Electric pulse characteristics can enable species recognition in African weakly electric fish species

Scientific Reports
Rebecca NagelRalph Tiedemann

Abstract

Communication is key to a wide variety of animal behaviours and multiple modalities are often involved in this exchange of information from sender to receiver. The communication of African weakly electric fish, however, is thought to be predominantly unimodal and is mediated by their electric sense, in which species-specific electric organ discharges (EODs) are generated in a context-dependent and thus variable sequence of pulse intervals (SPI). While the primary function of the electric sense is considered to be electrolocation, both of its components likely carry information regarding identity of the sender. However, a clear understanding of their contribution to species recognition is incomplete. We therefore analysed these two electrocommunication components (EOD waveform and SPI statistics) in two sympatric mormyrid Campylomormyrus species. In a set of five playback conditions, we further investigated which components may drive interspecific recognition and discrimination. While we found that both electrocommunication components are species-specific, the cues necessary for species recognition differ between the two species studied. While the EOD waveform and SPI were both necessary and sufficient for species recognition in...Continue Reading

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Citations

Feb 8, 2019·Journal of Fish Biology·William G R Crampton
Feb 9, 2020·The Journal of Experimental Biology·Jason R Gallant, Lauren A O'Connell
Mar 1, 2020·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Linh NguyenFrank Kirschbaum
Feb 5, 2022·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Yevheniia KorniienkoFrank Kirschbaum

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Methods Mentioned

BETA
PCA
PCAs

Software Mentioned

LifeCam
R add
R add - on package multcomp
ggbiplot
R
Spike2
MATLAB
R add - on package psych

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