2011
DOI: 10.1644/10-mamm-a-262.1
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Seasonal body composition, water turnover, and field metabolic rates in porcupines (Erethizon dorsatum) in Alaska

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Cited by 13 publications
(8 citation statements)
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“…1). Porcupines are northern-adapted midsized mammals (3.5-9.0 kg) that range as far north as the arctic tundra (Coltrane et al 2011). The ability of porcupines to exploit northern habitats seems to be, in part, due to their unique adaptations to highly seasonal food availability.…”
Section: Introductionmentioning
confidence: 99%
“…1). Porcupines are northern-adapted midsized mammals (3.5-9.0 kg) that range as far north as the arctic tundra (Coltrane et al 2011). The ability of porcupines to exploit northern habitats seems to be, in part, due to their unique adaptations to highly seasonal food availability.…”
Section: Introductionmentioning
confidence: 99%
“…Regardless, porcupines in our study were on average larger than those found in the Catskills (Roze 2009). Male and female porcupines in our study area had average fall body masses of 10.62 ± 1.92 kg and 7.80 ± 1.68 kg, respectively (Coltrane et al 2011), compared to 5.53 kg and 4.59 kg for males and females, respectively, in the Catskill Mountains (Roze 2009). The longer winter experienced in Alaska relative to lower latitudes may require increased movements to exploit food resources within their home ranges.…”
Section: Discussionmentioning
confidence: 86%
“…Habitat selection in Alaskan porcupines in winter is therefore a tradeoff between nutritional and thermoregulatory challenges, as well as predation risks. As a result, free‐ranging porcupines lose up to 34% of total body mass at an average rate of 17 ± 6 g/day over an Alaskan winter (Coltrane et al 2011). Captive porcupines fed a diet of white spruce ( Picea glauca ) needles lost body mass at 49 ± 19 g/day (Coltrane and Barboza 2010), a loss rate that could not be sustained throughout the winter.…”
mentioning
confidence: 99%
“…), body composition (Coltrane et al. ; Pavlova et al. ), empirical regressions (Pauly ), and bioenergetics models (Kitchell et al.…”
Section: Introductionmentioning
confidence: 99%
“…Assessing an organism's ecological requirements and constraints is central to predicting species distributions (Elith and Leathwick 2009), community dynamics (Byrom et al 2014), and trophic interactions (Young et al 2015). Consumption is the most fundamental trophic interaction, and it can be calculated from diet analyses (Selch and Chipps 2007;Hughes et al 2014), body composition (Coltrane et al 2011;Pavlova et al 2014), empirical regressions (Pauly 1989), and bioenergetics models (Kitchell et al 1977;Hansen et al 1993). Bioenergetics models estimate consumption rates based on the energetic requirements for growth, metabolism, reproduction, and waste (Olson and Boggs 1986).…”
Section: Introductionmentioning
confidence: 99%