Integrating Multiple Techniques to Estimate Population Size of an Impacted Dusky Dolphin’s Population in Patagonia, Argentina

Autores
Degrati, Mariana; Loizaga de Castro, Rocio; Coscarella, Mariano Alberto; Sueyro, Nicolás; Crespo, Enrique Alberto; Dans, Silvana Laura
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Successful conservation strategies require an accurate estimation of population size and this parameter is one of the most important factors that determine the rate of various evolutionary processes. In this study we integrated information from genetic, photo-identification and aerial surveys of dusky dolphins to determine the effective population size and the number of dolphins that inhabit the gulfs of Peninsula Valdés (GN and GSJ) and are exposed to tourism vessel traffic. Photo-identification sessions and biopsies samples were collected from a research vessel between 2004 and 2013 to estimate the number of dolphins in the area by capture-recapture methods and the effective population size using mtDNA data. In addition, 4 aerial surveys were carried out using line transects to estimate density via distance sampling. The long-term effective size estimated was 992.87-1103.19 individuals. During the photo-identification period and applying a mark rate of 0.416 the total estimated individuals in GN was 374 (95% CI:237-511). For GSJ the estimated individuals in the area was 55 (95% CI: 2-108, mark rate 0.692). From aerial surveys, the overall density estimate was D ̂=0.13 dolphins/km2 (95% CI: 0.052 - 0.35; CV:49.60). The estimation for GN was 325 (95% CI:130-875), while for GSJ, was 104 (95% CI:42-280) individuals. These are the first estimations of the number and the effective population size for dusky dolphins in a small-scale area along north Patagonia. Dusky dolphins groups are impacted by anthropogenic activities, therefore the information reported here contributes population information to help to the species management and conservation.
Fil: Degrati, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Loizaga de Castro, Rocio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina
Fil: Coscarella, Mariano Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Sueyro, Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Dans, Silvana Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Materia
EFFECTIVE POPULATION SIZE
ABUNDANCE
GENETIC
PHOTO-IDENTIFICATION
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/153130
Acceder
id CONICETDig_e060b4b3af6d5787ecd2d8628c1547dc
oai_identifier_str oai:ri.conicet.gov.ar:11336/153130
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Integrating Multiple Techniques to Estimate Population Size of an Impacted Dusky Dolphin’s Population in Patagonia, ArgentinaDegrati, MarianaLoizaga de Castro, RocioCoscarella, Mariano AlbertoSueyro, NicolásCrespo, Enrique AlbertoDans, Silvana LauraEFFECTIVE POPULATION SIZEABUNDANCEGENETICPHOTO-IDENTIFICATIONhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Successful conservation strategies require an accurate estimation of population size and this parameter is one of the most important factors that determine the rate of various evolutionary processes. In this study we integrated information from genetic, photo-identification and aerial surveys of dusky dolphins to determine the effective population size and the number of dolphins that inhabit the gulfs of Peninsula Valdés (GN and GSJ) and are exposed to tourism vessel traffic. Photo-identification sessions and biopsies samples were collected from a research vessel between 2004 and 2013 to estimate the number of dolphins in the area by capture-recapture methods and the effective population size using mtDNA data. In addition, 4 aerial surveys were carried out using line transects to estimate density via distance sampling. The long-term effective size estimated was 992.87-1103.19 individuals. During the photo-identification period and applying a mark rate of 0.416 the total estimated individuals in GN was 374 (95% CI:237-511). For GSJ the estimated individuals in the area was 55 (95% CI: 2-108, mark rate 0.692). From aerial surveys, the overall density estimate was D ̂=0.13 dolphins/km2 (95% CI: 0.052 - 0.35; CV:49.60). The estimation for GN was 325 (95% CI:130-875), while for GSJ, was 104 (95% CI:42-280) individuals. These are the first estimations of the number and the effective population size for dusky dolphins in a small-scale area along north Patagonia. Dusky dolphins groups are impacted by anthropogenic activities, therefore the information reported here contributes population information to help to the species management and conservation.Fil: Degrati, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; ArgentinaFil: Loizaga de Castro, Rocio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; ArgentinaFil: Coscarella, Mariano Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; ArgentinaFil: Sueyro, Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; ArgentinaFil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; ArgentinaFil: Dans, Silvana Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; ArgentinaFrontiers Media2020-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/153130Degrati, Mariana; Loizaga de Castro, Rocio; Coscarella, Mariano Alberto; Sueyro, Nicolás; Crespo, Enrique Alberto; et al.; Integrating Multiple Techniques to Estimate Population Size of an Impacted Dusky Dolphin’s Population in Patagonia, Argentina; Frontiers Media; Frontiers In Marine Science; 7; 5-2020; 1-92296-7745CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.frontiersin.org/article/10.3389/fmars.2020.00289/fullinfo:eu-repo/semantics/altIdentifier/doi/10.3389/fmars.2020.00289info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:23:56Zoai:ri.conicet.gov.ar:11336/153130instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:23:56.68CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Integrating Multiple Techniques to Estimate Population Size of an Impacted Dusky Dolphin’s Population in Patagonia, Argentina
title Integrating Multiple Techniques to Estimate Population Size of an Impacted Dusky Dolphin’s Population in Patagonia, Argentina
spellingShingle Integrating Multiple Techniques to Estimate Population Size of an Impacted Dusky Dolphin’s Population in Patagonia, Argentina
Degrati, Mariana
EFFECTIVE POPULATION SIZE
