Nov 23, 2010

Leopard frog priorities in choosing between prey at different locations

Behavioural Processes
Elizabeth DudkinE R Gruberg

Abstract

Frogs are able to respond to a prey stimulus throughout their 360° ground-level visual field as well as in the superior visual field. We compared the likelihood of frogs choosing between a more nasally located, ground-level prey versus a more temporally located ground-level prey, when the prey at the nasal location is further away from the frog. Two crickets were presented simultaneously at 9 pairs of angles that included both crickets in the binocular visual field, both crickets in the monocular visual field, or one cricket in the binocular field and one in the monocular field. Frogs chose the more nasally located prey at least 71% of the time when the more temporal prey was in the monocular field; and 64% of the time when both prey were in the binocular field. Frogs tended to choose the more nasally located prey, even though it takes the frog longer to reach the prey. In addition, when given a choice between a prey located at ground level versus a prey located in the superior field, frogs tend to choose the prey at ground-level. These results suggest that there is a neural mechanism that biases frogs' responses to prey stimuli.

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Mentioned in this Paper

Rana pipiens
Apis mellifera
Vision, Binocular
Snout Structure (Body Structure)
Gryllidae
Vision, Monocular
Visual Fields
Familiarity
Compound A 12
Ambidexterity

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