Using a multi-disciplinary approach to identify a critically endangered killer whale management unit
A key goal for wildlife managers is identifying discrete, demographically independent conservation units. Previous genetic work assigned killer whales that occur seasonally in the Strait of Gibraltar (SoG) and killer whales sampled off the Canary Islands (CI) to the same population. Here we present...
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Online Access: | http://hdl.handle.net/10261/196442 https://doi.org/10.1016/j.ecolind.2016.01.043 https://doi.org/10.13039/501100003329 |
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ftcsic:oai:digital.csic.es:10261/196442 2024-02-11T10:05:31+01:00 Using a multi-disciplinary approach to identify a critically endangered killer whale management unit Esteban, Ruth Verborgh, Philippe Gauffier, Pauline Giménez, Joan Martín, Vidal Pérez-Gil, Mónica Tejedor, Marisa Almunia, Javier Jepson, Paul D. García-Tiscar, Susana Barrett-Lennard, Lance G. Guinet, Christophe Foote, Andrew D. de Stephanis, Renaud SEO/BirdLife Ministerio de Economía y Competitividad (España) Loro Parque Fundación CEPSA Ministerio de Medio Ambiente (España) Fundación Biodiversidad University of British Columbia 2016-07 http://hdl.handle.net/10261/196442 https://doi.org/10.1016/j.ecolind.2016.01.043 https://doi.org/10.13039/501100003329 unknown Elsevier https://doi.org/10.1016/j.ecolind.2016.01.043 Sí Ecological Indicators 66: 291-300 (2016) 1470-160X http://hdl.handle.net/10261/196442 doi:10.1016/j.ecolind.2016.01.043 http://dx.doi.org/10.13039/501100003329 none Stable isotopes Social structure Genetics Pollutants Conservation artículo http://purl.org/coar/resource_type/c_6501 2016 ftcsic https://doi.org/10.1016/j.ecolind.2016.01.04310.13039/501100003329 2024-01-16T10:46:26Z A key goal for wildlife managers is identifying discrete, demographically independent conservation units. Previous genetic work assigned killer whales that occur seasonally in the Strait of Gibraltar (SoG) and killer whales sampled off the Canary Islands (CI) to the same population. Here we present new analyses of photo-identification and individual genotypes to assess the level of contemporary gene flow and migration between study areas, and analyses of biomarkers to assess ecological differences. We identified 47 different individuals from 5 pods in the SoG and 16 individuals in the CI, with no matches found between the areas. Mitochondrial DNA control region haplotype was shared by all individuals sampled within each pod, suggesting that pods have a matrifocal social structure typical of this species, whilst the lack of shared mitogenome haplotypes between the CI and SoG individuals suggests that there was little or no female migration between groups. Kinship analysis detected no close kin between CI and SoG individuals, and low to zero contemporary gene flow. Isotopic values and organochlorine pollutant loads also suggest ecological differences between study areas. We further found that one individual from a pod within the SoG not seen in association with the other four pods and identified as belonging to a potential migrant lineage by genetic analyses, had intermediate isotopic values and contaminant between the two study areas. Overall our results suggest a complex pattern of social and genetic structuring correlated with ecological variation. Consequently at least CI and SoG should be considered as two different management units. Understanding this complexity appears to be an important consideration when monitoring and understanding the viability of these management units. Understand the viability will help the conservation of these threatened management units. This work was funded by Loro Parque Foundation, CEPSA, Ministerio de Medio Ambiente, Fundación Biodiversidad, LIFE+ Indemares ... Article in Journal/Newspaper Killer Whale Killer whale Digital.CSIC (Spanish National Research Council) Sog ENVELOPE(-20.972,-20.972,63.993,63.993) Ecological Indicators 66 291 300 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
topic |
Stable isotopes Social structure Genetics Pollutants Conservation |
spellingShingle |
Stable isotopes Social structure Genetics Pollutants Conservation Esteban, Ruth Verborgh, Philippe Gauffier, Pauline Giménez, Joan Martín, Vidal Pérez-Gil, Mónica Tejedor, Marisa Almunia, Javier Jepson, Paul D. García-Tiscar, Susana Barrett-Lennard, Lance G. Guinet, Christophe Foote, Andrew D. de Stephanis, Renaud Using a multi-disciplinary approach to identify a critically endangered killer whale management unit |
