Supplementary material from "The rise and fall of dialects in northern elephant seals"
Vocal dialects are fundamental to our understanding of the transmission of social behaviours between individuals and populations, however few accounts trace this phenomenon among mammals over time. Northern elephant seals ( Mirounga angustirostris ) provide a rare opportunity to examine the trajecto...
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ftdatacite:10.6084/m9.figshare.c.4302743 2023-05-15T16:05:38+02:00 Supplementary material from "The rise and fall of dialects in northern elephant seals" Casey, Caroline Reichmuth, Colleen Costa, Daniel P. Burney Le Boeuf 2018 https://dx.doi.org/10.6084/m9.figshare.c.4302743 https://figshare.com/collections/Supplementary_material_from_The_rise_and_fall_of_dialects_in_northern_elephant_seals_/4302743 unknown Figshare https://dx.doi.org/10.1098/rspb.2018.2176 CC BY 4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Evolutionary Biology FOS Biological sciences 60801 Animal Behaviour Collection article 2018 ftdatacite https://doi.org/10.6084/m9.figshare.c.4302743 https://doi.org/10.1098/rspb.2018.2176 2021-11-05T12:55:41Z Vocal dialects are fundamental to our understanding of the transmission of social behaviours between individuals and populations, however few accounts trace this phenomenon among mammals over time. Northern elephant seals ( Mirounga angustirostris ) provide a rare opportunity to examine the trajectory of dialects in a long-lived mammalian species. Dialects were first documented in the temporal patterns of the stereotyped vocal displays produced by breeding males at four sites in the North Pacific in 1968 and 1969, as the population recovered from extreme exploitation. We evaluated the longevity of these geographical differences by comparing these early recordings to calls recently recorded at these same locations. While the presence of vocal dialects in the original recordings was re-confirmed, geographical differences in vocal behaviour were not found at these breeding rookeries nearly 50 years later. Moreover, the calls of contemporary males displayed more structural complexity after approximately four generations, with substantial between-individual variation and call features not present in the historical data. In the absence of measurable genetic variation in this species—due to an extreme population bottleneck—a combination of migration patterns and cultural mutation are proposed as factors influencing the fall of dialects and the dramatic increase in call diversity. Article in Journal/Newspaper Elephant Seals DataCite Metadata Store (German National Library of Science and Technology) Pacific |
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collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
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language |
unknown |
topic |
Evolutionary Biology FOS Biological sciences 60801 Animal Behaviour |
spellingShingle |
Evolutionary Biology FOS Biological sciences 60801 Animal Behaviour Casey, Caroline Reichmuth, Colleen Costa, Daniel P. Burney Le Boeuf Supplementary material from "The rise and fall of dialects in northern elephant seals" |
topic_facet |
Evolutionary Biology FOS Biological sciences 60801 Animal Behaviour |
description |
Vocal dialects are fundamental to our understanding of the transmission of social behaviours between individuals and populations, however few accounts trace this phenomenon among mammals over time. Northern elephant seals ( Mirounga angustirostris ) provide a rare opportunity to examine the trajectory of dialects in a long-lived mammalian species. Dialects were first documented in the temporal patterns of the stereotyped vocal displays produced by breeding males at four sites in the North Pacific in 1968 and 1969, as the population recovered from extreme exploitation. We evaluated the longevity of these geographical differences by comparing these early recordings to calls recently recorded at these same locations. While the presence of vocal dialects in the original recordings was re-confirmed, geographical differences in vocal behaviour were not found at these breeding rookeries nearly 50 years later. Moreover, the calls of contemporary males displayed more structural complexity after approximately four generations, with substantial between-individual variation and call features not present in the historical data. In the absence of measurable genetic variation in this species—due to an extreme population bottleneck—a combination of migration patterns and cultural mutation are proposed as factors influencing the fall of dialects and the dramatic increase in call diversity. |
format |
Article in Journal/Newspaper |
author |
Casey, Caroline Reichmuth, Colleen Costa, Daniel P. Burney Le Boeuf |
author_facet |
Casey, Caroline Reichmuth, Colleen Costa, Daniel P. Burney Le Boeuf |
author_sort |
Casey, Caroline |
title |
Supplementary material from "The rise and fall of dialects in northern elephant seals" |
title_short |
Supplementary material from "The rise and fall of dialects in northern elephant seals" |
title_full |
Supplementary material from "The rise and fall of dialects in northern elephant seals" |
title_fullStr |
Supplementary material from "The rise and fall of dialects in northern elephant seals" |
title_full_unstemmed |
Supplementary material from "The rise and fall of dialects in northern elephant seals" |
title_sort |
supplementary material from "the rise and fall of dialects in northern elephant seals" |
publisher |
Figshare |
publishDate |
2018 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.4302743 https://figshare.com/collections/Supplementary_material_from_The_rise_and_fall_of_dialects_in_northern_elephant_seals_/4302743 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Elephant Seals |
genre_facet |
Elephant Seals |
op_relation |
https://dx.doi.org/10.1098/rspb.2018.2176 |
op_rights |
CC BY 4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.4302743 https://doi.org/10.1098/rspb.2018.2176 |
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1766401538339635200 |