Acoustic preference functions and sexual selection on the male calling song in the grasshopper Chorthippus biguttulus

Klappert, Kirsten; Reinhold, Klaus

doi:10.1006/anbe.2002.2034

Cited by 72 publications

(78 citation statements)

References 23 publications

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“…The averaging of independently calculated ranks implies that we give equal weights to the different contributors of attractiveness. This is unlikely to be strictly fulfilled, but at least amplitude, syllable-to-pause ratio, and duration of gaps seemed to contribute roughly equally to song attractiveness, and when rank-averaged together explained R 2 = 0.31 of variation in attractiveness (Klappert and Reinhold 2003), although the same measure of attractiveness predicted 75% of all copulations in binary choice trials (Klappert and Reinhold 2005). From the top and bottom quarter of the song attractiveness distribution, we selected 24 of the most attractive and 24 of the least attractive individuals, respectively, for genome size quantification (Fig.…”

Section: Ranking By Song Attractivenessmentioning

confidence: 92%

“…Amplitude, syllable-to-pause ratio, and duration of gaps were found to correlate with female response songs across a range of natural male songs from the same population (standardized partial linear sexual selection gradients of β = 0.199, β = 0.123, and β = 0.124, respectively, Klappert and Reinhold 2003). The role of the presence/absence of gaps on sex identification and attractiveness had been known for some time (von Helversen 1972;von Helversen and von Helversen 1997).…”

Section: Ranking By Song Attractivenessmentioning

confidence: 93%

“…Response songs in the choice chamber have been shown to predict actual copulations (Klappert andReinhold 2003, 2005). Based on a review of the relevant literature, we extracted five song parameters that are known to contribute to song attractiveness: amplitude, syllable-to-pause ratio, duration of gaps within phrases, onset accentuation, and offset depth (Fig.…”

Section: Ranking By Song Attractivenessmentioning

confidence: 99%

“…Quantification of the five song characteristics was automated by a custom-made Matlab script that we had used previously (Klappert and Reinhold 2003;Franzke and Reinhold 2012). All song parameters were estimated by extracting the root mean square amplitude envelope of a phrase with an integration time of a third of a millisecond.…”

Section: Ranking By Song Attractivenessmentioning

confidence: 99%

“…This species of Acridid grasshopper, like most members of the Orthopterans, produces costly courtship songs that are known to reflect condition and health of an individual (Kriegbaum 1989;Stange and Ronacher 2012a). Female grasshoppers choose mates based on temporal characteristics and amplitude of male songs, imposing strong sexual selection on male courtship signals (Klappert and Reinhold 2003;Ronacher and Stange 2012). Courtship songs are therefore a candidate signal that can reflect variation in genome size via its effect on overall condition.…”

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Genome size variation affects song attractiveness in grasshoppers: Evidence for sexual selection against large genomes

et al. 2014

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Genome size is largely uncorrelated to organismal complexity and adaptive scenarios. Genetic drift as well as intragenomic conflict have been put forward to explain this observation. We here study the impact of genome size on sexual attractiveness in the bow-winged grasshopper Chorthippus biguttulus. Grasshoppers show particularly large variation in genome size due to the high prevalence of supernumerary chromosomes that are considered (mildly) selfish, as evidenced by non-Mendelian inheritance and fitness costs if present in high numbers. We ranked male grasshoppers by song characteristics that are known to affect female preferences in this species and scored genome sizes of attractive and unattractive individuals from the extremes of this distribution.We find that attractive singers have significantly smaller genomes, demonstrating that genome size is reflected in male courtship songs and that females prefer songs of males with small genomes. Such a genome size dependent mate preference effectively selects against selfish genetic elements that tend to increase genome size. The data therefore provide a novel example of how sexual selection can reinforce natural selection and can act as an agent in an intragenomic arms race. Furthermore, our findings indicate an underappreciated route of how choosy females could gain indirect benefits.

