Sexual selection in a moth: effect of symmetry on male mating success in the wild

Koshio, Chiharu; Muraji, Makoto; Tatsuta, Haruki; Kudo, Shinichi

doi:10.1093/beheco/arm017

Cited by 27 publications

(14 citation statements)

References 73 publications

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“…For example, Otronen () found significant directional selection for smaller claspers in the fly Dryomyza anilis , whereas Koshio et al . () found no significant directional sexual selection operating on them in Elcysma westwoodii moths. Similar to the present study, paired and unpaired male yellow dung flies ( Scathophaga stercoraria ) did not differ in clasper size (Blanckenhorn, Kraushaar & Reim, ).…”

Section: Discussionsupporting

confidence: 87%

“…Despite the importance of genital claspers to male fitness in many arthropods (Moreno-García & Cordero, 2008), a general pattern of the strength, direction, and form of sexual selection operating on them has yet to emerge because only a handful of studies have studied them in a behavioural ecological context. For example, Otronen (1998) found significant directional selection for smaller claspers in the fly Dryomyza anilis, whereas Koshio et al (2007) found no significant directional sexual selection operating on them in Elcysma westwoodii moths. Similar to the present study, paired and unpaired male yellow dung flies (Scathophaga stercoraria) did not differ in clasper size (Blanckenhorn, Kraushaar & Reim, 2003).…”

Section: The Form and Strength Of Selectionmentioning

confidence: 93%

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Sexual selection, phenotypic variation, and allometry in genitalic and non-genitalic traits in the sexually size-dimorphic stick insectMicrarchus hystriculeus

Kelly

2014

Biol J Linn Soc Lond

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The mobility hypothesis could explain the evolution of female‐biased size dimorphism if males with a smaller body size and longer legs have an advantage in scramble competition for mates. This hypothesis is tested by performing a selection analysis in the wild on Micrarchus hystriculeus (Westwood) (Phasmatodea), a sexually size dimorphic stick insect endemic to New Zealand. This analysis examined the form and strength of sexual selection on body size, leg lengths (front, mid and hind), and clasper size (a genitalic trait), and also quantified the degree of phenotypic variation and the allometric scaling pattern of these traits. By contrast to the mobility hypothesis, three lines of evidence were found to support significant stabilizing sexual selection on male hind leg length: a significant nonlinear selection gradient, negative static allometry, and a low degree of phenotypic variation. Hind leg length might be under stabilizing selection in males if having average‐sized legs facilitates female mounting or improves a male's ability to achieve the appropriate copulation position. As predicted, a negative allometric scaling pattern and low phenotypic variation of clasper size is suggestive of stabilizing selection and supports the ‘one‐size‐fits‐all’ hypothesis. Opposite to males, the mid and hind leg lengths of females showed positive static allometry. Relatively longer mid and hind leg lengths in larger females might benefit individuals via the better support of their larger abdomens. © 2014 The Linnean Society of London, Biological Journal of the Linnean Society, 2014, 113, 471–484.

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Section: Discussionsupporting

confidence: 87%

Section: The Form and Strength Of Selectionmentioning

confidence: 93%

Sexual selection, phenotypic variation, and allometry in genitalic and non-genitalic traits in the sexually size-dimorphic stick insectMicrarchus hystriculeus

Kelly

2014

Biol J Linn Soc Lond

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“…This possible cause of negative size-FA scaling is referred to as the ''quality heterogeneity'' hypothesis (Polak and Starmer 2005). The predicted negative relationship between size and FA have been reported for traits subject to mate choice and intrasexual selection (Møller 1990(Møller , 1992c(Møller , 1993c(Møller , 1994Møller and Höglund 1991;Manning and Chamberlain 1993;Schlüter et al 1998;Koshio et al 2007), and Møller and Cuervo (2003) provide data suggesting that the size-FA relationship becomes more negative as intensity of sexual selection for trait size increases across species.…”

Section: Developmental Instability Should Be Negatively Correlated Wimentioning

confidence: 99%

“…Negative associations have been found between FA and a range of correlates of reproductive success, including sexual attractiveness (Møller 1992a;Thornhill 1992a;Gong and Gibson 1996;Sheridan and Pomiankowski 1997;Simmons et al 2004;Brown et al 2005), female reproductive rate (Forkman and Corr 1996), competitive ability (Thornhill 1992b;Møller and Zamora-Muñoz 1997;Bateman 2000), copulation probability and/or rate (Møller and Zamora-Muñoz 1997;Carchini et al 2000;Santos 2001;Cooley 2004;Koshio et al 2007), mating speed (Radesäter and Halldórsdóttir 1993;Polak and Stillabower 2004), ejaculate quality (Manning et al 1998;Roldan et al 1998;Farmer and Barnard 2000;Gomendio et al 2000;Firman et al 2003), competitive fertilization success (Otronen 1998), courtship gift quality (Thornhill 1992b), and estimated lifetime breeding success (Harvey and Walsh 1993;Kruuk et al 2003).…”

