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Comparative Study
. 2001 Oct 7;268(1480):1965-70.
doi: 10.1098/rspb.2001.1731.

Mutually exclusive muscle designs: the power output of the locomotory and sonic muscles of the oyster toadfish (Opsanus tau)

Affiliations
Comparative Study

Mutually exclusive muscle designs: the power output of the locomotory and sonic muscles of the oyster toadfish (Opsanus tau)

I S Young et al. Proc Biol Sci. .

Abstract

Animals perform a vast array of motor activities. Although it has generally been accepted that muscles are well suited to the function that they must perform, specialization for performing one function may compromise their ability for carrying out another. We examined this principle in the toadfish muscular system: slow-twitch red and fast-twitch white myotomal muscles are used for powering swimming at relatively low frequencies, while the superfast swimbladder muscle powers mating calls by contracting at 100 Hz. We measured muscle power output over a wide range of frequencies. The red and white locomotory muscles could not generate power over ca. 2.2 and 12 Hz, respectively and, hence, could not power sound production. In contrast, the swimbladder muscle has many specializations that permit it to generate power at frequencies in excess of 100 Hz. However, these specializations drastically reduce its power output at low frequencies: the swimbladder muscle generated only one-twentieth of the power of the red muscle and one-seventh of the power of the white muscle at the frequencies used during swimming. To generate the same total power needed for swimming would require unfeasibly large amounts of swimbladder muscle that could not fit into the fish. Hence, the designs of the swimbladder and locomotory muscles are mutually exclusive.

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References

    1. Pflugers Arch. 1996 Sep;432(5):767-74 - PubMed
    1. Proc Natl Acad Sci U S A. 1996 Jul 23;93(15):8095-100 - PubMed
    1. Proc Natl Acad Sci U S A. 1999 May 11;96(10):5826-31 - PubMed
    1. Proc R Soc Lond B Biol Sci. 1964 Jan 14;159:319-24 - PubMed
    1. J Muscle Res Cell Motil. 1991 Dec;12(6):543-52 - PubMed

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