Brouwer, Lyanne; Heg, Dik; Taborsky, Michael - In: Behavioral Ecology 16 (2005) 3, pp. 667-673
Neolamprologus pulcher is a cooperatively breeding cichlid fish, in which helpers stay in their natal territory and help with brood care, territory defense, and maintenance. In this study we investigated helper effects by an experimental group size reduction in the field. After this...