Projects per year
Abstract / Description of output
Associations between heritable polymorphisms and life-history traits, such as development time or reproductive investment, may play an underappreciated role in maintaining polymorphic systems. This is because selection acting on a particular morph could be bolstered or disrupted by correlated changes in life history or vice versa. In a Hawaiian population of the Pacific field cricket (Teleogryllus oceanicus), a novel mutation (flatwing) on the X-chromosome is responsible for a heritable polymorphism in male wing structure. We used laboratory cricket colonies fixed for male wing morph to investigate whether males and females bearing the flatwing or normal-wing (wild-type) allele differed in their life-history traits. We found that flatwing males developed faster and had heavier testes than normal-wings, whereas flatwing homozygous females developed slower and had lighter reproductive tissues than normal-wing homozygous females. Our results advance our understanding of the evolution of polymorphisms by demonstrating that the genetic change responsible for a reproductive polymorphism can also have consequences for fundamental life-history traits in both males and females.
Keywords / Materials (for Non-textual outputs)
- development time
- life history
- reproductive investment
- reproductive polymorphism
- Teleogryllus oceanicus
FingerprintDive into the research topics of 'Sex-specific associations between life-history traits and a novel reproductive polymorphism in the pacific field cricket'. Together they form a unique fingerprint.
- 1 Finished
NERC DTP: U.K. Natural Environment Research Council (Grant NE/L002558/1) University of Edinburgh's E3 Doctoral Training Partnership
1/10/14 → 31/03/18
Project: Other (Non-Funded/Miscellaneous)