traits may not necessarily lead to niche evolution on the species scale.Boechera | UPGRADE2 | APOLLO | geographic parthenogenesis | niche conservation

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mentioning

confidence: 99%

Hybrid apomicts trapped in the ecological niches of their sexual ancestors

Mau

Lovell

Corral

et al. 2015

Proc. Natl. Acad. Sci. U.S.A.

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“…For example, if mating efficiency does indeed strongly contribute to the reproductive performance of outcrossers, as we hypothesize, high temperature will impose strong selection on traits associated with mating success. This would further lead to intense sexual selection over mating, making sexual selection an important contributor to adaptation process in populations of outcrossers (Candolin and Heuschele 2008;Lorch et al 2003;Plesnar-Bielak et al 2012).…”

Section: Discussionmentioning

confidence: 99%

Fitness effects of thermal stress differ between outcrossing and selfing populations inCaenorhabditis elegans

Plesnar‐Bielak

Labocha

Kosztyła

et al. 2016

Preprint

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The maintenance of males and outcrossing is widespread, despite considerable costs of males. By enabling recombination between distinct genotypes, outcrossing may be advantageous during adaptation to a novel environments and if so, it should be selected for under environmental challenge. However, a given environmental change may influence fitness of male, female, and hermaphrodite or asexual individuals differently, and hence the relationship between reproductive system and dynamics of adaptation to novel conditions may not be driven solely by the level of outcrossing and recombination. This has important implications for studies investigating the evolution of reproductive modes in the context of environmental changes, and for the extent to which their findings can be generalized. Here, we use Caenorhabditis elegans – a free-living nematode species in which hermaphrodites (capable of selfing but not cross-fertilizing each other) coexist with males (capable of fertilizing hermaphrodites) – to investigate the response of wild type as well as obligatorily outcrossing and obligatorily selfing lines to stressfully increased ambient temperature. We found that thermal stress affects fitness of outcrossers much more drastically than that of selfers. This shows that apart from the potential for recombination, the selective pressures imposed by the same environmental change can differ between populations expressing different reproductive systems and affect their adaptive potential.

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“…Emlen & Oring 1977;Candolin & Heuschele 2008). However, apart from an examination of sexual conflict and mate availability (Kokko & Rankin 2006), almost no consideration has been given to the effects of local environment and condition in economic studies of sexual conflict.…”

Section: Environmental Sensitivity and Condition Dependencementioning

confidence: 99%

“…Kokko & Rankin 2006;Candolin & Heuschele 2008), such effects have been largely overlooked in studies of sexual conflict. New empirical data demonstrate that the economics of antagonistic traits and interactions can depend on both the local environment and condition of the interacting individuals, which together greatly reduce the precision with which the outcome of SA coevolution can be predicted.…”

Section: Introductionmentioning

confidence: 99%

The conditional economics of sexual conflict

et al. 2009

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Sexual conflict is a fundamentally important aspect of male-female interactions. In this opinion piece, we emphasize two approaches that warrant significantly greater attention. First, we review the importance of understanding the 'economics' (costs and benefits) of sexual interactions and note surprisingly large, unrecognized gaps in our knowledge. Second, we highlight the novel obstacles and opportunities afforded by the dependence of sexually antagonistic (SA) selection on both the local environment and condition of the interacting individuals. We conclude that more research in these two areas is essential to fully understand the evolution of SA interactions and will provide significant new insights into the extent to which coevolution of the sexes is shaped by conflict. We argue that these approaches, although not new to the field, are undervalued and under-represented.

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Is sexual selection beneficial during adaptation to environmental change?

Cited by 202 publications

References 76 publications

Hybrid apomicts trapped in the ecological niches of their sexual ancestors

Hybrid apomicts trapped in the ecological niches of their sexual ancestors

Fitness effects of thermal stress differ between outcrossing and selfing populations inCaenorhabditis elegans

The conditional economics of sexual conflict

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