Ecology of kin and nonkin larval interactions in Tribolium beetles

Jasieński, Michał; Korzeniak, Urszula; Łomnicki, Adam

doi:10.1007/bf00299843

Cited by 24 publications

(15 citation statements)

References 42 publications

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“…Our results are partially consistent with social evolution theory, which predicts that groups with high relatedness should have highest average fitness (Smith 1964; Wilson 1975; Jasieński et al. 1988).…”

Section: Discussionsupporting

confidence: 89%

Nonadditive indirect effects of group genetic diversity on larval viability in Drosophila melanogaster imply key role of maternal decision‐making

et al. 2012

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Genetic variation can have important consequences for populations: high population genetic diversity is typically associated with ecological success. Some mechanisms that account for these benefits assume that local social groups with high genetic diversity are more successful than low-diversity groups. At the same time, active decision-making by individuals can influence group genetic diversity. Here, we examine how maternal decisions that determine group genetic diversity influence the viability of Drosophila melanogaster larvae. Our groups contained wild-type larvae, whose genetic diversity we manipulated, and genetically marked ‘tester’ larvae, whose genotype and frequency were identical in all trials. We measured wild-type and tester viability for each group. Surprisingly, the viability of wild-type larvae was neither augmented nor reduced when group genetic diversity was altered. However, the viability of the tester genotype was substantially depressed in large, high-diversity groups. Further, not all high-diversity groups produced this effect: certain combinations of wild-type genotypes were deleterious to tester viability, while other groups of the same diversity—but containing different wild-type genotypes—were not deleterious. These deleterious combinations of wild-type genotypes could not be predicted by observing the performance of the same tester and wild-type genotypes in low-diversity groups. Taken together, these results suggest that nonadditive interactions among genotypes, rather than genetic diversity per se, account for between-group differences in viability in D. melanogaster and that predicting the consequences of genetic diversity at the population level may not be straightforward.

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Section: Discussionsupporting

confidence: 89%

Nonadditive indirect effects of group genetic diversity on larval viability in Drosophila melanogaster imply key role of maternal decision‐making

et al. 2012

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“…Wade (1980a) studied the cannibalistic behaviour of larvae randomly taken from a population of Tribolium, and did not find a preference for predation of eggs laid by non-relatives. Jasienski et al (1988) suggested a reduction in the behavioural antagonism among related individuals to explain a reduction in developmental time of sib groups of Tribolium confusum when compared with random groups of the same species. Our data seem to support this interpretation, as we observed a reduced density-dependence in larval mortality for the sib groups in the first counts in our experiment.…”

Section: Discussionmentioning

confidence: 99%

“…No significant differences in total production after competition were found in both species. Finally, a clear example of decreased competition in genetically homogeneous groups has been reported by Jasienski (1988), who observed a clear superiority in growth rate for Bombina variegata tadpoles when they were maintained in full-sib groups instead of groups of non-relatives.…”

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confidence: 80%

Sib competition in Tribolium: a test of the elbow-room model

Garcı́a

Toro

1992

Heredity

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The elbow-room model of sib competition predicts that sexually reproducing parents could have a fitness advantage over asexual parents if competition within more diverse, sexually produced offspring was less intense than within more homogeneous, asexually produced ones. To test the assumption empirically that genetic homogeneity implies stronger competition, we compared the productivity of sib groups and random groups of the flour beetle Triboliurn castaneum maintained at very high densities. For larval production, we found an initial advantage of sib groups but it did not result in an advantage in total adult production, because high initial densities increased mortality in the long run, such that the adult production was the same in both groups. We discuss how some changes in our experimental design could produce very different results, and conclude that sib competition is unlikely to be a general explanation for the widespread presence of sexual reproduction in nature.

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“…Furthermore, mixtures may be more resistant to pathogens because there should be a greater chance of there being a resistant genotype present (Wolfe 1985). Evidence for heterogeneous advantage in animals has come from laboratory studies of Trilobium beetles (Jasienski et al 1988) and Drosophila (Pe¨rez-Tome¨& Toro 1982; Fowler & Partridge 1986).…”

Section: Introductionmentioning

confidence: 99%

The benefits of genetic diversity outweigh those of kin association in a territorial animal

Griffiths

Armstrong

2001

Proc. R. Soc. Lond. B

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The theories of kin selection and heterogeneous advantage have been central to studies of altruistic behaviour and the evolution of sex over the last 35 years. Yet they predict diametrically opposite e¡ects of genetic diversity on population density. Close relatives gain inclusive ¢tness advantages by preferentially associating with and behaving altruistically towards one another. However, heterogeneous advantage, which predicts competition to be highest when genetic diversity is low, suggests that bene¢ts will be greater for individuals in groups of non-kin. Here we test how these two processes balance and a¡ect the productivity of populations of animals in natural habitats. We report from a study of juvenile Atlantic salmon in the wild that heterogeneous advantage outweighs the bene¢ts of kin-biased behaviour, resulting in a 1.8-fold higher population biomass and signi¢cantly better condition of individual ¢sh.

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Ecology of kin and nonkin larval interactions in Tribolium beetles

Cited by 24 publications

References 42 publications

Nonadditive indirect effects of group genetic diversity on larval viability in Drosophila melanogaster imply key role of maternal decision‐making

Nonadditive indirect effects of group genetic diversity on larval viability in Drosophila melanogaster imply key role of maternal decision‐making

Sib competition in Tribolium: a test of the elbow-room model

The benefits of genetic diversity outweigh those of kin association in a territorial animal

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