Shellfish Stocks and Fisheries Review 2012: An assessment of selected stocks
PublisherMarine Institute & Bord Iascaigh Mhara
MetadataShow full item record
AbstractThis review presents information on the status of selected shellfish stocks in Ireland. In addition data on the fleet (<13m) and landings for all species of shellfish (excluding Nephrops and mussels) are presented. The intention of the annual reviews is to present stock assessment and scientific advice for shellfisheries which may be subject to new management proposals or where scientific advice is required in relation to assessing the environmental impact of shellfisheries especially in conservation areas designated under European Directives.
DescriptionThis review presents information on the status of selected shellfish stocks in Ireland.
CitationMarine Institute & Bord Iascaigh Mhara, "Shellfish Stocks and Fisheries Review 2012: An assessment of selected stocks", Marine Institute and Bord Iascaigh Mhara 2012
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The western spurdog Squalus acanthias L. fishery in 1989 and 1990, with observations on the further development of the gillnet fishery directed on the speciesFahy, E. (Department of the Marine, 1992)Between 1987 and 1990 the western fisheries of spurdog briefly harvested heavy then progressively reduced landings. These were sampled in each year. The peak and post-peak fisheries have been described and this account is of the fishery in 1989 and 1990. Although the catch per effort has declined substantially from the peak fishery, spurdog remains an important target species. The fishery is assessed from 856 individuals captured in 1989 and 688 the following year. The following criteria of sampled fish classified according to method of capture were examined: sex ratio, weight, age and a growth index. Gillnet-caught females are regarded as indicators of the broodstock which shows signs of having made some recovery from its immediate post peak condition. The Carrigaholt gill net fishery, the index fishery which has been monitored for four years, exploits a range of species by gill net, spurdog and gadoids being the principal ones to date, and it has increased its fishing capacity over the period. In 1989 and 1990 effort was directed on hake; some characteristics of these landings are given and compared with gill net caught hake from other parts of the country.
Sea-trout and their fisheries from the Dublin Fishery DistrictFahy, E. (Department of Fisheries and Forestry, 1981)Age, length and weight data from 440 sea-run trout are described together with data from 339 parr from a small trout stream. Pre-migratory length at age was not influenced by calcium content of nursery streams. Relatively faster growth of certain year classes in particular years was observed. Mean smolt age (2.1 years) was low. Sea run fish averaged at 0.86 sea-winters, contrasting with longer lived sea-trout on the Welsh coast but early maturation was observed in both. The regression coefficient for percentage previous spawners on mean individual weight in the Irish/Celtic Seas was lower than for fish from the Atlantic. The four principal fishing centres are each supplied with sea-trout by two to four small to medium sized rivers. A proportion of the catch is likely to originate in non licensed mullet gear. The annual catch declined from a peak of four tonnes in the 1950s to stabilise at 1.5 tonnes since the 1960s. The decline coincided with an increase in the ratio of draft to drift nets.
European Conservation Year 1970: Synopses of talks given at meetings organised by the Fisheries Division of the Department of Agriculture and FisheriesAnon. (Department of Agriculture and Fisheries (Fisheries Division), 1972)As part of its contribution to European Conservation Year, 1970, the Fisheries Division of the Department of Agriculture and Fisheries organised a series of lectures in Dublin and at centres around the country to indicate what work is being carried out in the division within the conservation field. The Dublin meetings were opened by reading of addresses by Mr. Jackie Fahey, Parliamentary Secretary to the Minister for Agriculture and Fisheries, The Parliamentary Secretary's addresses and those of the chairman, Dr. A.E.J. Went, D.Sc, M.R.I.A., Inspector of Fisheries and Scientific Adviser and synopses of the talks by the other speakers (all from the Department of Agriculture and Fisheries) are given.