Abstract：
:Feeding systems and behaviors must evolve to satisfy the metabolic needs of organisms. This includes modifications to feeding systems as body size and metabolic needs change. Using our own data and data from the literature, we examine how size-related changes in metabolic needs are met by size-related changes in daily feeding time, chew cycle duration, volume of food processed per chew, and daily food volume intake in primates. Increases in chew cycle duration with body mass in haplorhine primates are described by a simple power function (cycle time alpha body mass(0.181)). Daily feeding time increases with body mass when analyzed using raw data from the "tips" of the primate phylogenetic tree, but not when using phylogenetically independent contrasts. Whether or not daily feeding time remains constant or increases with body mass, isometry of ingested bite size and the slow rate of increase in chew cycle time with body size combine to allow daily ingested food volume to scale faster than predicted by metabolic rate. This positive allometry of daily ingested food volume may compensate for negative allometry of nutrient concentration in primate foods. Food material properties such as toughness and hardness have little impact on scaling of chew cycle durations, sequence durations, or numbers of chews in a sequence. Size-related changes in food processing abilities appear to accommodate size-related changes in food material properties, and primates may alter ingested bite sizes in order to minimize the impacts of food material properties on temporal variables such as chew cycle duration and chew sequence duration.
journal_name
J Hum Evoljournal_title
Journal of human evolutionauthors
Ross CF,Washington RL,Eckhardt A,Reed DA,Vogel ER,Dominy NJ,Machanda ZPdoi
10.1016/j.jhevol.2009.02.007subject
Has Abstractpub_date
2009-06-01 00:00:00pages
570-85issue
6eissn
0047-2484issn
1095-8606pii
S0047-2484(09)00053-0journal_volume
56pub_type
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journal_title：Journal of human evolution
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journal_title：Journal of human evolution
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journal_title：Journal of human evolution
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journal_title：Journal of human evolution
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journal_title：Journal of human evolution
pub_type： 杂志文章
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journal_title：Journal of human evolution
pub_type： 杂志文章
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journal_title：Journal of human evolution
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journal_title：Journal of human evolution
pub_type： 杂志文章
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pub_type： 历史文章,杂志文章
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journal_title：Journal of human evolution
pub_type： 杂志文章,评审
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更新日期：1998-10-01 00:00:00
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journal_title：Journal of human evolution
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doi：10.1016/j.jhevol.2007.01.005
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journal_title：Journal of human evolution
pub_type： 杂志文章
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pub_type： 杂志文章
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journal_title：Journal of human evolution
pub_type： 历史文章,杂志文章
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journal_title：Journal of human evolution
pub_type： 杂志文章
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journal_title：Journal of human evolution
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journal_title：Journal of human evolution
pub_type： 杂志文章
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journal_title：Journal of human evolution
pub_type： 历史文章,杂志文章
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journal_title：Journal of human evolution
pub_type： 杂志文章
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