Effects of Food Availability on Aggression and Nest Building in Brook Stickleback (Culaea inconstans)

Abstract

Male brook stickleback (Culaea inconstans) that were fed 50 brine shrimp per day built nests under conditions that prevented nest building in fish fed 10 or 30 brine shrimp per day. Groups of fish fed 50 brine shrimp per day or with live food present continuously were more aggressive and territorial than the same fish when unfed.