A TECHNIQUE FOR DEPLOYMENT OF RUMEN BOLUS TRANSMITTERS IN FREE-RANGING MOOSE (<i>ALCES ALCES</i>)

Minicucci, Larissa A; Carstensen, Michelle; Crouse, John A.; Arnemo, Jon M.; Evans, Alina L.

doi:10.1638/2017-0027r.1

Cited by 7 publications

(3 citation statements)

References 7 publications

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“…We immobilized moose by intramuscular hand injection with a mixture of 0.45 mg Carfentanil citrate (3 mg/mL; ZooPharm, Windsor, CO, USA) and 25 mg Xylazine HCl (100 mg/mL; Lloyd Laboratories, Shenandoah, IA, USA), and reversed with 400 mg Tolazoline HCl (100 mg intravenous, 300 mg intramuscular; 200 mg/mL; ZooPharm), and 100 mg Naltrexone HCl (intramuscular; 50 mg/mL; ZooPharm). Following administration of Tolazoline HCl, and prior to full reversal with Naltrexone HCl, we waited until consistent swallowing was observed, and then placed the MIT at the base of the tongue with a V‐grip applicator (Genesis Industries, Elmwood, WI, USA) to allow for natural swallowing of the MIT into the rumen (Minicucci et al ). We fitted each moose with a Global Positioning System (GPS) collar (GPS Plus Iridium; mass = 1,100 g; Vectronic Aerospace GmbH; Berlin, Germany).…”

Section: Methodsmentioning

confidence: 99%

Calibration of a rumen bolus to measure continuous internal body temperature in moose

et al. 2018

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Mortality implant transmitters (MITs), a device that can record continuous rumen temperature, have been deployed in wild moose (Alces alces) in Minnesota, USA, to understand physiological and behavioral responses of moose to increasing ambient temperatures. We compared temperatures collected using MITs to temperatures collected using vaginal implant transmitters (VITs) in 8 captive female moose (>2 yr old) at the Kenai Moose Research Center in Alaska, USA, during 2015. Both devices collected continuous body temperature measurements at 5-min intervals for 1 year. We directly observed moose behavior for 384 hr during 4 2-week windows distributed seasonally within the sampling period, to assess potential effects of behavior on MIT-recorded temperatures. We documented a decrease in MIT-recorded temperatures following water intake and developed an approach for censoring these observations. After removing these observations, MIT-based temperatures were, on average, 0.038 C (95% CI ¼ À0.57-0.558 C;x ¼ 38.148 C) lower than VIT-based temperatures ( x ¼ 38.178 C; n ¼ 760,439). We fit linear mixed-effects models to test the relationship between MIT and VIT-based temperatures across seasons and individuals. On average, the difference between predicted and observed temperatures was 0.058 C (95% PI ¼ À0.19-0.298 C) and 0.338 C (95% PI ¼ 0.01-0.638 C) for winter and summer seasons, respectively. We conclude that minimally invasive MITs can accurately record internal body temperature in moose, and thus provide a tool for understanding physiological and behavioral responses of moose to environmental stressors. Ó 2018 The Wildlife Society.

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Section: Methodsmentioning

confidence: 99%

Calibration of a rumen bolus to measure continuous internal body temperature in moose

et al. 2018

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“…After surgical implantation, we reversed the effects of xylazine with 5 mg atipamezole (Antisedan R 5 mg/mL, Orion Pharma Animal Health, Turku, Finland) injected intramuscularly or intravenously, to inhibit a swallowing reflex. We deployed MIT as previously described (Minicucci et al, 2018), before we reversed the immobilization with 50 mg naltrexone (Naltrexonhydroklorid vet. APL 50 mg/mL; Apotek Produktion och Laboratorier, Kungens Kurva, Sweden) intramuscularly or intravenously.…”

Section: Immobilization Proceduresmentioning

confidence: 99%

Seasonal Hypometabolism in Female Moose

et al. 2020

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How animals respond to a changing environment is a key question in ecological research. Animals living at higher latitudes are exposed to pronounced seasonal differences in both climate and in resource availability. Endotherms living in those environments have the ability to maintain a constant high body temperature (T b), over a wide range of ambient temperatures (T a). Nonetheless, many endotherms display seasonal shifts in metabolic rate (MR). Here, we studied the annual and circadian cycle of T b and heart rate (HR) in female moose (Alces alces) in relation to activity and T a. HR also can be used as a proxy of MR to calculate energy budgets. We deployed biologgers to 12 free-ranging female moose; a temperature sensor in the rumen, a HR logger subcutaneously, and a GPS collar equipped with acceleration and T a sensors. We documented seasonal differences in T b , HR and activity of moose, with lower levels during winter and higher values during summer. The highest daily mean T b and HR were 38.64 • C (10 July) and 71.9 beats per minute (bpm; 26 June), whereas the lowest daily mean T b and HR were 38.03 • C (17 March) and 40.5 bpm (6 March). High-resolution T b and activity data allowed us to detect circadian and ultradian rhythmicity throughout the year. Based on previous calibration studies, MR decreased by 60% from the highest to the lowest point. Our results demonstrate hypometabolism including lower T b and HR during winter as a strategy to reduce energy expenditure during periods with colder climate and limited availability of resources.

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“…In February 2015, eight adult female moose (Alces alces) inÖland, Sweden (56843 0 N 16839 0 E) were fitted with global positioning system (GPS) collars, collar thermometers, and rumen temperature loggers with a mortality detector (Vectronic Aerospace GmbH, Berlin, Germany). The capture and device deployment were as previously described (Evans et al 2012;Minicucci et al 2018). Rumen temperature (T r ), collar temperature (T c ), and GPS locations were recorded at 15-min intervals.…”

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confidence: 99%