Format

Send to

Choose Destination
Ecol Evol. 2015 Jul;5(14):2787-97. doi: 10.1002/ece3.1549. Epub 2015 Jun 24.

Related male Drosophila melanogaster reared together as larvae fight less and sire longer lived daughters.

Author information

1
Edward Grey Institute, Department of Zoology, University of Oxford Oxford, UK ; Cavanilles Institute of Biodiversity and Evolutionary Biology, University of Valencia Valencia, Spain.
2
Edward Grey Institute, Department of Zoology, University of Oxford Oxford, UK ; Jesus College, University of Oxford Oxford, UK.
3
Edward Grey Institute, Department of Zoology, University of Oxford Oxford, UK.

Abstract

Competition over access to reproductive opportunities can lead males to harm females. However, recent work has shown that, in Drosophila melanogaster, male competition and male harm of females are both reduced under conditions simulating male-specific population viscosity (i.e., in groups where males are related and reared with each other as larvae). Here, we seek to replicate these findings and investigate whether male population viscosity can have repercussions for the fitness of offspring in the next generation. We show that groups of unrelated-unfamiliar (i.e., unrelated individuals raised apart) males fight more intensely than groups of related-familiar males (i.e., full siblings raised together as larvae), supporting previous findings, and that exposure to a female is required to trigger these differential patterns of male-male competition. Importantly, we show that differences in male-male competition can be associated with transgenerational effects: the daughters of females exposed to unrelated-unfamiliar males suffered higher mortality than the daughters of females exposed to related-familiar males. Collectively, these results suggest that population structure (i.e., variation in the relatedness and/or larval familiarity of local male groups) can modulate male-male competition with important transgenerational consequences.

KEYWORDS:

Drosophila; familiarity; kin recognition; kin selection; maternal effects; sexual conflict; transgenerational effects

Supplemental Content

Full text links

Icon for Wiley Icon for PubMed Central
Loading ...
Support Center