Documents | Seafish

MAFF Funded North East Coast Discard Study 1992 - Final Report

The report presents the results of studies of the discarding practices, which is the rejection of unwanted fish by fishermen at sea, of the fisheries of the North East Coast of England. Results for 1992 are analysed and comparisons made with the previous study of 1990-91. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

A summary of the Illness Associated Organisms which can affect Molluscan Shellfish Safety

This report describes the main causative agents and the testing and control measures routinely adopted to protect the public. This report was originally written as an appendix to a report on the first International Converence on Molluscan Shellfish Safety, to provide background information on the illnesses discussed during the conference. This conference, at which Seafish presented a paper on some of their recent work on Mollusc Depuration, was held in November 1994 at the University of New South Wales, Sydeney, New South Wales, Australia.

Trials to Investigate the Effect of Onboard Hopper & Conveyor Systems on Fish Quality

With concern that the deep fish reception hoppers and associted elevators for mechanised handling of the catch on whitefish vessels could be affecting fish quality two sea trips were carried out on Scottish seners/trawlers during September 1997 to take fish samples for assessment at processing. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Raising Standards in the Port Sector Quality/Standards Audit - Newlyn

As part of Seafish’s policy of encouraging higher standards of quality and hygiene in the ports sector, a survey of landing and sale operations was undertaken at Newlyn on the 9th and 10th August at the invitation of local interests. The following notes provide a brief record of observations with regard to the standard of existing facilities, equipment and operating practices for landing and sale. The investigation extended from the fish quays, market and dock estate but excluded merchants premises and vessels. The notes are intended to highlight any problem areas and form the basis for discussion between interested parties to raise standards where required, and to promote the Port of Newlyn. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Cockle Dredging/Improve Performance Using a Solids Pump

This report describes the development of an improved cockle dredging system for the small (about 12 metres) vessels in the UK fleet carried out under MAFF R&D Commission 1988/89, Project Code IAG16. The major change was to use a solids handling pump for pumping water and cockles from the dredge head as opposed to the former method of a water jet pump incorporated within the dredge, which was the principle of the WFA cockle dredge developed in the 1960’s. Four different solids pumps were shore tested and three found to give satisfactory performance running at a restricted speed. The dredge head design was altered to resemble a smaller version of the standard Dutch suction dredge which has incorporated the solids pump principle for some years. The Dutch dredgers, however, are much larger than those in the UK and for this reason it was not possible to transfer the technology from one fishery to the other. Two separate shipboard installations were completed at Kings Lynn and subsequent trials in the Wash were most successful. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

A Review of Handling Practices for Mussels in the UK, Holland and New Zealand

Handling practices for mussels in the Wash Fishery have been compared with those of the Dutch Fishery. Further comparisons have been made with a New Zealand code of practice and information from Tasmania. In general the UK mussel fishery is shown to be poorly organised and producing a relatively low grade raw material. Quality control practices including purification and post harvest temperature and live holding conditions leave room for immediate improvement but the report shows the importance of an integrated development of the mussel industry. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Fishing Industry of S.W, England - A Business Study

The report describes the Fishery in the S. West during 1984/1985 and is part of the series of background studies covering the U.K. Fisheries as a whole. The Fishery is broadly divided into the deep water section - typified by the Brixham and Newlyn beamers and the inshore vessels operating mainly from coves in Cornwall. The competition for the fish resouces is described but in general the fishery is enjoying some growth mainly as a result of sales to the Continent.

Fleet Structures Model - Overview and its Use in Decision Support

The Fleet Structures Model (FSM) is a predictive model with the purpose of simulating aspects of the structural development and operation of a national sea fishing fleet in order to make comparative assessments of fleet management policy scenarios. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Deep Water Fisheries of the North Atlantic Slope

Until recently the Continental Shelf areas of the North Atlantic have provided adequate fish stocks for the purposes of professional fishermen. Today most of these stocks are fully exploited or over exploited and commercial fisheries are, of necessity, severely restricted. Inevitably this has led to a search for new resources and, in particular, there is an increasing interest in the deep water species of the Atlantic Slope (circa 500m to 2000m). Although the biology of the fishes of the deeper water has been extensively studied by scientists for a century or more, there has been very little work in stock sizes. There is very little information to give to fishermen, or indeed to legislators who must exercise some restraint on these fisheries if the mistakes arising from too much effort on the Continental Shelf are to be avoided in deeper water. Up until now there has been only a limited amount of effort directed at these fisheries and for only a few species such as roundnose grenadier Coryphaenoides rupestris), roughhead grenadier (Macrourus berglax), blue ling (Molva dipterugia), orange roughy Hoplostethus atlanticus), black scabbard (Aphanopus carbo) and the more familiar Greenland halibut (Reinhardtius hippoglossoides). This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Trawl Door Development Project: Project C. Flume Tank Testing of Quarter Scale Doors

This project is the second by a summer vacational student on the subject of testing model trawl doors in the Seafish Flume Tank in Hull. Progress on equipmnt and instrumentation has been made and a standard procedure of testing various types of trawl doorshas been recommended.

Scallop Predation by Crabs, in Relation to the Development of On-Bottom Cultivation

The feeding success of four species of crabs (Crustacea : Brachyura) which are potential predators of the scallop Pecten maximum (L) was studied under laboratory conditions. Liocarcinus depurator was the only species not to prey on scallops of 4 and 5 cm shell height, whereas Liocarcinus puber. Carcinus maenas and Cancer pagurus showed the greatest potential to prey on scallops and further experiments were carried out with this species using a wide size range of bivalve. Presented with scallops within the range 3-9 cm shell height resulted in the following trends : as prey size increased, the proportion of crabs feeding decreased, male and female crabs showed similar predatory behaviour, and marine fouling on scallop shells had no significant effect on crab feeding. These findings are discussed in relation to the potential for bottom culture of P. maximus. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Inland Wholesale Fish Markets - 3. Distribution of Fresh Fish

This is the final report of the Joint study of the inland wholesale fish markets in Great Britain undertaken by Sarah Maddock (Humberside College of Higher Education), John Tower (Seafish) and David Symes (University of Hull). Previous reports have described the position of the markets as seen first by the merchants and then by their customers’ relying heavily upon the analysis of questionnaire data. The nature and scope of this final report is different. It takes a much broader look at the inland distribution of fresh fish; it offers a critical analysis of the inland wholesale markets; and it outlines a basic strategy and programme of action for coping with the pressures of increasing competition in the 1990s. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

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