Research
The central themes of my research are sexual selection, mate choice, and the evolution of animal behavior. I complement field-based empirical methods with theoretical approaches, and am currently focused on the evolution of choosiness in males, reproductive competition in females, and the potential for sexual selection to shape female traits.
My dissertation research took an empirical approach to examine the
function and evolution of one of the most conspicuously exaggerated sexual traits in female animals: the estrous swelling
that is displayed by many species of cercopithecine primates (“sexual swellings”). In collaboration with the
Amboseli
Baboon Research Project, I used non-invasive field methods to investigate ecological sources of variance in swelling size
as well as the function and evolution of sexual swellings. Results from these studies reject a popular—though largely
untested—hypothesis for the function and evolution of exaggerated swellings (“the reliable indicator hypothesis”),
which has posited that males will prefer females with larger swellings because swelling size indicates heritable
variation in female fitness. Our results do not support this hypothesis, indicating that sexual swellings are not
analogous to, for example, the tail of a peacock.
When can females evolve sexually-selected characters that are analogous to those we observe in males? Likewise, when we see female-specific traits (e.g. throat patch coloration in females of some lizards, rufous belts on belted kingfishers, abdominal air sacs in long-tailed dance flies), how often should we expect them to arise from reproductive competition? In my postdoctoral research, I am using classical approaches from theoretical population genetics to investigate these questions more generally.
Education and professional positionss
2013-Present: Post-doctoral fellow; National Evolutionary Synthesis Center. Primary collaborator:
Maria Servedio.
2012: Ph.D. Duke Biology; Advisor: Susan Alberts.
2003-2006: Research technician; Duke Biology.
1998-2002: Non-academic work; Hetrick-Martin Institute; director of after school photography
program.
1997: BA Visual Art; UNC-Chapel Hill.
Publications
Fitzpatrick, C.L., Altmann, J., Alberts, S.C. Accepted. Estrous
swellings and male mate choice in primates: testing the reliable
indicator hypothesis in the Amboseli baboons. Animal Behaviour.
Fitzpatrick, C.L., 2015. Expanding sexual selection gradients; a
synthetic refinement of sexual selection theory. Ethology
121(3): 207-217
Servedio, M.R., Brandvain, Y., Dhole, S., Fitzpatrick, C.L.,
Goldberg, E.E., Stern, C.A., Van Cleve, J., Yeh, D.J. 2014. Not
just a theory – the utility of mathematical models in
evolutionary biology. PLoS Biology 12(12) e1002017
Fitzpatrick, C.L.. Altmann, J., Alberts, S.C. 2014. Sources of
variance in a fertility signal; exaggerated estrous swellings in
a natural population of baboons. Behavioral Ecology and
Sociobiology 68: 1109-1122
Alberts, S.C. and C.L. Fitzpatrick. 2012. Paternal care and the
evolution of exaggerated sexual swellings in primates.
Behavioral Ecology 23(4): 699-706
Keywords
Evolutionary biology, assortative mating, sexual selection, speciation, evolution in stage/age-structured populations, life history evolution, biodiversity, evolution of aging, metapopulation, eco-evolutionary dynamics, quantitative and population genetics, simulations.