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Social groups with diverse personalities mitigate physiological stress in a songbird
bioRxiv - Ecology Pub Date : 2021-01-08 , DOI: 10.1101/2020.04.15.043471
Csongor I. Vágási , Attila Fülöp , Gergely Osváth , Péter L. Pap , Janka Pénzes , Zoltán Benkő , Ádám Z. Lendvai , Zoltán Barta

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.

中文翻译:

具有不同个性的社会群体减轻了鸣禽的生理压力

社会群体通常由不同的表型组成,包括人格类型,这种多样性会影响整个群体的功能。社会选择理论提出,群体组成(即社会环境)也会影响单个群体成员的表现。然而,群体行为构成对群体成员的影响仍未得到充分探索,个人是否在行为构成相同或多样的社会环境中受益更多仍是有争议的。我们房子的实验形成的组麻雀麻雀具有高低的人格多样性(探索性行为),并发现他们的生理状态(身体状况,生理压力和氧化损伤)随着人的团体级别人格多样性的提高而改善。这些发现表明,群体人格组成会影响群体成员的状况,个人受益于社会异质性(即与各种行为类型相关联)。社会生活的这一方面可以在社会动物的隶属关系规则中发挥关键作用,并且可以解释自然界中不同个性的进化共存。
更新日期:2021-01-10
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