List of frequency studies for Trachurus symmetricus
Locality Year
from - to
Sex Gear Frequency type
CFG Offshore cruises (night and light), USA 1957 - 1968 unsexed/mixed  hooks and lines  % of sample 
not specified, USA 1977 - 1977 unsexed/mixed  trawls  % of sample 
Southern California, USA 1967 - 1972 unsexed/mixed  seines  % of sample 
Southern California, USA 1947 - 1953 unsexed/mixed  seines  % of sample 
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