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Abstract:

Invasive American mink is a severe threat to endangered waterbird populations. In Europe and South America, control efforts have been increasing in the last decades. Mink has a proven acute impact on the Hooded Grebe, a critically endangered specialist of highland plateau lakes in Patagonia where a single mink attack can deplete up to 4% of the global population. We aimed to examine mink ecology in Austral Patagonia to inform ongoing control programs in the region and contribute to efforts elsewhere to counteract mink impact. We evaluated mink distribution at a regional scale and found that its distribution extends across the steppe-arid environment, often assumed to be an obstacle for mink colonization. Consequently, its current distribution fully overlaps with the Hooded Grebe breeding grounds. At a finer scale, we used 3 techniques to detect American mink at different times of the year and found a temporal sex-biased occupation-dispersion pattern: permanent presence of both sexes in areas around the plateaus used by grebes and upstream male biased dispersion in late summer (which leads young mink to the grebes’ lakes). Therefore, plateau perimeters function as an invasion front that resets yearly. Lastly, from scat content analysis we detected a shift in mink diet from a generalist type in lowland rivers to a diet specialized on birds in highland lakes, where attacks are exclusively directed towards Hooded Grebes and where waterbird presence might be a determinant of mink presence (regardless of other prey). All of these findings have profound relevance for control schedules and priorities. © 2017 Elsevier Ltd

Registro:

Documento: Artículo
Título:A familiar face with a novel behavior raises challenges for conservation: American mink in arid Patagonia and a critically endangered bird
Autor:Fasola, L.; Roesler, I.
Filiación:Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-Delegación Técnica Patagonia, Administración de Parques Nacionales, O'Connor 1180, San Carlos de Bariloche, Río Negro 8400, Argentina
Proyecto Macá Tobiano – Aves Argentinas/Asociación Ornitológica del Plata y Asociación Ambiente Sur, Argentina
Departamento de Ecología, Genética y Evolución - Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II Ciudad Universitaria, Ciudad Autónoma de Buenos Aires, C1428EGA, Argentina
Zoological Society of London, United Kingdom
Palabras clave:biological invasion; breeding site; conservation management; diet; ecological impact; endangered species; generalist; invasive species; lowland environment; mustelid; plateau; prioritization; sex ratio; spatial distribution; specialist; species conservation; waterfowl; Europe; Patagonia; South America; Aves; Mustela; Mustela vison; Podicipedidae
Año:2018
Volumen:218
Página de inicio:217
Página de fin:222
DOI: http://dx.doi.org/10.1016/j.biocon.2017.12.031
Título revista:Biological Conservation
Título revista abreviado:Biol. Conserv.
ISSN:00063207
CODEN:BICOB
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00063207_v218_n_p217_Fasola

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Citas:

---------- APA ----------
Fasola, L. & Roesler, I. (2018) . A familiar face with a novel behavior raises challenges for conservation: American mink in arid Patagonia and a critically endangered bird. Biological Conservation, 218, 217-222.
http://dx.doi.org/10.1016/j.biocon.2017.12.031
---------- CHICAGO ----------
Fasola, L., Roesler, I. "A familiar face with a novel behavior raises challenges for conservation: American mink in arid Patagonia and a critically endangered bird" . Biological Conservation 218 (2018) : 217-222.
http://dx.doi.org/10.1016/j.biocon.2017.12.031
---------- MLA ----------
Fasola, L., Roesler, I. "A familiar face with a novel behavior raises challenges for conservation: American mink in arid Patagonia and a critically endangered bird" . Biological Conservation, vol. 218, 2018, pp. 217-222.
http://dx.doi.org/10.1016/j.biocon.2017.12.031
---------- VANCOUVER ----------
Fasola, L., Roesler, I. A familiar face with a novel behavior raises challenges for conservation: American mink in arid Patagonia and a critically endangered bird. Biol. Conserv. 2018;218:217-222.
http://dx.doi.org/10.1016/j.biocon.2017.12.031