Source Themes

Condition dependence of phenotypic integration and the evolvability of genitalic traits in a neriid fly.

The spectacular diversity of insect male genitalia, and their relative insensitivity to the environment, have long puzzled evolutionary biologists and taxonomists. We asked whether the unusual evolvability of male genitalia could be associated with …

Parental breeding age effects on descendants' longevity interact over 2 generations in matrilines and patrilines

Breeding age negatively influences offspring lifespan and ageing over two generations in both patrilines and matrilines.

Effects of condition and sperm competition risk on sperm allocation and storage in neriid flies.

Ejaculate traits can be sexually selected and often exhibit heightened condition-dependence. However, the influence of sperm competition risk in tandem with condition-dependent ejaculate allocation strategies is relatively unstudied. Because …

Perceived dominance status affects chemical signalling in the neriid fly.

Chemical communication mediates many social interactions in insects but is still less well understood than other forms of communication. In particular, chemical signalling of social dominance is believed to play an important role in competitive …

Ontogenetic timing as a condition-dependent life history trait: High-condition males develop quickly, peak early, and age fast.

Within‐population variation in ageing remains poorly understood. In males, condition‐dependent investment in secondary sexual traits may incur costs that limit ability to invest in somatic maintenance. Moreover, males often express morphological and …