Abstract
This study examined ovarian features of 60 Poeppig's woolly monkey females in different reproductive stages, collected from wild animals hunted by rural communities in the North-eastern Peruvian Amazon, to provide knowledge on the reproductive physiology of this species. The observed mean ovulation rate was 1.73 follicles, reaching a maximum diameter of 1.0cm. After ovulation, the matured follicle luteinizes resulting in functional corpora lutea (CL). In case of oocyte fertilization, the “pregnancy” CL grow to a maximum of 2cm in diameter, and luteal volume decreases related to the advance of pregnancy. Pregnant females have waves of follicular activity until late pregnancy, but dominant follicles do not attain the maximum diameter of pre-ovulatory follicles. Some non-ovulated follicles of 1mm maximum diameter do not undergo atretic processes and transform to accessory CL by luteinization of the membrane granulosa, resulting in a contribution of up to 7% of the total luteal volume. All pregnant females delivered at term only 1.00 foetus, resulting in a rate of reproductive wastage of 33.3% of embryos.
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