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MECHANICAL FISH CONTROL <br />SUCKER REMOVAL WITH TRAP NETS <br />Catch/lift <br />.? ., . _ Kilos Remaining <br />-J 40 <br />m <br />c <br />Q <br />Lw 30 <br />L <br />O <br />(L <br />y 20 <br />L <br />O <br />Y <br />U <br />C/) 10 <br />CD <br /> <br />ft -- <br /> <br />21 23 25 27 29 31 2 <br />May June <br />9,000 <br />c. <br />.a <br />E <br />a? <br />6,000 <br />E <br />ca <br />I <br />CD <br />O <br />3,000 j? <br />a <br />E <br />y <br />w <br />SOURCE: JOHNSON (1975) n