Effects of Radio Packages on Wild Ducks

Gilmer, David S.; Ball, I. J.; Cowardin, Lewis M.; Riechmann, John H.

doi:10.2307/3800730

Cited by 62 publications

(22 citation statements)

References 4 publications

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“…To our knowledge, however, this method has not been utilized in studies of vaccination campaigns. Radiomarking can have detrimental effects on the body mass or survival rates of birds and mammals due to the uncomfortable or inappropriate design of the attached radiotransmitter (Gilmer et al 1974, Gil 1999, Swenson et al 1999 or to the excessive ratio of radiotransmitter mass to animal mass (Cypher 1997). In our study, this mass ratio was low.…”

Section: Discussionmentioning

confidence: 63%

Short-Term Negative Effects of Vaccination Campaigns Against Myxomatosis and Viral Hemorrhagic Disease (Vhd) on the Survival of European Wild Rabbits

Calvete

Estrada

Osácar

et al. 2004

Journal of Wildlife Management

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The capture and handling of live European wild rabbits (Oryctolagus cuniculus) are unavoidable initial steps for immunization by vaccination against viral hemorrhagic disease (VHD) and myxomatosis as a management tool aimed at enhancing wild rabbit populations. We investigated the short‐term effects of vaccination campaigns against VHD and myxomatosis on the survival of 206 European wild rabbits in a Spanish population. While no effect was observed on the survival of adult rabbits, young and subadult rabbits (P < 0.001) had higher mortality rates during the first week after handling than in the subsequent 3 weeks. The hazard rate of death from disease was inversely correlated with body condition (P < 0.001) during the first week. Vaccination increased the hazard rate of death due to disease during the first 7 days post‐handling, although this detrimental effect was higher in young rabbits (P = 0.012) and modulated by body condition (P = 0.004). The hazard rate of dying from predation during the first week was higher for males than females (P = 0.023) and in subadults compared to young rabbits (P = 0.004). Body condition was inversely related to the predation hazard rate (P = 0.002). Our results suggest that vaccination campaigns had a short‐term negative impact caused by the stress of handling in addition to the detrimental effects of vaccination against VHD and myxomatosis. Future studies should consider this negative impact to assess the true efficacy of vaccination campaigns in wild populations.

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Section: Discussionmentioning

confidence: 63%

Short-Term Negative Effects of Vaccination Campaigns Against Myxomatosis and Viral Hemorrhagic Disease (Vhd) on the Survival of European Wild Rabbits

Calvete

Estrada

Osácar

et al. 2004

Journal of Wildlife Management

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“…Location, behavior, and resource use of wild birds have been monitored using sensors since the early 1970s, with harnesses used as the primary method of attaching the sensor to the birds (Greenwood and Sargeant, 1973;Gilmer et al, 1974). However, wearing a harness may alter birds' physicality by altering their balance or restricting wing movement, which may cause birds to move or behave differently.…”

Section: Introductionmentioning

confidence: 99%

Noncaged laying hens remain unflappable while wearing body-mounted sensors: Levels of agonistic behaviors remain unchanged and resource use is not reduced after habituation

et al. 2012

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Unique markings or body-mounted sensors facilitate data collection from individuals in large groups of similar-looking conspecifics but may have unintended consequences on behavior. A wireless sensor attached to the back of laying hens via a harness has been developed to monitor space use and activity. Prior to collecting experimental data, effects of the sensor on resource use and social interactions were assessed. Four rooms of 135 hens each were weighed and 10 hens/room were randomly fitted with sensors at 11 wk of age (0 d). Instantaneous scan samples recorded the number of hens (SEN: sensor-wearing hen, and NON: hen without sensor) using resources (feeder, water, nest box, perch) every 5 min over 24 h on -5 d, -4 d, -2 d, -1 d, 1 d, 2 d, 4 d, 8 d, and 16 d. Logistic regression determined that SEN feeder use was less on 1 d and 2 d and more on 16 d than NON feeder use. The SEN water use was reduced only on 1 d. The SEN nest box use increased on 1 d, 2 d, and 16 d. The SEN perched more on 1 d, 2 d, and 4 d, and less on 8 d. Initial resource use was affected by wearing a sensor, but by 16 d, all resources were used similarly or more by SEN than NON. No difference in BW was observed on 17 d, suggesting that long-term resource use was not affected. No differences were observed among the number of agonistic observations -5 d, 8 d, and 16 d. With the exception of SEN hens acting as aggressors toward NON hens, agonistic interaction types occurred close to expected proportions. These factors indicate that hens habituate to wearing sensors within 2 wk.

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“…Older studies using neck collars with radio transmitters on various duck species (Wood Duck, Canvasback, Redhead Aythya americana) showed adverse effects on behaviour, survival and reproduction [31,54,79]. As can be expected for shorter-necked species, ducks with neck collars can get their lower mandible stuck in the collar, which leads to retarded behaviour and sometimes mortality [54,79].…”

Section: Neck Collarsmentioning

confidence: 99%

Reduction in adverse effects of tracking devices on waterfowl requires better measuring and reporting

Lameris

Kleyheeg

2017

Anim Biotelemetry

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Since the first studies in the mid-twentieth century, lightweight electronic tracking devices have been increasingly used to study waterfowl movements. With half a century of experience and growing sample sizes, it has become clear that the attachment of a tracking device can affect a bird's behaviour and fitness. This becomes problematic when it introduces uncertainty about whether the recorded data represent natural behaviour. Waterfowl may be particularly prone to tag effects, since many species are migratory and tracking devices can disrupt their waterproof plumage. The primary aim of this paper is to identify how tracking devices may affect waterfowl survival, migration and reproduction, and how better measuring and reporting of such effects can improve our understanding of the risks, providing a first step towards reducing their impact in future studies. We reviewed literature on electronic tracking of waterfowl to create an overview of currently recognized effects of harness-attached backpacks, implants, subcutaneous attachments and neck collars. Additionally, we analysed developments in the use of attachment methods, the weight of tracking devices relative to bird body mass, and the reporting rate of effects of tracking devices in 202 original tracking studies. We found that although the number of waterfowl tracking studies described in peer-reviewed literature has steeply increased over the past decades, reporting rates of potential effects have decreased from 65.0 to 26.5%. Meanwhile, the mean weight of the tracking devices relative to the bird's body mass remained stable around 2.0%. Major negative effects were reported in 17% of all studies and were found for all attachment methods. Overall, large differences exist in the occurrence and type of negative effects between species and studies, even if the same tracking methods were used. Inconsistent reporting of effects, lack of control groups to measure effects and incomplete descriptions of the methodology hamper the identification of factors contributing to these effects. To accomplish a reduction in adverse effects of tracking, it is necessary to improve the measuring and reporting of effects. We propose a framework for standardized reporting of methods in primary tracking studies and standardized protocols to measure effects of tracking devices on waterfowl.

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Effects of Radio Packages on Wild Ducks

Cited by 62 publications

References 4 publications

Short-Term Negative Effects of Vaccination Campaigns Against Myxomatosis and Viral Hemorrhagic Disease (Vhd) on the Survival of European Wild Rabbits

Short-Term Negative Effects of Vaccination Campaigns Against Myxomatosis and Viral Hemorrhagic Disease (Vhd) on the Survival of European Wild Rabbits

Noncaged laying hens remain unflappable while wearing body-mounted sensors: Levels of agonistic behaviors remain unchanged and resource use is not reduced after habituation

Reduction in adverse effects of tracking devices on waterfowl requires better measuring and reporting

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