Shellfish Stocks and Fisheries Review 2014: An assessment of selected stocks
PublisherMarine Institute and 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 (<13 m) and landings for all species of shellfish (excluding Nephrops and mussels) are presented. The intention of this annual review 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 areas designated under European Directives.
DescriptionThe review reflects the recent work of the Marine Institute (MI) in the biological assessment of shellfish fisheries.
CitationMarine Institute & Bord Iascaigh Mhara (2015). Shellfish Stocks and Fisheries Review 2014: An assessment of selected stocks. Marine Institute and Bord Iascaigh Mhara
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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.
A List of Scientific and Engineering Papers by Members of the Staff of the Fisheries Division of the Department of Agriculture and Fisheries 1950-1970Anon. (Department of Agriculture and Fisheries (Fisheries Division), 1972)The Fisheries Division of the Department of Agriculture and Fisheries conducts researches into many aspects of Irish fishes, fishing and fisheries and a considerable number of papers on a wide range of topics have been published over the years in a number of journals including special publications of the Department, namely Irish Fisheries Investigations Series A (Freshwater) and Series B (Marine) and Fishery Leaflets. The present leaflet gives details of papers published by members, or former members, of the Department’s staff since 1950, as a result of their official work or arising there from. In addition to the papers mentioned below members of the Department's staff have contributed to various international bodies other papers, which have not been published subsequently. The list does not, however, include papers prepared by members of the Department's staff, whilst on secondment to semi-state bodies. Some of the authors have now left the service of the Department and details are given as necessary in the following list, Details are also given of the joint authors who were never in the service of the Department.
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.