• The Impact of Eel Fyke Netting on Other Fisheries

      Moriarty, C (Department of Tourism, Fisheries and Forestry, 1986)
      The small fyke net was introduced to Ireland in 1963 and has been operated extensively in tidal water ever since. Experiments in freshwater began in Lough Corrib in 1967, conducted by the then Department of Agriculture and Fisheries. In 1970 operation by professional fishermen under special authorisations began. It has been effectively demonstrated by the Department's experiments, by information furnished by the professional fishermen and by observations by local fishermen and the Department's officials that fyke nets could be used for eel fishing without harmful effects on other fish stocks. As a result, the fyke net was listed as a "scheduled engine" in the Fisheries Act, 1980
    • Inland storage of crawfish and lobsters

      Farrell, D P (Department of Agriculture and Fisheries (Fisheries Division), 1974)
      Numerous problems occur in the handling and transport of large live crustaceans. The experienced buyer will become familiar with these difficulties over a period of years and will know how best to surmount them in practice. Often, however, the precise cause of the problems is either not known or not appreciated. Satisfactory storage can be achieved by experience alone but a biological appreciation of the precise conditions required for storage of lobsters and crawfish will be most beneficial to the industry, and particularly to those persons entering it for the first time. With this in mind Fisheries Division has been carrying out investigations in this field, and work was advanced rapidly in 1973 by the availability of a research field station at Dunmore East, Co Waterford. A detailed biological study of the storage behaviour of crawfish based on experiments is being undertaken at this station. Meanwhile this Leaflet has been written to give some preliminary results of these investigations, and also to describe one practical commercial result based on early findings.
    • Interaction between seals and salmon drift net fisheries in the west of Ireland

      McCarthy, D T (Department of Fisheries and Forestry, 1985-05)
      The common seal Phoca vitulina L. and the grey seal Halichoerus grypus F. are both present in colonies along the west coast. The common seal inhabits bays and estuaries and inlets with sandy bars mainly in Galway Bay, Clew Bay, Co. Mayo, Ballysadare Bay, Co. Sligo and Donegal Bay. The grey seal is more widely dispersed particularly in the summer months and can be seen in bays, estuaries and offshore islands. Widespread complaints by salmon fishermen in Galway Bay of severe predation by seals on salmon caught in drift nets in 1978 led to a programme to study the problem. In 1979 and 1981 direct observations on board two salmon drifters were made in Galway Bay and in 1980 and 1981 similar work took place on three boats in Sligo Bay. In addition, two crews were interviewed in port each evening. In 1980 salmon landed in Donegal, Galway and Kenmare were examined at market points and the number of seal damaged fish recorded. This leaflet gives the results of the study and concludes that effective control requires measures against the seals which are actually robbing the nets. Destruction of seals at breeding colonies is unlikely to have any positive effect on the rate of predation.
    • Interesting recaptures of tagged salmon in 1973

      Went, A E J (Department of Agriculture and Fisheries (Fisheries Division), 1973)
      In a recent paper (Went, 1973) I gave details of movements of salmon to and from Irish waters based on returns from foreign centres of fish tagged in Ireland and of foreign tagged fish recaptured in Irish waters, This note gives details of the recaptures made in 1973 on similar lines.
    • Interesting recaptures of tagged salmon in 1974

      Went, A E J (Department of Agriculture and Fisheries (Fisheries Division), 1975)
      In a previous issue in the Fishery Leaflet series (No 58, 1973) I gave a list of interesting recaptures of tagged salmon in Irish waters in the year 1973. In this Leaflet I propose to give details of similar fish in 1974 and of some tags recovered in earlier years but not reported until 1974.
    • Inventory of Otolith Collections and Ageing Work on North East Atlantic Deep Water Fish Species

      Connolly, P L; Kelly, C J; Gordon, J D M; Bergstad, O A (Department of the Marine, 1995-03)
      The result of a questionnaire sent to 38 institutes, indicate that a broad range of unpublished raw data exist on many of the deep water fish species in the north east Atlantic and Mediterranean. Of the 18 fish classified by ICES as 'primary' deep water species, one or more of the six Coryphaenoides rupestris, Mora moro, Aphanopus carbo, Hoplostethus atlanticus, Phycis blennoides, Helicolenus dactylopterus were common to most of the institutes which completed the questionnaire. Institutes which possessed some form of otolith or ageing data on these primary fish are grouped by species. A table of institutions which have some form of data on other deep water species (including sharks, rays and Chimaerids) is presented. A list of the main deep water species is given with their English, French, and Spanish common names. In general, there was a very positive response to the setting up of an otolith exchange scheme (by correspondence), as an initial approach to the convening of a deep water ageing workshop. The questionnaire did not provide any indications as to the extent or quality of the various data sets.
    • Investigation into the Toxicity of Corexit - A new oil dispersant

