Published online by Cambridge University Press: 05 June 2012
Overview
Cooperation is a ubiquitous feature of life. While many instances of cooperation are explicable as the selfish motives of individuals, other forms of cooperation, such as cooperative breeding in which individuals live and breed in mixed-sex groups of three or more adults and share in providing care at a single breeding attempt, are difficult to explain. Given that the majority of cooperative breeders exhibit delayed dispersal, it would appear that delayed dispersal plays a role in the evolution of cooperative breeding. However, there are several species that, despite the absence of cooperative breeding, live in family units. Thus it is important to understand the specific fitness consequences of delayed dispersal independently of the confounding fitness consequences of helping behaviour.
In this chapter we focus on how delayed dispersal has evolved or can be maintained in the absence of cooperative breeding. We do this by exploring the proximate and ultimate factors involved in the evolution of delayed dispersal in species which exhibit delayed dispersal but do not cooperate by helping to raise non-descendant relatives. We show that the benefits of delaying dispersal and being philopatric to maintain a family association can come either as direct fitness gained through enhanced survival in family groups (e.g. better predator defence or food access) and/or enhanced future reproduction. Survival benefits from cooperation among group-living kin are likely to be a more general candidate of a fitness component selecting for family cohesion than the inclusive fitness gains from alloparental care.
To save this book to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Find out more about the Kindle Personal Document Service.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.