Shifting daylength regimes associated with range shifts alter aphid-parasitoid community dynamics.

ABSTRACT: With climate change leading to poleward range expansion of species, populations are exposed to new daylength regimes along latitudinal gradients. Daylength is a major factor affecting insect life cycles and activity patterns, so a range shift leading to new daylength regimes is likely to affect population dynamics and species interactions; however, the impact of daylength in isolation on ecological communities has not been studied so far. Here, we tested for the direct and indirect effects of two different daylengths on the dynamics of experimental multitrophic insect communities. We compared the community dynamics under "southern" summer conditions of 14.5-hr daylight to "northern" summer conditions of 22-hr daylight. We show that food web dynamics indeed respond to daylength with one aph

SUBMITTER: Kehoe RC 

PROVIDER: S-EPMC6157684 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature