Stress and early experience underlie dominance status and division of labour in a clonal insect

Proceedings. Biological Sciences
Abel BernadouJürgen Heinze

Abstract

Cooperation and division of labour are fundamental in the 'major transitions' in evolution. While the factors regulating cell differentiation in multi-cellular organisms are quite well understood, we are just beginning to unveil the mechanisms underlying individual specialization in cooperative groups of animals. Clonal ants allow the study of which factors influence task allocation without confounding variation in genotype and morphology. Here, we subjected larvae and freshly hatched workers of the clonal ant Platythyrea punctata to different rearing conditions and investigated how these manipulations affected division of labour among pairs of oppositely treated, same-aged clonemates. High rearing temperature, physical stress, injury and malnutrition increased the propensity of individuals to become subordinate foragers rather than dominant reproductives. This is reflected in changed gene regulation: early stages of division of labour were associated with different expression of genes involved in nutrient signalling pathways, metabolism and the phenotypic response to environmental stimuli. Many of these genes appear to be capable of responding to a broad range of stressors. They might link environmental stimuli to behavioural ...Continue Reading

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Citations

Feb 29, 2020·The Journal of Experimental Biology·Abel BernadouJürgen Heinze
Mar 9, 2021·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Judith KorbUNKNOWN So-Long consortium
Mar 9, 2021·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Boris H KramerAbel Bernadou
Jun 23, 2020·Neuroscience and Biobehavioral Reviews·Ajay S MathuruSerafino Teseo

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