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The Impact of Sea Lice Treatments on the Unit Production Costs of Salmon Growth Centers: Evidence from Chilean Aquaculture

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Abstract
  • Proceedings of the 2017 Forum of the North American Association of Fisheries Economists, held March 22-24, 2017 in La Paz, Baja California Sur, Mexico.
  • We measured the impact that sanitary treatments aiming to reduce the abundance of sea lice Caligus rogercresseyi have on the unit production costs of Atlantic salmon fattening centers in southern Chile. We make use of a unique data set that allows us to follow complete production cycles for a sample of centers between 2009 and 2015. We estimate a salmon biomass growth and a sea lice determination model, which later are complemented with outside cost information on treatments, such as bath treatment costs, medication costs, and operational costs associated with the treatments. In this setting, we control for endogeneity bias and truncation in the sea lice data. The statistical analysis determines the effect of different treatments on the salmon growth profile. The model also allows identifying the effect that factors such as center location, environmental conditions, sea lice abundance in the area, have on salmon growth. We simulate how unit production costs vary with different treatments and center characteristics, and estimate the impact of treatments costs on unit production costs. Our results indicate that lice generate an important increase in unit costs, basically because its negative impact on the salmon production cycle and that sea lice treatments in the form of chemical baths, although expensive, do reduce unit production costs. However, the cost effect of treatments is positive and significant as compared with a scenario without sea lice.
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  • NAAFE Forum 2017 Proceedings, March 22-24, 2017. Compiled by Ann L. Shriver with assistance from Stefani Evers. North American Association of Fisheries Economists (NAAFE), Corvallis, 2017.
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  • La Paz, Baja California Sur, Mexico
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ISBN
  • 097634324X

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