Title:

Influence of prey encounter and prey identity on area-restricted searching in the lizard Pedioplanis namaquensis

Publication Year:
2012
Abstract:

We experimentally determined that the lizard Pedioplanis namaquensis engages in area-restricted searching (=ARS, localized searching after encounters with food) while foraging and that prey characteristics influence ARS. Single prey items were introduced to free-ranging lizards, and their subsequent search effort was characterized using first passage times (=FPT, time required for an animal to cross a circle of a given radius). Three prey types were used: termites, flies, and rice (control). FPTs were longer following termite encounters than following fly or control encounters. Control treatments produced no change in FPT, while lizards searching for termites showed the greatest change. The use by Pedioplanis namaquensis of ARS was most pronounced for the typically aggregated prey type. Keywords: Area-restricted search, first passage time, foraging, lizard, prey distribution.

Publication Title:
Journal of Ethology
Volume:
30
Pages:
197-200
Item Type:
Journal Article
Language:
en
Keywords: