APPENDIX A
Agenda

1. Opening of the session

2. Adoption of the agenda and arrangements for the session

3. Fishery biology and management (Sub-Commission I)

   3.1   Consideration and adoption of the report of the Symposium on Stock Enhancement in the Management of Freshwater Fisheries

   3.2   Cooperative Programme on Lake Fisheries Management

   3.3   Selectivity of fishing gear

   3.4   Crayfish

   3.5   Eel

   3.6   Follow-up of the Technical Consultation on the Allocation of Fishery Resources

   3.7   International intercalibration exercise

   3.8   Updating of pike and eel synopses

   3.9   Terms of reference of Sub-Commission I

   3.10   Election of Chairman, Vice-Chairman and Rapporteur of Sub-Commission I

4. Fish culture and diseases (Sub-Commission II)

   4.1   Consideration and adoption of the report of the Symposium on Stoch Enhancement in the Management of Freshwater Fisheries

   4.2   Follow-up of the Symposium on New Developments in the Utilization of Heated Effluents and Recirculation Systems for Intensive Aquaculture

   4.3   Flow-through systems and recirculation systems

   4.4   Cooperative Programme of Research on Aquaculture

   4.5   Prophylactic measures in fish culture

   4.6   Assessment of the quality of fry and fingerlings for aquaculture purposes

   4.7   Mass production of eggs and larvae of warmwater fish

   4.8   Economics of small-scale aquaculture

   4.9   Election of Chairman, Vice-Chairman and Rapporteur of Sub-Commission II

5. Fish and polluted water (Sub-Commission III)

   5.1   Discharge of effluents from fish farms

   5.2   Toxicity of lead, nickel and chromium and water quality

   5.3   Updating of EIFAC Technical Paper 16 on water pollution problems affecting inland fisheries in Europe

   5.4   Fish toxicity testing procedures

   5.5   Habitat modification

   5.6   Terms of reference of Sub-Commission III

   5.7   Election of Chairman, Vice-Chairman and Rapporteur of Sub-Commission III

6. Consideration and adoption of the reports of the Sub-Commissions

7. Reports from EIFAC member countries

8. Code of practice to reduce the risk of adverse effects arising from the introduction or transfer of inland fish species

9. Input of EIFAC to developing world

10. Symposium in conjunction with the thirteenth session

11. Any other matters

12. Election of EIFAC officers

13. Date and place of the thirteenth session

14. Adoption of the report

APPENDIX B
List of Participants/Liste des participants

EIFAC Members/Membres de la CECPI

Austria/Autriche

KAINZ, E.
Deputy Head, Bundesinstitut für Gewässerforschung und Fischereiwirtschaft
Scharfling
A-5310 Mondsee

Belgium/Belgique

REIZER, C.
Professeur, Centre interuniversitaire des Sciences de l'environnement
Fondation universitaire luxembourgeoise
140 rue des Déportés
6700 Arlon

DUCARME, C.
Assistant à la pisciculture en eaux chaudes
Tihange
178 Chaussée des Forges
5200 Huy

SCHMIDT, G.
Assistant, Service hydrobiologie/Aquaculture
Centre Interuniversitaire des Sciences de l'environnement
140 rue des Déportés 6700 Arlon

Czechoslovakia/Tchécoslovaquie

BERKA, R. (Head of Delegation)
Head of Scientific Information Centre
Fisheries Research Institute
389 25 Vodnany

HOLCIK, J.
Laboratory of Fishery Research and Hydrobiology
Drienova ulc. 3
826 24 Bratislava

Denmark/Danemark

DAHL, J. (Head of Delegation)
Danish Institute for Fisheries and Marine Research
Inland Fisheries Laboratory
Lysbrogade 52
DK - 8500 Silkeborg

FROM, J.
Fishery Biologist
Danish Trout Culture Research Station
Broens
DK - 6780 Skaerbaek

RASMUSSEN, G.V.H.
Fishery Biologist
Inland Fisheries Laboratory
Lysbrogade 52
DK - 8600 Silkeborg

Finland/Finlande

TUUNAINEN, P. (Head of Delegation)
Finnish Game and Fisheries Research Institute
P.O.B. 193
SF-00131 Helsinki 13

PURSIAINEN, M.
Research Scientist
Evo Inland Fisheries and Aquaculture
Aquaculture Research Station
SF-16970 Evo

SALOJARVI, V.K.
Research Scientist
Finnish Game and Fisheries Research Institute
P.O.B. 193
SF-00131 Helsinki 13

SUMARI, O.
Director
Laukaa Fish Culture Research Institute
SF-41360 Valkola

WESTMAN, K.
Finnish Game and Fisheries Research Institute
P.O.B. 193
SF-00131 Helsinki 13

France

GILLET, Y.
Secrétaire général adjoint du Conseil supérieur de la Pêche
10 rue Péclet
75015 Paris

LEYNAUD, G.
Chef du departement “Ressources en Eau”, Cemagref
14 Avenue de Saint-Mandé
75012 Paris

MOREAU, J.
Professeur chargé des relations internationales, ENSA
Département des pêches
145 Avenue de Muret
31076 Toulouse

Germany(Fed.Rep.)/Allemagne (Rép.féd.d')

TIEWS, K. (Head of Delegation)
Director, Institut für Küsten und Binnenfischerei, Bundesforschungstalt für Fischerei
Palmaille 9
2000 Hamburg 50

BOHL, M.
Bayerische Landesantstalt für Wasserforschung Versuchsanlage Wielenbach
8121 Wielenbach

DAHM, E.
Bundesforschunganstalt für Fischerei
Institut für Fangtechnik
Palmaille, 9
2000 Hamburg 50

