Behavioural response to songs between genetically diverged allopatric populations of Darwin's small tree finch in the Galapagos.

ABSTRACT: Empirical data that identify contemporary mechanisms of divergence shed light on how species could multiply. In this study, we measured population genetic structure, song syllable diversity and response to simulated intruder song in Darwin's small tree finch (Camarhynchus parvulus) on Santa Cruz and Floreana Islands, Galápagos archipelago. Our aim was to test whether the magnitude of contemporary behavioural response in resident birds was consistent with patterns of genetic or cultural differences between populations. We analysed genetic structure and the occurrence of song syllable types, and experimentally measured the response of resident birds to intruder bird song from different geographical origin (i.e., island) or syllable type. We discovered a weak signal of population genetic stru

SUBMITTER: Colombelli-Negrel D 

PROVIDER: S-EPMC8251970 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature