Abstract:
:While competition for limited breeding positions is a common feature of group life, species vary widely in the extent to which reproduction is shared among females ('reproductive skew'). In recent years, there has been considerable debate over the mechanisms that generate variation in reproductive skew, with most evidence suggesting that subordinates breed when dominants are unable to prevent them from doing so. Here, we suggest that viviparity reduces the ability of dominant females to control subordinate reproduction and that, as a result, dominant female birds are more able than their mammal counterparts to prevent subordinates from breeding. Empirical data support this assertion. This perspective may increase our understanding of how cooperative groups form and are stabilized in nature.
journal_name
Biol Lettjournal_title
Biology lettersauthors
Raihani NJ,Clutton-Brock THdoi
10.1098/rsbl.2010.0159subject
Has Abstractpub_date
2010-10-23 00:00:00pages
630-2issue
5eissn
1744-9561issn
1744-957Xpii
rsbl.2010.0159journal_volume
6pub_type
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