No postcopulatory response to inbreeding by male crickets

Simmons, Leigh W.; Thomas, Melissa L.

doi:10.1098/rsbl.2007.0578

Cited by 15 publications

(7 citation statements)

References 28 publications

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“…, 2008). In T. oceanicus , although males and females appear to differ in their post‐copulatory responses to inbreeding (Simmons & Thomas, 2008), our study provides evidence of male precopulatory inbreeding avoidance through preferential matings with conspecifics that are more genetically dissimilar. Our study therefore highlights the importance of considering not only both pre‐ and post‐copulatory mechanisms but also male selectivity as a confounding variable in studies investigating female mate choice and inbreeding avoidance.…”

Section: Discussionmentioning

confidence: 72%

Crickets detect the genetic similarity of mating partners via cuticular hydrocarbons

Thomas

Simmons

2011

Journal of Evolutionary Biology

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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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Section: Discussionmentioning

confidence: 72%

Crickets detect the genetic similarity of mating partners via cuticular hydrocarbons

Thomas

Simmons

2011

Journal of Evolutionary Biology

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“…However, empirical studies have provided conflicting evidence for the ability of males to alter their reproductive effort based on female relatedness (Pizzari et al . ; Simmons & Thomas ; Lewis & Wedell ). Moreover, inbreeding avoidance strategies are more likely to evolve in the sex that endures the greatest cost (Zeh & Zeh ).…”

Section: Introductionmentioning

confidence: 99%

“…When males recognise that mating with kin is unavoidable, it has been suggested that they might adopt a peri-copulatory strategy to offset the cost of inbreeding, for example, by tailoring the ejaculate to limit their reproductive investment (Parker 2000). However, empirical studies have provided conflicting evidence for the ability of males to alter their reproductive effort based on female relatedness (Pizzari et al 2004;Simmons & Thomas 2008;Lewis & Wedell 2009). Moreover, inbreeding avoidance strategies are more likely to evolve in the sex that endures the greatest cost (Zeh & Zeh 1997).…”

Section: Introductionmentioning

confidence: 99%

Gametic interactions promote inbreeding avoidance in house mice

Firman

Simmons

2015

Ecology Letters

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Reproduction among related individuals is generally maladaptive. Inbreeding imposes significant costs on individual reproductive success, and can decrease population fitness. Theory predicts that polyandrous females can avoid inbreeding by exploiting paternity-biasing mechanisms that enable differential sperm 'use'. Evidence of sperm selection is difficult to demonstrate because patterns of non-random paternity can be generated by a variety of different mechanisms. Here, using in vitro fertilisation in mice, we provide evidence of sperm selection at the gametic level. We mixed the sperm of sibling and non-sibling males, and observed a fertilisation bias towards the sperm of non-sibling males. The number of motile sperm and sperm swimming performance did not differ between competitors among the replicate assays. Therefore, our result can only be ascribed to egg-driven sperm selection against related sperm. We conclude that the expression or secretion of gametic proteins could provide the molecular basis for this mechanism of cryptic female choice.

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“…Mechanisms of post-copulatory process, such as cryptic female choice and sperm competition, will increase or decrease the degree of inbreeding (Jennions & Petrie 2000). On the other hand, Simmons & Thomas (2008) also showed that males of the cricket species Teleogryllus oceanicus do not exhibit a post-copulatory response to inbreeding. Furthermore, female E. postfasciatus are polyandrous (Sato & Kohama 2007).…”

Section: Discussionmentioning

confidence: 99%

The Effect of Inbreeding on Mating Behaviour of West Indian Sweet Potato Weevil Euscepes postfasciatus

et al. 2011

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When there is an inbreeding depression, mating with a kin individual is generally considered maladaptive behaviour. However, in some conditions, the inclusive fitness benefits from inbreeding may outweigh the costs of inbreeding depression, and thus, inbreeding tolerance is often adaptive. Inbreeding depression and the effect of relatedness on mating behaviour in the West Indian sweet potato weevil Euscepes postfasciatus were examined. No significant inbreeding depression was detected as indicated by body weight and number of progeny emerging from sweet potato roots. Male mating performance (i.e. number of mating occurrences per night) was adversely affected by inbreeding depression, but the effect was low (fitness loss was 6.3%). Although there were no significant differences in latency to mounting, pre‐copulatory guarding, copulation and post‐copulatory guarding duration between full‐sib and non‐kin pairs, the copulation rate of full‐sib pairs was significantly higher than that of non‐kin pairs. These results support the theoretical prediction that when inbreeding depression is weak, copulation with close relative individuals is favoured.

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No postcopulatory response to inbreeding by male crickets

Cited by 15 publications

References 28 publications

Crickets detect the genetic similarity of mating partners via cuticular hydrocarbons

Crickets detect the genetic similarity of mating partners via cuticular hydrocarbons

Gametic interactions promote inbreeding avoidance in house mice

The Effect of Inbreeding on Mating Behaviour of West Indian Sweet Potato Weevil Euscepes postfasciatus

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