Documents | Seafish

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.

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.

Scallop Spat Collection 1984, with Comparison of Methods of Spat Sorting

The annual collection of Pecten and Chlamys spat is a routine aspect of the Ardtoe scallop cultivation development programme. In 1984 three types of collection systems were used to give further information on the timing of settlement, which took place in early July. 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.

The Performance of High Speed Fishing Vessels in Service

The report describes a series of speed/load/fuel consumption trials on a group of commercial fishing vessels, and from the results, comments on the need to identify the correct operating criteria when drawing up specifications for such vessels. 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.

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.

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.

Review of Technical Conservation Measures in UK Nephrops Fisheries

Seafish are proposing a programme of work aimed at optimising whitefish selectivity through the more effective use of technical conservation measures (TCMs) in Nephrops trawls. This report covers the first stage of that work. Representative members of the UK Nephrops catching sector were canvassed for their views on current and possible alternative TCMs. The results of this industry survey are presented on a regional basis incorporating the main centres of Nephrops landings in England, Scotland and Northern Ireland. As well as analysis on a regional basis, responses have been examined by power category and by comparing single trawl and twin trawl operations. The report highlights a general dissatisfaction with current legislation regarding TCMs. There is a willingness to support work aimed at further reductions in discards but with little enthusiasm for the suggested options which include rigid selection devices and separator trawls. The report concludes with a number of recommendations for further work on TCMs as the next stage to the development programme. 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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Trials to Investigate the Effect of Onboard Hopper & Conveyor Systems on Fish Quality

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

Scallop Spat Collection 1984, with Comparison of Methods of Spat Sorting

The Performance of High Speed Fishing Vessels in Service

Deep Water Fisheries of the North Atlantic Slope

Inland Wholesale Fish Markets - 3. Distribution of Fresh Fish

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

Review of Technical Conservation Measures in UK Nephrops Fisheries

Seafood Trends in Commercial Foodservice (2023 Update)

Market Insight Factsheet: Prawn and Shrimp - February 2024

Discards - New Developments in 2014

tariffs_on_seafood_imported_into_the_eu.pdf

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