tailieunhanh - Modeling and simulation of shrimp diseases propagation in river networks and inside pond

In this paper we study and apply modeling on agent-based simulation for simulating the mechanism of shrimp infection inside shrimp-ponds and on the river networks in the region of Mekong Delta, Vietnam. The disease-propagation rules were established based on the way that the pathogens multiply in water-flows together with other infecting agents such as aquatic or migrating living things. | Journal of Science and Technology Volume 48, Issue 4, 2010 pp. 62-72 MODELING AND SIMULATION OF SHRIMP DISEASES PROPAGATION IN RIVER NETWORKS AND INSIDE POND TUYEN T. T. TRUONG, HIEP X. HUYNH, AND ALEXIS DROGOUL ABSTRACT In this paper we study and apply modeling on agent-based simulation for simulating the mechanism of shrimp infection inside shrimp-ponds and on the river networks in the region of Mekong Delta, Vietnam. The disease-propagation rules were established based on the way that the pathogens multiply in water-flows together with other infecting agents such as aquatic or migrating living things. Inside a shrimp-pond, besides the factors mentioned above, the infecting mechanism also depends on the density of shrimps and the initial number of the pathogens. In this study, we constructed two on-river-infecting scenarios for cases of the occurrence or nonoccurrence of the pathogens and two inside one shrimp-pond infecting scenarios. All of the results are written in GAML and executed on GAMA platform. Keywords. modeling, agent-based simulation, mechanism of disease-propagation, GAMA platform. 1. INTRODUCTION With good geographical location and natural conditions, shrimp hatching in Mekong Delta are grown rapidly and provides a lot of sea-products in Vietnam as well as in foreign countries. Besides the increase in farming area, the growing level of shrimps’ diseases is also spread quickly based on the polluted water, flow of water and healthy status of shrimps. According to the aquaculture experts, there is no treatment to cure the shrimp-diseases caused by virus especially White Spot Syndrome Virus (WSSV) [3, 8, 9]. As a result, farmers need to protect their shrimps and prevent propagation of diseases from ponds to ponds and inside shrimp pond as well [5]. The propagation of shrimp-diseases based on many features such as flow and speed of water in the rivers, salt level, pH level, high level of water, the status of pond, the movement of birds, crabs, .