Auditory predator cues decrease herbivore survival and plant damage.

Autor: Lee ZA; Department of Biological Sciences, University of Rhode Island, Kingston, Rhode Island, USA., Cohen CB; Department of Biological Sciences, University of Rhode Island, Kingston, Rhode Island, USA., Baranowski AK; Department of Biological Sciences, University of Rhode Island, Kingston, Rhode Island, USA.; Graduate Degree Program in Ecology, Colorado State University, Ft. Collins, Colorado, USA., Berry KN; Department of Biological Sciences, University of Rhode Island, Kingston, Rhode Island, USA., McGuire MR; Department of Biological Sciences, University of Rhode Island, Kingston, Rhode Island, USA., Pelletier TS; Department of Biological Sciences, University of Rhode Island, Kingston, Rhode Island, USA.; Nicholas School of the Environment, Duke University, Durham, North Carolina, USA., Peck BP; Department of Biological Sciences, University of Rhode Island, Kingston, Rhode Island, USA., Blundell JJ; Department of Psychology, Memorial University of Newfoundland, St. John's, NL, Canada., Preisser EL; Department of Biological Sciences, University of Rhode Island, Kingston, Rhode Island, USA.
Jazyk: angličtina
Zdroj: Ecology [Ecology] 2023 Apr; Vol. 104 (4), pp. e4007. Date of Electronic Publication: 2023 Feb 28.
DOI: 10.1002/ecy.4007
Abstrakt: The high fitness cost of predation selects prey capable of detecting risk cues and responding in ways that reduce their vulnerability. While the impacts of auditory predator cues have been extensively researched in vertebrate prey, much less is known about invertebrate species' responses and their potential to affect the wider food web. We exposed larvae of Spodoptera exigua, a slow-moving and vulnerable herbivore hunted by aerial predators, to recordings of wasp buzzing (risk cue), mosquito buzzing (no-risk cue), or a no-sound control in both laboratory and field settings. In the laboratory, wasp buzzing (but not mosquito buzzing) reduced survival relative to the control; there was, however, no effect on time to or weight at pupation in survivors. In the field, wasp buzzing reduced caterpillar herbivory and increased plant biomass relative to the control treatment. In contrast, mosquito buzzing reduced herbivory less than wasp buzzing and had no effect on plant biomass. The fact that wasp cues evoked strong responses in both experiments, while mosquito buzzing generally did not, indicates that caterpillars were responding to predation risk rather than sound per se. Such auditory cues may have an important but largely unappreciated impacts on terrestrial invertebrate herbivores and their host plants.
(© 2023 The Ecological Society of America.)
Databáze: MEDLINE
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