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Hirtenlehner S, Römer H. Selective phonotaxis of female crickets under natural outdoor conditions. J Comp Physiol A Neuroethol Sens Neural Behav Physiol 2014; 200:239-50. [PMID: 24488017 PMCID: PMC3929774 DOI: 10.1007/s00359-014-0881-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Revised: 01/07/2014] [Accepted: 01/10/2014] [Indexed: 10/27/2022]
Abstract
Acoustic mate choice in insects has been extensively studied under laboratory conditions, using different behavioural paradigms. Ideally, however, mate choice designs should reflect natural conditions, including the physical properties of the transmission channel for the signal. Since little is known about the discrimination ability of females between male song variants under natural conditions, we performed phonotaxis experiments with female field crickets (Gryllus bimaculatus) outdoors, using two-choice decisions based on differences in carrier frequency, sound pressure level, and chirp rate. For all three song parameters, minimum differences necessary for a significant preference between two song models were considerably larger outdoors compared to laboratory conditions. A minimum amplitude difference of 5 dB was required for a significant choice in the field, compared to only 1-2 dB reported for lab-based experiments. Due to the tuned receiver system, differences in carrier frequency equal differences in perceived loudness, and the results on choice for differences in carrier frequency corroborate those in amplitude. Similarly, chirp rate differences of 50 chirps/min were required outdoors compared to only 20 chirps/min in the lab. For predictions about patterns of sexual selection, future studies need to consider the different outcomes of mate choice decisions in lab and field trials.
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Affiliation(s)
- Stefan Hirtenlehner
- Department of Zoology, Karl-Franzens-University, Universitätsplatz 2, 8010, Graz, Austria,
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Steiger S, Ower GD, Stökl J, Mitchell C, Hunt J, Sakaluk SK. Sexual selection on cuticular hydrocarbons of male sagebrush crickets in the wild. Proc Biol Sci 2013; 280:20132353. [PMID: 24197415 DOI: 10.1098/rspb.2013.2353] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Cuticular hydrocarbons (CHCs) play an essential role in mate recognition in insects but the form and intensity of sexual selection on CHCs has only been evaluated in a handful of studies, and never in a natural population. We quantified sexual selection operating on CHCs in a wild population of sagebrush crickets, a species in which nuptial feeding by females imposes an unambiguous phenotypic marker on males. Multivariate selection analysis revealed a saddle-shaped fitness surface, suggesting a complex interplay between the total abundance of CHCs and specific CHC combinations in their influence on female choice. The fitness surface resulting from two axes of disruptive selection reflected a trade-off between short- and long-chained CHCs, suggesting that males may be sacrificing some level of desiccation resistance in favour of increased attractiveness. There was a significant correlation between male body size and total CHC abundance, suggesting that male CHCs provide females with a reliable cue for maximizing benefits obtained from males. Notwithstanding the conspicuousness of males' acoustic signals, our results suggest that selection imposed on males via female mating preferences may be far more complex than previously appreciated and operating in multiple sensory modalities.
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Affiliation(s)
- Sandra Steiger
- Behavior, Ecology, Evolution and Systematics Section, School of Biological Sciences, Illinois State University, , Normal, IL 61790-4120, USA, Institute of Experimental Ecology, University of Ulm, , Ulm 89081, Germany, Institute of Zoology, University of Regensburg, , Regensburg 93053, Germany, Centre for Ecology and Conservation, School of Biosciences, University of Exeter, , Cornwall Campus, Penryn TR10 9EZ, UK
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53
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Buellesbach J, Gadau J, Beukeboom LW, Echinger F, Raychoudhury R, Werren JH, Schmitt T. Cuticular hydrocarbon divergence in the jewel wasp Nasonia: evolutionary shifts in chemical communication channels? J Evol Biol 2013; 26:2467-78. [PMID: 24118588 DOI: 10.1111/jeb.12242] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Revised: 08/06/2013] [Accepted: 08/07/2013] [Indexed: 12/29/2022]
Abstract
The evolution and maintenance of intraspecific communication channels constitute a key feature of chemical signalling and sexual communication. However, how divergent chemical communication channels evolve while maintaining their integrity for both sender and receiver is poorly understood. In this study, we compare male and female cuticular hydrocarbon (CHC) profiles in the jewel wasp genus Nasonia, analyse their chemical divergence and investigate their role as species-specific sexual signalling cues. Males and females of all four Nasonia species showed unique, nonoverlapping CHC profiles unambiguously separating them. Surprisingly, male and female phylogenies based on the chemical distances between their CHC profiles differed dramatically, where only male CHC divergence parallels the molecular phylogeny of Nasonia. In particular, N. giraulti female CHC profiles were the most divergent from all other species and very different from its most closely related sibling species N. oneida. Furthermore, although our behavioural assays indicate that female CHC profiles can generally be perceived as sexual cues attracting males in Nasonia, this function has apparently been lost in the highly divergent female N. giraulti CHC profiles. Curiously, N. giraulti males are still attracted to heterospecific, but not to conspecific female CHC profiles. We suggest that this striking discrepancy has been caused by an extensive evolutionary shift in female N. giraulti CHC profiles, which are no longer used as conspecific recognition cues. Our study constitutes the first report of an apparent abandonment of a sexual recognition cue that the receiver did not adapt to.
