Social groups with diverse personalities mitigate physiological stress in a songbird.

Autor: Vágási CI; Evolutionary Ecology Group, Hungarian Department of Biology and Ecology, Babeș-Bolyai University, Cluj-Napoca, Romania.; Department of Evolutionary Zoology, University of Debrecen, Debrecen, Hungary., Fülöp A; MTA-DE Behavioural Ecology Research Group, Department of Evolutionary Zoology, University of Debrecen, Debrecen, Hungary.; Juhász-Nagy Pál Doctoral School, University of Debrecen, Debrecen, Hungary., Osváth G; Evolutionary Ecology Group, Hungarian Department of Biology and Ecology, Babeș-Bolyai University, Cluj-Napoca, Romania.; Museum of Zoology, Babeș-Bolyai University, Cluj-Napoca, Romania.; Department of Evolutionary Zoology, University of Debrecen, Debrecen, Hungary., Pap PL; Evolutionary Ecology Group, Hungarian Department of Biology and Ecology, Babeș-Bolyai University, Cluj-Napoca, Romania.; Department of Evolutionary Zoology, University of Debrecen, Debrecen, Hungary., Pénzes J; Evolutionary Ecology Group, Hungarian Department of Biology and Ecology, Babeș-Bolyai University, Cluj-Napoca, Romania., Benkő Z; Evolutionary Ecology Group, Hungarian Department of Biology and Ecology, Babeș-Bolyai University, Cluj-Napoca, Romania.; Romanian Ornithological Society/BirdLife Romania, Cluj-Napoca, Romania., Lendvai ÁZ; Department of Evolutionary Zoology, University of Debrecen, Debrecen, Hungary., Barta Z; MTA-DE Behavioural Ecology Research Group, Department of Evolutionary Zoology, University of Debrecen, Debrecen, Hungary.
Jazyk: angličtina
Zdroj: Proceedings. Biological sciences [Proc Biol Sci] 2021 Jan 27; Vol. 288 (1943), pp. 20203092. Date of Electronic Publication: 2021 Jan 27.
DOI: 10.1098/rspb.2020.3092
Abstrakt: Social groups often consist of diverse phenotypes, including personality types, and this diversity is known to affect the functioning of the group as a whole. Social selection theory proposes that group composition (i.e. social environment) also influences the performance of individual group members. However, the effect of group behavioural composition on group members remains largely unexplored, and it is still contentious whether individuals benefit more in a social environment with homogeneous or diverse behavioural composition. We experimentally formed groups of house sparrows Passer domesticus with high and low diversity of personality (exploratory behaviour), and found that their physiological state (body condition, physiological stress and oxidative damage) improved with increasing group-level diversity of personality. These findings demonstrate that group personality composition affects the condition of group members and individuals benefit from social heterosis (i.e. associating with a diverse set of behavioural types). This aspect of the social life can play a key role in affiliation rules of social animals and might explain the evolutionary coexistence of different personalities in nature.
Databáze: MEDLINE