Published online by Cambridge University Press: 05 June 2012
Overview
How and when social behaviour evolves has long been a focus of study within evolutionary biology, yielding the entire subfield of sociobiology and behavioural ecology. Although social behaviours may be explored in the same way as any other type of phenotype, the genetics underlying social behaviours differ from traits that do not vary depending on the social environment in which they are expressed. Social behaviour is best described as an interacting phenotype: a phenotype that depends at least in part on interactions with social partners for its expression. Models of indirect genetic effects provide a quantitative genetic framework for understanding the sources of variation underlying interacting phenotypes. They also suggest a genetic mechanism for inheriting traits that are expressed among rather than within individual animals, and identify selection arising from the interactions (termed social selection).
This chapter will first introduce the concepts of interacting phenotypes, indirect genetic effects, and social selection. We build a quantitative genetic model for interacting phenotypes and discuss how the evolution of such traits differs from non-interacting traits. We then explore the parameters of the model in more depth. We subsequently summarise existing empirical studies of indirect genetic effects, discuss the implications for the evolution of behavioural traits through social selection, and discuss transitions between quantitative genetic and molecular genetic approaches to studying behavioural evolution. Finally, we highlight potential future avenues of research.
To save this book to your Kindle, first ensure no-reply@cambridge.org 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.