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Affiliation(s)
- J Buellesbach
- Department of Evolutionary Biology and Animal Ecology, Faculty of Biology, University of Freiburg, Freiburg, Germany; Spemann Graduate School of Biology and Medicine (SGBM), University of Freiburg, Freiburg, Germany
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54
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Schwander T, Arbuthnott D, Gries R, Gries G, Nosil P, Crespi BJ. Hydrocarbon divergence and reproductive isolation in Timema stick insects. BMC Evol Biol 2013; 13:151. [PMID: 23855797 PMCID: PMC3728149 DOI: 10.1186/1471-2148-13-151] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Accepted: 07/12/2013] [Indexed: 01/06/2023] Open
Abstract
Background Individuals commonly prefer certain trait values over others when choosing their mates. If such preferences diverge between populations, they can generate behavioral reproductive isolation and thereby contribute to speciation. Reproductive isolation in insects often involves chemical communication, and cuticular hydrocarbons, in particular, serve as mate recognition signals in many species. We combined data on female cuticular hydrocarbons, interspecific mating propensity, and phylogenetics to evaluate the role of cuticular hydrocarbons in diversification of Timema walking-sticks. Results Hydrocarbon profiles differed substantially among the nine analyzed species, as well as between partially reproductively-isolated T. cristinae populations adapted to different host plants. In no-choice trials, mating was more likely between species with similar than divergent hydrocarbon profiles, even after correcting for genetic divergences. The macroevolution of hydrocarbon profiles, along a Timema species phylogeny, fits best with a punctuated model of phenotypic change concentrated around speciation events, consistent with change driven by selection during the evolution of reproductive isolation. Conclusion Altogether, our data indicate that cuticular hydrocarbon profiles vary among Timema species and populations, and that most evolutionary change in hydrocarbon profiles occurs in association with speciation events. Similarities in hydrocarbon profiles between species are correlated with interspecific mating propensities, suggesting a role for cuticular hydrocarbon profiles in mate choice and speciation in the genus Timema.
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Affiliation(s)
- Tanja Schwander
- Center for Ecological and Evolutionary Studies, University of Groningen, Groningen, The Netherlands.
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55
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Oh KP, Shaw KL. Multivariate sexual selection in a rapidly evolving speciation phenotype. Proc Biol Sci 2013; 280:20130482. [PMID: 23760640 DOI: 10.1098/rspb.2013.0482] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Estimating the fitness surface of rapidly evolving secondary sexual traits can elucidate the origins of sexual isolation and thus speciation. Evidence suggests that sexual selection is highly complex in nature, often acting on multivariate sexual characters that sometimes include non-heritable components of variation, thus presenting a challenge for predicting patterns of sexual trait evolution. Laupala crickets have undergone an explosive species radiation marked by divergence in male courtship song and associated female preferences, yet patterns of sexual selection that might explain this diversification remain unknown. We used female phonotaxis trials to estimate the fitness surface for acoustic characters within one population of Laupala cerasina, a species with marked geographical variation in male song and female preferences. Results suggested significant directional sexual selection on three major song traits, while canonical rotation of the matrix of nonlinear selection coefficients (γ) revealed the presence of significant convex (stabilizing) sexual selection along combinations of characters. Analysis of song variation within and among males indicated significantly higher repeatability along the canonical axis of greatest stabilizing selection than along the axis of greatest linear selection. These results are largely consistent with patterns of song divergence that characterize speciation and suggest that different song characters have the potential to indicate distinct information to females during courtship.
