Journal
BEHAVIOURAL PROCESSES
Volume 109, Issue -, Pages 27-33Publisher
ELSEVIER
DOI: 10.1016/j.beproc.2014.06.009
Keywords
Aggression; Animal mating behaviour; Callithrix jacchus; Competitive behaviour; Cooperative behaviour; Reproductive behaviour
Categories
Funding
- Federal University of Rio Grande do Norte (UFRN), National Council for Scientific and Technological Development [307418/2009-0, 305102/2009-5, 303466/2012-0, 480664/2011-7, 409511/2013-7]
- CNPq
- Coordination for the Improvement of Higher Education Personnel (CAPES)
- Research Support Foundation of Rio Grande do Norte State [010/2009]
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Marmosets are cooperative breeders organized as extended family groups, but breeding is generally restricted to a single pair. Breeding competition is fierce in female marmosets; males, on the other hand, show low levels of intragroup aggression. We investigated male and female breeding strategies and the resulting reproductive output in 9 wild groups. Reproductive output, tenure of breeding animals, identification of the breeding system, breeding position replacements, migration and infanticide were recorded; also, we recorded grooming and aggression. Replacement of the breeding male or female was observed on nine occasions. On four occasions, the son of the breeding male inherited the breeding post, but we never observed inheritance of a breeding post by a daughter. Mostly, females attained a breeding post by immigrating to a group that had a breeding vacancy. Our results showed that Callithrix jacchus males and females use different strategies to attain a breeding position and maintain it for as long as possible. These strategies prolong the tenure of the breeding position, which is the best way to produce a large number of offspring. This article is part of a Special Issue entitled: Neotropical Behaviour. (C) 2014 Elsevier B.V. All rights reserved.
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