      Griffith, David de G (Department of Agriculture and Fisheries (Fisheries Division), 1969)
      In view of the high degree of toxicity (Smith 1968, Simpson 1968) of BP 1002, Gamlen Oil Spill Remover, Dasic Slickgone and other "detergents" used in Cornwall to combat pollution from Torrey Canyon oil, it was considered desirable to investigate the toxicity of a compound marketed as an oil dispersant under the brand name "Corexit 7664", claimed by the manufacturers to be non-toxic to marine fauna. It is produced by the Standard Oil Company of New Jersey and marketed in the U.K. by the Esso Petroleum Company. It is stated by the manufacturers to be a non-ionic surfactant, soluble in fresh water, 5% NaCL solution and isopropanol, and dispersible in fuel and crude oils. It contains no organic halides or heavy metals. The investigations reported in this paper were made in two experiments. In the first, the toxic effects of straight dilutions of Corexit in seawater were assessed. In the second, the toxicity of Corexit-dispersed crude oil was compared with that of crude oil alone, with an attempt to imitate conditions at low tide on a polluted beach. The first experiment was carried out in Bantry, Co. Cork, using material collected locally. The second experiment was carried out in the laboratory of the Fisheries Division, Department of Agriculture and Fisheries, and the material was collected at Sandycove, eight miles south of Dublin.
    • Irish Mussel Fishery 1971-1972

      Crowley, M (Department of Agriculture and Fisheries (Fisheries Division), 1972)
      Since 1966 the landings of mussels in Ireland have increased significantly. Almost all the mussels landed are exported either in the processed form or live in the shell to Britain and the continent; only a small quantity (only a few cwt.) of live mussels are sold weekly during the season in Dublin. The price of such mussels averages about 7½p per pound. The amount of mussels consumed in the rest of the country is negligible.
    • The Irish shellfish industry 1948-1967

      Gibson, F A (Department of Agriculture and Fisheries (Fisheries Division), 1969)
      The term shellfish is used to group together two very large orders of the animal kingdom, namely the Crustacea and the Molluscs. These orders are not closely related to each other; the main characteristics they have in common being that neither of' them has an internal supporting structure or skeleton. However, they live in similar environments, mainly in the sea, although a few inhabit fresh water, Many hundreds of individual species occur in Irish waters, but only a small number of these are commercially important. These include lobsters, crawfish, Dublin Bay prawns (Nephrops), crabs (all crustaceans), periwinkles, oysters, escallops, mussels, cockles, whelks and clams (all molluscs). During the twenty year period 1948 to 1967, reviewed in this paper, the Irish shellfish industry has changed in many respects. In some sectors methods of fishing have been improved, farming techniques have been introduced and the development of markets on Continental Europe has encouraged the use of improved methods of handling and transport of shellfish to these distant destinations, Nevertheless the rate of expansion of the shellfish industry has been comparatively slow.
    • Length-Weight Relationships, Fat Content and Parasitic Infestation of Irish Mackerel

      McArdle, E; Barnwall, E; Nolan, F (Department of Fisheries and Forestry, 1985)
      Landings of mackerel by Irish vessels have increased dramatically in recent years. The total catch in 1982 amounted to 110,000 tonnes which was valued at about 8.5 million pounds, compared with only 8,500 tonnes, values at 0.36 million pounds in 1974. The major cause of the increase has been the introduction of six large trawlers into the fleet around 1980 as a result of which the total catch jumped from 24,000 tonnes in 1979 to 80,000 tonnes in 1980. The main landings into Irish ports are made at Killybegs and Rathmullen, while smaller landings are made into Castletownbere and Galway. Since 1983 considerable quantities have also been landed into western Scottish ports. Most of the catches are taken off the west and northwest coast but again since 1983 the Irish fleet has successfully fished over a wide area extending from west of the Shetland Islands down to Cornwall.
    • Levels of metals and organic contaminants in mussels Mytilus edulis from Cork Harbour - 1989