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Affiliation(s)
- Kevin P Oh
- Department of Neurobiology and Behavior, Cornell University, Ithaca, NY, USA.
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56
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Simmons LW, Thomas ML, Simmons FW, Zuk M. Female preferences for acoustic and olfactory signals during courtship: male crickets send multiple messages. Behav Ecol 2013. [DOI: 10.1093/beheco/art036] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Simmons LW, Tan YF, Millar AH. Sperm and seminal fluid proteomes of the field cricket Teleogryllus oceanicus: identification of novel proteins transferred to females at mating. INSECT MOLECULAR BIOLOGY 2013; 22:115-130. [PMID: 23211034 DOI: 10.1111/imb.12007] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Reproductive proteins are amongst the most evolutionarily divergent proteins known, and research on genetically well-characterized species suggests that postcopulatory sexual selection might be important in their evolution; however, we lack the taxonomic breadth of information on reproductive proteins that is required to determine the general importance of sexual selection for their evolution. We used transcriptome sequencing and proteomics to characterize the sperm and seminal fluid proteins of a cricket, Teleogryllus oceanicus, that has been widely used in the study of postcopulatory sexual selection. We identified 57 proteins from the sperm of these crickets. Many of these had predicted function in glycolysis and metabolism, or were structural, and had sequence similarity to sperm proteins found across taxa ranging from flies to humans. We identified 21 seminal fluid proteins, some of which resemble those found to be involved in postmating changes to female reproduction in other species. Some 27% of sperm proteins and 48% of seminal fluid proteins were of unknown function. The characterization of seminal fluid proteins in this species will allow us to explore their adaptive significance, and to contribute comparative data that will facilitate a general appreciation of the evolution of reproductive proteins within and among animal taxa.
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Affiliation(s)
- L W Simmons
- Centre for Evolutionary Biology, The University of Western Australia, Crawley, WA, Australia.
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58
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Ingleby FC, Hosken DJ, Flowers K, Hawkes MF, Lane SM, Rapkin J, Dworkin I, Hunt J. Genotype-by-environment interactions for cuticular hydrocarbon expression in Drosophila simulans. J Evol Biol 2012; 26:94-107. [DOI: 10.1111/jeb.12030] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Revised: 09/16/2012] [Accepted: 09/25/2012] [Indexed: 11/30/2022]
Affiliation(s)
- F. C. Ingleby
- Centre for Ecology and Conservation; School of Biosciences; University of Exeter; Tremough Penryn UK
| | - D. J. Hosken
- Centre for Ecology and Conservation; School of Biosciences; University of Exeter; Tremough Penryn UK
| | - K. Flowers
- Centre for Ecology and Conservation; School of Biosciences; University of Exeter; Tremough Penryn UK
| | - M. F. Hawkes
- Centre for Ecology and Conservation; School of Biosciences; University of Exeter; Tremough Penryn UK
| | - S. M. Lane
- Centre for Ecology and Conservation; School of Biosciences; University of Exeter; Tremough Penryn UK
| | - J. Rapkin
- Centre for Ecology and Conservation; School of Biosciences; University of Exeter; Tremough Penryn UK
| | - I. Dworkin
- Program in Ecology, Evolutionary Biology and Behavior; Department of Zoology; Michigan State University; East Lansing MI USA
| | - J. Hunt
- Centre for Ecology and Conservation; School of Biosciences; University of Exeter; Tremough Penryn UK
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59
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Hunt J, Snook RR, Mitchell C, Crudgington HS, Moore AJ. Sexual selection and experimental evolution of chemical signals in Drosophila pseudoobscura. J Evol Biol 2012; 25:2232-41. [PMID: 22984915 DOI: 10.1111/j.1420-9101.2012.02603.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2012] [Revised: 07/04/2012] [Accepted: 07/19/2012] [Indexed: 11/30/2022]
Abstract
Our expectations for the evolution of chemical signals in response to sexual selection are uncertain. How are chemical signals elaborated? Does sexual selection result in complexity of the composition or in altered quantities of expression? We addressed this in Drosophila pseudoobscura by examining male and female cuticular hydrocarbons (CHs) after 82 generations of elevated (E) sexual selection or relaxed sexual selection through monogamy (M). The CH profile consisted of 18 different components. We extracted three eigenvectors using principal component analysis that explained 72% of the variation. principal component (PC)1 described the amount of CHs produced, PC2 the trade-off between short- and long-chain CHs and PC3 the trade-off between apparently arbitrary CHs. In both sexes, the amount of CHs produced was greater in flies from the E treatment. PC3 was also higher, indicating that sexual selection also influenced the evolution of CH composition. The sexes differed in all three PCs, indicating substantial sexual dimorphism in this species, although the magnitude of this dimorphism was not increased as a result of our experimental evolution. Collectively, our work provides direct evidence that sexual selection plays an important role in the evolution of CHs in D. pseudoobscura and that both increased quantity and overall composition are targeted.
