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- W2062305997 abstract "The mechanics of feeding in Salmo gairdneri and Hoplias malabaricus, two generalized predaceous teleosts, was studied using high-speed movies (200 frames per second). In Hoplias, the feeding mechanism is characterized by an extreme anterior swing of the maxilla and rapid depression of the hyoid occurring synchronously with mandibular depression and neurocranial elevation. A similar feeding sequence is observed in Salmo although the movements of the head are neither as extreme nor as rapid. The anterior swing of the maxilla, usually attributed to mandibular depression, increased when the ligamentous connection of the maxilla to the mandible was severed. A mechanical model of the jaw was constructed to elucidate the functional interrelationships of the neurocranium, maxilla and mandible. Films of the “holostean”Amia calva feeding show that the feeding mechanism is of a fundamentally different nature than that of primitive teleost fishes. Extreme anterior swinging of the maxilla occurs synchronously with jaw opening but branchiostegal expansion and hyoid depression only reach a maximum well after the jaws have begun to close. The existence of a highly efficient levator operculi—opercular series—mandible coupling is hypothesized on the basis of the rapid initial jaw opening. This pattern of feeding movements in Amia has necessitated a revision of current theories on the nature and significance of the “holostean”" @default.
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- W2062305997 date "1979-04-01" @default.
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- W2062305997 title "Feeding mechanics in primitive teleosts and in the halecomorph fish <i>Amia calva</i>" @default.
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- W2062305997 doi "https://doi.org/10.1111/j.1469-7998.1979.tb03386.x" @default.
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