Independent evolution of the sexes promotes amphibian diversification

Lisle, Stephen P. De; Rowe, Locke

doi:10.1098/rspb.2014.2213

Cited by 29 publications

(33 citation statements)

References 46 publications

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“…Again, our interest here is in correctly estimating diversification rates of clades (e.g., higher taxa), both large and small, as in many empirical studies (e.g., Adams et al. ; De Lise and Rowe ; Puttick et al. ; Wiens ,b; Cooney et al.…”

Section: Discussionmentioning

confidence: 99%

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Estimating diversification rates for higher taxa: BAMM can give problematic estimates of rates and rate shifts

Meyer

Wiens

2017

Evolution

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Here, we use simulations to compare their performance. We found that BAMM yielded relatively weak relationships between true and estimated diversification rates. This occurred because BAMM underestimated the number of rates shifts across each tree, and assigned high rates to small clades with low rates. Errors in both speciation and extinction rates contributed to these errors, showing that using BAMM to estimate only speciation rates is also problematic. In contrast, the MS estimators (particularly using stem group ages), yielded stronger relationships between true and estimated diversification rates, by roughly twofold. Furthermore, the MS approach remained relatively accurate when diversification rates were heterogeneous within clades, despite the widespread assumption that it requires constant rates within clades. Overall, we caution that BAMM may be problematic for estimating diversification rates and rate shifts.

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Section: Discussionmentioning

confidence: 99%

“…; Rabosky et al. ), sexual‐size dimorphism (De Lisle and Rowe ), herbivory (e.g., Price et al. ; Wiens et al.…”

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confidence: 99%

Estimating diversification rates for higher taxa: BAMM can give problematic estimates of rates and rate shifts

Meyer

Wiens

2017

Evolution

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“…A recent study on fossil ostracod species also presented evidence for elevated extinction risk following the evolution of male‐biased size and shape sexual dimorphism (Martins et al, ). Conversely, in a study of over 700 amphibian species, taxa with female‐biased sexual size dimorphism had reduced extinction risk, higher species richness and an increased diversification rate (Lisle & Rowe, ). This is consistent with a positive link between female fitness and population fitness in an experimental laboratory study of beetles (Berger et al, ).…”

Section: Eco‐evolutionary Feedbacks From Sexual Selection and Sexual mentioning

confidence: 99%

Eco‐evolutionary dynamics of sexual selection and sexual conflict

Svensson

2018

Functional Ecology

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The research framework of eco‐evolutionary dynamics is increasing in popularity, as revealed by a steady stream of review articles and a recent and influential book, but primary empirical research is lagging behind. Moreover, the few empirical case studies demonstrating eco‐evolutionary dynamics might not be entirely representative. Much current research on eco‐evolutionary dynamics is focused on how ecological interactions lead to natural selection on phenotypic traits (“eco‐evo”), and in turn how the evolutionary change in such traits feed back on ecological dynamics (“evo‐eco”). A key feature of eco‐evolutionary dynamics is thus a feedback loop between ecology (e.g., population dynamics) and evolution (i.e., genetic change). In contrast to previous research on eco‐evolutionary dynamics driven by natural selection, the role of eco‐evolutionary feedbacks in sexual selection and sexual conflict is largely unknown. Here, I review theory and the limited empirical evidence in this area and identify some promising future lines of research. I update a past review on contemporary evolution of secondary sexual traits in natural populations and formulate six explicit and rigorous criteria for contemporary evolution of secondary sexual traits by natural or sexual selection or sexual conflict. I then discuss the other key prediction of eco‐evolutionary dynamics (i.e., evolution by sexual selection or sexual conflict shapes ecological dynamics). My overview reveals that our current knowledge in this area is limited and mainly come from theoretical models and laboratory experiments. A major challenge in eco‐evolutionary dynamics is therefore to link ecological and population dynamics with sexual selection and sexual conflict. This is not an easy task but might be possible with carefully chosen study systems and methods. A http://onlinelibrary.wiley.com/doi/10.1111/1365-2435.13245/suppinfo is available for this article.

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“…At macroevolutionary time-scales, the only known study (De Lisle & Rowe, 2015) presented robust evidence rejecting the core prediction that lineage diversification rates decay with increasing sexual dimorphism. At macroevolutionary time-scales, the only known study (De Lisle & Rowe, 2015) presented robust evidence rejecting the core prediction that lineage diversification rates decay with increasing sexual dimorphism.…”

Section: Introductionmentioning

confidence: 91%

“…The proliferation of sexually dimorphic species is predicted to saturate morphospace, thus increasingly limiting the opportunities for lineages to radiate adaptively via niche filling (De Lisle & Rowe, 2015;Losos, 2009;Schoener, 1977). The proliferation of sexually dimorphic species is predicted to saturate morphospace, thus increasingly limiting the opportunities for lineages to radiate adaptively via niche filling (De Lisle & Rowe, 2015;Losos, 2009;Schoener, 1977).…”

Section: Introductionmentioning

confidence: 99%

Sexes and species as rival units of niche saturation during community assembly

Pincheira‐Donoso

Tregenza

Butlin

et al. 2018

Global Ecol Biogeogr

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Aim Community assembly is traditionally assumed to result from speciation and colonization mediated by available niche space. This paradigm is expanded by the theory that niche space can also be saturated by intersexual adaptive divergence (ecological sexual dimorphism) when interspecific competition is relaxed. This theory (here termed ‘niche‐packing equivalence’) predicts that the evolution of ecological sexual dimorphism constrains the ecological opportunity that would otherwise lead to ecological speciation or colonization, and that saturation of niches by different species constrains divergent selection for divergence between the sexes. Therefore, sexes and species are equivalent, yet antagonistic units of niche occupation. We present the most comprehensive test of the niche‐packing equivalence theory at ecological time‐scales (assemblage level) to date. Location South America Major taxa studied Liolaemus lizards. Methods We identified 23 Liolaemus assemblages varying in species richness and sexual size dimorphism (SSD), distributed across a wide environmental range. We used mixed effects models, permutation tests and Markov Chain Monte Carlo (MCMC) regressions to quantify the relationship between SSD and species richness. We then partitioned the body size niche dimension between the sexes and amongst species, and tested for non‐overlapping body size distributions. We regressed SSD and species richness of each assemblage against environmental predictors, using multi‐model inference and structural equation modelling. Results Sexual dimorphism declines with increasing species richness, and a strong signal of tension between the two remains following phylogenetic control. This pattern is accompanied by evidence of constraints on body‐size partitioning amongst species and between the sexes: the two units of niche saturation tend not to overlap. However, across assemblages, species richness and SSD correlate with different environmental variables, suggesting that their tension is context‐specific. Main conclusions Our evidence supports the prediction that sexual dimorphism and species richness are alternative outcomes of adaptive radiation. However, this antagonism is mediated by a suite of environmental predictors that influence dimorphism and species richness differentially.

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Independent evolution of the sexes promotes amphibian diversification

Cited by 29 publications

References 46 publications

Estimating diversification rates for higher taxa: BAMM can give problematic estimates of rates and rate shifts

Estimating diversification rates for higher taxa: BAMM can give problematic estimates of rates and rate shifts

Eco‐evolutionary dynamics of sexual selection and sexual conflict

Sexes and species as rival units of niche saturation during community assembly

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