Abstract
I estimated abundance of several age groups of yellowfin tuna exploited in the Tropical Western Pacific Ocean during 1952 through 1960 on the basis of the hooking-rate and the age composition of the fish. It was found that the increase of hooking-rate in the three successive periods corresponds to occurrence of three dominant year classes as follows. ??
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have