Certification is not always viable, and other governance mechanisms may be more practical for small producers. Nonetheless, there remains room to improve many socio-economic and environmental aspects found in the small producer sector. For these reasons it is worth considering if separate VietG.A.P. Guidelines for small producers could make sense11. Small producers face higher transaction costs, reduced marketing capacities,

and limited access to efficient production technology; additionally, they face real sustainability challenges (i.e., use of wild feed and seed, misuse of chemicals). Any small producer standard should reflect the sustainability challenges facing small producers,

and provide sustainability requirements with which small producers can work towards. While taking on a less rigorous approach may be viewed as undermining Olaparib molecular weight the goal of sustainable aquaculture practices, the inclusion of more small producers holds the potential to increase the overall sustainability of the sector, and therefore, is an important starting point. This Navitoclax cost is consistent with Jonell et al. [13] who argue that excluding small producers could limit the benefits of certification, particularly in light of the number of small producers found in Southeast Asia. Key to a modified VietG.A.P. for small producers12 is determining eligibility. Eligibility needs to be determined before developing a small producer standard, and should address factors pertaining to pond size (surface area), production intensity (volumes produced), species mix (certifying monoculture and polyculture, see footnote

12), and the number of labourers on any given farm. These aspects are key determinants of what it means to be a small producer. And, while the notion of small producer typically varies from region to region, and across species, the Vietnamese government׳s definition for small producer shrimp farmers is a good starting point (a shrimp farmer is considered to be Chlormezanone small-scale if they operate less than two hectares of ponds using limited inputs or less than one hectare if using inputs more intensively) [22], although this definition is likely to evolve over time. Table 5 suggests prioritized requirements across social, environmental, economic and management dimensions. These prioritized requirements would enable farmers to work towards sustainability, and when compliance is achieved, could then expand to include more rigorous requirements through a phased in approach. While the key issues covered in GLOBALG.A.P., ShAD and VietG.A.P listed in Table 2 include a number of requirements to measure performance against a specific sustainability theme, the categories in Table 5 involve only one specific requirement.