Section: Developmental Instability Should Be Negatively Correlated Wimentioning

confidence: 99%

The Developmental Instability—Sexual Selection Hypothesis: A General Evaluation and Case Study

Polák

2008

Evol Biol

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Developmental instability results from small, random perturbations to developmental processes of individual traits. Phenotypic outcomes of developmental instability include fluctuating asymmetry (FA, subtle deviations from perfect bilateral symmetry) and phenodeviance (minor morphological abnormalities). A great deal of research over the past 18 years has focused on the role of developmental instability in sexual selection. A driving force behind this research has been the developmental instabilitysexual selection hypothesis, which posits that symmetry and lack of phenodeviance in secondary sexual traits are assessed by mates and rivals because they provide a reliable cue of individual genetic quality. The present article tests this hypothesis by evaluating its five main predictions using published results: expressions of developmental instability in secondary sexual traits should be (1) negatively correlated with mating success; (2) directly assessed by mates and sexual rivals; (3) heritable; (4) condition-dependent; and (5) negatively correlated with ornament size. The first two predictions receive considerable, though not ubiquitous, support from a range of animal species. However, FA in secondary sexual traits is generally not significantly heritable, indicating that FA is unlikely to reveal genetic quality that can be transmitted to offspring. Similarly, there is little evidence to support the predictions that FA is condition dependent, and that it is negatively phenotypically or genetically correlated with sexual trait size. Based on an evaluation of the evidence overall, it is concluded that this hypothesis is unlikely to be viable; it appears unlikely that mate choice for symmetry evolves by ''good genes'' sexual selection. Hypotheses that do not require asymmetry and phenodeviance to reveal heritable genetic quality may explain observed links between FA/phenodeviance and mating success. Results of a case study of Drosophila bipectinata are summarized, which reinforce this general conclusion. It is suggested that nonadditive genetic variation arising from an interaction between trait-specific developmental genes and genetic background may drive sexual selection for reducing developmental instability in some cases. Levels of developmental instability variation in a population may need to surpass a critical threshold for sexual selection to operate, possibly explaining some of the pronounced heterogeneity in the effect of developmental instability on sexual selection reported in the literature.

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“…The first of these assumptions appears to be supported, on average. Studies often (but do not always) find negative associations between asymmetry and reproductive success (Koshio et al 2007;Vishalakshi and Singh 2008;Jaffe and Moritz 2010;Pavkovic-Luaic and Kekie 2011). Similarly, studies often (but do not always) find negative associations between asymmetry and measures of survival probability (Leung and Forbes 1996;Moller 1999;Vishalakshi and Singh 2008).…”

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confidence: 99%

Strong nonlinear selection against fluctuating asymmetry in wild populations of a marine fish

2016

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Theoretical links between fluctuating asymmetry (FA) and fitness have led many to use FA as a proxy for average fitness. However, studies examining whether asymmetry actually correlates with individual fitness in wild populations are relatively rare and often use simple measures of association (e.g., correlation coefficients). Consequently, the pattern of selection on asymmetry in the wild is seldom clear. We examined selection on FA of pectoral fin morphology in two wild populations of a marine fish (the kelp perch; Brachyistius frenatus). As expected, variance in signed FA in each initial sample was significantly greater than that found in the surviving population, indicating selection against FA. Our estimate of the fitness surface confirmed perfect symmetry as the phenotypic optimum and indicated strong, nonlinear selection against asymmetry. No difference in the form of selection was detected between populations. However, the level of FA in the initial samples varied among populations, leading to an overall difference in the level of selective mortality. Our results suggest that selection on asymmetry in wild populations may be strongly nonlinear, and indicate that the demographic costs of asymmetry may play a substantial role in the dynamics of populations.

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Sexual selection in a moth: effect of symmetry on male mating success in the wild

Cited by 27 publications

References 73 publications

Sexual selection, phenotypic variation, and allometry in genitalic and non-genitalic traits in the sexually size-dimorphic stick insectMicrarchus hystriculeus

Sexual selection, phenotypic variation, and allometry in genitalic and non-genitalic traits in the sexually size-dimorphic stick insectMicrarchus hystriculeus

The Developmental Instability—Sexual Selection Hypothesis: A General Evaluation and Case Study

Strong nonlinear selection against fluctuating asymmetry in wild populations of a marine fish

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