. Coast watch. Marine resources; Oceanography; Coastal zone management; Coastal ecology. 4^. TOP: Captain Snow's first mate, JeffJugan, delivers just-caught sea bass for the Fishery Resource Grant study. fPhoto by Kim Copeland) BOTTOM: Kim Copeland amid tlte recirculating system at the UNC-W Center for Marine Science facility at Wrights\>ille Beach. I Pimm courtesy UNC-W) Some, like the flounder used for broodstock, won't take pellets at all. They eat only fish called silversides that have been frozen, then thawed. The labor and processing involved in meeting the exacting requirements of su
. Coast watch. Marine resources; Oceanography; Coastal zone management; Coastal ecology. 4^. TOP: Captain Snow's first mate, JeffJugan, delivers just-caught sea bass for the Fishery Resource Grant study. fPhoto by Kim Copeland) BOTTOM: Kim Copeland amid tlte recirculating system at the UNC-W Center for Marine Science facility at Wrights\>ille Beach. I Pimm courtesy UNC-W) Some, like the flounder used for broodstock, won't take pellets at all. They eat only fish called silversides that have been frozen, then thawed. The labor and processing involved in meeting the exacting requirements of such picky eaters hikes up aquaculture costs. But the bass took to the commercial feed readily — a rare event "anytime you're taking fish from the wild and putting them in an artificial environment," Copeland says. And, attesting to their hardiness, Copeland explains that the mortality rate from the acclimated fish during the feeding study was zero. Even given some mortalities early on from transporting and holding, she says the statistics are impressive. A potential drawback for black sea bass aquaculture, says Watanabe, is the relatively slow growth rates in wild populations of this species, which can grow to seven pounds and 24 inches long. In the study, Watanabe says growth rates proved to be much faster than in the wild. So far, so good. But in order to be feasible for farm-rearing, the fish must tolerate stocking in tanks at numbers that will mean profit to the aquaculturist Using results from the feeding study, the second FRG looked at how adaptable the black sea bass were to different stocking densities. The CMS facility uses recirculating tanks — a "closed" system in which water quality is managed using biological and mechanical filtration with ultraviolet water sterilization. Heat pumps control water temperature. The black sea bass did well with more fish per tank. Another study funded by the Department of Agriculture is looking at stocking
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