A remote-controlled teleinjection system for the low-stress capture of large mammals

Ryser, Andreas; Scholl, Martin; Zwahlen, M. L. Palmer; Oetliker, Martin; Ryser-Degiorgis, Marie-Pierre; Breitenmoser, Urs

doi:10.2193/0091-7648(2005)33[721:artsft]2.0.co;2

Cited by 27 publications

(38 citation statements)

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“…Subadult lynx appear, therefore, to have a low capability to move through unfavourable habitat and to cross linear barriers such as fenced highways. Observations from adult radio-tagged lynx, which sometimes roam far outside their home ranges show, however, that lynx can cross such obstacles Ryser et al, 2004).…”

Section: Discussionmentioning

confidence: 99%

Importance of dispersal for the expansion of a Eurasian lynxLynx lynxpopulation in a fragmented landscape

Zimmermann

Breitenmoser‐Würsten

Breitenmoser

2007

Oryx

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Dispersal allows recolonization of previous areas of habitat following severe depression of a population but the significance of this is not clear in felids. There is little evidence to support the general belief that subadult felids will colonize new areas, although this is a crucial assumption in reintroduction or recovery projects. Eurasian lynx Lynx lynx were reintroduced into the Swiss Alps and have subsequently spread over part of their potential range but the expansion halted in the mid 1980s. We postulated that high lynx densities would lead to an expansion of the population, and to assess the potential of this population to expand we compared the dispersal characteristics of 22 subadults from the northwest Swiss Alps, where an increase in lynx abundance occurred from 1995 onwards, to 17 individuals from the Jura Mountains, an area with a lower lynx density.Dispersal data came mainly from radio-telemetry. Dispersal rates and distances for subadults that completed dispersal were lower in the north-west Swiss Alps than in the Jura Mountains. In general, subadults exhibited little ability to cross major barriers such as highways. The hypothesis that high density alone will foster the expansion of the population was therefore not confirmed. This has consequences for the reintroduction and recovery of carnivores in fragmented landscapes. To establish only one strong source population may not be an optimal strategy, and population nuclei should therefore be founded in several neighbouring patches.

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Section: Discussionmentioning

confidence: 99%

Importance of dispersal for the expansion of a Eurasian lynxLynx lynxpopulation in a fragmented landscape

Zimmermann

Breitenmoser‐Würsten

Breitenmoser

2007

Oryx

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“…Here, I discuss the feasibility of using a new trapping method, a minimally invasive capture system (MICS; Ryser et al 2005), for the livetrapping of the two larger felids of the Americas, the jaguar Panthera onca (Linnaeus, 1758) and the puma Puma concolor (Linnaeus, 1771). Secondly, I propose a possible protocol for its use.…”

Section: Introductionmentioning

confidence: 99%

A minimally invasive capture system for the safe and compassionate live-trapping of jaguar and puma

Fernández¹

2018

Galemys

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Live trapping of large carnivores can have counter-productive effects on the animal's health and postrelease behavior. Nonetheless, trapping may be necessary for scientific inquiry, wildlife management and conservation. Capture methods should be efficient, selective, compassionate, and safe for both animals and people. Here, I review the methods used to capture the largest American felids, jaguars and pumas, and propose the use of a minimally invasive capture system (MICS). The device consists of a blowgun remotely controlled by means of cameras and a swiveling 2-way pan-tilt head. The blowgun is monitored by video camera and triggered from a distance of up to 400 m and is capable of shooting darts with high accuracy at distances of about 12 m. This method was developed a decade ago but has not been used despite clear advantages over traditional methods. The use of a MICS can be cheaper, lower in human investment, higher in efficiency and selectivity, and safer and more compassionate than the traditional methods used. The main disadvantages are related to manufacturing, as it must be custom built made by a specialized professional. In addition, any adjustments or repairs must also be handled by a specialist. Nevertheless, these challenges should not discourage the use of MICS, as ethical considerations are of growing importance worldwide when working with wild species. The use of MICS for the live-capture of wild jaguars and pumas (or other medium and large carnivores) deserves further consideration, testing, and discussion. ResumenLa captura de grandes carnívoros vivos puede tener efectos contraproducentes sobre la salud del animal y su comportamiento posterior cuando se libera. No obstante, la captura puede ser necesaria para la investigación científica, la gestión o la conservación de las especies involucradas. Los métodos de captura deben ser eficientes, selectivos, compasivos y seguros tanto para los animales como para las personas. En este artículo se revisan los métodos utilizados para capturar jaguares y pumas, y se propone el uso de un sistema de captura mínimamente invasivo (MICS). El dispositivo consiste en una cerbatana controlada a distancia por medio de cámaras, y es capaz de disparar dardos con alta precisión a distancias de hasta 12 m. Este método se desarrolló hace una década, pero no se ha utilizado a pesar de las claras ventajas con respecto a los métodos tradicionales. El uso de MICS puede ser más económico, necesitar de menor inversión humana, tener mayor eficiencia y selectividad, y ser más seguro y compasivo que los métodos tradicionales. Las principales desventajas están relacionadas con la fabricación, ya que debe ser hecha por un profesional especializado, y cualquier ajuste o reparación debe ser realizada por un especialista. Sin embargo, estos desafíos no deben desalentar el uso de MISC, ya que las consideraciones éticas tienen una importancia creciente a nivel mundial cuando se trabaja con especies silvestres. El uso de MICS para la captura en vivo de jaguares y pumas (u otros carnívo...

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“…Blowguns have been used worldwide and have a long history of use for killing animals for food (Jett 1970). For several decades ecologists have used them to tag or administer treatments to wildlife species that are difficult to capture or handle (Ripley 1949, Warren et al 1979, Barnard and Dobbs 1980, Ryan 1997, Ryser et al 2005), or to live‐capture animals such as lizards (Enge et al 2004, Hamilton et al 2007).…”

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Using a specialized blowgun dart to obtain genetic samples from mammals

Keeley

2012

Wildlife Society Bulletin

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We developed a blunt, sticky blowgun dart to collect genetic samples from mammals, and used the technique on the variegated squirrel (Sciurus variegatoides) in June and July 2010. Blowgun and darts cost 40 m. Total sampling success was 88%. The blowgun enabled a rapid method of sample collection that reduced animal stress and the expenses associated with trapping. Developing proficiency in use of the blowgun can be challenging but is overcome with practice. It is difficult to use the blowgun method during heavy rain or high winds. © 2012 The Wildlife Society.

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A remote-controlled teleinjection system for the low-stress capture of large mammals

Cited by 27 publications

References 5 publications

Importance of dispersal for the expansion of a Eurasian lynxLynx lynxpopulation in a fragmented landscape

Importance of dispersal for the expansion of a Eurasian lynxLynx lynxpopulation in a fragmented landscape

A minimally invasive capture system for the safe and compassionate live-trapping of jaguar and puma

Using a specialized blowgun dart to obtain genetic samples from mammals

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