Food imprinting and subsequent prey preference in the lynx spider, Oxyopes salticus (Araneae: Oxyopidae)

This object of this study was to determine if early feeding experience can affect subsequent prey choice in lynx spiderlings (Oxyopes salticus), and if so, is it evidence for food/olfactory imprinting. After emergence from the egg sac, three groups of 10 spiderlings were each fed exclusively for a 1-week period on one of three naturally-occurring prey species (crickets): group I fed on nymphs of Gryllotalpa hexadactyla group 2 (Dialeurodes citrifoli). group 3 (Microcentrum rhombifolium). Following this, they were tested for subsequent prey preference in choice tests conducted in a plastic arena. Each spiderling was presented simultaneously with one individual of each prey species in a randomized design. Spiderlings exhibited a significant first preference for the original diet. Thus. experience with certain foods encountered by newly hatched spiderlings can affect subsequent prey preference in this species. Given the primacy of the early experience. the results are best interpreted in terms of imprinting and represent the first demonstration of olfactory imprinting in a spider. (C) 2002 Elsevier Science B.V. All rights reserved.