期刊
ANIMAL COGNITION
卷 19, 期 6, 页码 1173-1181出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s10071-016-1025-y
关键词
Lycosidae; Multimodal communication; Mate choice; Vibratory/seismic signals; Visual signals; Ventriloquism effect; Spatio-temporal synchrony
资金
- National Science Foundation [IOS-1026995]
- UC Biological Sciences Wieman/Wendell/Benedict Student Research Fund
- Direct For Biological Sciences
- Division Of Integrative Organismal Systems [1026995] Funding Source: National Science Foundation
Cross-modal integration, i.e., cognitive binding of information transmitted in more than one signal mode, is important in animal communication, especially in complex, noisy environments in which signals of many individuals may overlap. Males of the brush-legged wolf spider Schizocosa ocreata (Hentz) use multimodal communication (visual and vibratory signals) in courtship. Because females may be courted by multiple males at the same time, they must evaluate co-occurring male signals originating from separate locations. Moreover, due to environmental complexity, individual components of male signals may be occluded, altering detection of sensory modes by females. We used digital multimodal playback to investigate the effect of spatial and temporal disparity of visual and vibratory components of male courtship signals on female mate choice. Females were presented with male courtship signals with components that varied in spatial location or temporal synchrony. Females responded to spatially disparate signal components separated by aeyen90A degrees as though they were separate sources, but responded to disparate signals separated by aecurrency sign45A degrees as though they originated from a single source. Responses were seen as evidence for cross-modal integration. Temporal disparity (asynchrony) in signal modes also affected female receptivity. Females responded more to male signals when visual and vibratory modes were in synchrony than either out-of-synch or interleaved/alternated. These findings are consistent with those seen in both humans and other vertebrates and provide insight into how animals overcome communication challenges inherent in a complex environment.
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