Yellowfin broodstock: capture and transport

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Since early 1996, yellowfin have been caught in waters close to Achotines Bay, using rod and reel or hand lines, and transported to the Laboratory in tanks aboard skiffs.   Prior to stocking in the laboratory tanks, the fish are measured, weighed, tagged with a microchip implant tag in the dorsal musculature, and injected with oxytetracycline (OTC).  The tag allows each fish to be identified throughout its life in captivity, and injection with OTC establishes a temporal mark in the otoliths and vertebrae useful for studies of the growth of the fish.

Hand lines and rod and reel are used to capture yellowfin tuna

Yellowfin tuna caught with barbless hooks at sea are lifted aboard for transfer to the Laborato