. Commercial fisheries review. Fisheries; Fish trade. 31 electrical trawl device for harvesting ale- wives. Test catches were 28% higher than those of ordinary trawls. Increased commercial harvest--and in- troduction of salmon--may reduce alewife die-off s and restore the fish population bal- ance. BCF is conducting to promote the growth of the catfish industry: "gear and harvesting researchj technological develop- nient, quality improvement, and Federal aid ; Its researchers have developed a mechan- ized haul seine to harvest catfish effectively. It works well wit
. Commercial fisheries review. Fisheries; Fish trade. 31 electrical trawl device for harvesting ale- wives. Test catches were 28% higher than those of ordinary trawls. Increased commercial harvest--and in- troduction of salmon--may reduce alewife die-off s and restore the fish population bal- ance. BCF is conducting to promote the growth of the catfish industry: "gear and harvesting researchj technological develop- nient, quality improvement, and Federal aid ; Its researchers have developed a mechan- ized haul seine to harvest catfish effectively. It works well with conveyor equipment used to load fish into trucks for shipment. The seine is efficient in large and small ponds down to 8 feet. GULF & SOUTH ATLANTIC BCF vessels discovered thread herring stocks in the Gulf of Mexico. Its staff is co- operating with industry in the northeastern Gulf to promote a new industrial fishery for this and other sardinelike species. BCF's new "Oregon II" located stocks of tilefish and groupers in the Gulf's deeper waters. Other Bureau vessels have found concen- trations of calico scallops off Florida's east coast in 3 areas between New Smyrna Beach and Fort Pierce. Interested groups are try- ing to start a commercial fishery. PACIFIC NORTHWEST BCF exploration determined the areas and abundance of Pacific hake. This helped the commercial fishermen make good Fig, 2 - Nylon haul se: catfish from farm ponds : developed by BCF is stacked on pontoon barg ady to set ovt esting Demonstrating Seine During first-quarter 1968, 10 harvesting demonstrations with the mechanized seine were run in farm, ponds in the Arkansas-Mis- sissippi delta region. More than 200,000 pounds of fish were taken from 340 acres. A truck -mounted line hauler is being tested "to develop a safe, efficient, and compact harvesting ; BCF is providing information on plant de- sign and sanitation to new processing plants in Arkansas and Mississippi. It
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