@article {58055, title = {MATE CHOICE IN TREE CRICKETS AND THEIR KIN}, year = {1999}, abstract = {

Mate choice theory has become a major field of research in behavioral ecology. Tree crickets provide excellent opportunities for studying the diversity and variability of mate choice. The evidence for female mate choice in tree crickets is reviewed, and broad comparisons with other orthopteran groups are made. The evidence shows that female choice may occur during several different stages of mating and may target several different criteria. Song preferences are perhaps dominated by stabilizing preferences for the cues of species recognition, but there is a growing body of evidence for directional preferences based on sensory biases or mate quality. Mate rejection during courtship and forms of postcopulatory choice may favor males, based both on phenotypic quality and on the amount of nutritious courtship gifts they provide, and may differ with the value of mating incentives. Understanding the balance and trade-offs between different forms of mate choice may help in understanding their evolutionary causes.

}, keywords = {courtship feeding, Female choice, Gryllidae, Orthoptera, sexual selection}, doi = {10.1146/annurev.ento.44.1.371}, url = {http://www.annualreviews.org/doi/10.1146/annurev.ento.44.1.371}, author = {Brown, W. D.} } @article {57610, title = {Noisy neighbours among the selfish herd: a critical song distance mediates mate recognition within cicada emergences (Hemiptera: Cicadidae)Abstract}, year = {2019}, abstract = {

Cicadas probably experience mate recognition challenges as a result of the densities that may occur during adult emergence events, and in Okanagana, the most speciose genus of North American cicadas, high alpha diversities during protoperiodical emergences will exacerbate the mate recognition problem. Using 227 songs from 23 taxa, a linear plateau model regressed recognition potential, estimated from linear discriminant analysis, against song distance, revealing a critical song distance of 0.728 standard deviations in z-transformed song parameter space accompanied by a recognition of 91.6\%. Based on detailed examination of museum specimen localities, field observations and habitat, taxa were classified as sympatric or allopatric. Sympatric species were separated by song distances that were significantly greater than this critical distance. As expected for mate recognition characters, little within-species variance was observed in the songs of most species, and the relationship between increases in syllable rate and improved recognition was one of diminishing returns. For several taxa that sang with extreme syllable rates of high variance, a mate recognition \– sexual selection continuum is proposed. Along this continuum rapid rates simultaneously prevent mate recognition errors while signalling male quality to females.

}, keywords = {California, female preference, indicator trait, linear discriminant function, linear plateau analysis, Okanagana, receiver bias, sexual selection}, doi = {10.1093/biolinnean/blz132}, url = {https://academic.oup.com/biolinnean/advance-article/doi/10.1093/biolinnean/blz132/5602697}, author = {Chatfield-Taylor, Will and Jeffrey A. Cole} } @article {53376, title = {Convenience polyandry and the role of lone and reciprocal calls in a psyllid}, journal = {Animal Behaviour}, volume = {145}, year = {2018}, month = {Jan-11-2018}, pages = {1 - 10}, abstract = {

It is widely accepted that receptivity to mating may be asymmetrical between the sexes. While reproductive benefits for males are cumulative, females may not benefit equally from polyandry, especially in species where females can store sperm. Female psyllids (Hemiptera: Psylloidea) are reportedly polyandrous. However, the adaptive significance of this mating strategy has not been thoroughly investigated. Studies involving other insect species indicate that polyandry may be driven by benefits (direct or indirect) or by the need to minimize costs associated with male harassment. Drooping she-oak psyllids, Aacanthocnema dobsoni (Triozidae), use substrate-borne vibrations for mate attraction but they are not a prerequisite for mating. We suspected that polyandry in this species could be driven by male harassment because males exhibit indiscriminate mating behaviour (consistent with a scramble competition mating strategy), often mating with unresponsive (mated) females. We investigated relationships between calling, feeding and mating status to test whether females mate to minimize harassment by males and whether they gain any direct benefits from polyandry. We found that lone calls were commonly, but reciprocal calls were rarely followed by mating. As reciprocal calls should reflect female receptivity, copulations without them highlight the existence of sexual conflict over mating. Observations revealed that feeding females were less likely to resist mating than nonfeeding females. We did not find that females obtained any direct benefits from polyandry. Our results suggest that polyandry in this species may be a consequence of male harassment and that mated females, while feeding, may remate for convenience to minimize costs associated with stylet retraction/penetration and location of new feeding sites.