      Boelens, R G; Nixon, E R; McLaughlin, D (Department of the Marine, 1990-07)
      This study of contaminants in mussels from outer Cork Harbour (Buoy no. 8) has shown that the levels of selected metals and organochlorine substances are generally low and at the lower end of the ranges measured in recent surveys of mussel populations at other European coastal sites.
    • List of Fishery Leaflets Nos. 1 (1938) to 111 (1981)

      Anon. (Department of Fisheries and Forestry (Trade and Information Section), 1981)
      These leaflets provide a medium for distributing information on various aspects of fishery research and development undertaken by Officers of the Department. 111 leaflets have been published to date (December, 1981). A list is attached.
    • List of Fishery Leaflets Numbers 1 (1938) to 50 (1973)

      Anon. (Department of Agriculture and Fisheries (Fisheries Division), 1973)
      These Leaflets provide a medium for distributing information on various aspects of fishery research and development undertaken by officers of the Department. 50 Leaflets have been published to date (May 1973). A list is attached.
    • List of fishery leaflets numbers 1 (1938) to 58 (1973)

      Anon. (Department of Agriculture and Fisheries (Fisheries Division), 1974)
      These Leaflets provide a medium for distributing information on various aspects of fishery research and development undertaken by officers of the Department. 58 Leaflets have been published to date (January 1974). A list is attached.
    • A List of Scientific and Engineering Papers by Members of the Staff of the Fisheries Division of the Department of Agriculture and Fisheries 1950-1970

      Anon. (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.
    • List of some historical papers etc. on Irish fish, fishing and fisheries 1940-1974

      Went, A E J (Department of Agriculture and Fisheries (Fisheries Division), 1978)
      Since 1940 I have had a keen interest in the history of fish, fishing and fisheries in Ireland and in my capacity as an inspector of fisheries I had an unrivalled opportunity, in my travels around the country, to acquire information on fishing methods, which were becoming, or even had became obsolete. For example, when I was preparing my second paper on the Galway Fishery (No. 6 on list below) I made inquiries at the National Museum, Dublin as to what Irish fishing spears were preserved in that museum. I was surprised to learn that very little material of this kind was available, although I knew that “hoards” of salmon spears, seized by the Boards of Fishery Conservators, were kept in various parts of Ireland. Fortunately I was able to have these, and other spears, mainly for eels, collected up and deposited in the National Museum, which can now claim to have a good representative collection of Irish traditional fishing spears for salmon and eels. My paper on Irish fishing spears (No. 29 on list below) resulted from the collection of the fishing spears referred to above. Articles in newspapers and other popular journals have generally been omitted from the list below, because they were usually based on information given in contributions to the journals etc. of learned and other societies. This list also does not include details of papers on the scientific aspects of Irish fisheries, details of which have already been published in Fishery Leaflet No. 25.
    • Lobster Trap Census 1968

      Gibson, F A (Department of Agriculture and Fisheries (Fisheries Division), 1969)
      A census made in July and in September, 1968 of the number of traps used in the Irish lobster fishery has been used in this paper as the basis for an analysis of lobster catch. The catch figures supplied to the Fisheries Division by various collectors have been correlated with the gear used in the 12 maritime counties involved.
    • Lobster Trap Census 1969

      Gibson, F A (Department of Agriculture and Fisheries (Fisheries Division), 1970)
      This leaflet adds to the information given in Fishery Leaflet No. 11 (Gibson, 1969) concerning lobster traps used around the Irish coasts in 1968. The catch figures supplied to the Fisheries Division by various collectors have been correlated with the lobster gear used by boats fishing off the 12 maritime counties. The purpose of these continuing records is to provide an annual measure of the effects of fishing upon lobster stocks and thereby to analyse trends in the landings, by comparing annual catch and effort.
    • Lobster Trap Census 1971

      Gibson, F A (Department of Agriculture and Fisheries (Fisheries Division), 1972)
      This leaflet continues the information provided by Fisheries Leaflets 11, 23 and 26. There was little change in the types of Lobster fishing gear in use in 1971 compared with previous years.
    • Lobster trap census 1972

      Gibson, F A (Department of Agriculture and Fisheries (Fisheries Division), 1973)
      This leaflet continues the information provided by Fishery Leaflets Nos. 11, 23, 26, and 39. There was little change in the types of Lobster fishing gear in use in 1972 compared with previous years.