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Behavioural mediators of genetic life-history trade-offs: a test of the pace-of-life syndrome hypothesis in field crickets.
- Source :
-
Proceedings of the Royal Society B: Biological Sciences . 10/11/2017, Vol. 284 Issue 1864, p1-8. 8p. - Publication Year :
- 2017
-
Abstract
- The pace-of-life syndrome (POLS) hypothesis predicts associations between life history and 'risky' behaviours. Individuals with 'fast' lifestyles should develop faster, reproduce earlier, exhibit more risk-prone behaviours, and die sooner than those with 'slow' lifestyles. While support for POLS has been equivocal to date, studies have relied on individual-level (phenotypic) patterns in which genetic trade-offs may be masked by environmental effects on phenotypes. We estimated genetic correlations between life history (development, lifespan, size) and risky behaviours (exploration, aggression) in a pedigreed population of Mediterranean field crickets (Gryllus bimaculatus). Path analyses showed that behaviours mediated some genetic relationships between life history traits, though not those involved in trade-offs. Thus, while specific predictions of POLS theory were not supported, genetic integration of behaviour and life history was present. This implies a major role for risky behaviours in life history evolution. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09628452
- Volume :
- 284
- Issue :
- 1864
- Database :
- Academic Search Index
- Journal :
- Proceedings of the Royal Society B: Biological Sciences
- Publication Type :
- Academic Journal
- Accession number :
- 126031635
- Full Text :
- https://doi.org/10.1098/rspb.2017.1567