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Population structure of olive baboons (Papio anubis (J. P. Fischer)) in the Laikipia District of Kenya
Author(s) -
BERGER MICHAEL E.
Publication year - 1972
Publication title -
african journal of ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.499
H-Index - 54
eISSN - 1365-2028
pISSN - 0141-6707
DOI - 10.1111/j.1365-2028.1972.tb00724.x
Subject(s) - papio anubis , offspring , juvenile , biology , population , demography , baboon , adult male , sex ratio , pregnancy , ecology , endocrinology , genetics , sociology
Summary A study of the population structure of olive baboons {Papio anubis (J. P. Fischer)) was conducted near Rumuruti and Nanyuki in the Laikipia District of Kenya during 1969. The overall male: female ratio was 96:100 for all animals captured. The sex ratio of immature baboons favoured males, while adult females outnumbered adult males. Male baboons demonstrated an increased mortality during the juvenile stage primarily due to exploratory behaviour. Female baboons demonstrated an increased mortality incurred during the first pregnancy or birth early in the adult stage. About 50 % of adult females had an infant offspring, while about 75% had a juvenile offspring. Adult female baboons in their native environment produce an offspring every 2.5‐3.0 years. No birth peak was discernable and births occurred throughout the year.