An Evaluation of Long-Term Capture Effects in Ursids: Implications for Wildlife Welfare and Research

Cattet, Marc; Boulanger, John; Stenhouse, Gordon B.; Powell, Roger A.; Reynolds‐Hogland, Melissa J.

doi:10.1644/08-mamm-a-095.1

Cited by 191 publications

(200 citation statements)

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“…Several studies have reported negative consequences of capture and marking on behavior (Pelletier et al, 2004), foraging efficiency (Saraux et al, 2011), rates of production and abandonment of young (Ballard and Tobey, 1981;Cô té et al, 1998), and survival (Oosthuizen et al, 2009). For example, Cattet et al (2008) found that repeated immobilization reduced mobility and body condition of grizzly bears (Ursus arctos horribilis) and black bears (Ursus americanus). Frequently, animals must be anesthetized more than once to change telemetry collars, download data, or measure growth.…”

Section: Introductionmentioning

confidence: 99%

Chemical Immobilization of Raccoons (Procyon Lotor) With Ketamine-Medetomidine Mixture and Reversal With Atipamezole

Robert

Garant

Pelletier

2012

Journal of Wildlife Diseases

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ABSTRACT:Safe and reliable capture techniques for wild animals are important for ecologic studies and management operations. We assessed the efficiency of ketamine-medetomidine (K:M) injection and reversal with atipamezole. We anesthetized 67 raccoons (Procyon lotor; 34 males, 33 females) 103 times (individuals captured between one and five times) from April 2009-October 2010 in Mont-Orford Provincial Park, Quebec, Canada. We administered a 1:1 mixture by volume of ketamine and medetomidine by intramuscular injection. Mean (6SD) induction times for males and females were 6.162.8 and 6.663.7 min, respectively. Mean induction time was 2 min longer for juveniles than for adults (7.863.9 and 5.862.9 min, respectively) and longer in autumn than in spring for adults (7.763.8 and 5.462.9 min, respectively). Recovery time after administration of atipamezole was 9.663.8 and 8.464.4 min for males and females, respectively. Recovery time was longer in spring than in autumn (10.264 and 7.463.8 min, respectively) for adults. Induction time increased by 166% after five captures of the same individual. Immobilization did not affect body mass, adult survival, or female reproductive success. We suggest the K:M mixture used is a safe and reliable method for anesthetizing raccoons in field conditions.

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Section: Introductionmentioning

confidence: 99%

Chemical Immobilization of Raccoons (Procyon Lotor) With Ketamine-Medetomidine Mixture and Reversal With Atipamezole

Robert

Garant

Pelletier

2012

Journal of Wildlife Diseases

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“…For example, death of radio-marked individuals shortly following capture may be rare for species with high intrinsic rates of survival or where capture methods are less invasive. In such cases accounting for capture effects on mortality may be unnecessary, although nonlethal effects of capture may also persist in these situations (e.g., Cattet et al 2008). In situations where radio-marked individuals do die within the first few weeks following capture, a systematic approach to detecting shifts in mortality offers an empirically justified tool to identify thresholds for censorship.…”

Section: Discussionmentioning

confidence: 99%

Detecting capture-related mortality in radio-marked birds following release

Blomberg¹,

Davis²,

Mangelinckx³

et al. 2018

ACE

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ABSTRACT. A fundamental assumption of avian survival analysis is that the act of capture, handling, and marking birds does not affect subsequent survival. This assumption is violated when animals experience injury, physiological stress, or disorientation during capture and handling that increases their mortality risk following release. Such capture-related effects must be accounted for during analysis, typically by censoring individuals from the survival history, to avoid biasing the resulting survival estimates. We reviewed studies of radio-marked upland game birds to characterize researcher approaches for addressing short-term effects of capture on survival, and used data from a study of Ruffed Grouse (Bonasa umbellus) to illustrate an empirical approach for evaluating such effects and identifying time thresholds to censor individuals that die shortly following release. A majority of studies (65%) reported using some form of censoring for mortality that occurred within one to three weeks after release, although only 8% of studies reported an empirical approach to identify a threshold for censorship. We found that Ruffed Grouse mortality was greater from one to six days following release when compared with 7 to 30 days. This threshold, and the proportion of birds censored as a result of it, is consistent with a number of previous studies of radio-marked Ruffed Grouse. We also found that short-term mortality of Ruffed Grouse following release was reduced by checking traps twice each day and by adequately concealing traps. We recommend that future studies of radio-marked birds employ empirical methods for detecting postrelease mortality thresholds, which will allow for reduced bias while minimizing unnecessary censorship of birds that die for reasons unrelated to capture.Détection de la mortalité attribuable à la capture chez des oiseaux marqués par radiotélémétrie RÉSUMÉ. L'analyse de la survie des oiseaux repose sur l'hypothèse de base voulant que l'acte de capturer, manipuler et marquer des oiseaux n'affecte pas leur survie subséquente. Cette hypothèse est violée lorsque les animaux subissent des blessures, un stress physiologique ou une désorientation pendant la capture et la manipulation, puisque leur risque de mortalité une fois relâchés augmente du coup. Ces effets imputables à la capture doivent être considérés au moment des analyses, en suivant habituellement l'histoire de survie des individus, afin que les estimations de la survie ne soient pas biaisées. Nous avons passé en revue des études réalisées sur des oiseaux terrestres considérés comme gibier afin de caractériser les approches utilisées par les chercheurs pour tenir compte des effets à court terme de la capture sur la survie. Nous avons également utilisé les données d'une étude sur la Gélinotte huppé (Bonasa umbellus) afin de présenter une approche empirique destinée à évaluer ces effets et à déterminer les seuils temporels où on devrait interrompre le suivi des individus qui meurent rapidement une fois relâchés. La majorité des études (65 %) ra...

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“…However, Cattet et al (2008) indicated that capture and handling affected the daily movement rates of collared grizzly bears (U. arctos) and American black bears for relatively long periods of time (≥ 1 month). Future studies should examine whether capture and handling affects the movement patterns of collared bears, promoting nocturnal and/or nuisance activity instead of inherent crepuscular or diurnal activity (Reimchen 1998;Pelton 2003).…”

Section: Discussionmentioning

confidence: 99%

“…Together with other investigations at nearby sites (Huygens and Hayashi 1999;Deguchi et al 2003), our approach using GPS technology may prove useful for developing management policies for nuisance black bears. However, our tracking period was brief, and bears must be collared in advance, especially if daily bear movement rates are evaluated more strictly (Cattet et al 2008). In future studies, simultaneous monitoring using GPS technology will be crucial for revealing social interactions among black bears.…”

Section: Discussionmentioning

confidence: 99%

A Note on Daily Movement Patterns of a Female Asiatic Black Bear (Ursus thibetanus) in a Suburban Area of Iwate Prefecture, Northeastern Japan

et al. 2009

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An Evaluation of Long-Term Capture Effects in Ursids: Implications for Wildlife Welfare and Research

Abstract: BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Cited by 191 publications

References 70 publications

Chemical Immobilization of Raccoons (Procyon Lotor) With Ketamine-Medetomidine Mixture and Reversal With Atipamezole

Chemical Immobilization of Raccoons (Procyon Lotor) With Ketamine-Medetomidine Mixture and Reversal With Atipamezole

Detecting capture-related mortality in radio-marked birds following release

A Note on Daily Movement Patterns of a Female Asiatic Black Bear (Ursus thibetanus) in a Suburban Area of Iwate Prefecture, Northeastern Japan

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