Browsing Irish Fisheries Bulletin by Subject "sea-trout Salmo trutta"
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The Beltra Fishery, Co. Mayo and its sea-trout Salmo trutta stocksThe sea trout stocks of the Lough Beltra catchment in Co. Mayo are described from a sample of 620 specimens collected in 1973 and 1974. These angler-caught fish displayed a low diversity in age categories and the samples contained few previous spawners. Variation in the success of parr growth in different years, between males and females and between A and B type smolts is compared. The incidence of A type growth is high, resembling that of a neighbouring catchment and the amount of B type growth can be related to length of the estuary. The Beltra angling fishery for sea trout exploits mainly two year smolt post-smolt. Traditionally the angling clientele have originated largely out of state and the decline in catches in recent years is attributed to a smaller volume of tourism in the post-1969 period. Catch per effort does not correlate with the supposed availability of sea trout and angling effort is regarded as the main factor deciding the yield from the fishery.