Duronsley MJLyon JMMarullo FTransactions of the American Fisheries Society2010-02-152010-02-151972http://hdl.handle.net/1969.3/23169748-752Knowledge of the vertical distribution of post-larval penaeid shrimps during migration through tidal passes would be of use in the development of accurate and efficient sampling techniques. Consequently, the white and brown shrimp population was studied at two stations (A and B, A being deeper water) at the main entrance to Galveston Bay, Texas. Five sampling nets were lowered to predetermined depths for one hour during flood tide at the two stations, 104 sets of samples were collected. During the day the greatest catches of brown shrimps were collected in the middle three nets of station A, but at night there were significantly more post-larval shrimps in the second net down. The white shrimps were most abundant in the second and third nets down during the day but more abundant at the surface at night. No significant results were obtained at station BDevelopmentDistributionGalveston BayImmigrationmigrationPenaeusPenaeus aztecusQ1 01421 Migrations and rhythmsQ1 01425 Nutrition and feeding habitsSamplingTexasUSAusevertical distributionwaterWhite shrimpJournal