Research Article

Complex sensory environments alter mate choice outcomes

Published: N/A

Journal: Journal of Experimental Biology

DOI: 10.1242/jeb.233288

Abstract

Noise is a common problem in animal communication. We know little, however, about how animals communicate in noise using multimodal signals. Multimodal signals are hypothesized to be favoured by evolution because they increase the efficacy of detection/discrimination in noisy environments. We tested the hypothesis that female túngara frogs’ responses to attractive male advertisement calls are improved in noise when a visual signal component is added to the available choices. We tested this at two levels of decision complexity (two and three choices). In a two-choice test, the presence of noise did not reduce female preferences for attractive calls. The visual component of a calling male, associated with an unattractive call, also did not reduce preference for attractive calls in the absence of noise. In the presence of noise, however, females were more likely to choose an unattractive call coupled with the visual component. In three-choice tests, the presence of noise alone reduced female responses to attractive calls and this was not strongly affected by the presence or absence of visual components. The responses in these experiments fail to support the multimodal signal efficacy hypothesis. Instead, the data suggest that audio-visual perception and cognitive processing, related to mate choice decisions, are dependent on the complexity of the sensory scene.

Faculty Members

  • Kimberly L. Hunter - Department of Biology, Salisbury University, Salisbury, MD 21801 USA
  • Michael J. Ryan - Department of Integrative Biology, University of Texas, Austin TX 78712 USASmithsonian Tropical Research Institute, Apartado 0843-03092 Balboa, Ancón, Republic of Panama
  • Ryan C. Taylor - Department of Biology, Salisbury University, Salisbury, MD 21801 USASmithsonian Tropical Research Institute, Apartado 0843-03092 Balboa, Ancón, Republic of Panama
  • Rosalind J. Ludovici - Department of Biology, Salisbury University, Salisbury, MD 21801 USA
  • Rachel A. Page - Smithsonian Tropical Research Institute, Apartado 0843-03092 Balboa, Ancón, Republic of Panama
  • Kelsey M. Mitchell - Department of Biology, Salisbury University, Salisbury, MD 21801 USA
  • Wouter Halfwerk - Department of Ecological Science, VU University, Amsterdam 1081 HV, The Netherlands
  • Kyle O. Wilhite - Department of Biology, Salisbury University, Salisbury, MD 21801 USADepartment of Integrative Biology, University of Texas, Austin TX 78712 USA

Themes

  • Sensory Processing
  • Multimodal Signals
  • Mate Choice Decisions
  • Animal Communication
  • Cognitive Processing

Categories

Download Article