Load Carrying and Maneuverability in an Insectivorous Bat: a Test of the 5% "Rule" of Radio-Telemetry

Aldridge, H. D. J. N.; Brigham, R. Mark

doi:10.2307/1381393

Cited by 465 publications

(246 citation statements)

References 11 publications

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“…The guidelines should consider the conservation status of the species and the criticality of the information proposed to be collected. Animals may experience negative effects due to collaring [52][53][54], though this issue is debatable [55,56]. So far mortality during immobilization and radio-collaring has been remarkably low in India.…”

Section: Permission and Animal Capture Issues In Indiamentioning

confidence: 99%

Three decades of wildlife radio telemetry in India: a review

et al. 2014

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From 1983, there have been three decades of the application and development of radio telemetry for wildlife studies in India. In this article, we review 82 studies from India, covering 47 species from four taxonomic classes. We examine and discuss the trends in the selection of study species, habitats and objectives of radio-telemetry studies and the functional success of radio collars and tags. A strong bias for study species and study region is observed and researchers generally tend not to look beyond the traditional research questions. Habitats that are difficult to access, such as the Trans-Himalayas, the Himalayas and north-eastern India, are overlooked. Most of the studies aimed to infer primary information only, such as home range, migration and movement patterns and habitat preference (53.7%, 47.6% and 28.1% studies, respectively). We expect these trends to change with time as the development of technology allows researchers to explore further. We investigated the tracking histories of 483 animals and the records of 496 radio collars or tags, but detailed information could be acquired for only 330 collars or tags. Of the collars, 49% malfunctioned before the end of their anticipated life due to a variety of reasons, early battery drainage being the prevalent cause. The performance of different technologies and collar manufacturers was also analysed but the small sample size was an issue for most of the cases. Argos-based collars and tags generally failed to record most of the locations precisely and failed to transmit them successfully. Issues with permissions and capturing animals for tagging, particular to India, are also discussed. A uniform and centralized system for granting permissions and guidelines for capturing and handling animals would be beneficial to future telemetry studies.

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Section: Permission and Animal Capture Issues In Indiamentioning

confidence: 99%

Three decades of wildlife radio telemetry in India: a review

et al. 2014

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“…Transmitter weight was kept under 5% of the animal body weight ranging in our study between 8.5 and 12 g (Aldridge and Brigham 1988). Signals were detected using the 'homing in' method (White and Garrott 1990) by means of a TR-4 receiver ARTICLE IN PRESS (Telonics, US) fitted either with a three-element Yagi antenna or with an omni-directional antenna fixed on a car roof.…”

Section: Capture and Monitoringmentioning

confidence: 99%

Roost and hunting site fidelity of female and juvenile Daubenton's bat Myotis daubentonii (Kuhl, 1817) (Chiroptera: Vespertilionidae)

Kapfer¹,

Rigot²,

Holsbeek³

et al. 2008

Mammalian Biology

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We investigated roosting and hunting site fidelity of Daubenton's bats Myotis daubentonii (Kuhl, 1817) Roosting behaviour and hunting activity over ponds of adult females and juveniles were monitored using radiotelemetry. Eighteen roosts were located, all in natural cavities. The bats occupied a limited number of trees located in a specific and small roosting area. This roost aggregation was not linked to the distribution of hollow trees. Furthermore, whereas all 11 ponds in the study area were exploited by Daubenton's bats, monitored individuals were limited to two ponds to which they showed high fidelity. These two ponds were not the closest to the roosting area. Overall, these results show that at least for the time we conducted our experiment, female and juvenile Daubenton's bats are highly faithful to specific roosting and hunting grounds.

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“…To immobilize the trapped bear, a mixture of ketamine hydrochloride (4.6 mg/kg) and medetomidine hydrochlo- ride (46.3 μg/kg) was used to anesthetize the bear, and hydrochloric atipamezole (231.5 μg/kg) was used as an antagonist. A GPS collar equipped with an activity sensor and drop-off device (285 g; GPS_3300S; Lotek Wireless Inc., Ontario, Canada), which totaled less than 5% of the animal's body weight (see Aldridge and Brigham 1988), was fitted on the bear. The bear was marked with a numbered plastic tag, and its age was roughly categorized as yearling or adult based on body condition (Tsujimoto, T. personal communication).…”

Section: Methodsmentioning

confidence: 99%