Individual variation in helping in a cooperative breeder: relatedness versus behavioural type
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0003-3472/$38.0
منابع مشابه
Biased escorts: offspring sex, not relatedness explains alloparental care patterns in a cooperative breeder
Kin selection theory predicts that animals should direct costly care where inclusive fitness gains are highest. Individuals may achieve this by directing care at closer relatives, yet evidence for such discrimination in vertebrates is equivocal. We investigated patterns of cooperative care in banded mongooses, where communal litters are raised by adult 'escorts' who form exclusive caring relati...
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In many cooperatively breeding species, group members form a dominance hierarchy or queue to inherit the position of breeder. Models aimed at understanding individual variation in helping behavior, however, rarely take into account the effect of dominance rank on expected future reproductive success and thus the potential direct fitness costs of helping. Here we develop a kin-selection model of...
متن کاملVariation in Helper Type Affects Group Stability and Reproductive Decisions in a Cooperative Breeder
Since the dawn of kin selection theory (Hamilton 1964), many studies have focused on the degree of relatedness as an important factor in explaining differences in levels of cooperation within (e.g. Stiver et al. 2005) and across cooperatively breeding species (e.g. Griffin & West 2003). However, analyses of within-group kin structure show that in many social systems individuals do not discrimin...
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Petra Dierkes, Dik Heg,* Michael Taborsky, Eva Skubic and Roland Achmann Konrad Lorenz Institute for Comparative Ethology, Austrian Academy of Sciences, Vienna, Austria Department of Behavioural Ecology, Zoological Institute, University of Bern, Hinterkappelen, Switzerland Ludwig Boltzmann Institute of Immuno-, Cytoand Molecular Genetic Research, University of Veterinary Medicine, Vienna, Austr...
متن کاملLife history and behavioral type in the highly social cichlid Neolamprologus pulcher
Many studies have found that seemingly unconnected behaviors are correlated into behavioral syndromes. These behavioral syndromes may be the consequence of interindividual variation in life-history strategies. Only few studies have investigated the role of behavioral syndromes in cooperatively breeding species, despite the fact that one would expect particular large variation in behavior due to...
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