Taking care of group size and heterogeneity in social recognition systems

Schausberger, Peter

doi:10.1007/s00265-014-1763-2

Cited by 2 publications

(3 citation statements)

References 10 publications

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“…However, we have never drawn this conclusion and instead found support for familiarization among thrips larvae in kin groups only. Second, Schausberger (2014) claims 'familiarity is only established, or does only have an effect, in sibling but not non-siblings' as being our conclusion. However, we recognized the difference in pre-experimental group size of siblings and non-siblings and separately analysed survival of familiar vs. unfamiliar thrips.…”

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confidence: 75%

“…Thrips represent an ideal biological system to investigate mechanisms of social recognition. In his commentary on our article (de Bruijn et al 2014) introducing thrips for this purpose, Schausberger (2014) assumes a social recognition system in which individuals should memorize 'distinct individual labels of the referents'. Clearly, this imposes increasing cognitive capabilities with increasing group size.…”

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confidence: 99%

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Alternative models of familiarity and false claims concerning social recognition systems

Bruijn

Sabelis

Egas

2014

Behav Ecol Sociobiol

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confidence: 75%

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confidence: 99%

Alternative models of familiarity and false claims concerning social recognition systems

Bruijn

Sabelis

Egas

2014

Behav Ecol Sociobiol

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“…Both populations had been closed and inbred in the laboratory for several years before the experiment, with bottleneck events likely differing between the two populations. Higher average level of genetic relatedness in the Sicily population may have decreased label variability, resulting in lower acceptance thresholds of Sicily females 44,45 .…”

Section: Discussionmentioning

confidence: 99%

Plastic female choice to optimally balance (k)in- and out-breeding in a predatory mite

Schausberger

Çekin

2020

Sci Rep

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Both close inbreeding and extreme outbreeding may negatively affect direct fitness. Optimal outbreeding theory suggests that females should preferentially mate with distantly related males. (K)in breeding theory suggests that, at similar direct fitness costs of close inbreeding and extreme outbreeding, females should prefer close kin to non-kin. Empirical evidence of plastic female choice for an optimal balance between close inbreeding and extreme outbreeding remains elusive. We tested the combined predictions of optimal outbreeding and (k)in breeding theories in predatory mites Phytoseiulus persimilis from two origins, Sicily and Greece, which suffer from both close inbreeding and extreme outbreeding depression. In three separate experiments, virgin females were presented binary choices between familiar and unfamiliar brothers, and between familiar/unfamiliar brothers and distant kin or non-kin. Females of Greece but not Sicily preferred unfamiliar to familiar brothers. females of both origins preferred distant kin to unfamiliar and familiar brothers but preferred unfamiliar brothers to non-kin. Females of Sicily but not Greece preferred familiar brothers to non-kin. The suggested kin recognition mechanisms are phenotype matching and direct familiarity, with finer-tuned recognition abilities of Greece females. Overall, our experiments suggest that flexible mate choice by P. persimilis females allows optimally balancing inclusive fitness trade-offs. Both close inbreeding and extreme outbreeding may negatively affect fitness. Close inbreeding commonly decreases direct fitness, for example, by reducing survival, reproduction, competitiveness and/or stress tolerance 1-3. Outbreeding is often advantageous to close inbreeding but its benefits depend on the level of genetic distance between mates and the choice options. Extreme outbreeding may be detrimental to direct fitness for various reasons such as underdominance (i.e. heterozygote disadvantage), breaking up advantageous co-adapted gene complexes or maladaptation 4-7. Accordingly, optimal outbreeding theory 4 states that intermediate levels of genetic relatedness between mates should yield the highest fitness gains. However, an alternative theory of mate choice, (k)in breeding theory 8,9 , recognizes that inbreeding entails kin-selected indirect fitness gains 10,11 , due to allowing genetically related males to sire offspring and increased genetic relatedness of offspring, which may counterbalance or even outweigh direct fitness costs 8,9,12. Synthesis of optimal outbreeding theory 4 and (k) in breeding theory 8,9 suggests that animals should optimally balance mate choice between kin and non-kin, in dependence of the choice options and the associated benefit-cost trade-offs in direct and indirect fitness 13. Optimally balancing mate choice between kin and non-kin requires kin recognition abilities 14-16. Kin recognition is a prime mechanism allowing to either avoid or prefer inbreeding across animals; other reported mechanisms include dispersal, polyandry, delayed...

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Taking care of group size and heterogeneity in social recognition systems

Cited by 2 publications

References 10 publications

Alternative models of familiarity and false claims concerning social recognition systems

Alternative models of familiarity and false claims concerning social recognition systems

Plastic female choice to optimally balance (k)in- and out-breeding in a predatory mite

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