Alexandra J. Sacco

Alexandra J. Sacco
Washington University in St. Louis | WUSTL , Wash U · Department of Anthropology

Master of Science


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I am currently a Ph.D. student in the Reproductive Ecology and Behavioral Endocrinology Lab (REBEL) at Washington University in St. Louis. I am interested in primate health, more specifically a combination of behavioral endocrinology, genetics, and microbial analyses. For my dissertation work, I plan to study red colobus monkeys (Piliocolobus tephrosceles) in Kibale National Park.


Publications (4)
Full-text available
Program Timing: Trap habituation begins in May. Trapping and sample collection occur annually during the rainforest dry season (June - August). Sample transport and analyses occur between September and April. Capture Overview: Entire primate social groups are captured together in multi-compartment traps in the morning to ensure same day release (~...
Urinary C-peptide (UCP) is a biomarker for insulin that can be used as a non-invasive physiological measure of energy balance. Previous research has validated the use of UCP to quantify energy balance in catarrhines; however, there have been no such studies in platyrrhines. Validation is necessary in this lineage of primates as divergent evolution...
Full-text available
Background Non-invasive biomarkers can facilitate health assessments in wild primate populations by reducing the need for direct access to animals. Neopterin is a biomarker that is a product of the cell-mediated immune response, with high levels being indicative of poor survival expectations in some cases. The measurement of urinary neopterin conce...
This thesis is composed of one journal-ready article and one chapter that includes a preliminary interpretation of data for later publication. In summary, this thesis proposes the use of three different methods of evaluating the health status of New World Monkeys: urinary neopterin measurement, blood chemistry analyses, and urinalysis. Chapter II...


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