topic_facet |
Stable isotopes Social structure Genetics Pollutants Conservation |
description |
A key goal for wildlife managers is identifying discrete, demographically independent conservation units. Previous genetic work assigned killer whales that occur seasonally in the Strait of Gibraltar (SoG) and killer whales sampled off the Canary Islands (CI) to the same population. Here we present new analyses of photo-identification and individual genotypes to assess the level of contemporary gene flow and migration between study areas, and analyses of biomarkers to assess ecological differences. We identified 47 different individuals from 5 pods in the SoG and 16 individuals in the CI, with no matches found between the areas. Mitochondrial DNA control region haplotype was shared by all individuals sampled within each pod, suggesting that pods have a matrifocal social structure typical of this species, whilst the lack of shared mitogenome haplotypes between the CI and SoG individuals suggests that there was little or no female migration between groups. Kinship analysis detected no close kin between CI and SoG individuals, and low to zero contemporary gene flow. Isotopic values and organochlorine pollutant loads also suggest ecological differences between study areas. We further found that one individual from a pod within the SoG not seen in association with the other four pods and identified as belonging to a potential migrant lineage by genetic analyses, had intermediate isotopic values and contaminant between the two study areas. Overall our results suggest a complex pattern of social and genetic structuring correlated with ecological variation. Consequently at least CI and SoG should be considered as two different management units. Understanding this complexity appears to be an important consideration when monitoring and understanding the viability of these management units. Understand the viability will help the conservation of these threatened management units. This work was funded by Loro Parque Foundation, CEPSA, Ministerio de Medio Ambiente, Fundación Biodiversidad, LIFE+ Indemares ... |
author2 |
SEO/BirdLife Ministerio de Economía y Competitividad (España) Loro Parque Fundación CEPSA Ministerio de Medio Ambiente (España) Fundación Biodiversidad University of British Columbia |
format |
Article in Journal/Newspaper |
author |
Esteban, Ruth Verborgh, Philippe Gauffier, Pauline Giménez, Joan Martín, Vidal Pérez-Gil, Mónica Tejedor, Marisa Almunia, Javier Jepson, Paul D. García-Tiscar, Susana Barrett-Lennard, Lance G. Guinet, Christophe Foote, Andrew D. de Stephanis, Renaud |
author_facet |
Esteban, Ruth Verborgh, Philippe Gauffier, Pauline Giménez, Joan Martín, Vidal Pérez-Gil, Mónica Tejedor, Marisa Almunia, Javier Jepson, Paul D. García-Tiscar, Susana Barrett-Lennard, Lance G. Guinet, Christophe Foote, Andrew D. de Stephanis, Renaud |
author_sort |
Esteban, Ruth |
title |
Using a multi-disciplinary approach to identify a critically endangered killer whale management unit |
title_short |
Using a multi-disciplinary approach to identify a critically endangered killer whale management unit |
title_full |
Using a multi-disciplinary approach to identify a critically endangered killer whale management unit |
title_fullStr |
Using a multi-disciplinary approach to identify a critically endangered killer whale management unit |
title_full_unstemmed |
Using a multi-disciplinary approach to identify a critically endangered killer whale management unit |
title_sort |
using a multi-disciplinary approach to identify a critically endangered killer whale management unit |
publisher |
Elsevier |
publishDate |
2016 |
url |
http://hdl.handle.net/10261/196442 https://doi.org/10.1016/j.ecolind.2016.01.043 https://doi.org/10.13039/501100003329 |
long_lat |
ENVELOPE(-20.972,-20.972,63.993,63.993) |
geographic |
Sog |
geographic_facet |
Sog |
genre |
Killer Whale Killer whale |
genre_facet |
Killer Whale Killer whale |
op_relation |
https://doi.org/10.1016/j.ecolind.2016.01.043 Sí Ecological Indicators 66: 291-300 (2016) 1470-160X http://hdl.handle.net/10261/196442 doi:10.1016/j.ecolind.2016.01.043 http://dx.doi.org/10.13039/501100003329 |
op_rights |
none |
op_doi |
https://doi.org/10.1016/j.ecolind.2016.01.04310.13039/501100003329 |
container_title |
Ecological Indicators |
container_volume |
66 |
container_start_page |
291 |
op_container_end_page |
300 |
_version_ |
1790602571443863552 |