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The effects of satiation on strike mode and prey capture kinematics in the largemouth bass, Micropterus salmoides

SASS, Greg G ; MOTTA, Philip J

Environmental biology of fishes, 2002-12, Vol.65 (4), p.441-454 [Periódico revisado por pares]

Dordrecht: Springer

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  • Título:
    The effects of satiation on strike mode and prey capture kinematics in the largemouth bass, Micropterus salmoides
  • Autor: SASS, Greg G ; MOTTA, Philip J
  • Assuntos: Agnatha and pisces ; Animal behavior ; Animal ethology ; Bass ; Biological and medical sciences ; Freshwater ; Fundamental and applied biological sciences. Psychology ; Micropterus salmoides ; Psychology. Psychoanalysis. Psychiatry ; Vertebrata
  • É parte de: Environmental biology of fishes, 2002-12, Vol.65 (4), p.441-454
  • Notas: ObjectType-Article-2
    SourceType-Scholarly Journals-1
    ObjectType-Feature-1
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  • Descrição: The feeding mechanism and kinematics of prey capture have been studied in many fishes. However, the effects of satiation on the strike mode and prey capture kinematics have never been directly measured. We analyze 12 kinematic variables to determine the effects of satiation on prey capture in five largemouth bass, Micropterus salmoides, by using high speed videography. We also present the first experimental test for modulatory capabilities in response to satiation, by using the ram-suction index. Significant changes in the kinematic variables of maximum lower jaw depression, maximum gape distance, maximum hyoid depression, time to maximum hyoid depression, and time from maximum hyoid depression to recovery were seen with the effects of satiation. Change in the kinematic variables imply a decrease in jaw opening velocity and the magnitude of suction velocity created during repetitive strikes by M. salmoides with increasing satiation. The bass primarily uses a ram strike mode, with some suction bites occasionally. Ram-suction index analyses suggests that M. salmoides does not modulate strike mode in response to satiation. However, the bass modulate prey capture kinematics without altering strike mode with the effects of satiation. Prey capture success decreases in each bass, as the probability of a successful prey capture event becomes lower, with increasing satiation. These findings demonstrate that satiation can have major effects on prey capture kinematics and future studies of feeding kinematics should account for satiation in their analyses.[PUBLICATION ABSTRACT]
  • Editor: Dordrecht: Springer
  • Idioma: Inglês
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