Premium
Short Note on the Silver Eel Catch on the Lower River Shannon
Author(s) -
Moriarty Christopher
Publication year - 1990
Publication title -
internationale revue der gesamten hydrobiologie und hydrographie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 0020-9309
DOI - 10.1002/iroh.19900750622
Subject(s) - fishing , fishery , zoology , period (music) , biology , geography , oceanography , mathematics , environmental science , geology , physics , acoustics
Catches of eel from the Shannon lake system of 35,000 ha have fluctuated from 10 to 46 t per annum over the period 1964 to 1988. Peak catches are observed at intervals from 3 to 5 years. Catches increased following improvement of fishing gear but otherwise remained steady in spite of a sustained increase in stocks. Migration was observed every month except June. The numbers of female eels>60cm decreased over the period. Male eels ranged from 39 to 44 cm, ages 5 to 15; females from 45 to 99 cm, ages 8 to 30 years.