Comparative Chewing Efficiency in Mammalian Herbivores

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Comparative Chewing Efficiency in Mammalian Herbivores

Show simple item record Nunn, Charles Lindsay Fritz, Julia Hummel, Jürgen Kienzle, Ellen Arnold, Christian Clauss, Marcus 2010-08-11T15:53:41Z 2009
dc.identifier.citation Fritz, Julia, Jürgen Hummel, Ellen Kienzle, Christian Arnold, Charles Lindsay Nunn, and Marcus Clauss. 2009. Comparative chewing efficiency in mammalian herbivores. Oikos 118(11): 1623-1632. en_US
dc.identifier.issn 0030-1299 en_US
dc.description.abstract Although the relevance of particle size reduction in herbivore digestion is widely appreciated, few studies have investigated digesta particle size across species in relation to body mass or digestive strategy. We investigated faecal particle size, which reflects the size of ingesta particles after both mastication and specialized processes such as rumination. Particle size was measured by wet sieving samples from more than 700 captive individuals representing 193 mammalian species. Using phylogenetic generalized least squares, faecal particle size scaled to body mass with an exponent of 0.22 (95% confidence interval: 0.16–0.28). In comparisons among different digestive strategies, we found that (1) equids had smaller faecal particles than other hindgut fermenters, (2) non-ruminant foregut fermenters and hindgut fermenters had similar-sized faecal particles (not significantly different), and (3) ruminants had finer faecal particles than non-ruminants. These results confirm that the relationship between chewing efficiency and body mass is modified by morphological adaptations in dental design and physiological adaptations to chewing, such as rumination. This allometric relationship should be considered when investigating the effect of body size on digestive physiology, and digestion studies should include a measure of faecal particle size. en_US
dc.description.sponsorship Human Evolutionary Biology en_US
dc.language.iso en_US en_US
dc.publisher Nordic Ecological Society en_US
dc.relation.isversionof doi:10.1111/j.1600-0706.2009.17807.x en_US
dc.relation.hasversion en_US
dash.license LAA
dc.title Comparative Chewing Efficiency in Mammalian Herbivores en_US
dc.type Journal Article en_US
dc.description.version Version of Record en_US
dc.relation.journal Oikos -Copenhagen- en_US Nunn, Charles Lindsay 2010-08-11T15:53:41Z

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