American Mink (Neovison vison) Trapping in the Cape Horn Biosphere Reserve: Enhancing Current Trap Systems to Control an Invasive Predator

Assessment of the efficiency in trapping North American mink (Neovison vison) for population control in Patagonia

“…Our study did not pretend to assess mink population density neither to develop a methodology for that; our goal was to develop a baseline to cooperate with the discussion and research about efficiency to control or eradicate mink from Patagonia, started by Davis et al (2012), with real field data from a wide study area. Nevertheless, our estimated population size [N(1)] was not to different from the theoretical population: indeed, N(1) recorded an average of 91% of the theoretical population (see Zabala et al 2010;Zuberogoitia et al 2010).…”

“…The lineal sections covered by traps/day following the shore contour were between 4 and 15 km (Table 1). Animals were caught in cage traps with double entrance (81 cm long, 21 cm high, and 23.5 cm wide), baited with can fish (Davis et al 2012). Traps were deployed along main river stretches as well as along lakes shores and seashores.…”

“…In fact, mink is implicated in a myriad of conservation issues for birds and small mammals in Argentina and Chile and occurs in both freshwater and marine habitats (Medina 1997;Fasola et al 2009;Medina-Vogel et al 2013). The spread of invasive North American mink in Patagonia with its devastating impact on native biodiversity has produced a growing realization of the need of an active management to minimize such impacts (Rozzi and Sherriffs 2003;Davis et al 2012). Eradication of vertebrate aliens in mainland has been successful in a few instances when control actions were taken early (e,g., Coypu in Britain) (Gosling and Baker 1989).…”

Los ojos del árbol: percibiendo, registrando, comprendiendo y contrarrestando las invasiones biológicas en tiempos de rápida homogeneizacion biocultural

“…El visón es un mustélido de hábitos semiacuáticos (Larivière, 1999) que fue inicialmente introducido desde granjas en Tierra del Fuego a partir de la década de 1940. La especie comenzó a ser abundante a lo largo de la costa del Canal Beagle en la década de 1990, detectándose por primera vez en la isla Navarino en el año 2001 (Rozzi & Sherriffs, 2003), así como también en años posteriores en otras islas de la RBCH: isla Hoste (Anderson et al 2006), isla Lennox (Davis et al 2012), islas Gordon y Gabriel (Valenzuela et al 2014) y al sur de los glaciares de la cordillera Darwin, Tierra del Fuego (Crego et al 2015).…”

Long-term socio-ecological research in Southern Patagonia: Interdisciplinary strategies to achieve natural resource conservation by sustainable management under scenarios of global change

“…A su vez, el trabajo continuo enfocado en una especie exótica ha favorecido nuevas líneas de investigación sobre ecología y manejo de otras especies exóticas, e.g. rata almizclera (O. zibethica, Deferrari 2007), peludo (Chaetophractus villosus, Poljak et al 2007), visón americano (Neovison vison, Maley et al 2011;Davis et al 2012;Valenzuela et al 2013), salmón chinook (Oncorhynchus tshawytscha, Fernández et al 2010) y la maleza Hieracium pilosella (Cipriotti et al 2014). A su vez, varios autores explícitamente buscan vincular su trabajo con los tomadores de decisiones (e.g.…”