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Affiliation(s)
- J Hunt
- Centre for Ecology and Conservation, College of Life and Environmental Sciences, University of Exeter, Cornwall Campus, Penryn, UK
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60
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Weddle CB, Mitchell C, Bay SK, Sakaluk SK, Hunt J. Sex-specific genotype-by-environment interactions for cuticular hydrocarbon expression in decorated crickets, Gryllodes sigillatus: implications for the evolution of signal reliability. J Evol Biol 2012; 25:2112-2125. [PMID: 22900500 DOI: 10.1111/j.1420-9101.2012.02593.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Accepted: 07/05/2012] [Indexed: 11/30/2022]
Abstract
Phenotypic traits that convey information about individual identity or quality are important in animal social interactions, and the degree to which such traits are influenced by environmental variation can have profound effects on the reliability of these cues. Using inbred genetic lines of the decorated cricket, Gryllodes sigillatus, we manipulated diet quality to test how the cuticular hydrocarbon (CHC) profiles of males and females respond across two different nutritional rearing environments. There were significant differences between lines in the CHC profiles of females, but the effect of diet was not quite statistically significant. There was no significant genotype-by-environment interaction (GEI), suggesting that environmental effects on phenotypic variation in female CHCs are independent of genotype. There was, however, a significant effect of GEI for males, with changes in both signal quantity and content, suggesting that environmental effects on phenotypic expression of male CHCs are dependent on genotype. The differential response of male and female CHC expression to variation in the nutritional environment suggests that these chemical cues may be under sex-specific selection for signal reliability. Female CHCs show the characteristics of reliable cues of identity: high genetic variability, low condition dependence and a high degree of genetic determination. This supports earlier work showing that female CHCs are used in self-recognition to identify previous mates and facilitate polyandry. In contrast, male CHCs show the characteristics of reliable cues of quality: condition dependence and a relatively higher degree of environmental determination. This suggests that male CHCs are likely to function as cues of underlying quality during mate choice and/or male dominance interactions.
