Sexual selection on flight endurance, flight-related morphology and physiology in a scrambling damselfly

Gyulavári, Hajnalka Anna; Therry, Lieven; Stoks, Robby

doi:10.1007/s10682-014-9703-1

Cited by 18 publications

(35 citation statements)

References 57 publications

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“…Secondly, esfenvalerate negatively affected three flight‐related traits (body mass, relative flight muscle mass, and fat content) known to shape flight performance in Coenagrion damselflies (Gyulavári et al. ; Therry et al. ), thereby reducing the dispersal ability.…”

Section: Discussionmentioning

confidence: 99%

Rapid evolution of increased vulnerability to an insecticide at the expansion front in a poleward‐moving damselfly

Dinh

Janssens

Therry

et al. 2016

Evolutionary Applications

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Many species are too slow to track their poleward‐moving climate niche under global warming. Pesticide exposure may contribute to this by reducing population growth and impairing flight ability. Moreover, edge populations at the moving range front may be more vulnerable to pesticides because of the rapid evolution of traits to enhance their rate of spread that shunt energy away from detoxification and repair. We exposed replicated edge and core populations of the poleward‐moving damselfly Coenagrion scitulum to the pesticide esfenvalerate at low and high densities. Exposure to esfenvalerate had strong negative effects on survival, growth rate, and development time in the larval stage and negatively affected flight‐related adult traits (mass at emergence, flight muscle mass, and fat content) across metamorphosis. Pesticide effects did not differ between edge and core populations, except that at the high concentration the pesticide‐induced mortality was 17% stronger in edge populations. Pesticide exposure may therefore slow down the range expansion by lowering population growth rates, especially because edge populations suffered a higher mortality, and by negatively affecting dispersal ability by impairing flight‐related traits. These results emphasize the need for direct conservation efforts toward leading‐edge populations for facilitating future range shifts under global warming.

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Section: Discussionmentioning

confidence: 99%

Rapid evolution of increased vulnerability to an insecticide at the expansion front in a poleward‐moving damselfly

Dinh

Janssens

Therry

et al. 2016

Evolutionary Applications

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“…Given that sexual selection patterns can be shaped by mean phenotypic trait values (Endler, ), we predict differentiation in sexual selection on flight performance between urban and rural populations. Given the expected higher flight endurance in urban populations, and the finding that flight endurance only positively influences mating success above a threshold value in the study species (Gyulavári, Therry, Dévai, & Stoks, ), we predicted stronger sexual selection on flight endurance in urban populations.…”

Section: Introductionmentioning

confidence: 90%

“…Nevertheless, this would make our results of sexual selection conservative as it would introduce noise in the data set and make it harder to detect phenotypic differences between our samples of mated and unmated males. Despite this limitation, this technique has been successfully applied to detect signals of sexual selection in damselflies (e.g., Gosden & Svensson, ), including the study species (Gyulavári et al., ). In total, 576 males (292 mated, 284 unmated) were collected on sunny days near the border of their breeding pond (Table ).…”

Section: Methodsmentioning

confidence: 99%

Sexual selection reinforces a higher flight endurance in urban damselflies

Tüzün

Beeck

Stoks

2017

Evolutionary Applications

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Urbanization is among the most important and globally rapidly increasing anthropogenic processes and is known to drive rapid evolution. Habitats in urbanized areas typically consist of small, fragmented and isolated patches, which are expected to select for a better locomotor performance, along with its underlying morphological traits. This, in turn, is expected to cause differentiation in selection regimes, as populations with different frequency distributions for a given trait will span different parts of the species’ fitness function. Yet, very few studies considered differentiation in phenotypic traits associated with patterns in habitat fragmentation and isolation along urbanization gradients, and none considered differentiation in sexual selection regimes. We investigated differentiation in flight performance and flight‐related traits and sexual selection on these traits across replicated urban and rural populations of the scrambling damselfly Coenagrion puella. To disentangle direct and indirect paths going from phenotypic traits over performance to mating success, we applied a path analysis approach. We report for the first time direct evidence for the expected better locomotor performance in urban compared to rural populations. This matches a scenario of spatial sorting, whereby only the individuals with the best locomotor abilities colonize the isolated urban populations. The covariation patterns and causal relationships among the phenotypic traits, performance and mating success strongly depended on the urbanization level. Notably, we detected sexual selection for a higher flight endurance only in urban populations, indicating that the higher flight performance of urban males was reinforced by sexual selection. Taken together, our results provide a unique proof of the interplay between sexual selection and adaptation to human‐altered environments.

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“…), or flight endurance can increase the chances of finding a potential mate (Gyulavári et al. ). Interestingly, escaping predators may require high levels of agility (the rate at which a turn can be initiated) and speed (Hedenström and Rosén ), whereas the ability to acquire mates may depend to a greater extent on maneuverability (minimum space required for turning) or flight endurance during mate searching (Gyulavári et al.…”

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confidence: 99%

“…Interestingly, escaping predators may require high levels of agility (the rate at which a turn can be initiated) and speed (Hedenström and Rosén ), whereas the ability to acquire mates may depend to a greater extent on maneuverability (minimum space required for turning) or flight endurance during mate searching (Gyulavári et al. ). Mating success could also depend on an individual's mobility, that is, the distance it can move over its lifetime.…”

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confidence: 99%

Antagonistic natural and sexual selection on wing shape in a scrambling damselfly

et al. 2016

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Wings are a key trait underlying the evolutionary success of birds, bats, and insects. For over a century, researchers have studied the form and function of wings to understand the determinants of flight performance. However, to understand the evolution of flight, we must comprehend not only how morphology affects performance, but also how morphology and performance affect fitness. Natural and sexual selection can either reinforce or oppose each other, but their role in flight evolution remains poorly understood. Here, we show that wing shape is under antagonistic selection with regard to sexual and natural selection in a scrambling damselfly. In a field setting, natural selection (survival) favored individuals with long and slender forewings and short and broad hindwings. In contrast, sexual selection (mating success) favored individuals with short and broad forewings and narrow-based hindwings. Both types of selection favored individuals of intermediate size. These results suggest that individuals face a trade-off between flight energetics and maneuverability and demonstrate how natural and sexual selection can operate in similar directions for some wing traits, that is, wing size, but antagonistically for others, that is, wing shape. Furthermore, they highlight the need to study flight evolution within the context of species' mating systems and mating behaviors.

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Sexual selection on flight endurance, flight-related morphology and physiology in a scrambling damselfly

Cited by 18 publications

References 57 publications

Rapid evolution of increased vulnerability to an insecticide at the expansion front in a poleward‐moving damselfly

Rapid evolution of increased vulnerability to an insecticide at the expansion front in a poleward‐moving damselfly

Sexual selection reinforces a higher flight endurance in urban damselflies

Antagonistic natural and sexual selection on wing shape in a scrambling damselfly

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