Implementation of a simulation model for the study of temporal evolution of the parasite loads produced by "Caligus rogercresseyi" in the salmon ongrowing sites at Chile's fjords and channels

Abstract

The Caligidosis, the infection produced by the sea lice (Caligus rogercresseyi), ,was declared a high-risk disease during the year 2007 in Chile, due to the resistance of the parasite to the treatments used until then. Nowadays, to treat this disease, the ongrowing sices with a parasicical load equal o higher than 9 adults per fish are bathed with pyrechroids following Chile's govermental prococol ,which generates senstcive econonmical losses to the companies and a significant impact on the ecosystem. For this reason, it ,was decided to adjust the mathematical larval dispersion model by Revie et al. (2005) for Lepeophrheirus salmonis from the Scottish coasts, to the biology of C . rogercresseyi adapced as a metapopulation model ,wich the objective of describing the propagation process between ongrowing sites, and to propose efficient treatment strategies.