. Commercial fisheries review. Fisheries; Fish trade. 24 COMMERCIAL FISHERIES REVIEW Vol. 23, No. 1 Great Lakes Fisheries Exploration and Gear Research COMMERCIAL POTENTIAL OF UNDER- UTILIZED FISH STOCKS IN LAKE MICHIGAN SURVEYED: M/V "Capitol I" Exploratory Cruise 3: The third in the 1960 series of trawl explor- ations in Lake Michigan was carried out be- tween South Haven, Mich., and Chicago, 111., by the U. S. Bureau of Commerical Fisher- ies chartered vessel Capitol I, a former Gulf of Mexico shrimp trawler. The objec- tives of the seven-day cruise (ending October 1) were to dete
. Commercial fisheries review. Fisheries; Fish trade. 24 COMMERCIAL FISHERIES REVIEW Vol. 23, No. 1 Great Lakes Fisheries Exploration and Gear Research COMMERCIAL POTENTIAL OF UNDER- UTILIZED FISH STOCKS IN LAKE MICHIGAN SURVEYED: M/V "Capitol I" Exploratory Cruise 3: The third in the 1960 series of trawl explor- ations in Lake Michigan was carried out be- tween South Haven, Mich., and Chicago, 111., by the U. S. Bureau of Commerical Fisher- ies chartered vessel Capitol I, a former Gulf of Mexico shrimp trawler. The objec- tives of the seven-day cruise (ending October 1) were to determine the abundance and sea- sonal distribution of the various species of fish inhabiting the area and to learn the lo- cation of areas suitable for Tlie third 1960 exploratory cruise by Capitol L Some thirty-four 30-minute drags were com- pleted in various depths between 10 and 42 fath- oms using a standard, 50-foot (headrope), Gulf of Mexico balloon-type fish trawl. Catches ranged from 70 to 1,170 pounds of mixed chubs, bloater chubs, and alewives per drag. Best fishing results were obtained north of Michi- gan City, Ind., in Michigan waters, at depths of 15 to 35 fathoms. Seven drags in this area caught fish (96 percent L. hoyi) at an average rate of 793 pounds per hour. Infour other lo- calized areas this depth range produced fish at average rates of 345,461,497, and 498 pounds per hour. Considering the entire cruise area, the 20- and 30-fathom depth range was most productive with 18 drags catching an average of 6 3 9 pounds per hour. Alewives were caught in amounts of 5 to 180 pounds and averaged 59 pounds in 13 drags scattered throughout the area in the 15- to 25-fathom depth zone. Smelt, white- fish, and herring were taken in amounts of 10 pounds or less per drag, and yellow perch were caught in amounts of 10 pounds or less per drag, and yellow perch were caught in amounts of 1 pound or less in 11 drags. Extensive soundings of Indiana waters re- vealed unfavor
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