The effects of a motorway on movement behavior and gene flow in a forest carnivore: joint evidence from road mortality, radio tracking and genetics

Detalhes bibliográficos
Autor(a) principal: Carvalho, Filipe
Data de Publicação: 2018
Outros Autores: Lourenço, André, Carvalho, Rafael, Alves, Paulo Célio, Mira, António, Beja, Pedro
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10174/24543
https://doi.org/doi.org/10-1016/j.landurbplan.2018.06.07
Resumo: Roads represent barriers to animal movement due to physical obstruction, mortality, or behavioural avoidance. The population-level consequences of such constraints remain poorly understood, because successful crossings may be sufficient to counteract negative effects of fragmentation and isolation. Here we examine the individualand population-level barrier effects of a motorway on the common genet Genetta genetta, by combining long-term road mortality, radio tracking and population genetics data. We found 84 genets killed at roads, of which 68% were subadults, with a peak mortality during the dispersal period. The home ranges of resident adults often bordered the motorway, and their sizes were similar close to (314 ha, n=9) and far from (258 ha, n=10) the motorway. The crossing rate was much higher for dispersing subadults (4.1 crossings/100 nights, n=3) than for resident adults living near the motorway (0.2 crossings/100 nights, n=9), though the number of tracked subadults crossing the motorway was low. Genetic kinship analysis revealed seven crossings based on father offspring and half-sibling relationships. There was no significant genetic differentiation related to the motorway. The movement of residents were strongly constrained by the motorway, though gene flow mediated by successful crossings, particularly by subadults, likely prevented genetic differentiation. Genet movements across the motorway were probably facilitated by low traffic flow and the presence of crossing structures. Our study implies that evaluating mitigation strategies to reduce the barrier effects of roads would benefit from the integration of mortality, animal behaviour, and population genetics data, to increase effectiveness and avoid wasting scarce conservation resources.
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spelling The effects of a motorway on movement behavior and gene flow in a forest carnivore: joint evidence from road mortality, radio tracking and geneticsAnthropogenic barriersConservation geneticsGenetta genettaHabitat fragmentationMovement EcologyRoad EcologyRoads represent barriers to animal movement due to physical obstruction, mortality, or behavioural avoidance. The population-level consequences of such constraints remain poorly understood, because successful crossings may be sufficient to counteract negative effects of fragmentation and isolation. Here we examine the individualand population-level barrier effects of a motorway on the common genet Genetta genetta, by combining long-term road mortality, radio tracking and population genetics data. We found 84 genets killed at roads, of which 68% were subadults, with a peak mortality during the dispersal period. The home ranges of resident adults often bordered the motorway, and their sizes were similar close to (314 ha, n=9) and far from (258 ha, n=10) the motorway. The crossing rate was much higher for dispersing subadults (4.1 crossings/100 nights, n=3) than for resident adults living near the motorway (0.2 crossings/100 nights, n=9), though the number of tracked subadults crossing the motorway was low. Genetic kinship analysis revealed seven crossings based on father offspring and half-sibling relationships. There was no significant genetic differentiation related to the motorway. The movement of residents were strongly constrained by the motorway, though gene flow mediated by successful crossings, particularly by subadults, likely prevented genetic differentiation. Genet movements across the motorway were probably facilitated by low traffic flow and the presence of crossing structures. Our study implies that evaluating mitigation strategies to reduce the barrier effects of roads would benefit from the integration of mortality, animal behaviour, and population genetics data, to increase effectiveness and avoid wasting scarce conservation resources.Elsevier - Landscape and Urban Planning2019-02-11T17:25:06Z2019-02-112018-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/24543http://hdl.handle.net/10174/24543https://doi.org/doi.org/10-1016/j.landurbplan.2018.06.07engCarvalho, F.; Lourenço, A.; Carvalho, R.; Alves, P.C.; Mira, A.; Pedro Beja, P. 2018. The effects of a motorway on movement behavior and gene flow in a forest carnivore: joint evidence from road mortality, radio tracking and genetics. Landscape and Urban Planning, 178:217-227217-227178Landscape and Urban PlanningICAAMndndndndndnd221Carvalho, FilipeLourenço, AndréCarvalho, RafaelAlves, Paulo CélioMira, AntónioBeja, Pedroinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T19:17:35Zoai:dspace.uevora.pt:10174/24543Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:15:10.471772Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv The effects of a motorway on movement behavior and gene flow in a forest carnivore: joint evidence from road mortality, radio tracking and genetics