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Affiliation(s)
- C B Weddle
- Behavior, Ecology, Evolution & Systematics Section, School of Biological Sciences, Illinois State University, Normal, IL, USA
| | - C Mitchell
- Center for Ecology & Conservation, School of Biosciences, University of Exeter, Penryn, UK
| | - S K Bay
- Center for Ecology & Conservation, School of Biosciences, University of Exeter, Penryn, UK
| | - S K Sakaluk
- Behavior, Ecology, Evolution & Systematics Section, School of Biological Sciences, Illinois State University, Normal, IL, USA
| | - J Hunt
- Center for Ecology & Conservation, School of Biosciences, University of Exeter, Penryn, UK
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61
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The use of multimodal communication in mate choice decisions by female house crickets, Acheta domesticus. Anim Behav 2012. [DOI: 10.1016/j.anbehav.2012.02.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Sharma MD, Mitchell C, Hunt J, Tregenza T, Hosken DJ. The Genetics of Cuticular Hydrocarbon Profiles in the Fruit Fly Drosophila simulans. J Hered 2012; 103:230-9. [DOI: 10.1093/jhered/esr132] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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63
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Larson EL, Hume GL, Andrés JA, Harrison RG. Post-mating prezygotic barriers to gene exchange between hybridizing field crickets. J Evol Biol 2011; 25:174-86. [PMID: 22092687 DOI: 10.1111/j.1420-9101.2011.02415.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Studies of sexual selection in speciation have traditionally focused on mate preference, with less attention given to traits that act between copulation and fertilization. However, recent work suggests that post-mating prezygotic barriers may play an important role in speciation. Here, we evaluate the role of such barriers in the field crickets, Gryllus firmus and Gryllus pennsylvanicus. Gryllus pennsylvanicus females mated with G. firmus males produce viable, fertile offspring, but when housed with both species produce offspring sired primarily by conspecifics. We evaluate patterns of sperm utilization in doubly mated G. pennsylvanicus females and find no evidence for conspecific sperm precedence. The reciprocal cross (G. firmus female × G. pennsylvanicus male) produces no progeny. Absence of progeny reflects a barrier to fertilization rather than reduced sperm transfer, storage or motility. We propose a classification scheme for mechanisms underlying post-mating prezygotic barriers similar to that used for premating barriers.
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Affiliation(s)
- Erica L Larson
- Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY 14853, USA.
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64
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Male crickets alter the relative expression of cuticular hydrocarbons when exposed to different acoustic environments. Anim Behav 2011. [DOI: 10.1016/j.anbehav.2011.03.023] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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65
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Thomas ML, Simmons LW. Crickets detect the genetic similarity of mating partners via cuticular hydrocarbons. J Evol Biol 2011; 24:1793-800. [PMID: 21649764 DOI: 10.1111/j.1420-9101.2011.02319.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Animals should decipher information about the genetic make-up of conspecifics in order to enhance the fitness benefits associated with mate choice. Although there is increasing evidence to suggest that animals make genetically informed decisions about their mating partners, we understand relatively little about the sensory mechanisms informing these decisions. Here, we investigate whether cuticular hydrocarbons, chemical compounds found on the cuticle of most terrestrial arthropods, provide a means of discerning genetic similarity during mate choice in the cricket, Teleogryllus oceanicus. We found that individuals preferentially mated with partners who share more dissimilar cuticular hydrocarbon profiles and that similarity in cuticular hydrocarbon profiles between mating pairs correlated with their genetic similarity. Our results provide good evidence that cuticular hydrocarbon profiles offer a means of assessing genetic compatibility in T. oceanicus, enabling individuals to choose their most genetically suitable mate.
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Affiliation(s)
- M L Thomas
- Centre for Evolutionary Biology, School of Animal Biology, The University of Western Australia, Crawley, WA, Australia.
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66
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Thomas ML, Simmons LW. Short-term phenotypic plasticity in long-chain cuticular hydrocarbons. Proc Biol Sci 2011; 278:3123-8. [PMID: 21367785 DOI: 10.1098/rspb.2011.0159] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Cuticular hydrocarbons provide arthropods with the chemical equivalent of the visually extravagant plumage of birds. Their long chain length, together with the number and variety of positions in which methyl branches and double bonds occur, provide cuticular hydrocarbons with an extraordinary level of information content. Here, we demonstrate phenotypic plasticity in an individual's cuticular hydrocarbon profile. Using solid-phase microextraction, a chemical technique that enables multiple sampling of the same individual, we monitor short-term changes in cuticular hydrocarbon profiles of individual crickets, Teleogryllus oceanicus, in response to a social challenge. We experimentally manipulate the dominance status of males and find that dominant males, on losing fights with other dominant males, change their hydrocarbon profile to more closely resemble that of a subordinate. This result demonstrates that cuticular hydrocarbons can be far more responsive to changes in social dominance than previously realized.
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Affiliation(s)
- Melissa L Thomas
- Centre for Evolutionary Biology, School of Animal Biology (M092), The University of Western Australia, Crawley 6009, Australia.
