A stochastic simulation model of brown shrimp (Penaeus aztecus ives) growth, movement, and survival in Galveston Bay, Texas




George LC
Grant WE

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A stochastic simulation model of brown shrimp (P. aztecus Ives) population dynamics in Galveston Bay, Texas, is described, validated, and used to evaluate the effects of management alternatives and changing environmental conditions on shrimp dynamics. The model is composed of submodels representing: (1) recruitment, (2) growth, (3) natural mortality, (4) fishing mortality, and (5) emigration of brown shrimp. The model predicts significant changes in total annual harvest from the food shrimp, bait and recreational fisheries resulting from (1) closure of the bay system to all fishing except during the spring and fall open seasons, (2) two-week postponement of the opening and closing of the open seasons for the food shrimp fishery. (3) a 2.5 degree C increase and (4) a 2.5 degree C decrease in mean water temperature, (5) and 80% increase and (6) an 80% decrease in fishing effort




ASW,USA,Texas,Galveston Bay, bait, C CA1.8.6 ECOLOGY, C CA15.4 OCEANOGRAPHY, C CS2.1.8 BIOLOGICAL SCIENCE AND ENGINEERING, Ecology, environmental conditions, Environmental effects, Fisheries, Fishery management, fishing, Galveston Bay, growth, management, mathematical models, models, Mortality, oceanography, P 1000 MARINE POLLUTION, Penaeus aztecus, population dynamics, Q1 01604 Stock assessment and management, recruitment, Resource management, Shrimp fisheries, simulation, spring, stochastic processes, Stock assessment, Survival, Temperature, Texas, USA, water, water temperature