title The effects of a motorway on movement behavior and gene flow in a forest carnivore: joint evidence from road mortality, radio tracking and genetics
spellingShingle The effects of a motorway on movement behavior and gene flow in a forest carnivore: joint evidence from road mortality, radio tracking and genetics
Carvalho, Filipe
Anthropogenic barriers
Conservation genetics
Genetta genetta
Habitat fragmentation
Movement Ecology
Road Ecology
title_short The effects of a motorway on movement behavior and gene flow in a forest carnivore: joint evidence from road mortality, radio tracking and genetics
title_full The effects of a motorway on movement behavior and gene flow in a forest carnivore: joint evidence from road mortality, radio tracking and genetics
title_fullStr The effects of a motorway on movement behavior and gene flow in a forest carnivore: joint evidence from road mortality, radio tracking and genetics
title_full_unstemmed The effects of a motorway on movement behavior and gene flow in a forest carnivore: joint evidence from road mortality, radio tracking and genetics
title_sort The effects of a motorway on movement behavior and gene flow in a forest carnivore: joint evidence from road mortality, radio tracking and genetics
author Carvalho, Filipe
author_facet Carvalho, Filipe
Lourenço, André
Carvalho, Rafael
Alves, Paulo Célio
Mira, António
Beja, Pedro
author_role author
author2 Lourenço, André
Carvalho, Rafael
Alves, Paulo Célio
Mira, António
Beja, Pedro
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Carvalho, Filipe
Lourenço, André
Carvalho, Rafael
Alves, Paulo Célio
Mira, António
Beja, Pedro
dc.subject.por.fl_str_mv Anthropogenic barriers
Conservation genetics
Genetta genetta
Habitat fragmentation
Movement Ecology
Road Ecology
topic Anthropogenic barriers
Conservation genetics
Genetta genetta
Habitat fragmentation
Movement Ecology
Road Ecology
description Roads represent barriers to animal movement due to physical obstruction, mortality, or behavioural avoidance. The population-level consequences of such constraints remain poorly understood, because successful crossings may be sufficient to counteract negative effects of fragmentation and isolation. Here we examine the individualand population-level barrier effects of a motorway on the common genet Genetta genetta, by combining long-term road mortality, radio tracking and population genetics data. We found 84 genets killed at roads, of which 68% were subadults, with a peak mortality during the dispersal period. The home ranges of resident adults often bordered the motorway, and their sizes were similar close to (314 ha, n=9) and far from (258 ha, n=10) the motorway. The crossing rate was much higher for dispersing subadults (4.1 crossings/100 nights, n=3) than for resident adults living near the motorway (0.2 crossings/100 nights, n=9), though the number of tracked subadults crossing the motorway was low. Genetic kinship analysis revealed seven crossings based on father offspring and half-sibling relationships. There was no significant genetic differentiation related to the motorway. The movement of residents were strongly constrained by the motorway, though gene flow mediated by successful crossings, particularly by subadults, likely prevented genetic differentiation. Genet movements across the motorway were probably facilitated by low traffic flow and the presence of crossing structures. Our study implies that evaluating mitigation strategies to reduce the barrier effects of roads would benefit from the integration of mortality, animal behaviour, and population genetics data, to increase effectiveness and avoid wasting scarce conservation resources.
publishDate 2018
dc.date.none.fl_str_mv 2018-01-01T00:00:00Z
2019-02-11T17:25:06Z
2019-02-11
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10174/24543
http://hdl.handle.net/10174/24543
https://doi.org/doi.org/10-1016/j.landurbplan.2018.06.07
url http://hdl.handle.net/10174/24543
https://doi.org/doi.org/10-1016/j.landurbplan.2018.06.07
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Carvalho, F.; Lourenço, A.; Carvalho, R.; Alves, P.C.; Mira, A.; Pedro Beja, P. 2018. The effects of a motorway on movement behavior and gene flow in a forest carnivore: joint evidence from road mortality, radio tracking and genetics. Landscape and Urban Planning, 178:217-227
217-227
178
Landscape and Urban Planning
ICAAM
nd
nd
nd
nd
nd
nd
221
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.publisher.none.fl_str_mv Elsevier - Landscape and Urban Planning
publisher.none.fl_str_mv Elsevier - Landscape and Urban Planning
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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