Published online by Cambridge University Press: 10 August 2009
CHAPTER SUMMARY
In this chapter we explore the diversity of alternative reproductive tactics (ARTs) exhibited by reptiles. There is a rich literature on ARTs in a broad diversity of reptile lineages, and our contribution is therefore not an exhaustive one. Rather, we attempt to cover topics of general significance to many fields of study, including differences in male and female reproductive behavior, sex ratio adjustment and progeny gender manipulation, and the role of parthenogenesis in mating systems. Our goal is to provide a representative portrait of the diversity of tactics displayed among reptilian lineages, but we often illustrate more elaborate points using data from side-blotched lizards, Uta stansburiana, a system that we have been working on together for a decade. Throughout the chapter we emphasize the distinction between the proximate and the ultimate mechanisms that underlie the evolution of alternative tactics. We conclude with a brief discussion of potentially exciting future research directions in reptilian systems.
INTRODUCTION
Exploring alternative reproductive tactics (ARTs) in reptiles presents a great challenge given the diverse nature of these taxa. Modern reptilian lineages are paraphyletic with ancient histories. Some extinct reptilian groups such as the dinosaurs undoubtedly exhibited alternative reproductive tactics, given the documented dichotomy between precocial (Geist and Jones 1996, Varricchio et al. 1997) and altricial young (Horner 2000) in various dinosaur lineages. This dichotomy in the developmental tactics of young is strongly associated with the mating systems in the surviving descendants of dinosaurs, the birds.
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.