Allochrony is shaped by foraging niche segregation rather than adaptation to the windscape in long-ranging seabirds.

ABSTRACT:

Background

Ecological segregation allows populations to reduce competition and coexist in sympatry. Using as model organisms two closely related gadfly petrels endemic to the Madeira archipelago and breeding with a two month allochrony, we investigated how movement and foraging preferences shape ecological segregation in sympatric species. We tested the hypothesis that the breeding allochrony is underpinned by foraging niche segregation. Additionally, we investigated whether our data supported the hypothesis that allochrony is driven by species-specific adaptations to different windscapes.

Methods

We present contemporaneous tracking and stable isotopes datasets for Zino's (Pterodroma madeira) and Desertas (Pterodroma deserta) petrels. We quantified the year-round distributio

SUBMITTER: Ventura F 

PROVIDER: S-EPMC10988818 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature