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Updated: Jun 15, 2026

Embryo Rescue Protocol for Interspecific Hybridization in Squash
Published on: September 12, 2022
Hybridization between Alouatta caraya and Alouatta guariba clamitans in captivity
Anamélia de Souza Jesus1, Hugo Eduardo Schunemann, Jackson Müller
1Laboratório de Primatologia, Faculdade de Biociências, Pontifícia Universidade Católica do Rio Grande do Sul, Av. Ipiranga, Porto Alegre, RS, 90619-900, Brazil.
Abstract:
Hybridization between Alouatta spp. has been suggested at contact zones of A. palliata and A. pigra in Mexico and of A. caraya and A. guariba clamitans in Brazil and Argentina. Whereas genetic data confirmed hybridization between the former pair of species, hybrid individuals of the latter pair have been putatively identified on the basis of a mosaic pelage color. In this paper, we describe the first confirmed cases of hybridization between a female A. guariba clamitans and a male A. caraya. One hybrid male was born in 2007 and one hybrid female was born in 2009 with distinct coat colors. The male resembled the newborn color pattern characteristic of A. guariba clamitans, whereas the female resembled the newborn pattern of A. caraya. The birth and survival of the male hybrid for a year and a half indicated the viability of the heterogametic sex.
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