Why bears consume mixed diets during fruit abundance

By K. Rode, Charles T. Robbins. 2000

154 citations recorded by the source corpus.

View Paper: https://www.semanticscholar.org/paper/33bef0b3a849007d40aad13b88348e1fb921359e

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Citations in the corpus

Dynamic wildlife habitat models: Seasonal foods and mortality risk predict occupancy-abundance and habitat selection in grizzly bears (2010, background): “Bears attempt to balance intake of foods high in protein with foods high in energy (Rode and Robbins, 2000; Rode et al., 2001; Felicetti et al., 2003), which contributes to their selection of productive heterogeneous landscapes and edge (Hamer and Herrero, 1987; Robbins et al., 2004; Nielsen et…”
Carnivory is Positively Correlated with Latitude among Omnivorous Mammals: Evidence from Brown Bears, Badgers and Pine Martens (2009, background): “In autumn, bears largely consumed carbohydrate-rich plants, such as cereals (mainly oats), berries and apples, but few animal-food items, in order to effectively accumulate fat reserves before hibernation (Rode & Robbins 2000).”
Nutritional Correlates of Population Density Across Habitats and Logging Intensities in Redtail Monkeys (Cercopithecus ascanius) 1 (2006, background): “Very few mammals, birds, or bats consume a diet composed entirely of fruit even during periods of seasonal abundance due to these associated deficiencies (Rode & Robbins 2000).”
Do bears know they are being hunted (2012, background): “During hyperphagia most bear populations rely on soft and/or hard mast, e.g. berries and nuts, both in North America and Eurasia (e.g. Rode and Robbins, 2000; Sato et al., 2005; Naves et al., 2006).”
Black bear adaptation to low productivity in the boreal forest (2008, background): “As suggested for both the hibernating primate Cheirogaleus medius (Fietz & Ganzhorn, 1999) and bears (Rode & Robbins, 2000), excess energy from the consumption of a large quantity of fruit could be deposited as fat before hibernation in the absence of fatty mast.”
Macronutrient optimization and energy maximization determine diets of brown bears (2014, background): “…characteris- tics of foods as well as their gustatory or olfactory appeal may w w w . m a m m a l o g y . o r g 160 Downloaded from https://academic.oup.com/jmammal/article-abstract/95/1/160/922646 by guest on 27 July 2018 guide dietary mixing in bears (Rode and Robbins 2000; Robbins et al. 2007).”
Implications of a high-energy and low-protein diet on the body composition, fitness, and competitive abilities of black (Ursus americanus) and grizzly (Ursus arctos) bears (2011, background): “Diet and seasonal changes in body composition and condition The relationship between the protein content of the bear’s diet and the digestible energy required for maintenance or growth is complex and nonlinear (Rode and Robbins 2000; Robbins et al. 2007).”
Are you what you eat? Physiological constraints on organismal stoichiometry in an elementally imbalanced world (2005, unknown): “…mixing of heterogeneous food sources may also increase the acquisition of the limiting nutrient, as has been observed for vertebrates (Izhaki and Safrel 1989, Rode and Robbins 2000), crustaceans (DeMott 1998, Acharya et al. 2004), and insects (Denno and Fagan 2003, Raubenheimer and Simpson 2003).”
Habitat selection by black bears in an intensively logged boreal forest (2008, background): “Above all, the efficiency of energy intake in a fruit diet can be two to three times lower when in an environment poor in vegetal fats and proteins (Rode and Robbins 2000).”
Optimizing protein intake as a foraging strategy to maximize mass gain in an omnivore (2007, methodology): “In contrast, many fruits are rich in carbohydrates, low to deficient in protein, and deficient to adequate in required minerals and vitamins (Welch et al. 1997, Rode and Robbins 2000, Felicetti et al. 2003).”