SciELO - Scientific Electronic Library Online

vol.5 issue1Eunotiales (Bacillariophyceae) of continental waters of the State of São Paulo: floristic surveyLight quality and quantity in the four most important phytogeographic formations of the State os São Paulo along 2003 author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Biota Neotropica

On-line version ISSN 1676-0611

Biota Neotrop. vol.5 no.1 Campinas  2005 



Morphological aspects of the reproductive tract of the howler monkey (Alouatta guariba clamitans e Alouatta caraya): the female model



Mariana Matera Veras




Brazil has about 133 primate's species and subspecies among which 35% are endemic. The land occupation, the natural environments destruction, hunting and the illegal commerce of wild animals left some species seriously threatened of extinction. The present study deals with the morphology of the reproductive tract of howler monkeys (Alouatta guariba clamitans and Alouatta caraya), wich data can subdize further reproduction researches, aiming its conservation. Ten female reproductive tract were studied microscopically and macroscopically. The age of the animals was estimated using a dental-age key, most of them were sexually mature. Representative fragments of the uterus, ovary, uterine tube and vagina were cut and prepared for histology and scanning electron microscopy. Our data showed that the Alouatta female vulva resembles the external genitalia of the male. The uterus are pyriform and caracterized by a long cervix. The muscular layer of the cervix was well developed and the musculature of the body of the uterus showed a particular organization. The vaginal epithelium showed no ciclic alterations. The most significant feature found seems to be the presence of abundant glandular interstitial tissue in the compact ovaries. The female reproductive tract morphology of the howler monkey showed similarities with other Platyrrhini and few interespecific (Alouatta guariba clamitansAlouatta caraya) differences.

Key-words: Primates, Animal anatomy, Morphology, female



Dissertação (Mestrado) — Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia, Departamento de Cirurgia, 2004.
Área de concentração: Anatomia dos Animais Domésticos e Silvestres
Orientador: Profa. Dra. Maria Angélica Miglino E-MAIL:

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License