Abstract
Reproduction in D. albiventris was studied in 3 regions of northeastern Brazil. No regional variation in the patterns studied could be observed. Growth in females was faster than in males up to adolescence (dental age class 5). The beginning of the breeding season seems to be related to rainfall patterns. There is no minimum size of females begin mating; age is the only criterion. Males are fertile all the year round. Ecological implications of the observed pattern are discussed.