I have spent seven years investigating the relative effects of habitat disturbance and degradation and the presence or absence of sympatric congeners on the behavioral ecology (diet, activity, ranging, and social behavior) of the gentle gray bamboo lemur, Hapalemur griseus. Interestingly, site differences are sometimes not as important as differences in microhabitat for determining things like diet, for example, in this species. It is the characteristics of the group's home range that has a major impact on the behavioral ecology of this species. In addition, this research has provided insights into sex differences in this and other species' behavior.

Grassi, C. 2002. Sex differences in feeding, height use, and space use in
Hapalemur griseus. International Journal of Primatology. 23(3): 677-693.

Sommer, J., Barber, R, Huebinger, R. Grassi, C. Williamson, J., and Louis,
E. 2002. Characterization of fourteen microsatellite marker loci in the
gray bamboo lemur (Hapalemur griseus). Molecular Ecology Notes. 2(2): 161-163.

Dalecky, A., Kerdelhué, C. Johnson, S. Razafindratsita, V.R., Grassi, C.
Razafiarimalala, A.C., Overdorff, D. and Rasplus, J.-Y. 2003. Moraceae, Ficus and associated fauna. In: Madagascar a
Natural History. Benstead and Goodman eds. 322-334. Chicago: University of Chicago Press.

Grassi, C. 2006. Variability in habitat, diet, and social structure
of Hapalemur griseus griseus. American Journal of Physical Anthropology. 131: 50-63.

Wooding, S., Bufe, B., Grassi, C., Howard, M., Stone, A., Vazquez, M., Dunn, D., Meyerhof, W., Weiss, R., and Bamshad, M. Convergent evolution of bitter taste sensitivity in humans and chimpanzees. Nature. (in review).