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Functional morphology of the female genital organs in the wild ring-tailed coati (Nasua nasua) in the northeastern Peruvian Amazon

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This study examines the functional morphology of genital organs of 45 wild female ring-tailed coatis (Nasua nasua (L., 1766)) in the Peruvian Amazon. The coati shows a seasonal reproductive pattern, with a concentration of births between January and March. The pregnancy rate during the reproductive season was 64.7%. Mean litter size was 4.2 fetuses and mean ovulation rate was 4.5 follicles per pregnant female, resulting in a low rate of embryo or oocyte mortality of 9.8%. The observed vaginal pattern in our study suggests that vaginal cytology could be a useful indicator for the phase of estrus. The present evaluation provides reproductive information that may be a key component in the development of management strategies for both captive and wild coati populations.

Keywords: Amazonie péruvienne; Nasua nasua; Peruvian Amazon; coati roux; female genital organs; organes génitaux femelles; reproduction; ring-tailed coati

Document Type: Research Article


Affiliations: 1: Department of Animal Health and Anatomy, Universitat Autònoma de Barcelona, E-08193, Bellaterra, Barcelona, Spain. 2: YAVACUS, Yavarí Conservación y Uso Sostenible, Iquitos, Peru.

Publication date: January 1, 2013

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  • Published since 1929, this monthly journal reports on primary research contributed by respected international scientists in the broad field of zoology, including behaviour, biochemistry and physiology, developmental biology, ecology, genetics, morphology and ultrastructure, parasitology and pathology, and systematics and evolution. It also invites experts to submit review articles on topics of current interest.
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