Limited condition dependence of male acoustic signals in the grasshopper <i><scp>C</scp>horthippus biguttulus</i>

Franzke, Alexandra; Reinhold, Klaus

doi:10.1002/ece3.309

Cited by 3 publications

(2 citation statements)

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“…). Next to genetic differentiation, parental effects might be an alternative explanation, maybe acting in a similar way as it has been demonstrated for the effect of parental nutritional environment on song amplitude in this species (Franzke & Reinhold ). Heritable epigenetic effects could account for the effect of acoustic origin on the location of the local frequency maxima as well.…”

Section: Discussionmentioning

confidence: 64%

How grasshoppers respond to road noise: developmental plasticity and population differentiation in acoustic signalling

2013

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Summary1. Increasing levels of anthropogenic noise have the potential to mask signals of acoustically communicating species in their natural habitats. Animals in noise-polluted habitats typically adjust their signals away from high background noise levels to ensure successful signal transmission under challenging environmental conditions. Earlier we demonstrated that male Chorthippus biguttulus grasshoppers from roadside habitats produce courtship signals with elevated frequency components compared to conspecifics from non-roadside habitats.2. Here, we use a common garden approach to study the mechanisms underlying this response. We transferred grasshopper nymphs from seven roadside as well as five non-roadside habitats to the laboratory to rear half of them under noisy and the other half under quiet conditions in a full factorial two-by-two design. Courtship songs of adult males were later recorded under standardized quiet conditions. 3. Males exposed to road noise as nymphs produced signals with higher frequency components compared to males reared under quiet conditions, indicating developmental plasticity as a mechanism underlying the signal adjustment to anthropogenic noise in grasshoppers. 4. In addition, males originating from roadside habitats produced signals with higher frequency components and an increased syllable to pause ratio -a sexually selected signal trait -compared to males from non-roadside habitats. 5. Our results demonstrate for the first time that developmental plasticity may play an important role in song trait modifications in response to anthropogenic noise. Furthermore, they suggest that multiple roadside populations may have diverged in parallel, possibly in response to selection for minimizing signal masking by road noise.

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Section: Discussionmentioning

confidence: 64%

How grasshoppers respond to road noise: developmental plasticity and population differentiation in acoustic signalling

2013

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“…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%

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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Acoustic signalling in Orthoptera

Hall

Robinson

2021

Advances in Insect Physiology

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Acoustic communication is one of the most well-known behavioural traits of the Orthoptera. Orthopteran insects and the sounds they produce are both extremely diverse, and speciesspecific sounds are an extremely important tool in orthopteran taxonomy and systematics. For most species, acoustic signalling is the most important means of communication. It plays a vital role in mating, mate choice, intrasexual competition, interspecific interactions with predators and parasitoids, and the divergence of populations and species. The enormous diversity of the orthopterans has provided researchers with a wealth of model systems for studying anatomy, physiology, neurobiology, bioacoustics, communication, life-history traits, behaviour, evolutionary ecology, and speciation, all areas in which acoustic communication is important. We first reviewed orthopteran sound signalling nearly 20 years ago (Robinson and Hall, 2002), since when there has been an enormous amount of further work. This second review will look mainly at research published since that first review.

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

Cited by 3 publications

References 46 publications

How grasshoppers respond to road noise: developmental plasticity and population differentiation in acoustic signalling

How grasshoppers respond to road noise: developmental plasticity and population differentiation in acoustic signalling

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

Acoustic signalling in Orthoptera

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