}, keywords = {economics of mating, feeding requirements, Psylloidea, reproductive success, sexual conflict, sexual selection}, issn = {00033472}, doi = {10.1016/j.anbehav.2018.09.001}, url = {https://linkinghub.elsevier.com/retrieve/pii/S0003347218302707https://api.elsevier.com/content/article/PII:S0003347218302707?httpAccept=text/xmlhttps://api.elsevier.com/content/article/PII:S0003347218302707?httpAccept=text/plain}, author = {Lubanga, U.K. and Peters, R.A. and Steinbauer, M.J.} } @article {52753, title = {The {\textquoteleft}hot male{\textquoteright} hypothesis: do female crickets prefer males with increased body temperature in mate choice scenarios?}, journal = {Animal Behaviour}, volume = {138}, year = {2018}, month = {Jan-04-2018}, pages = {75 - 84}, abstract = {

Insects have been extensively used as model systems to study mating preferences based on variation in acoustic signals. In many species, females perform phonotaxis towards attractive, long-range acoustic signals produced by males, whereas the final mating decision is based on an assessment of additional, multimodal, close-range cues. The production of acoustic signals is costly, because invested energy is inefficiently converted into acoustic power. Here, we investigated whether heat released as a by-product during song generation might serve as an additional cue during mate choice decisions. Males that broadcast highly energetic calling songs increased their thoracic temperature considerably above ambient temperatures. The use of this additional cue would turn the acoustic signal into an inherently bimodal one, indirectly indicating the quality of the sender. To test this hot male hypothesis, we performed trackball and Y-maze experiments with Anurogryllus muticus. For comparison, additional trackball experiments were conducted with Gryllus bimaculatus females. In all paradigms, females of both species showed no evidence of a preference for hot males and, therefore, we conclude that increases in thoracic temperature do not seem to play a role as a multimodal component in mate choice decisions in A. muticus.

}, keywords = {acoustic signals, Anurogryllus muticus, energy, Female choice, infrared thermography, male quality, multimodal communication, sexual selection, thermal cues, thoracic temperature increase}, issn = {00033472}, doi = {10.1016/j.anbehav.2018.02.007}, url = {http://linkinghub.elsevier.com/retrieve/pii/S0003347218300575}, author = {Erregger, Bettina and Hennig, R. Matthias} } @article {52579, title = {Mate choice intensifies motor signalling in Drosophila}, journal = {Animal Behaviour}, volume = {133}, year = {2017}, month = {Jan-11-2017}, pages = {169 - 187}, abstract = {

Mate choice has the potential to act on the evolution of motor performance via its direct influence on motor sexual signals. However, studies demonstrating this are rare. Here, we performed an in-depth analysis of Drosophila pseudoobscura courtship song rate, a motor signal under mate choice in this species, and analysed the response of this signal to sexual selection manipulation using experimental evolution. We show that manipulating the opportunity for sexual selection led to changes in song production rate and singing endurance, with males from the polyandrous populations producing faster song rates over longer time periods than males from monogamous populations. We also show that song rate was correlated with estimates of overall courtship vigour. Our results suggest that the action of mate choice on a motor signal has affected male motor performance displayed during courtship. We consider potential selective benefits associated with changes in motor performance, including condition- dependent signalling, and discuss the implications of these results for the study of motor signals un- der sexual selection.

}, keywords = {courtship song, Drosophila pseudoobscura, experimental evolution, interpulse interval, mate choice, motor performance, sexual selection}, issn = {00033472}, doi = {10.1016/j.anbehav.2017.09.014}, url = {http://linkinghub.elsevier.com/retrieve/pii/S0003347217303019}, author = {Debelle, Allan and Courtiol, Alexandre and Ritchie, Michael G. and Snook, Rhonda R.} } @article {50521, title = {Inheritance of song and stridulatory peg number divergence between Chorthippus brunneus and C. jacobsi, two naturally hybridizing grasshopper species (Orthoptera: Acrididae)}, journal = {Journal of Evolutionary Biology}, volume = {18}, year = {2005}, month = {Jan-05-2005}, pages = {703 - 712}, abstract = {

Knowledge of the genetic basis of divergence in mating signal characters that contribute to reproductive isolation is critical to understanding speciation. Here, we describe a semi-automated system for characterizing grasshopper acoustic signals. We used this system to study the genetic basis of divergence in three male calling song components [echeme (EL), syllable (SL) and phrase (PL) lengths] between Chorthippus brunneus and C. jacobsi , two species of grasshoppers that hybridize in northern Spain. We also studied the number of pegs in the stridulatory file. For all characters, additive effects accounted for most of the genetic differentiation between species. However, the three song components also showed small but significant epistatic effects. No sex linkage was detected. Wright\–Castle\–Lande estimates of the minimum numbers of genetic factors underlying song and peg number divergence were low: peg number ( n e \¼ 5.87 \± 5.84), SL ( n e \¼ 2.37 \± 4.79) and PL ( n e \¼ 0.87 \± 0.86). On the other hand, EL appeared to be controlled by many genes. These results suggest that divergence in SL and PL might be driven by sexual selection whereas EL might not be under selection. This is consistent with experimental results on female song preference in related species. However, the fact that few factors appear to underlie the differences in peg number is surprising. Peg number is not closely related to song characteristics. It often varies between closely related grasshopper species and it has been assumed to be a neutral character. The biometrical approaches used here tend to underestimate the number of factors influencing a trait but provide valuable background for subsequent quantitative trait loci analyses.

