alexa The effect of parturition on the interactions within pairs of common marmosets (Callithrix jacchus).

Journal of Primatology

Author(s): Mota MT, Sousa MB, Campos MF

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Abstract The relationship within common marmoset (Callithrix jacchus) pairs is based on pair-bond formation. This pair-bond is important for the successful rearing of the young and for the enhancement of reproductive success. Female marmosets bear twins which are carried mainly by males starting on the first day after the birth of the infants. Little is known, however, about the patterns of sociosexual interaction between callitrichid pairs and how these interactions change after the arrival of offspring. To evaluate the effect of parturition on these interactions, three heterosexual pairs of common marmosets were observed for four weeks before and four weeks after the birth of infants. The animals were kept in individual outdoor cages of the Nucleo de Primatologia, under environmental conditions. The time spent in proximity was mainly attributable to the initiative of females before parturition and the initiative of males after the offspring arrived. Males were groomed more before than after the birth of infants. In contrast, the amount of grooming received by females was the same in the two situations. These observations suggest that the relationship within pairs of common marmosets is slightly modified by the birth of infants and indicates that males and females could be using different strategies to enhance their reproductive success.
This article was published in Braz J Med Biol Res and referenced in Journal of Primatology

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