Practical considerations for the field study of American mink Mustela vison in lowland England.

Yamaguchi, Nobuyuki; Strachan, Robert; Macdonald, David W.

doi:10.3106/mammalstudy.27.127

Cited by 9 publications

(4 citation statements)

References 11 publications

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“…Traps were checked once a day, early in the morning. Captured mink were transferred to a wooden box (0·15 × 0·15 × 0·48 m) with a Perspex window for the induction of anaesthesia (described in Yamaguchi, Strachan & Macdonald 2002) and anaesthetized using isoflurane (IsoFlo: Schering‐Plough Animal Health, Welwyn Garden City, Hertfordshire, UK) delivered via a vaporizer attached to a portable oxygen cylinder (Mathews, Honess & Wofensohn 2002). Following induction, animals were transferred to a face mask to maintain anaesthesia during the handling procedure.…”

Section: Methodsmentioning

confidence: 99%

Recording the free‐living behaviour of small‐bodied, shallow‐diving animals with data loggers

Hays

Forman

Harrington

et al. 2006

Journal of Animal Ecology

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Summary1. Time-depth data recorders (TDRs) have been widely used to explore the behaviour of relatively large, deep divers. However, little is known about the dive behaviour of small, shallow divers such as semi-aquatic mammals. 4.Temperature data recorded by TDRs covaried with diving behaviour: they were relatively cold (modal temperature 4-6 ° C across individuals) when mink were diving and relatively warm (modal temperature 24-36 ° C across individuals) when mink were not diving. 5. Individuals differed hugely in their use of rivers, reflecting foraging plasticity across both terrestrial and aquatic environments. For some individuals there was < 1 dive per day while for others there was > 100 dives per day. 6. We have shown it is now possible to record the diving behaviour of small free-living animals that only dive a few tens of centimetres, opening up the way for a new range of TDR studies on shallow diving species.

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Section: Methodsmentioning

confidence: 99%

Recording the free‐living behaviour of small‐bodied, shallow‐diving animals with data loggers

Hays

Forman

Harrington

et al. 2006

Journal of Animal Ecology

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“…They were then sexed and aged broadly into juveniles and adults based on tooth wear combined with the presence or absence of milk teeth (Yamaguchi et al 2002). For the purposes of simple categorization as adult and juvenile, this was deemed sufficient.…”

Section: Methods and Resultsmentioning

confidence: 99%

Removal of American mink (Neovison vison) from the Uists, Outer Hebrides, Scotland

2015

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Since escaping from fur farms in the 1950s, American mink had colonised the 2800 km 2 archipelago of the Outer Hebrides of Scotland. Between November 2001 and June 2006 the species was removed from a total of 850 km 2 of the southernmost islands, collectively named the Uists, as part of a pilot study exploring the feasibility of large scale eradication throughout the archipelago. Animals were also controlled in neighbouring South Harris (255 km 2 ) to reduce the risk of recolonisation. The project used two main methods, the operation of coastal and riparian cage traps; and trapping at breeding dens located using trained dogs. In the Uists this resulted in 100,824 trap nights over 4 years. Den searches were carried out over 500 handler-days. Overall a total of 228 mink was caught in The Uists, with the last capture in March 2005. After this date, despite a further 7 months of intensive trapping and searching effort, no further signs of mink were found and they were considered likely to have been removed from this region. In the buffer area of South Harris, 41,674 trap nights over 4 years resulted in 240 captures with few animals being caught by the end of the project. This effort greatly reduced the risk of recolonisation from this region, although there was still a possibility of extant isolated populations remaining within the region, particularly on offshore islets, which would then be detected and trapped by a follow up programme. An adaptive management process resulted in significant increases in trapping efficiency. Improvements included optimisation of trap spacing and the frequency and duration of trap-line operation; improvements in the cage designs and use of lures. The protocols developed here were used in the subsequent eradication campaign in the remainder of the Outer Hebrides.

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“…Esto podría sustentar la hipótesis de que los visones no se encuentran todo el año en el lugar. Asimismo, en todas las temporadas monitoreadas los TI se concentraron en enero, lo cual coincide con la estacionalidad descrita para la especie (Tabla 3), donde este periodo sería el momento del año en que los individuos muestran mayor actividad (Zschille et al 2010, Hlaváčová & Hlaváč 2014 y se obtiene el mayor éxito de capturas en los programas de erradicación (Yamaguchi et al 2002, SAG 2017. Esto se debe a que los nacimientos ocurrirían entre fines de octubre y principios de noviembre (Fig.…”

Section: / 10unclassified

Nuevos antecedentes de mamíferos nativos y exóticos de hábitos semiacuáticos en el islote Albatros, Seno Almirantazgo

Dougnac¹,

Arredondo²,

Constanzo³

et al. 2022

AIP

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Entre las especies de mamíferos con hábitos semiacuáticos presentes en Chile se encuentran dos mustélidos nativos, el chungungo (Lontra felina) y el huillín (Lontra provocax). Asimismo, han sido introducidos dos mamíferos semiacuáticos exóticos e invasores en el país, el visón americano (Neovison vison) y el castor americano (Castor canadensis). Estas últimas especies son ampliamente reconocidas por los efectos negativos que provocan sobre los ecosistemas y las especies nativas. Si bien todas estas especies incluyen en su distribución más austral al archipiélago de Tierra del Fuego, en la región de Magallanes, existen pocos antecedentes documentados sistemáticamente sobre su presencia en canales interiores. En este estudio se describe la presencia de mamíferos semiacuáticos mediante el monitoreo con cámaras trampa en el Islote Albatros, en el Seno Almirantazgo entre las temporadas estivales 2016 – 2017 y 2021 – 2022, con esfuerzos de muestreo (EM) que variaron entre 499 durante la temporada 2018-2019 y 3.658 en 2020-2021. A partir de los registros obtenidos se calcularon los índices de abundancia relativa (IAR) para cada una de las especies registradas: visón americano (rango=0-8), huillín (rango=0,08 – 5) y castor americano (rango=0-0,144). Se destaca el primer registro de presencia de castor y huillín para el Islote Albatros, confirmándose además la reproducción de esta última especie en este. Estos hallazgos resultan de gran relevancia en el contexto de los objetos de conservación del Área Marina Costera Protegida de Múltiples Usos (AMCP-MU) Seno Almirantazgo, pues son un aporte clave para la toma de decisiones informada y el manejo efectivo de esta área protegida. También resaltan la importancia de implementar y sostener esfuerzos de monitoreo sistemáticos tanto de los objetos de conservación del área como de las amenazas que enfrentan.

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Practical considerations for the field study of American mink Mustela vison in lowland England.

Cited by 9 publications

References 11 publications

Recording the free‐living behaviour of small‐bodied, shallow‐diving animals with data loggers

Recording the free‐living behaviour of small‐bodied, shallow‐diving animals with data loggers

Removal of American mink (Neovison vison) from the Uists, Outer Hebrides, Scotland

Nuevos antecedentes de mamíferos nativos y exóticos de hábitos semiacuáticos en el islote Albatros, Seno Almirantazgo

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