期刊
ANIMAL BEHAVIOUR
卷 148, 期 -, 页码 39-51出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.anbehav.2018.11.013
关键词
activity; animal personality; antipredator response; behavioural plasticity; behavioural syndrome; developmental environment; environmental matching; phenotypic integration; silver spoon
资金
- National Science Foundation [IOS-1557951]
- Department of Biological Sciences at North Dakota State University
There is increasing evidence that among-individual differences in behaviour are, in part, generated by environmental effects. For example, diet quality can have drastically different effects on behavioural variation depending on whether it acts primarily during ontogeny (i.e. as a permanent environmental effect) or has an immediate effect on trait expression as a consequence of energy intake (i.e. temporary source of variation). Moreover, whether diet quality has a stronger effect on a trait's average expression, its variance or its covariance with other traits, remains unclear. We used a 2 x 2 factorial design crossing life stage (juvenile and adult) and diet quality (low- or high-energy content) to disentangle the effects of developmental and adult diets on the expression of behavioural differences. We tested 281 crickets for their activity levels, responses to predator cues and body mass. Neither developmental diet nor adulthood diet had any effect on population means or on the expression of an activity-antipredator response syndrome, suggesting a genetic basis for this syndrome. We did find evidence for increases in the within-individual variance as a result of exposure to a high-quality diet. However, these increases were only found for antipredator response and body mass. This indicates that diets with higher energy content can increase the potential for behavioural plasticity in antipredator response. In addition to changes in within-individual variation in behaviour, diet quality during development also mediated the links between maturation time and exploratory behaviours. More exploratory crickets matured faster when exposed to the low-quality developmental diet, but this relation was absent in the high-quality diet treatment. Our results show that changes in developmental diet quality can mediate the relationship between life history and behavioural traits later in life. (C) 2018 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.
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