}, keywords = {additive effects, dominance effects, effective number of factors, epistasis, mosaic hybrid zones, quantitative trait loci, sexual selection, wavelet transformation}, doi = {10.1111/jeb.2005.18.issue-310.1111/j.1420-9101.2004.00838.x}, url = {http://blackwell-synergy.com/doi/abs/10.1111/jeb.2005.18.issue-3}, author = {C. I. Sadamando and S. Miyaguchi and H. Tatsuta and H. Kishino and J. R. Bridle and R. K. Butlin} } @article {50484, title = {Divergent mechanisms of acoustic mate recognition between closely related field cricket species ( Teleogryllus spp.)}, journal = {Animal Behaviour}, volume = {130}, year = {2017}, month = {Jan-08-2017}, pages = {17 - 25}, abstract = {

Effective recognition of conspeci fi c mating signals reduces the risk of maladaptive hybridization. Dis- secting the signal recognition algorithms that underlie preferences is a useful approach for testing whether closely related taxa evaluate the same or different signal features to achieve mate recognition. Such data provide information about potential constraints and targets of selection during evolutionary divergence. Using a series of mate choice trials, we tested whether closely related, but genetically and phenotypically divergent, fi eld cricket species ( Teleogryllus oceanicus and Teleogryllus commodus ) use shared or distinct recognition algorithms when evaluating acoustic male calling songs. These species overlap in sympatry, show premating isolation based on female discrimination of male calling songs, yet are capable of producing hybrid offspring. Unexpectedly, female selectivity for features of male song differed between the two species. We found that the two species use a combination of shared and unique signal fi ltering mechanisms, and we characterized how information about male carrier frequency, pulse rate and temporal patterning is integrated to achieve song recognition in each species. These results illustrate how comparatively few, simple modi fi cations in key components of signal recognition algo- rithms can lead to striking interspeci fi c discrimination between closely related taxa, despite apparent signal complexity. The fi nding that some steps during signal recognition and fi ltering are shared between the species, while others differ, can help to identify behavioural traits targeted by selection during evolutionary divergence

}, keywords = {acoustic communication, divergence, female preference, mate recognition, reproductive isolation, sexual selection, speciation, Teleogryllus}, issn = {00033472}, doi = {10.1016/j.anbehav.2017.06.007}, url = {http://linkinghub.elsevier.com/retrieve/pii/S0003347217301823}, author = {Nathan W. Bailey and R. Matthias Hennig} } @article {47779, title = {Effects of juvenile and adult condition on long-distance call components in the Jamaican field cricket, Gryllus assimilis}, journal = {Animal Behaviour}, volume = {81}, year = {2011}, month = {Jan-01-2011}, pages = {135 - 144}, abstract = {

Complex signals may arise through either content- or efficacy-based selection. Content-based signals are thought to evolve because of the information content they provide to the receiver. Such signals may function as multiple messages, each relaying different information or types of information. For example, some signals or signal components may indicate different aspects of condition, or condition at different life stages (quality signals), while others relay information on signaller location, or function in species recognition. Or they may act as redundant signals of overall condition, or as backup signals of the same aspect of condition. Efficacy-based signals are proposed to evolve because of the way in which they influence the production, transmission, reception or processing of the signal. We manipulated juvenile and adult condition in male Jamaican field crickets, Gryllus assimilis, to test whether changes in components of the male\’s long-distance acoustic mate attraction signal were consistent with content- or efficacy-based selection. Several call components exhibited condition-dependence, and may be under content-based selection. Interpulse duration, pulse rate and chirp duration appeared to honestly signal juvenile condition, while dominant frequency appeared to signal adult condition. Thus, these signal components appeared to be acting as multiple messages of quality. Pulse number, interchirp duration and chirp rate were highly stereotyped and probably function in species recognition. Call number increased with decreasing condition and was likely under efficacy-based selection. No call components appeared to have the potential to act as redundant signals.

