Data from: Subordinate females in the cooperatively breeding Seychelles warbler obtain direct benefits by joining unrelated groups
Groenewoud, F. (Creator), Kingma, S. A. (Creator), Hammers, M. (Creator), Dugdale, H. (Creator), Burke, T. (Creator), Richardson, D. S. (Creator) & Komdeur, J. (Creator), University of Groningen, 15-May-2018
- Univ Leeds, University of Leeds, Fac Biol Sci, Sch Biomed Sci
- Univ Sheffield, University of Sheffield, Dept Anim & Plant Sci
2. We aim to elucidate the adaptive significance of subordinate between-group dispersal by examining which factors promote such dispersal, whether subordinates gain improved ecological and social conditions by joining a non-natal group, and whether between-group dispersal results in increased lifetime reproductive success and survival.
3. Using a long-term dataset on the cooperatively-breeding Seychelles warbler (Acrocephalus sechellensis), we investigated how a suite of proximate factors (food availability, group composition, age and sex of focal individuals, population density) promote subordinate between-group dispersal by comparing such dispersers with subordinates that dispersed to a dominant position or became floaters. We then analysed whether subordinates that moved to a dominant or non-natal subordinate position, or became floaters, gained improved conditions relative to the natal territory, and compared fitness components between the three dispersal strategies.
4. We show that individuals that joined another group as non-natal subordinates were mainly female and that, similar to floating, between-group dispersal was associated with social and demographic factors that constrained dispersal to an independent breeding position. Between-group dispersal was not driven by improved ecological or social conditions in the new territory and did not result in higher survival. Instead, between-group dispersing females often became co-breeders, obtaining maternity in the new territory, and were likely to inherit the territory in the future, leading to higher lifetime reproductive success compared to females that floated. Males never reproduced as subordinates, which may be one explanation why subordinate between-group dispersal by males is rare.
5. Our results suggest that subordinate between-group dispersal is used by females to obtain reproductive benefits when options to disperse to an independent breeding position are limited. This provides important insight into the additional strategies that individuals can use to obtain reproductive benefits.
The data package contains one dataset:
- This .zip file contains 10 different datasets, which have been split up for each analysis separately, for easier reproducibility. The info.txt file which is included, explains the data contained in each file.
|Date made available||15-May-2018|
|Publisher||University of Groningen|
|Geographical coverage||Cousin Island, Republic of Seychelles|
|Access to the dataset||Open|
- benefits of philopatry, subordinate between-group dispersal, cooperative breeding, joint nesting, natal dispersal, communal breeding, Acrocephalus sechellensis
Keywords on Datasets
Subordinate females in the cooperatively breeding Seychelles warbler obtain direct benefits by joining unrelated groupsGroenewoud, F., Kingma, S. A., Hammers, M., Dugdale, H. L., Burke, T., Richardson, D. S. & Komdeur, J., Sep-2018, In : Journal of Animal Ecology. 87, 5, p. 1251-1263 13 p.
Research output: Contribution to journal › Article › Academic › peer-review
Why do social species live longer? - Investigating interactions between helping and senescence in cooperatively breeding animals
16/11/2015 → 16/11/2019