Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8696443 | Archives of Oral Biology | 2018 | 6 Pages |
Abstract
The identification of MyHC α-cardiac in the jaw adductors of sooty mangabeys is a novel finding for nonhuman primates. The abundance of MyHC α-cardiac indicates a fatigue-resistant fiber population characterized by intermediate speed of contraction between pure MyHC-1 and MyHC-2 isoforms. We suggest that α-cardiac fibers may be advantageous to sooty mangabeys, whose feeding behavior includes frequent crushing of relatively large, hard seeds during the power stroke of ingestion. Additional studies comparing jaw-adductor fiber phenotype of hard-object feeding primates and other mammals are needed to explore this relationship further.
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Authors
Christine E. Wall, Megan Holmes, Erik J. Soderblom, Andrea B. Taylor,