Bioacoustic distances between the begging calls of brood parasites and their host species: a comparison of metrics and techniques |
| |
Authors: | Louis Ranjard Michael G Anderson Matt J Rayner Robert B Payne Ian McLean James V Briskie Howard A Ross Dianne H Brunton Sarah M N Woolley Mark E Hauber |
| |
Institution: | (1) Bioinformatics Institute, School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland Mail Centre, Auckland, 1142, New Zealand;(2) Ecology and Conservation Group, Institute of Natural Sciences, Massey University, Albany Campus, Private Bag 102-904, North Shore Mail Centre, Auckland, New Zealand;(3) School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand;(4) Present address: National Institute of Water and Atmospheric Research Ltd. (NIWA), P.O. Box 99940, Newmarket, 1149, New Zealand;(5) University of Michigan, 1306 Granger Avenue, Ann Arbor, MI 48109, USA;(6) Department of Zoology, Otago University, P.O.Box 56 Dunedin, New Zealand;(7) School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand;(8) Department of Psychology, Columbia University, 406 Schermerhorn Hall, 1190 Amsterdam Ave, New York, NY 10027, USA;(9) Department of Psychology, Hunter College, City University of New York, 695 Park Avenue, New York, NY 10065, USA |
| |
Abstract: | A variety of bioacoustics distance metrics have been used to assess similarities in the vocalizations of different individuals.
Here, we provide a detailed analysis of several acoustic similarity indices, some of which have been developed with the specific
aim of characterizing the sensory coding of auditory stimuli. We compare different approaches through the analysis of begging
calls of several passerine species and specialist brood parasitic cuckoos that putatively evolved to mimic their hosts. The
different bioacoustics distances did not provide consistently correlated similarity patterns, implying that they are sensitive
to different sound features. However, the encoded spectrogram alignment method was correlated with all other acoustic distance
metrics, suggesting that this method provides a consistent approach to use when the perceptually salient sound parameters
are unknown for a particular species. Our analyses confirm that statistical similarity of begging calls can be detected in
a New Zealand pair of host and specialist parasite species. We also show detectable similarity in two other Australasian host–parasite
pairs and another New Zealand system, but to a more limited extent. By examining phylogenetic patterns in the begging call
diversity, we also confirm that specialist cuckoos have evolved to mimic the begging calls of their hosts but host species
have not co-evolved to modify their calls in response to begging call similarity by the parasite. Our results illustrate that
understanding the function and mechanism of behavioral copying and mimicry requires statistically consistent measures of similarity
that are related to both the physical aspects of the particular display and the sensory basis of its perception. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|