Unlearned adaptive responses to heterospecific referential alarm calls in two bird species from separate evolutionary lineages

Ha Jungmoon, Lee Keesan, Yang Eunjeong, Kim Woojoo, Song Hokyung, Hwang Injae, Lee Cruz Larisa, Park Jinseok, Song Jihyeon, Park Chan-ryul, Lee Wooshin, Jablonski Piotr, Lee Sang-im. 2023. Unlearned adaptive responses to heterospecific referential alarm calls in two bird species from separate evolutionary lineages. Scientific Reports, 13:20287, 15 p.

https://doi.org/10.1038/s41598-023-47052-5

Article de revue ; Article de recherche ; Article de revue à facteur d'impact Revue en libre accès total

Prévisualisation

Version publiée - Anglais
Sous licence

.
611088.pdf
Télécharger (1MB) | Prévisualisation

Résumé : The interspecific responses to alarm signals may be based on unlearned mechanisms but research is often constrained by the difficulties in differentiating between unlearned and learned responses in natural situations. In a field study of two Paridae species, Parus minor and Sittiparus varius, who originated from a common ancestor 8 million years ago, we found a considerable degree of between-species overlap in acoustic properties of referential snake-alarm calls. Playback of these calls triggered unlearned adaptive fledging behavior in conspecific and heterospecific naive nestlings, suggesting a between-species overlap in the hypothetical unlearned neural templates involved in nestlings' reactions to alarm calls in both species. This suggests that similar calls and similar unlearned sensitivity might have been present in the common ancestor of the two species, and possibly in the ancestor of the whole family Paridae that originated 10–15 million years ago in Asian regions rich in snakes.

Mots-clés Agrovoc : propriété acoustique, serpent, phylogénie, acoustique, propriété physicochimique, oiseau

Mots-clés libres : Behavioural ecology, Evolution

Agences de financement hors UE : Daegu Gyeongbuk Institute of Science and Technology

Auteurs et affiliations