WildCallithrix groups: Stable extended families?

Abstract

Data from field studies of three Callithrix species, C. flaviceps, C. intermedia, and C. jacchus, are considered in an attempt to characterize group dynamics in this genus. The three groups considered in detail contrast significantly in many behavioral (mating system, ranging behavior, activity patterns) and ecological (zoogeography, habitat, diet) variables. Despite this, all three groups are highly similar in a number of characteristics, including relatively large size, high reproductive output, and low rates of migration. The evidence suggests that Callithrix groups may frequently encompass three generations and are characterized by a high degree of both stability and relatedness between group members. © 1996 Wiley-Liss, Inc.