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Título: | No effect of satellite tagging on survival, recruitment, longevity, productivity and social dominance of a raptor, and the provisioning and condition of its offspring |
Autor: | Sergio, Fabrizio CSIC ORCID; Tavecchia, Giacomo CSIC ORCID; Tanferna, Alessandro CSIC ORCID ; López-Jiménez, Lidia CSIC ORCID; Blas, Julio CSIC ORCID ; Blas, Julio CSIC ORCID ; de Stephanis, Renaud CSIC ORCID; Marchant, Tracy A.; Kumar, Nishant; Hiraldo, Fernando CSIC ORCID | Palabras clave: | Vital rates Telemetry Movement ecology Radiomarking Satellite tagging Milvus migrans GPS Backpack attachment Harness Impact |
Fecha de publicación: | 26-ago-2015 | Editor: | Blackwell Publishing | Citación: | Journal of Applied Ecology 52(6): 1665-1675 (2015) | Resumen: | The deployment of electronic devices on animals is rapidly expanding and producing leapfrog advances in ecological knowledge. Even though their effects on the ecology and behaviour of the marked subjects are potentially important, <10% of the studies are accompanied by an evaluation of impact, and comprehensive, long-term assessments have been few. Therefore, there is an urgent need to test for impacts, especially for tags that are heavy and deployed for long time periods, such as satellite transmitters. We marked 110 individuals of a medium-sized, migratory raptor, the black kite Milvus migrans, with GPS satellite tags, representing about 4% of the body mass and attached as backpacks through a Teflon harness. Tagged individuals were compared to control animals of similar sex, age and breeding status for a large number of behavioural, condition-related and ecological traits. Despite a sample size two- to threefold greater than most previous assessments that reported significant impacts, there was no detectable difference between tagged and control individuals in key vital rates such as survival probability, longevity, recruitment, age of first breeding, reproductive performance and timing of breeding. Tagged and untagged kites showed similar social dominance during fights over food and a similar capability to provision nestlings, which prevented carry-over effects on the stress levels and condition of their offspring. Synthesis and applications. Radio-marking studies are growing exponentially in the current 'movement ecology era', and impact assessments will be ever more important. In principle, tags of up to 4% mass-load can be deployed without apparent harm on some avian soaring species, but impacts should be properly evaluated on a case-by-case basis. Resilient species for which impacts seem weak could be used as early warning systems for trials of new devices: if impacts are observed, they are likely to be even greater on more vulnerable species. Finally, individual fatalities caused by marking should be taken into serious account, but comprehensively evaluated in the light of broader population-level impacts. Future initiatives to minimize tagging impacts could include more stringent licensing criteria enforcing attendance at training courses or incorporation of impact evaluations into study designs, increased availability of training courses for tagging, and enhanced sharing of information through blogs, workshops or specialized journal sections. Radio-marking studies are growing exponentially in the current 'movement ecology era', and impact assessments will be ever more important. In principle, tags of up to 4% mass-load can be deployed without apparent harm on some avian soaring species, but impacts should be properly evaluated on a case-by-case basis. Resilient species for which impacts seem weak could be used as early warning systems for trials of new devices: if impacts are observed, they are likely to be even greater on more vulnerable species. Finally, individual fatalities caused by marking should be taken into serious account, but comprehensively evaluated in the light of broader population-level impacts. Future initiatives to minimize tagging impacts could include more stringent licensing criteria enforcing attendance at training courses or incorporation of impact evaluations into study designs, increased availability of training courses for tagging, and enhanced sharing of information through blogs, workshops or specialized journal sections. | Versión del editor: | http://dx.doi.org/10.1111/1365-2664.12520 | URI: | http://hdl.handle.net/10261/133000 | DOI: | 10.1111/1365-2664.12520 | Identificadores: | doi: 10.1111/1365-2664.12520 issn: 1365-2664 |
Aparece en las colecciones: | (IMEDEA) Artículos (EBD) Artículos |
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