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Eel research 1973
Moriarty, C
Moriarty, C
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1974
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Department of Agriculture and Fisheries (Fisheries Division)
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Abstract
Eel research broke new ground in 1973 by beginning a study of elvers and young eels. Elvers enter fresh water in spring and make their ways upriver. Precise information on when they arrive, in what numbers and how far they travel is very limited, although the subject was studied in the early years of the present century. Knowledge of the behaviour of eels in these early stages is essential because we have now proved that the scarcity of eels in many Irish waters is caused by the failure of the small eels to reach them. The situation could be improved by artificial transport of the young eels but first they must be caught and we must find out where and how best to catch them. In 1973 the arrival of elvers happened rather late and many were still on the move from the end of June right up to August. A study of the young eels at Parteen Weir on the River Shannon showed that there were virtually no elvers amongst them. This indicated that elvers took more than a year to travel distance of nine miles to Parteen from the top of the tide.
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Moriarty, C., "Eel research 1973", Irish Fisheries Leaflet, Department of Agriculture and Fisheries (Fisheries Division) 1974