Vocal individuality of in-air Weddell seal (Leptonychotes weddellii) pup 'primary' calls
As a result of selective pressures faced during lactation, vocal recognition may play a crucial role in maintaining the phocid mother–pup bond during the period of dependence. To investigate this possibility, we examined whether Weddell seal (Leptonychotes weddellii) pups produce individually distin...
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ftdeakinunifig:oai:figshare.com:article/21001114 2023-05-15T17:10:36+02:00 Vocal individuality of in-air Weddell seal (Leptonychotes weddellii) pup 'primary' calls K Collins J Terhune T Rogers K Wheatley R Harcourt 2006-07-01T00:00:00Z http://hdl.handle.net/10536/DRO/DU:30039826 https://figshare.com/articles/journal_contribution/Vocal_individuality_of_in-air_Weddell_seal_Leptonychotes_weddellii_pup_primary_calls/21001114 unknown http://hdl.handle.net/10536/DRO/DU:30039826 https://figshare.com/articles/journal_contribution/Vocal_individuality_of_in-air_Weddell_seal_Leptonychotes_weddellii_pup_primary_calls/21001114 All Rights Reserved Evolutionary Biology Ecology Zoology vocal individuality Leptonychotes weddellii Weddell seal pup calls Text Journal contribution 2006 ftdeakinunifig 2022-11-17T22:19:53Z As a result of selective pressures faced during lactation, vocal recognition may play a crucial role in maintaining the phocid mother–pup bond during the period of dependence. To investigate this possibility, we examined whether Weddell seal (Leptonychotes weddellii) pups produce individually distinctive “primary” calls. One temporal, nine fundamental frequency features, and two spectral characteristics were measured. A discriminant function analysis (DFA) of 15 Vestfold Hills pups correctly classified 52% of calls, while the cross-validation procedure classified 29% of calls to the correct pup. A second DFA of 10 known-age McMurdo Sound pups correctly classified 44% of “test” calls. For novel calls, the probabilities of attaining such classification rates by chance are low. The relationship between age and call stereotypy indicated that pups 2 wk and older may be more vocally distinctive. Overall, findings suggest that Weddell seal pup “primary” calls are moderately distinctive and only exhibit sufficient stereotypy to aid maternal recognition by approximately two weeks of age. Other Non-Article Part of Journal/Newspaper McMurdo Sound Weddell Seal DRO - Deakin Research Online Vestfold Hills McMurdo Sound Weddell Vestfold |
institution |
Open Polar |
collection |
DRO - Deakin Research Online |
op_collection_id |
ftdeakinunifig |
language |
unknown |
topic |
Evolutionary Biology Ecology Zoology vocal individuality Leptonychotes weddellii Weddell seal pup calls |
spellingShingle |
Evolutionary Biology Ecology Zoology vocal individuality Leptonychotes weddellii Weddell seal pup calls K Collins J Terhune T Rogers K Wheatley R Harcourt Vocal individuality of in-air Weddell seal (Leptonychotes weddellii) pup 'primary' calls |
topic_facet |
Evolutionary Biology Ecology Zoology vocal individuality Leptonychotes weddellii Weddell seal pup calls |
description |
As a result of selective pressures faced during lactation, vocal recognition may play a crucial role in maintaining the phocid mother–pup bond during the period of dependence. To investigate this possibility, we examined whether Weddell seal (Leptonychotes weddellii) pups produce individually distinctive “primary” calls. One temporal, nine fundamental frequency features, and two spectral characteristics were measured. A discriminant function analysis (DFA) of 15 Vestfold Hills pups correctly classified 52% of calls, while the cross-validation procedure classified 29% of calls to the correct pup. A second DFA of 10 known-age McMurdo Sound pups correctly classified 44% of “test” calls. For novel calls, the probabilities of attaining such classification rates by chance are low. The relationship between age and call stereotypy indicated that pups 2 wk and older may be more vocally distinctive. Overall, findings suggest that Weddell seal pup “primary” calls are moderately distinctive and only exhibit sufficient stereotypy to aid maternal recognition by approximately two weeks of age. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
K Collins J Terhune T Rogers K Wheatley R Harcourt |
author_facet |
K Collins J Terhune T Rogers K Wheatley R Harcourt |
author_sort |
K Collins |
title |
Vocal individuality of in-air Weddell seal (Leptonychotes weddellii) pup 'primary' calls |
title_short |
Vocal individuality of in-air Weddell seal (Leptonychotes weddellii) pup 'primary' calls |
title_full |
Vocal individuality of in-air Weddell seal (Leptonychotes weddellii) pup 'primary' calls |
title_fullStr |
Vocal individuality of in-air Weddell seal (Leptonychotes weddellii) pup 'primary' calls |
title_full_unstemmed |
Vocal individuality of in-air Weddell seal (Leptonychotes weddellii) pup 'primary' calls |
title_sort |
vocal individuality of in-air weddell seal (leptonychotes weddellii) pup 'primary' calls |
publishDate |
2006 |
url |
http://hdl.handle.net/10536/DRO/DU:30039826 https://figshare.com/articles/journal_contribution/Vocal_individuality_of_in-air_Weddell_seal_Leptonychotes_weddellii_pup_primary_calls/21001114 |
geographic |
Vestfold Hills McMurdo Sound Weddell Vestfold |
geographic_facet |
Vestfold Hills McMurdo Sound Weddell Vestfold |
genre |
McMurdo Sound Weddell Seal |
genre_facet |
McMurdo Sound Weddell Seal |
op_relation |
http://hdl.handle.net/10536/DRO/DU:30039826 https://figshare.com/articles/journal_contribution/Vocal_individuality_of_in-air_Weddell_seal_Leptonychotes_weddellii_pup_primary_calls/21001114 |
op_rights |
All Rights Reserved |
_version_ |
1766067234374942720 |