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Sex-Typed Social Development in Lemur catta.

Stephanie L Meredith^1,2

¹Department of Biological Sciences, University of Southern California, Los Angeles, California, USA.

Folia Primatologica; International Journal of Primatology

|May 8, 2018

Summary

This summary is machine-generated.

Behavioral development in ring-tailed lemurs (Lemur catta) shows sex differences emerge before puberty, challenging the idea of stronger somatic control in strepsirrhines. These early differences suggest strategic social behaviors in immature lemurs.

Keywords:

Development Infant Juvenile Madagascar Ring-tailed lemur Sex differences Social development Social relationships Subadult Young

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Area of Science:

Primate Behavior
Developmental Biology
Evolutionary Psychology

Background:

Strepsirrhine mating behavior suggests stronger somatic control compared to haplorhines.
Previous research indicated a lack of behavioral sex differences in immature strepsirrhines, potentially due to undersampling.
Recent findings in Lemur catta show juvenile foraging sex differences, questioning prior assumptions.

Purpose of the Study:

To document the temporal development of social behaviors in wild Lemur catta over an extended period.
To identify which behaviors are linked to puberty and which are not.
To investigate early-emerging sex differences in social behavior in strepsirrhines.

Main Methods:

Longitudinal study of wild Lemur catta over a prolonged developmental duration.
Observation and documentation of a wide repertoire of social behaviors.
Analysis of behavioral development in relation to pubertal onset.

Main Results:

Sex differences in proximity and agonism were not observed before 2 years of age, aligning with pubertal changes.
Immature females showed adult female-typical interest in infants.
Immature males displayed scent-marking behaviors and attraction to adult males, independent of gonadal maturation.

Conclusions:

Early-emerging sex differences in Lemur catta social behaviors are not solely dependent on gonadal maturation.
Immature Lemur catta exhibit some sex differences similar to immature haplorhines.
These pre-pubertal differences may represent strategic social choices to enhance future reproductive success.