Mother-offspring associations in northern muriquis, Brachyteles hypoxanthus

Article Abstract:

A study of ten mothers, each with two-six offsprings from August 2003- May 2004 at the RPPN- Feliciano Miguel Abdala in Minas Gerais, Brazil, to determine the mother-offspring relationship in wild northern muriquis (Brachyteles hypoxanthus), where males are philopatric, females generally disperse before puberty, and social relationships between and among males and females are egalitarian is mentioned. The observation of non-preferential relation between muriqui mother and their older male offspring indicate that extended maternal investment in offspring is of nominal importance in their egalitarian community in comparison with its significance for species inhibiting in hierarchical societies.

Public affairs, Social aspects, Behavior, Parental behavior in animals, Animal parental behavior, Spider monkeys, Animal parental behaviour

---

Variation in the resumption of cycling and conception by fecal androgen and estradiol levels in female northern muriquis (Brachyteles hypoxanthus)

Article Abstract:

Fecal androgen and estradiol levels in female northern muriquis were measured at the Estacao Biologica de Caratinga/RPPN Feliciano Miguel Abdala, Minas Gerais, Brazil, to evaluate the hormonal bases underlying individual variation in the resumption of cycling and conception. It was found that androgen levels were significantly lower in females than in males, and that there were no consistent patterns in female androgen levels across precycling or cycling conditions.

Genetic aspects, Androgens

---

Hormonal changes during the mating and conception season of wild northern muriquis (Brachyteles arachnoides hypoxanthus)

Article Abstract:

Hormonal and behavioral changes in wild male and female northern muriquis (Brachyteles arachnoides hypoxanthus) during six-month period of onset of mating and conception seasons in Brazil are investigated. Females experienced two to seven cycles prior to conceiving after the onset of the groups mating season, while male cortisol levels were positively correlated between years.

Sexual behavior, Behavioral assessment, Hormone research, Behavioural assessment

Similar abstracts:

• Abstracts: Cost offset from a psychiatric consultation-liaison intervention with elderly hip fracture patients. Effect of a psychiatric liaison program on consultation rates and on detection of minor psychiatric disorders in cancer patients
• Abstracts: On measuring tax evasion. Influencing the prospects of tax evasion. True positives and false alarms in the detection of tax evasion
• Abstracts: Risk principle of case classification in correctional treatment: A meta -analytic investigation. The effectiveness of relapse prevention with offenders: a meta-analys
• Abstracts: Predation of arthropods by southern bearded sakis (Chiropotes satanas) in Eastern Brazilian Amazonia. Morphologic, karyotypic and molecular evidence of a new form of Chiropotes (primates, Pitheciinae)
• Abstracts: Social influences on the acquisition of sex-typical foraging patterns by juveniles in a group of wild tufted capuchin monkeys (cebus nigritus)

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.