The effects of colonization, extinction and competition on co-existence in metacommunities.

1. The co-existence of competitors in heterogeneous landscapes depends on the processes of colonization, extinction and spatial scale. In this study, we explore the metapopulation dynamics of competitive interactions.

Non-associative learning in larval zebrafish.

Habituation, where a response is reduced when exposed to a continuous stimulus is one of the simplest forms of non-associative learning and has been shown in a number of organisms from sea slugs to rodents. However, very little has been reported in the zebrafish, a model that is gaining popularity for high-throughput compound screens. Furthermore, since most of the studies involving learning and memory in zebrafish have been conducted in adults, we sought to determine if zebrafish larvae could display non-associative learning and whether it could be modulated by compounds identified in previous rodent studies.