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Variability In Estimating Abundance Of Postlarval Brown Shrimp, Farfantepenaeus Aztecus (Ives), Migrating Into Galveston Bay, Texas, Geoffrey A. Matthews

Gulf and Caribbean Research

Three sets of monitoring data were used to examine the variability associated with abundance estimation of postlarval brown shrimp, Farfantepenaeus aztecus (Ives) in Bolivar Roads, Texas—the main connection between the Gulf of Mexico and Galveston Bay. Abundance of postlarvae (PL) caught with Renfro beam trawl varied greatly in different years on the same dates. A “spring peak” of brown shrimp PL migrating into Galveston Bay was found for 2 April with a quadratic regression fit to 6-day moving averages of daily mean abundance from 22 yrs of monitoring data: Ln(PL+1) = 0.8736 + 0.09037Day - 0.0004934Day² (adj-R² = …