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67
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Allen CE, Zwaan BJ, Brakefield PM. Evolution of sexual dimorphism in the Lepidoptera. ANNUAL REVIEW OF ENTOMOLOGY 2011; 56:445-464. [PMID: 20822452 DOI: 10.1146/annurev-ento-120709-144828] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Among the animals, the Lepidoptera (moths and butterflies) are second only to beetles in number of described species and are known for their striking intra- and interspecific diversity. Within species, sexual dimorphism is a source of variation in life history (e.g., sexual size dimorphism and protandry), morphology (e.g., wing shape and color pattern), and behavior (e.g., chemical and visual signaling). Sexual selection and mating systems have been considered the primary forces driving the evolution of sexual dimorphism in the Lepidoptera, and alternative hypotheses have been neglected. Here, we examine opportunities for sexual selection, natural selection, and the interplay between the two forces in the evolution of sexual differences in the moths and butterflies. Our primary goal is to identify mechanisms that either facilitate or constrain the evolution of sexual dimorphism, rather than to resolve any perceived controversy between hypotheses that may not be mutually exclusive.
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Affiliation(s)
- Cerisse E Allen
- Division of Biological Sciences, University of Montana, Missoula, Montana 59812, USA.
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68
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Yue GH, Chang A. Molecular evidence for high frequency of multiple paternity in a freshwater shrimp species Caridina ensifera. PLoS One 2010; 5:e12721. [PMID: 20856862 PMCID: PMC2939052 DOI: 10.1371/journal.pone.0012721] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2010] [Accepted: 08/06/2010] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Molecular genetic analyses of parentage provide insights into mating systems. Although there are 22,000 members in Malacostraca, not much has been known about mating systems in Malacostraca. The freshwater shrimp Caridina ensifera blue, is a new species belonging to Malacostraca which was discovered recently in Sulawesi, Indonesia. Due to its small body size and low fecundity, this species is an ideal species to study the occurrence and frequency of multiple paternity and to understand of how the low fecundity species persist and evolve. METHODOLOGY/PRINCIPAL FINDINGS In this study, we developed four polymorphic microsatellites from C. ensifera and applied them to investigate the occurrence and frequency of multiple paternity in 20 C. ensifera broods caught from Lake Matano, Sulawesi. By genotyping the mother and all offspring from each brood we discovered multiple paternity in all 20 broods. In most of the 20 broods, fathers contributed skewed numbers of offspring and there was an apparent inverse correlation between reproductive success of sires and their relatedness to mothers. CONCLUSIONS/SIGNIFICANCE Our results in combination with recent reports on multiple paternity in crayfish, crab and lobster species suggests that multiple paternity is common in Malacostraca. Skewed contribution of fathers to the numbers of offspring and inverse correlation between reproductive success of sires and their relatedness to mothers suggest that sperm competition occurred and/or pre- and postcopulatory female choice happen, which may be important for avoiding the occurrence of inbreeding and optimize genetic variation in offspring and for persistence and evolution of low fecundity species.
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Affiliation(s)
- Gen Hua Yue
- Molecular Population Genetics Group, Temasek Life Sciences Laboratory, National University of Singapore, Singapore, Singapore.
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69
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Simmons LW, Beveridge M. The strength of postcopulatory sexual selection within natural populations of field crickets. Behav Ecol 2010. [DOI: 10.1093/beheco/arq132] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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GARCIA-GONZALEZ F, SIMMONS LW. Male-induced costs of mating for females compensated by offspring viability benefits in an insect. J Evol Biol 2010; 23:2066-2075. [DOI: 10.1111/j.1420-9101.2010.02065.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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71
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LEONARD ANNES, HEDRICK ANNV. Long-distance signals influence assessment of close range mating displays in the field cricket, Gryllus integer. Biol J Linn Soc Lond 2010. [DOI: 10.1111/j.1095-8312.2010.01472.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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72
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THOMAS MELISSAL, SIMMONS LEIGHW. Cuticular hydrocarbons influence female attractiveness to males in the Australian field cricket,Teleogryllus oceanicus. J Evol Biol 2010; 23:707-14. [DOI: 10.1111/j.1420-9101.2010.01943.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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73
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Thomas ML, Simmons LW. Male dominance influences pheromone expression, ejaculate quality, and fertilization success in the Australian field cricket, Teleogryllus oceanicus. Behav Ecol 2009. [DOI: 10.1093/beheco/arp105] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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