A twinning event in Macaca sylvanus of Gibraltar

Area of Science:

• Primatology
• Comparative Anatomy
• Developmental Biology

Background:

• Understanding growth patterns in non-human primates is crucial for conservation and evolutionary studies.
• Macaca sylvanus (Barbary macaque) populations face conservation challenges, making detailed biological data valuable.

Purpose of the Study:

• To document linear measurements and body proportions of free-ranging Macaca sylvanus twins.
• To compare the twins' morphometrics with those of a full-term perinatal female of the same species.

Main Methods:

• Collection of linear measurements and assessment of body proportions from a set of free-ranging Macaca sylvanus twins.
• Comparative analysis of the twins' measurements against data from a deceased full-term perinatal female Macaca sylvanus.

Main Results:

• The study presents detailed morphometric data for the Macaca sylvanus twins.
• The twins, identified as dizygous, exhibited measurements suggesting a premature birth, approximately 28 days early, when compared to the full-term female.

Conclusions:

• The morphometric data provide insights into the growth and development of premature Macaca sylvanus.
• This comparative analysis highlights potential deviations in body proportions associated with premature birth in this primate species.