title: Ovarian function in captive owl monkeys (Aotus nancymaae and A. vociferans).
abstract: BACKGROUND
  Ovarian function and morphology of owl monkeys (Aotus spp.) is inadequately known, but it is essential to describe this organ in detail to better understand reproductive patterns of the species.
  
  
  METHODS
  This study reports the anatomical and histological features of the ovaries from 41 owl monkeys, considering their reproductive status and parity.
  
  
  RESULTS
  The corpora lutea (CL) and reproductive state had a significant effect on ovarian volume. Follicles were observed in both pregnant and non-pregnant subjects. All females in the luteal phase and pregnant females showed at least one cyclic or pregnancy CL. Mean ovulation rate was 1.89 CL/female, and the mean ovum mortality was 37.5%. There were no significant differences in ovarian volume related to parity.
  
  
  CONCLUSIONS
  These results contribute to the scarce information available on the reproductive biology of owl monkeys and can aid in the development of biotechnologies involved in assisted reproduction.
authors.affiliation: Department of Animal Health and Anatomy, Faculty of Veterinary, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain.|YAVACUS, Yavarí Conservación y Uso Sostenible, Iquitos, Perú
authors.forename: Pedro
authors.initials: P
authors.lastname: Mayor
authors.affiliation: Department of Ecology and Social Behavior, Primate Research Institute, Kyoto University, Inuyama, Aichi, Japan.
authors.forename: Rafaela S C
authors.initials: RS
authors.lastname: Takeshita
authors.affiliation: Postgraduate Program in Animal Health and Production in Amazonia, Universidade Federal Rural da Amazonia, Belém, Pará, Brazil.
authors.forename: Leandro Nassar
authors.initials: LN
authors.lastname: Coutinho
authors.affiliation: Instituto Veterinario de Investigaciones Tropicales y de Altura, Universidad Nacional Mayor de San Marcos, San Marcos, Perú
authors.forename: Nofre
authors.initials: N
authors.lastname: Sánchez
authors.affiliation: Instituto Veterinario de Investigaciones Tropicales y de Altura, Universidad Nacional Mayor de San Marcos, San Marcos, Perú
authors.forename: Hugo
authors.initials: H
authors.lastname: Gálvez
authors.affiliation: Instituto Veterinario de Investigaciones Tropicales y de Altura, Universidad Nacional Mayor de San Marcos, San Marcos, Perú
authors.forename: Carlos
authors.initials: C
authors.lastname: Ique
authors.affiliation: Postgraduate Program in Animal Health and Production in Amazonia, Universidade Federal Rural da Amazonia, Belém, Pará, Brazil.|Department of Veterinary Sciences, The University of Texas MD Anderson Cancer Center, Bastrop, TX, USA.
authors.forename: Frederico Ozanan Barros
authors.identifier: http://orcid.org/0000-0002-1406-9979
authors.initials: FO
authors.lastname: Monteiro
mesh_terms: D000818:Animals; D016645:Aotidae / Q000033:anatomy & histology / Q000502:physiology*; D003338:Corpus Luteum / Q000033:anatomy & histology / Q000502:physiology; D005260:Female; D009929:Organ Size; D006080:Ovarian Follicle / Q000033:anatomy & histology / Q000502:physiology; D010053:Ovary / Q000033:anatomy & histology / Q000502:physiology*; D010298:Parity; D011247:Pregnancy
keywords: Aotus; morphology; ovaries; owl monkey; reproduction