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Somatometry of newborn Macaca nemestrina
Folia Primatologica; International Journal of Primatology
|January 1, 1975
Summary
Newborn female Macaca nemistrina monkeys are smaller than males but more developed, requiring less postnatal growth to reach adult size. This study compares cranial and postcranial dimensions across Macaca species.
Area of Science:
- Primatology
- Comparative Anatomy
- Developmental Biology
Background:
- Sexual dimorphism is observed in many primate species.
- Understanding neonatal development is crucial for evolutionary studies.
Purpose of the Study:
- To compare cranial and postcranial anthropometric data of newborn Macaca nemistrina with other Macaca species.
- To investigate sex-based differences in neonatal development and growth potential within the Macaca genus.
Main Methods:
- Collected anthropometric data from 18 male and 14 female newborn Macaca nemistrina.
- Compared these measurements with existing literature data for other Macaca species.
Main Results:
- Female Macaca nemistrina newborns were smaller in all dimensions compared to males.
- Females exhibited greater relative development, indicating less required postnatal growth than males.
- Consistent patterns of sexual dimorphism in size were observed across compared Macaca species.
Conclusions:
- Neonatal size dimorphism in Macaca nemistrina aligns with patterns seen in other Macaca species.
- Females' advanced developmental stage at birth influences their subsequent growth trajectory compared to males.