Does kin selection moderate sexual conflict in<i>Drosophila</i>?

Chippindale, Adam K.; Berggren, Meredith; Alpern, Joshua H. M.; Montgomerie, Robert

doi:10.1098/rspb.2015.1417

Cited by 25 publications

(58 citation statements)

References 30 publications

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“…Their results have been controversial [29,31], and motivated our Table 1. Summary statistics (mean + s.e.)…”

Section: Discussionmentioning

confidence: 99%

“…A follow-up experiment by Carazo et al [30] has also reported higher rates of male-male fighting (but not courtship intensity) when males are unrelated and unfamiliar to each other (reared in separate vials) compared with groups of brothers raised in the same environment. Most recently, a study by Chippindale et al [31] that used a similar protocol to that of Carazo et al [11] failed to find any significant differences in the longevity, reproductive lifespan or LRS of females housed with three brothers or three unrelated males.…”

Section: Introductionmentioning

confidence: 99%

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Are flies kind to kin? The role of intra- and inter-sexual relatedness in mediating reproductive conflict

Martin

Long

2015

Proc. R. Soc. B.

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As individual success often comes at the expense of others, interactions between the members of a species are frequently antagonistic, especially in the context of reproduction. In theory, this conflict may be reduced in magnitude when kin interact, as cooperative behaviour between relatives can result in increased inclusive fitness. Recent tests of the potential role of cooperative behaviour between brothers in Drosophila melanogaster have proved to be both exciting and controversial. We set out to replicate these experiments, which have profound implications for the study of kin selection and sexual conflict, and to expand upon them by also examining the potential role of kinship between males and females in reproductive interactions. While we did observe reduced fighting and courtship effort between competing brothers, contrary to previous studies we did not detect any fitness benefit to females as a result of the modification of male antagonistic behaviours. Furthermore, we did not observe any differential treatment of females by their brothers, as would be expected if the intensity of sexual conflict was mediated by kin selection. In the light of these results, we propose an alternative explanation for observed differences in male-male conflict and provide preliminary empirical support for this hypothesis.

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“…Their results have been controversial [29,31], and motivated our Table 1. Summary statistics (mean + s.e.)…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Are flies kind to kin? The role of intra- and inter-sexual relatedness in mediating reproductive conflict

Martin

Long

2015

Proc. R. Soc. B.

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“…Lizé, McKay, & Lewis, ; Carazo, Perry, Johnson, Pizzari, & Wigby, ; Le Page et al. but see Chippindale et al., ; Martin & Long, ). While larvae are able to recognize each other as conspecifics using vision, smell, mechanosensation and gustation ( reviewed in Dombrovski et al., ), to the best of our knowledge there has been no published evidence that larvae have the ability to distinguish kin from nonkin.…”

Section: Introductionmentioning

confidence: 99%

Kin recognition and co‐operative foraging inDrosophila melanogasterlarvae

Khodaei

Long

2019

J of Evolutionary Biology

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A long‐standing goal for biologists and social scientists is to understand the factors that lead to the evolution and maintenance of co‐operative behaviour between conspecifics. To that end, the fruit fly, Drosophila melanogaster, is becoming an increasingly popular model species to study sociality; however, most of the research to date has focused on adult behaviours. In this study, we set out to examine group‐feeding behaviour by larvae and to determine whether the degree of relatedness between individuals mediates the expression co‐operation. In a series of assays, we manipulated the average degree of relatedness in groups of third‐instar larvae that were faced with resource scarcity, and measured the size, frequency and composition of feeding clusters, as well as the fitness benefits associated with co‐operation. Our results suggest that larval D. melanogaster are capable of kin recognition (something that has not been previously described in this species), as clusters were more numerous, larger and involved more larvae, when more closely related kin were present in the social environment. These findings are discussed in the context of the correlated fitness‐associated benefits of co‐operation, the potential mechanisms by which individuals may recognize kin, and how that kinship may play an important role in facilitating the manifestation of this co‐operative behaviour.

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“…; Lymbery and Simmons ; but see Chippindale et al. ), which at least in some cases leads to longer male lifespan (Carazo et al. ).…”

Section: Discussionmentioning

confidence: 99%

The “unguarded-X” and the genetic architecture of lifespan: Inbreeding results in a potentially maladaptive sex-specific reduction of female lifespan inDrosophila melanogaster

2018

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Sex differences in ageing and lifespan are ubiquitous in nature. The "unguarded-X" hypothesis (UXh) suggests they may be partly due to the expression of recessive mutations in the hemizygous sex chromosomes of the heterogametic sex, which could help explain sex-specific ageing in a broad array of taxa. A prediction central to the UX hypothesis is that inbreeding will decrease the lifespan of the homogametic sex more than the heterogametic sex, because only in the former does inbreeding increase the expression of recessive deleterious mutations. In this study, we test this prediction by examining the effects of inbreeding on the lifespan and fitness of male and female Drosophila melanogaster across different social environments. We found that, across social environments, inbreeding resulted in a greater reduction of female than male lifespan, and that inbreeding effects on fitness did not seem to counterbalance sex-specific effects on lifespan, suggesting the former are maladaptative. Inter- and intra-sexual correlation analyses also allowed us to identify evidence of an underlying joint genetic architecture for inbreeding effects on lifespan. We discuss these results in light of the UXh and other alternative explanations, and suggest that more attention should be paid to the possibility that the "unguarded-X" may play an important role in the evolution of sex-specific lifespan.

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Does kin selection moderate sexual conflict inDrosophila?

Cited by 25 publications

References 30 publications

Are flies kind to kin? The role of intra- and inter-sexual relatedness in mediating reproductive conflict

Are flies kind to kin? The role of intra- and inter-sexual relatedness in mediating reproductive conflict

Kin recognition and co‐operative foraging inDrosophila melanogasterlarvae

The “unguarded-X” and the genetic architecture of lifespan: Inbreeding results in a potentially maladaptive sex-specific reduction of female lifespan inDrosophila melanogaster

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