“…Third, we estimate the economic impacts of apple maggot further spreading to appleproduction areas. I/O modeling is frequently used in economic impact analyses, including those related to agricultural commodities (e.g., Armah et al, 2016;Collart et al, 2015;Mon and Holland, 2006) and pest or disease (e.g., Evans et al, 2010;Pendell et al, 2007;Zapata et al, 2016). Because of the model's underlying assumptions, such as fixed proportion of inputs and lack of supply-side constraints (Bess and Ambargis, 2011;Zhao et al, 2006), results tend to be high but can be used as an upper-bound estimate of impacts (Hughes, 2003;Rose and Liao, 2005).…”