}, keywords = {acoustic signal, complex signal, condition-dependence, content, efficacy, Field cricket, multiple messages, multiple signals, redundant signal, sexual selection}, issn = {00033472}, doi = {10.1016/j.anbehav.2010.09.024}, url = {http://linkinghub.elsevier.com/retrieve/pii/S0003347210003933}, author = {Whattam, Emily M. and Bertram, Susan M.} } @article {47593, title = {Male{\textendash}male courtship behaviour, not relatedness, affects the intensity of contest competition in the field cricket}, journal = {Animal Behaviour}, volume = {126}, year = {2017}, month = {Jan-04-2017}, pages = {217 - 220}, abstract = {

Males often compete intensely against rival males because access to females is a major factor contrib- uting to their reproductive success. However, there is controversy over whether maleemale competition is weakened when rival males are related, with reduced aggressiveness leading to inclusive fitness benefits. Furthermore, same-sex sexual behaviour is also expected to mitigate maleemale contests. Here, I examined how relatedness, developmental familiarity (i.e. males reared in the same container or not) and same sex sexual behaviour affect the intensity of maleemale competition in wild-caught field crickets, Teleogryllus occipitalis. Relatedness and familiarity had no significant effect on the intensity of maleemale contest behaviour. However, same-sex sexual behaviour did weaken maleemale competi- tion. In conclusion, my results indicate that same-sex sexual behaviour in this cricket has adaptive sig- nificance by mitigating risky maleemale contest behaviour.

}, keywords = {intrasexual competition, kin selection, same-sex sexual behaviour, sexual selection, Teleogryllus occipitalis}, issn = {00033472}, doi = {10.1016/j.anbehav.2017.02.009}, url = {http://linkinghub.elsevier.com/retrieve/pii/S0003347217300465}, author = {Kuriwada, Takashi} } @article {20904, title = {Evolutionary diversification of the auditory organ sensilla in Neoconocephalus katydids (Orthoptera: Tettigoniidae) correlates with acoustic signal diversification over phylogenetic relatedness and life history}, journal = {Journal of Evolutionary Biology}, year = {2017}, month = {Jan-03-2017}, abstract = {

Neoconocephalus tettigoniids are a model for the evolution of acoustic signals as male calls have diversified in temporal structure during the radiation of the genus. Tettigoniidae have hearing organs in the forelegs with species-specific numbers of auditory sensilla in a linear crista acustica. We investigated changes of the hearing organs during an evolutionary radiation with divergence of intraspecific acoustic signals. We compared the neuroanatomy of the crista acustica from 9 Neoconocephalus species with different temporal call features, life histories, and from different phylogenetic positions. Average numbers of auditory sensilla were species-specific, ranging between 32\–35 sensilla. It is likely under sexual selection for detection of male calls and natural selection for detection of bat calls. We found statistically significant differences in sensillum numbers among species, but no relationship of crista acustica length or sensillum number with phylogenetic position or life history. Statistically significant correlations existed with call patterns: species with slow pulse rates had significantly higher numbers of auditory sensilla and a longer crista acustica. Further, species with a derived double-pulsed calls had longer cristae, and continuous callers had a higher number of auditory sensilla. Correlations with crista length were stronger than with the number of auditory sensilla. The hearing organs show considerable diversity between species despite their recent divergence and morphological and ecological similarities. Thus, they have the potential to respond to various selective pressures, including divergence of temporal and spectral signal properties. Phylogenetic constraints are unlikely to limit the evolutionary change of the auditory systems.

}, keywords = {hearing organ, insects, radiation, sensory evolution, sexual selection, signal evolution, tympanal organ}, doi = {10.1111/jeb.13066}, url = {http://doi.wiley.com/10.1111/jeb.13066}, author = {Strau{\ss}, Johannes and Alt, Joscha A. and Ekschmitt, Klemens and Schul, Johannes and Lakes-Harlan, Reinhard} } @article {16466, title = {Acoustic preference functions and song variability in the Hawaiian cricket Laupala cerasina}, journal = {Proceedings of the Royal Society B: Biological Sciences}, volume = {267}, year = {2000}, month = {Oct-03-2001}, pages = {577 - 584}, abstract = {

Female preference functions for di\¡erent sexual traits can di\¡er signi\¢cantly, from {\textquoteleft}unimodal\’ to {\textquoteleft}open ended\’. Through the study of acoustic communication in anurans, several studies have reported an association between static (stereotyped) traits versus dynamic (variable) traits and preference function shape (unimodal versus open ended, respectively). Observing a similar pattern in a phylogenetically independent group would suggest that deterministic forces have caused a relationship between signal variability and preference function shape in acoustic signalling systems. We examined this phenomenon in crickets, another animal characterized by intersexual acoustic communication. We measured the within- male variability for three acoustic features of the male calling song in Laupala cerasina and the corresponding shape of the female preference function for each of these features. We o\¡er support for the generalization that open-ended preference functions correspond to relatively dynamic courtship traits and unimodal preference functions correspond to relatively static courtship traits. We discuss the evolutionary signi\¢cance of these \¢ndings in the context of the natural history of the Laupala species radiation.

}, keywords = {acoustic communication, crickets, mate recognition, preference, sexual selection, song}, issn = {0962-8452}, doi = {10.1098/rspb.2000.1040}, url = {http://rspb.royalsocietypublishing.org/cgi/doi/10.1098/rspb.2000.1040}, author = {Shaw, K. L. and Herlihy, D. P.} }