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Behavioural individuality in clonal fish arises despite near-identical rearing conditions [Nature Communications]

Keywords : animal behaviour, behavioural ecology, ichthyology

par Frédéric Magné - publié le

Behavioural individuality is thought to be caused by differences in genes and/or environmental conditions. Therefore, if these sources of variation are removed, individuals are predicted to develop similar phenotypes lacking repeatable individual variation. Moreover, even among genetically identical individuals, direct social interactions are predicted to be a powerful factor shaping the development of individuality. We use tightly controlled ontogenetic experiments with clonal fish, the Amazon molly (Poecilia formosa), to test whether near-identical rearing conditions and lack of social contact dampen individuality.(...)

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