ABUNDANCE
GENETIC
PHOTO-IDENTIFICATION
title_short Integrating Multiple Techniques to Estimate Population Size of an Impacted Dusky Dolphin’s Population in Patagonia, Argentina
title_full Integrating Multiple Techniques to Estimate Population Size of an Impacted Dusky Dolphin’s Population in Patagonia, Argentina
title_fullStr Integrating Multiple Techniques to Estimate Population Size of an Impacted Dusky Dolphin’s Population in Patagonia, Argentina
title_full_unstemmed Integrating Multiple Techniques to Estimate Population Size of an Impacted Dusky Dolphin’s Population in Patagonia, Argentina
title_sort Integrating Multiple Techniques to Estimate Population Size of an Impacted Dusky Dolphin’s Population in Patagonia, Argentina
dc.creator.none.fl_str_mv Degrati, Mariana
Loizaga de Castro, Rocio
Coscarella, Mariano Alberto
Sueyro, Nicolás
Crespo, Enrique Alberto
Dans, Silvana Laura
author Degrati, Mariana
author_facet Degrati, Mariana
Loizaga de Castro, Rocio
Coscarella, Mariano Alberto
Sueyro, Nicolás
Crespo, Enrique Alberto
Dans, Silvana Laura
author_role author
author2 Loizaga de Castro, Rocio
Coscarella, Mariano Alberto
Sueyro, Nicolás
Crespo, Enrique Alberto
Dans, Silvana Laura
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv EFFECTIVE POPULATION SIZE
ABUNDANCE
GENETIC
PHOTO-IDENTIFICATION
topic EFFECTIVE POPULATION SIZE
ABUNDANCE
GENETIC
PHOTO-IDENTIFICATION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Successful conservation strategies require an accurate estimation of population size and this parameter is one of the most important factors that determine the rate of various evolutionary processes. In this study we integrated information from genetic, photo-identification and aerial surveys of dusky dolphins to determine the effective population size and the number of dolphins that inhabit the gulfs of Peninsula Valdés (GN and GSJ) and are exposed to tourism vessel traffic. Photo-identification sessions and biopsies samples were collected from a research vessel between 2004 and 2013 to estimate the number of dolphins in the area by capture-recapture methods and the effective population size using mtDNA data. In addition, 4 aerial surveys were carried out using line transects to estimate density via distance sampling. The long-term effective size estimated was 992.87-1103.19 individuals. During the photo-identification period and applying a mark rate of 0.416 the total estimated individuals in GN was 374 (95% CI:237-511). For GSJ the estimated individuals in the area was 55 (95% CI: 2-108, mark rate 0.692). From aerial surveys, the overall density estimate was D ̂=0.13 dolphins/km2 (95% CI: 0.052 - 0.35; CV:49.60). The estimation for GN was 325 (95% CI:130-875), while for GSJ, was 104 (95% CI:42-280) individuals. These are the first estimations of the number and the effective population size for dusky dolphins in a small-scale area along north Patagonia. Dusky dolphins groups are impacted by anthropogenic activities, therefore the information reported here contributes population information to help to the species management and conservation.
Fil: Degrati, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Loizaga de Castro, Rocio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina
Fil: Coscarella, Mariano Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Sueyro, Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Dans, Silvana Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
description Successful conservation strategies require an accurate estimation of population size and this parameter is one of the most important factors that determine the rate of various evolutionary processes. In this study we integrated information from genetic, photo-identification and aerial surveys of dusky dolphins to determine the effective population size and the number of dolphins that inhabit the gulfs of Peninsula Valdés (GN and GSJ) and are exposed to tourism vessel traffic. Photo-identification sessions and biopsies samples were collected from a research vessel between 2004 and 2013 to estimate the number of dolphins in the area by capture-recapture methods and the effective population size using mtDNA data. In addition, 4 aerial surveys were carried out using line transects to estimate density via distance sampling. The long-term effective size estimated was 992.87-1103.19 individuals. During the photo-identification period and applying a mark rate of 0.416 the total estimated individuals in GN was 374 (95% CI:237-511). For GSJ the estimated individuals in the area was 55 (95% CI: 2-108, mark rate 0.692). From aerial surveys, the overall density estimate was D ̂=0.13 dolphins/km2 (95% CI: 0.052 - 0.35; CV:49.60). The estimation for GN was 325 (95% CI:130-875), while for GSJ, was 104 (95% CI:42-280) individuals. These are the first estimations of the number and the effective population size for dusky dolphins in a small-scale area along north Patagonia. Dusky dolphins groups are impacted by anthropogenic activities, therefore the information reported here contributes population information to help to the species management and conservation.
publishDate 2020
dc.date.none.fl_str_mv 2020-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/153130
Degrati, Mariana; Loizaga de Castro, Rocio; Coscarella, Mariano Alberto; Sueyro, Nicolás; Crespo, Enrique Alberto; et al.; Integrating Multiple Techniques to Estimate Population Size of an Impacted Dusky Dolphin’s Population in Patagonia, Argentina; Frontiers Media; Frontiers In Marine Science; 7; 5-2020; 1-9
2296-7745
CONICET Digital
CONICET
url http://hdl.handle.net/11336/153130
identifier_str_mv Degrati, Mariana; Loizaga de Castro, Rocio; Coscarella, Mariano Alberto; Sueyro, Nicolás; Crespo, Enrique Alberto; et al.; Integrating Multiple Techniques to Estimate Population Size of an Impacted Dusky Dolphin’s Population in Patagonia, Argentina; Frontiers Media; Frontiers In Marine Science; 7; 5-2020; 1-9
2296-7745
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.frontiersin.org/article/10.3389/fmars.2020.00289/full
info:eu-repo/semantics/altIdentifier/doi/10.3389/fmars.2020.00289
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Frontiers Media
publisher.none.fl_str_mv Frontiers Media
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1844614235544354816
score 13.070432

Publicaciones similares