Temporal Variation in the Utilization of an Intertidal Creek by the Bay Anchovy (Anchoa mitchilli )

  • Reis R
  • Dean J
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A brackish-water, intertidal creek was sampled 19 times during the summer of 1976. Samples were analyzed to determine occurrence, abundance, and diversity of fish species present and to determine patterns ofdaily fish movement and utilization of intertidal creeks in an old rice field. The data from the nineteen sample collections were orderedby time of day and the resultant time series sequence of collectionssimulated a sample collection taken about once every 1.5 hours over 24 hours. A pattern of occurrence was noted for A. mitchilli as increased fish numbers occurred when the creek flooded during the daylight hours and there were significantly reduced numbers when the creek flooded during the early evening or at night. A relationship between light intensity, feeding, and predator avoidance is proposed to explain the creek loading pattern of A. mitchilli .

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  • R R Reis

  • J M Dean

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