Ultrasonographic and Endocrinological Characterization of Luteogenesis in Pregnant and Non-Pregnant Asian Elephants

One of the numerous unique reproductive features in elephants is the presence of multiple corpora lutea (CL) on their ovaries. Despite enhanced research efforts in the past 15 years and diverse theories about the auxiliary CLs, their origin, function and formation during the reproductive cycle and pregnancy remain a mystery. Results of this study provided 1) a better idea of the female’s cycle stage by the appearance of the ovarian functional structures, and 2) provided greater knowledge of the function and formation of luteal tissue and their hormonal triggers which will help to improve contraceptives in wild African elephants.

IEF #EX1011

Project Years: 2008

Project Partners:
University of Guelph African Lion Safari, Institute for Zoo and Wildlife Medicine (IZW)