Concordance between stabilizing sexual selection, intraspecific variation, and interspecific divergence in<i>Phymata</i>

Punzalan, David; Rowe, Locke

doi:10.1002/ece3.2537

Cited by 10 publications

(11 citation statements)

References 132 publications

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“…Our work also adds to a small but growing number of empirical studies that have related properties of the adaptive landscape, as inferred from within‐population selective surfaces, to macroevolutionary patterns of phenotypic divergence (Chenoweth, Rundle, & Blows, ; Hohenlohe & Arnold, ; Punzalan & Rowe, ). These studies provide the exciting suggestion that in some cases microevolutionary quantitative genetics can deepen our understanding of macroevolutionary dynamics.…”

Section: Discussionmentioning

confidence: 95%

Disruptive natural selection predicts divergence between the sexes during adaptive radiation

Lisle

Rowe

2017

Ecology and Evolution

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Evolution of sexual dimorphism in ecologically relevant traits, for example, via resource competition between the sexes, is traditionally envisioned to stall the progress of adaptive radiation. An alternative view is that evolution of ecological sexual dimorphism could in fact play an important positive role by facilitating sex‐specific adaptation. How competition‐driven disruptive selection, ecological sexual dimorphism, and speciation interact during real adaptive radiations is thus a critical and open empirical question. Here, we examine the relationships between these three processes in a clade of salamanders that has recently radiated into divergent niches associated with an aquatic life cycle. We find that morphological divergence between the sexes has occurred in a combination of head shape traits that are under disruptive natural selection within breeding ponds, while divergence among species means has occurred independently of this disruptive selection. Further, we find that adaptation to aquatic life is associated with increased sexual dimorphism across taxa, consistent with the hypothesis of clade‐wide character displacement between the sexes. Our results suggest the evolution of ecological sexual dimorphism may play a key role in niche divergence among nascent species and demonstrate that ecological sexual dimorphism and ecological speciation can and do evolve concurrently in the early stages of adaptive radiation.

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Section: Discussionmentioning

confidence: 95%

Disruptive natural selection predicts divergence between the sexes during adaptive radiation

Lisle

Rowe

2017

Ecology and Evolution

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“…Lineages that underwent se-lection on size might have higher integration, and those whose selective response were not size-related might have lower integration. Also, divergence that is aligned with covariation can not be interpreted as only a product of constraints, since selection can directly reshape variation (Punzalan and Rowe 2016).…”

Section: Discussionmentioning

confidence: 99%

The evolution of phenotypic integration: How directional selection reshapes covariation in mice

et al. 2017

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Variation is the basis for evolution, and understanding how variation can evolve is a central question in biology. In complex phenotypes, covariation plays an even more important role, as genetic associations between traits can bias and alter evolutionary change. Covariation can be shaped by complex interactions between loci, and this genetic architecture can also change during evolution. In this article, we analyzed mouse lines experimentally selected for changes in size to address the question of how multivariate covariation changes under directional selection, as well as to identify the consequences of these changes to evolution. Selected lines showed a clear restructuring of covariation in their cranium and, instead of depleting their size variation, these lines increased their magnitude of integration and the proportion of variation associated with the direction of selection. This result is compatible with recent theoretical works on the evolution of covariation that take the complexities of genetic architecture into account. This result also contradicts the traditional view of the effects of selection on available covariation and suggests a much more complex view of how populations respond to selection.

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“…Developmental integration is likely to be a major constraint to phenotypic evolution (Punzalan and Rowe 2016; Simon and Marroig 2017), especially if persistent stabilizing selection associated to development counteracts directional selection. In contrast, the combination of stabilizing and divergent directional selection (i.e., selection in opposite directions on sets of traits) presents the ideal scenario for the maintenance of modularity (Melo and Marroig 2015).…”

Section: Discussionmentioning

confidence: 99%

Copulatory function and development shape modular architecture of genitalia differently in males and females

et al. 2020

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Genitalia are multitasking structures whose development is mediated by numerous regulatory pathways. This multifactorial nature provides an avenue for multiple sources of selection. As a result, genitalia tend to evolve as modular systems comprising semi‐independent subsets of structures, yet the processes that give rise to those patterns are still poorly understood. Here, we ask what are the relative roles of development and function in shaping modular patterns of genitalia within populations and across species of stink‐bugs. We found that male genitalia are less integrated, more modular, and primarily shaped by functional demands. In contrast, females show higher integration, lower modularity, and a predominant role of developmental processes. Further, interactions among parts of each sex are more determinant to modularity than those between the sexes, and patterns of modularity are equivalent between and within species. Our results strongly indicate that genitalia have been subjected to sex‐specific selection, although male and female genitalia are homologous and functionally associated. Moreover, modular patterns are seemingly constant in the evolutionary history of stink‐bugs, suggesting a scenario of multivariate stabilizing selection within each sex. Our study demonstrates that interactions among genital parts of the same sex may be more fundamental to genital evolution than previously thought.

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Concordance between stabilizing sexual selection, intraspecific variation, and interspecific divergence inPhymata

Cited by 10 publications

References 132 publications

Disruptive natural selection predicts divergence between the sexes during adaptive radiation

Disruptive natural selection predicts divergence between the sexes during adaptive radiation

The evolution of phenotypic integration: How directional selection reshapes covariation in mice

Copulatory function and development shape modular architecture of genitalia differently in males and females

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