2016
DOI: 10.1093/beheco/arw099
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Kin discrimination increases with odor distance in the German cockroach

Abstract: Kin recognition mediates altruistic behavior and inbreeding avoidance in many animal societies. So far, evidence for accurate kin recognition, when individuals distinguish fine scale differences in genetic relatedness, in social insects is mixed. Although this ability should be counter selected to reduce risks of nepotism in eusocial colonies, accurate kin recognition may be beneficial in less integrated societies where genetic conflicts are reduced. Here we show that gregarious cockroaches Blattella germanica… Show more

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Cited by 11 publications
(10 citation statements)
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“…Our heritability and selection gradient estimates described above are univariate, rather than multivariate, because mixed models can experience issues with model convergence when a large number of traits are included in one model [58,64]. To also consider multivariate models, we first conducted a principal components analysis (PCA) to reduce the dimensionality of our dataset.…”
Section: (Iii) Principal Component Analysismentioning
confidence: 99%
“…Our heritability and selection gradient estimates described above are univariate, rather than multivariate, because mixed models can experience issues with model convergence when a large number of traits are included in one model [58,64]. To also consider multivariate models, we first conducted a principal components analysis (PCA) to reduce the dimensionality of our dataset.…”
Section: (Iii) Principal Component Analysismentioning
confidence: 99%
“…For instance, in the German cockroach ( Blattella germanica ), that live in large mixed-family aggregations [ 44 ], kin recognition enables males and females to reject siblings as potential mating partners [ 45 ], thereby avoiding important fitness costs in the form of reduced offspring production [ 41 , 46 ]. Kin recognition is mediated by the perception of quantitative variations of odour profiles (cuticular hydrocarbons) correlated with relatedness, allowing for the discrimination of fine scale differences in genetic similarity [ 47 , 48 ].…”
Section: Introductionmentioning
confidence: 99%
“…Intra-strain (kin) discrimination, however, was only demonstrated later, in studies using wild-caught cockroaches sampled in separate geographic areas, showing that behavioural discrimination is based on quantitative differences in chemical signatures (i.e. cuticular hydrocarbon profiles) correlated with the genetic distance between individuals (Lihoreau et al, 2016b). The potential lack of genetic diversity in lab cultures maintained for long periods of time (highly inbred, no information about genetic background) may be a reason why kin recognition has been observed so rarely in insects (Fellowes, 1998;van Zweden and D'Ettorre, 2010).…”
Section: Testing Wild Animalsmentioning
confidence: 99%