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Page count: 14

This paper provides a preliminary analysis on the potential use of cannery receipt data for estimating species composition in the USA western Pacific purse seine fishery. Total tuna catches recorded on logsheets by year were very close (0.5% more in 2014 and 2.8% more in 2015) to those shown by cannery receipts indicating that vessel operators accurately record total catches on daily logsheets. Species composition differed with cannery receipts having a lower percentage of skipjack and higher percentages of both yellowfin and bigeye tuna than reported on logsheets. Cannery data provide catch by species and size categories, and annual trends are illustrated for 2014 and 2015 for size categories of