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Pubmed for Handhelds

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  • Title: Lateralization of pectoral stridulation sound production in the channel catfish.
    Author: Fine ML, McElroy D, Rafi J, King CB, Loesser KE, Newton S.
    Journal: Physiol Behav; 1996 Sep; 60(3):753-7. PubMed ID: 8873247.
    Abstract:
    Sounds of the channel catfish Ictalurus punctatus were found to consist of a rapid series of pulses produced by rubbing a ridged process on the first pectoral spine against the rough surface of a groove in the pectoral girdle during fin abduction. Although sounds can be made with either fin, approximately half of the individuals exhibited a fin preference, and 90% of these preferred the right fin. Unlike examples of handedness in other invertebrates and fishes, this preference is not simply a matter of anatomical asymmetry, but as in humans, reflects a preference between two equally developed limbs.
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