Two Breeding Females within Free-Living Groups May Not Always Indicate Polygyny: Alternative Subordinate Female Strategies in Common Marmosets (Callithrix jacchus)

@article{Arruda2005TwoBF,
  title={Two Breeding Females within Free-Living Groups May Not Always Indicate Polygyny: Alternative Subordinate Female Strategies in Common Marmosets (Callithrix jacchus)},
  author={Maria de F{\'a}tima Arruda and Arrilton Ara{\'u}jo and Maria Bernardete Cordeiro de Sousa and Fab{\'i}ola da Silva Albuquerque and Ana Claudia Sales da Rocha Albuquerque and M Emilia Yamamoto},
  journal={Folia Primatologica},
  year={2005},
  volume={76},
  pages={10 - 20}
}
The mating system of callitrichids has been reported to be monogamous, polygynous and polyandrous. In Callithrix jacchus, groups with 2 breeding females and groups with 1 breeding female have been reported. Our purpose was to evaluate the occurrence of occasional reproduction by subordinate females in free-ranging C. jacchus groups characterized as monogamous. Four groups were monitored at a field site of IBAMA-Brazil for between 20 and 72 months. We recorded the birth of 7 sets of twins to… 

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