2019-03-242019-03-241992NAGA 15 (1): 29-30https://hdl.handle.net/20.500.12348/2980Some problems associated with fitting surplus production models to unsuitable data are discussed. This is illustrated by an application of the Schaefer, Fox and PRODFIT models to Pacific Ocean bigeye tuna (Thunnus obesus ) catch and effort data for 1952-1987, which appear to be better described by purely empirical models.application/pdfCC BY 4.0Journal Article