aIn the most common models of communication, it is assumed that animals provide reliable information about phenotype, and hence can settle competitive contests without physical interactions like fights. This assumption has rarely been tested for wild mammals. Recent studies of mammals have revealed...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.606.8454 2023-05-15T16:05:09+02:00 The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.606.8454 http://www.mun.ca/biology/tmiller/pdffiles/SANVITO_3564.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.606.8454 http://www.mun.ca/biology/tmiller/pdffiles/SANVITO_3564.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.mun.ca/biology/tmiller/pdffiles/SANVITO_3564.pdf animal communication bioacoustics elephant seal Mirounga leonina Phocidae sexual selection vocalization text ftciteseerx 2016-01-08T14:17:58Z aIn the most common models of communication, it is assumed that animals provide reliable information about phenotype, and hence can settle competitive contests without physical interactions like fights. This assumption has rarely been tested for wild mammals. Recent studies of mammals have revealed relation-ships of vocal attributes to age and body size. Here, we analyse relationships of frequency attributes of ag-onistic vocalizations to phenotype (age, body size, proboscis size and agonistic behaviour) in males of the southern elephant seal, Mirounga leonina, a species with intense male competition for access to females, and in which vocalizations are used frequently to settle maleemale contests. We analysed formant struc-ture and vocal tract size, and found that nasal and oral components of the vocal tract contribute separately to vocal formants; hence, the male’s proboscis serves to elongate the vocal tract. We also found that for-mants in the upper part of the frequency spectrum (fourth and fifth in particular) and formant dispersion convey significant information about age, size and resource holding potential at large, and, therefore, can be honest signals of a vocalizer’s phenotype. Explained variance was statistically significant in our study and in similar studies but was not high, so formant structure cannot serve as the sole basis of acoustic as-sessment. Other possible sources of information exchanged in elephant seal contests are nonvocal acoustic signals (e.g. vibrations) and optical displays. Text Elephant Seal Mirounga leonina Southern Elephant Seal Unknown |
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English |
topic |
animal communication bioacoustics elephant seal Mirounga leonina Phocidae sexual selection vocalization |
spellingShingle |
animal communication bioacoustics elephant seal Mirounga leonina Phocidae sexual selection vocalization |
topic_facet |
animal communication bioacoustics elephant seal Mirounga leonina Phocidae sexual selection vocalization |
description |
aIn the most common models of communication, it is assumed that animals provide reliable information about phenotype, and hence can settle competitive contests without physical interactions like fights. This assumption has rarely been tested for wild mammals. Recent studies of mammals have revealed relation-ships of vocal attributes to age and body size. Here, we analyse relationships of frequency attributes of ag-onistic vocalizations to phenotype (age, body size, proboscis size and agonistic behaviour) in males of the southern elephant seal, Mirounga leonina, a species with intense male competition for access to females, and in which vocalizations are used frequently to settle maleemale contests. We analysed formant struc-ture and vocal tract size, and found that nasal and oral components of the vocal tract contribute separately to vocal formants; hence, the male’s proboscis serves to elongate the vocal tract. We also found that for-mants in the upper part of the frequency spectrum (fourth and fifth in particular) and formant dispersion convey significant information about age, size and resource holding potential at large, and, therefore, can be honest signals of a vocalizer’s phenotype. Explained variance was statistically significant in our study and in similar studies but was not high, so formant structure cannot serve as the sole basis of acoustic as-sessment. Other possible sources of information exchanged in elephant seal contests are nonvocal acoustic signals (e.g. vibrations) and optical displays. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.606.8454 http://www.mun.ca/biology/tmiller/pdffiles/SANVITO_3564.pdf |
genre |
Elephant Seal Mirounga leonina Southern Elephant Seal |
genre_facet |
Elephant Seal Mirounga leonina Southern Elephant Seal |
op_source |
http://www.mun.ca/biology/tmiller/pdffiles/SANVITO_3564.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.606.8454 http://www.mun.ca/biology/tmiller/pdffiles/SANVITO_3564.pdf |
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1766400950714499072 |