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Section: Ranking By Song Attractivenessmentioning

confidence: 92%

Section: Ranking By Song Attractivenessmentioning

confidence: 93%

Section: Ranking By Song Attractivenessmentioning

confidence: 99%

Section: Ranking By Song Attractivenessmentioning

confidence: 99%

mentioning

confidence: 99%

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Genome size variation affects song attractiveness in grasshoppers: Evidence for sexual selection against large genomes

et al. 2014

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Sex‐specific repeatabilities and effects of relatedness and mating status on copulation duration in an acridid grasshopper

Haneke-Reinders

Reinhold

Schmoll

2017

Ecology and Evolution

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In species with direct sperm transfer, copulation duration is a crucial trait that may affect male and female reproductive success and that may vary with the quality of the mating partner. Furthermore, traits such as copulation duration represent the outcome of behavioral interactions between the sexes, for which it is important—but often difficult—to determine which sex is in phenotypic control. Using a double‐mating protocol, we compared copulation durations between (1) virgin and nonvirgin and (2) sibling and nonsibling mating pairs in rufous grasshoppers Gomphocerippus rufus. Nonvirgin copulations took on average approximately 30% longer than virgin copulations, whereas relatedness of mating partners was not a significant predictor of copulation duration. Longer nonvirgin copulations may represent a male adaptation to sperm competition if longer copulations allow more sperm to be transferred or function as postinsemination mate guarding. The absence of differences between pairs with different degrees of relatedness suggests no precopulatory or preinsemination inbreeding avoidance mechanism has evolved in this species, perhaps because there is no inbreeding depression in this species, or because inbreeding avoidance occurs after copulation. Controlling for the effects of male and female mating status (virgin vs. nonvirgin) and relatedness (sibling vs. nonsibling), we found significant repeatabilities (R) in copulation duration for males (R = 0.33; 95% CI: 0.09–0.55) but not for females (R = 0.09; 95% CI: 0.00–0.30). Thus, copulation durations of males more strongly represent a nontransient trait expressed in a consistent manner with different mating partners, suggesting that some aspect of the male phenotype may determine copulation duration in this species. However, overlapping confidence intervals for our sex‐specific repeatability estimates indicate that higher sampling effort is required for conclusive evidence.

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Limited condition dependence of male acoustic signals in the grasshopper Chorthippus biguttulus

Franzke

Reinhold

2012

Ecology and Evolution

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In many animal species, male acoustic signals serve to attract a mate and therefore often play a major role for male mating success. Male body condition is likely to be correlated with male acoustic signal traits, which signal male quality and provide choosy females indirect benefits. Environmental factors such as food quantity or quality can influence male body condition and therefore possibly lead to condition‐dependent changes in the attractiveness of acoustic signals. Here, we test whether stressing food plants influences acoustic signal traits of males via condition‐dependent expression of these traits. We examined four male song characteristics, which are vital for mate choice in females of the grasshopper Chorthippus biguttulus. Only one of the examined acoustic traits, loudness, was significantly altered by changing body condition because of drought‐ and moisture‐related stress of food plants. No condition dependence could be observed for syllable to pause ratio, gap duration within syllables, and onset accentuation. We suggest that food plant stress and therefore food plant quality led to shifts in loudness of male grasshopper songs via body condition changes. The other three examined acoustic traits of males do not reflect male body condition induced by food plant quality.

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Acoustic preference functions and sexual selection on the male calling song in the grasshopper Chorthippus biguttulus

Cited by 72 publications

References 23 publications

Genome size variation affects song attractiveness in grasshoppers: Evidence for sexual selection against large genomes

Genome size variation affects song attractiveness in grasshoppers: Evidence for sexual selection against large genomes

Sex‐specific repeatabilities and effects of relatedness and mating status on copulation duration in an acridid grasshopper

Limited condition dependence of male acoustic signals in the grasshopper Chorthippus biguttulus

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