Sharks of the genus Carcharhinus associated with the tuna fishery in the eastern tropical Pacific Ocean

The U.S. tuna fishery in the eastern tropical Pacific Ocean is principally a purse seine operation. Typical vessels have a capacity of 120 to 500 tons of tuna, and the fishery ranges from Southern California to northern Chili and offshore several hundred miles. The objectives of this study are (1) to determine whether shark damage to nets and catch can be reduced, (2) determine the population structure of the species involved, (3) increase our knowledge of the life histories of the pelagic sharks, and (4) compile a check list of the pelagic sharks found in the area of study. Circulars.