1970

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Preliminary Observations On The Effect Of Electrical Seine On Fish Catch
(Society of Fisheries Technologists (India) Cochin, 1970) Biswas, K. P.
Fortysix experiments were done with the electric seine in 24 tanks with A. C. and interrupted A. C. The source of electrical energy was a 3 KW A. C. generator of water-cooled diesel engine. A control seining without applying electricity was conducted for every experiment with electric ''seine,. to have a comparison for the efficiency of electric "seine'• over control ones. Electric seine was found to have an increased catch over control seining both in numbers and in weight. Electric seine with two electrodes was found to have better effect over three electrodes. Benthic fishes like Cirrhina mrigala, Notopterus notopterus, Cyprinus carpio, Glassogobius giuris, Ophicephalus sp. and Mystus sp. were found to be more sensitive in electric "seine". Increased catch of small fishes like C. mriga/a, N. notopferus and Ophicephalus sp. has been observed in electrical "seine" in addition to larger ones.