Data from: Cultural turnover among Galápagos sperm whales
While populations may wax and wane, it is rare for an entire population to be replaced by a completely different set of individuals. We document the large-scale relocation of cultural groups of sperm whale off the Galápagos Islands, in which two sympatric vocal clans were entirely replaced by two di...
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ftzenodo:oai:zenodo.org:5016564 2023-05-15T18:26:38+02:00 Data from: Cultural turnover among Galápagos sperm whales Cantor, Mauricio Whitehead, Hal Gero, Shane Rendell, Luke 2016-09-12 https://zenodo.org/record/5016564 https://doi.org/10.5061/dryad.8jj26 unknown doi:10.1098/rsos.160615 https://zenodo.org/communities/dryad https://zenodo.org/record/5016564 https://doi.org/10.5061/dryad.8jj26 oai:zenodo.org:5016564 info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode Social structure 1985-2014 dialect Physter macrocephalus Culture demographic change population turnover Cetacea Population Ecology sperm whale info:eu-repo/semantics/other dataset 2016 ftzenodo https://doi.org/10.5061/dryad.8jj2610.1098/rsos.160615 2023-03-10T18:53:39Z While populations may wax and wane, it is rare for an entire population to be replaced by a completely different set of individuals. We document the large-scale relocation of cultural groups of sperm whale off the Galápagos Islands, in which two sympatric vocal clans were entirely replaced by two different ones. Between 1985 and 1999, whales from two clans (called Regular and Plus-One) defined by cultural dialects in coda vocalizations were repeatedly photo-identified off Galápagos. Their occurrence in the area declined through the 1990s; by 2000, none remained. We reassessed Galápagos sperm whales in 2013–2014, identifying 463 new females. However, re-sighting rates were low, with no matches with the Galápagos 1985–1999 population, suggesting an eastward shift to coastal areas. Their vocal repertoires matched those of two other clans (called Short and Four-Plus) found across the Pacific but previously rare or absent around Galápagos. The mechanisms behind this cultural turnover may include large-scale environmental regime shifts favouring clan-specific foraging strategies, and a response to heavy whaling in the region involving redistribution of surviving whales into high-quality habitats. The fall and rise of sperm whale cultures off Galápagos reflect the structuring of the Pacific population into large, enduring clans with dynamic ranges. Long-lasting clan membership illustrates how culture can be bound up in the structure and dynamics of animal populations and so how tracking cultural traits can reveal large-scale population shifts. Cantor_etal_Fig2_EncouterRatesData for plot in Figure 2 (30-by-3 matrix). Column 1 = Year; Column 2 = Encounter rates of sperm whales off the Galapagos Islands (calculated as number of groups of female and immature whales encountered divided by the total hours of acoustic and visual search (i.e. total effort minus time following whales)); Column 3 = Standard Error of the Mean for encounter rates (calculated as [Squareroot(number of encounters)/total hours of sampling effort], ... Dataset Sperm whale Zenodo Galapagos Pacific |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Social structure 1985-2014 dialect Physter macrocephalus Culture demographic change population turnover Cetacea Population Ecology sperm whale |
spellingShingle |
Social structure 1985-2014 dialect Physter macrocephalus Culture demographic change population turnover Cetacea Population Ecology sperm whale Cantor, Mauricio Whitehead, Hal Gero, Shane Rendell, Luke Data from: Cultural turnover among Galápagos sperm whales |
topic_facet |
Social structure 1985-2014 dialect Physter macrocephalus Culture demographic change population turnover Cetacea Population Ecology sperm whale |
description |
While populations may wax and wane, it is rare for an entire population to be replaced by a completely different set of individuals. We document the large-scale relocation of cultural groups of sperm whale off the Galápagos Islands, in which two sympatric vocal clans were entirely replaced by two different ones. Between 1985 and 1999, whales from two clans (called Regular and Plus-One) defined by cultural dialects in coda vocalizations were repeatedly photo-identified off Galápagos. Their occurrence in the area declined through the 1990s; by 2000, none remained. We reassessed Galápagos sperm whales in 2013–2014, identifying 463 new females. However, re-sighting rates were low, with no matches with the Galápagos 1985–1999 population, suggesting an eastward shift to coastal areas. Their vocal repertoires matched those of two other clans (called Short and Four-Plus) found across the Pacific but previously rare or absent around Galápagos. The mechanisms behind this cultural turnover may include large-scale environmental regime shifts favouring clan-specific foraging strategies, and a response to heavy whaling in the region involving redistribution of surviving whales into high-quality habitats. The fall and rise of sperm whale cultures off Galápagos reflect the structuring of the Pacific population into large, enduring clans with dynamic ranges. Long-lasting clan membership illustrates how culture can be bound up in the structure and dynamics of animal populations and so how tracking cultural traits can reveal large-scale population shifts. Cantor_etal_Fig2_EncouterRatesData for plot in Figure 2 (30-by-3 matrix). Column 1 = Year; Column 2 = Encounter rates of sperm whales off the Galapagos Islands (calculated as number of groups of female and immature whales encountered divided by the total hours of acoustic and visual search (i.e. total effort minus time following whales)); Column 3 = Standard Error of the Mean for encounter rates (calculated as [Squareroot(number of encounters)/total hours of sampling effort], ... |
format |
Dataset |
author |
Cantor, Mauricio Whitehead, Hal Gero, Shane Rendell, Luke |
author_facet |
Cantor, Mauricio Whitehead, Hal Gero, Shane Rendell, Luke |
author_sort |
Cantor, Mauricio |
title |
Data from: Cultural turnover among Galápagos sperm whales |
title_short |
Data from: Cultural turnover among Galápagos sperm whales |
title_full |
Data from: Cultural turnover among Galápagos sperm whales |
title_fullStr |
Data from: Cultural turnover among Galápagos sperm whales |
title_full_unstemmed |
Data from: Cultural turnover among Galápagos sperm whales |
title_sort |
data from: cultural turnover among galápagos sperm whales |
publishDate |
2016 |
url |
https://zenodo.org/record/5016564 https://doi.org/10.5061/dryad.8jj26 |
geographic |
Galapagos Pacific |
geographic_facet |
Galapagos Pacific |
genre |
Sperm whale |
genre_facet |
Sperm whale |
op_relation |
doi:10.1098/rsos.160615 https://zenodo.org/communities/dryad https://zenodo.org/record/5016564 https://doi.org/10.5061/dryad.8jj26 oai:zenodo.org:5016564 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.8jj2610.1098/rsos.160615 |
_version_ |
1766208611197911040 |