Chemical recognition in a snake-lizard predator-prey system
Author
dc.contributor.author
Labra Lillo, María Antonieta
Author
dc.contributor.author
Hoare, Misque
Admission date
dc.date.accessioned
2015-08-13T19:16:54Z
Available date
dc.date.available
2015-08-13T19:16:54Z
Publication date
dc.date.issued
2015
Cita de ítem
dc.identifier.citation
Acta Ethol (2015) 18:173–179
en_US
Identifier
dc.identifier.other
DOI 10.1007/s10211-014-0203-7
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/132713
General note
dc.description
Artículo de publicación ISI
en_US
Abstract
dc.description.abstract
In a predator-prey interaction, the fitnesses of the predator and the prey depend on their abilities to recognize each other, a process that may involve different sensory modalities. Squamate reptiles are highly dependent on chemical senses for such recognition, and here we explored the ability of a generalist saurophagous snake, Philodryas chamissonis, to discriminate scents of two congeneric and sympatric lizard prey species, Liolaemus nitidus and L. chiliensis. A generalist saurophagous snake might just be sensitive to lizard scents in general, and if so, no discrimination between prey species is expected. However, these lizards use different substrates; L. nitidus basks on rocks, whereas L. chiliensis mainly basks on bushes and rarely on ground. The snake P. chamissonis basks on ground and rocks, and rarely on bushes. Therefore, if the rate of encounter affects the ability to recognize prey, we predict that P. chamissonis would show prey discrimination because scents of L. chiliensis may be encountered less frequently in its habitat. Results showed that the snake had a refined discrimination of lizard prey, reducing tongue flick rate and movements in response to scents from the common prey scents, L. nitidus. We also studied the ability of L. chiliensis to detect the snake and found that snake scents triggered a reduction in activity. The potential infrequent encounter between predator and prey may explain the asymmetric predator-prey recognition, as can be predicted from the "life-dinner" principle.