Behavioural types and ecological effects in a natural population of the cooperative cichlid Neolamprologus pulcher
نویسندگان
چکیده
Department of Behavioural Ecology, Institute of Ecology and Evolution, University of Bern Animal Ecology Group, Centre for Ecological and Evolutionary Studies, University of Groningen, The Netherlands Department of Ecology and Evolution, University of Lausanne, Switzerland Department of Evolution, Ecology and Organismal Biology, The Ohio State University, U.S.A. Animal and Plant Sciences, University of Sheffield, U.K.
منابع مشابه
Dispersal patterns and status change in a co-operatively breeding cichlid Neolamprologus pulcher: evidence from microsatellite analyses and behavioural observations
Genetic techniques and long-term behavioural observations were combined to investigate dispersal patterns and changes in social position in Neolamprologus pulcher, a co-operatively breeding cichlid from Lake Tanganyika. Comparisons of genetic variance (FST) across subpopulations demonstrated that fish were genetically more similar to individuals from proximate sub-populations compared to indivi...
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Cerebral lateralization, an evolutionarily ancient and widespread phenomenon among vertebrates, is thought to bestow cognitive advantages. The advantages of lateralization at the individual-level do not necessarily require that the entire population share the same pattern of lateralization. In fact, directional bias in lateralization may lead to behavioural predictability and enhanced predator ...
متن کاملIsotocin and sociality in the cooperatively breeding cichlid fish, Neolamprologus pulcher
The ultimate functions of sociality, or the tendency to associate with conspecifics and to live within a social group, are increasingly well understood. However, the proximate mechanisms that mediate this behaviour have received less attention. The oxytocin family of nonapeptide hormones (including isotocin in teleost fish) is thought to play an important role in regulating social behaviour acr...
متن کاملThe physiological effects of social status in the cooperatively breeding cichlid Neolamprologus pulcher
The physiological effects of social rank were examined in three different experiments with Neolamprologus pulcher a cooperatively breeding cichlid, endemic to Lake Tanganyika, East Africa. The effects of rank on physiology between pairs of dominant and subordinate sizematched fish (experiment 1) and among groups of four size-matched fish (experiment 2) were examined. A third experiment mimicked...
متن کاملRepeatability and Heritability of Behavioural Types in a Social Cichlid
Aim. The quantitative genetics underlying correlated behavioural traits (''animal personality") have hitherto been studied mainly in domesticated animals. Here we report the repeatability (R) and heritability (h(2)) of behavioural types in the highly social cichlid fish Neolamprologus pulcher. Methods. We tested 1779 individuals repeatedly and calculated the h(2) of behavioural types by varianc...
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