期刊
BIOLOGY LETTERS
卷 10, 期 10, 页码 -出版社
ROYAL SOC
DOI: 10.1098/rsbl.2014.0561
关键词
corticosterone; development; foraging; social network; stress; zebra finch
资金
- Netherlands Organisation for Scientific Research Rubicon
- NSF [NSF-IOS1250895]
- BBSRC [BB/L006081/1]
- BBSRC David Phillips Research Fellowship
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [1250895] Funding Source: National Science Foundation
- Biotechnology and Biological Sciences Research Council [BB/E024459/1, BB/L006081/1, BB/E024459/2] Funding Source: researchfish
- BBSRC [BB/L006081/1, BB/E024459/1, BB/E024459/2] Funding Source: UKRI
The quantity and quality of social relationships, as captured by social network analysis, can have major fitness consequences. Various studies have shown that individual differences in social behaviour can be due to variation in exposure to developmental stress. However, whether these developmental differences translate to consistent differences in social network position is not known. We experimentally increased levels of the avian stress hormone corticosterone (CORT) in nestling zebra finches in a fully balanced design. Upon reaching nutritional independence, we released chicks and their families into two free-flying rooms, where we measured daily social networks over five weeks using passive integrated transponder tags. Developmental stress had a significant effect on social behaviour: despite having similar foraging patterns, CORT chicks had weaker associations to their parents than control chicks. Instead, CORT chicks foraged with a greater number of flock mates and were less choosy with whom they foraged, resulting in more central network positions. These findings highlight the importance of taking developmental history into account to understand the drivers of social organization in gregarious species.
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