DETHLEFSEN, V.
Bundesforschunganstalt für Fischerei
Institut für Küsten and Binnenfischerei
Toxikologisches Laboratorium
Niedersachsenstrasse
2190 Cuxhaven

LOFFLER, H.
Landensanstalt für Umweltschutz Baden-Württemberg
Institut fur Seenforschung und Fischereiwesen
Postfach 4266
7994 Langenargen/Bodensee

STIPPL, S.
Landesfischereiverband Rheinland-Pfalz
Am Falkeneck 1
6749 Wieslautern

Greece/Grèce

RIGOPOULOS, C.
Director, Fisheries Division
Ministry of Agriculture
Menandrou 22
Athens

Hungary/Hongrie

DOBRAI, L. (Head of Delegation)
Head, Fisheries Department
Ministry of Agriculture and Food
Kossuth Lajos tér 11
Budapest V

BALOGH, J.
Fisheries Manager
Szabadsag u. 10
7200 Domboar

BENCZE, F.
General Secretary, Fisheries Society
Vöröskö u. 4/b
Budapest XII

BOTTA, I.
Chief of the Aquarium - Zoo
Allatkert krt. 6-12
1146 Budapest

CSAVAS, I.
Fish Culture Research Institute
P.O.B. 47
H-5541 Szarvas

DANCS, Z.
BUVIZIG
Rákóczi ut. 41
Budapest VIII

HORVATH, L.
Chief Biologist
Warmwater Fish Hatchery
P.O. Box 28
2441 Százhalombatta

PINTER, K.
Senior Officer
Ministry of Agriculture and Food
Kossuth tér. 11
1055 Budapest

TURKOVICH, O.
Veterinary, Halászati
Termelöszövetkezetek Szövetsége
Vöröskö u. 4/b
Budapest

Ireland/Irlande

O'CONNELL, J. (Head of Delegation)
Principal, Inland Fisheries Division
Department of Fisheries and Forestry
6E Agriculture House
Kildare Street
Dublin 2

McCARTHY, D.
Assistant Inspector of Fisheries
Department of Fisheries and Forestry
Fisheries Research Centre
Abbotstown, Castleknock
Co. Dublin

McGRATH, C.J.
Inspector and Engineer
Fisheries Division
Department of Fisheries and Forestry
6E Agriculture House
Kildare Street
Dublin 2

O'DOWD, P.J.
Fisheries and Conservation Manager
Electricity Supply Board
Lower Fitzwilliam Street
Dublin 2

Israel/Israël

RAPAPORT, U. (Head of Delegation)
Director, Inland Fisheries
Department of Fisheries
Ministry of Agriculture
P.O.B. 7011, Hakirya
Tel-Aviv 61070

LEVIN, A.
Fish Breeders Association in Israel
P.O.B. 1750
Haifa 31000

TAL, S.
Department of Fisheries
Ministry of Agriculture
P.O.B. 7011, Hakirya
Tel-Aviv 61070

Italy/Italie

CALAMARI, D.
Istituto di Ricerca sulle Acque, CNR
Reparto Sperimentale di Idrobiologia Applicata
Via delle Cascine Occhiate
20047 Brugherio

TASSELLI, A.
Azienda Riequilibrio Ittico Territorio
Regione Emilia-Romagna
Via Ugo Bassi 25
40100 Bologna

The Netherlands/Pays-Bas

STEINMETZ, B. (Head of Delegation)
Directorate of Fisheries
Ministry of Agriculture and Fisheries
P.O. Box 20401
2500 EK Den Haag

BUNGENBERG DE JONG, C.M.
Chief Fish Culture Division
Organization for Improvement of Inland Fisheries
Buxtehudelaan 1
3438 Nieuwegein
Tel: 03402-39494
Cable: OUEBE Nieuwegein

HUISMAN, E.A.
Head, Department of Fishculture and Inland Fisheries
State Agriculture University
P.O. Box 338
Wageningen
Tel: 08370-83382
Telex: 45097 EURO NL

Norway/Norvège

JENSEN, K.W. (Head of Delegation)
Principal Fisheries Research Officer
Direktoratet for Vilt og Ferskvannsfisk
Fiskeforskningen
Postboks 63
1432 Ås-Nlh

AASS, P.
Senior Research Officer
Direktoratet for Vilt og Ferskvannsfisk
Fiskeforskningen
Postboks 63
1432 Ås-Nlh Tel: (02) 949400

BERG, B.
Chairman Environment Committee FES
The European Federation of Salmonid Breeders
Det Kgl. Sebkep for Norges Vel.
Post Box 115
2013 Skjisten

BERGHEIM, A.
Scientist, Fish Research Division
c/o Mr. Kjell W. Jensen
Direktoratet for Vilt og Ferskvannsfisk
Fiskeforskningen
Postboks 63
1432 Ås-Nlh

GRANDE, M.
Senior Research Officer
Norwegian Institute for Water Research
P.O. Box 333, Blindern
Oslo 3

SKRETTING, T.
Director, T. Skretting A/S
P.O.B. 319
Stavanger

TORFINN, L
Institute of Ahtsils
University of Oslo
Oslo

Poland/Pologne

BACKIEL, T. (Head of Delegation)
Inland Fisheries Institute
Zabienec
05-500 Piaseczno

BNINSKA, M.
Blok 5
10-957 Olsztyn-Kortowoc

BONTEMPS, S.
Assistant to Director General
In Charge of Zabienec Department
Inland Fisheries Institute
05-500 Piaseczno

GORYCZKO, K.
Inland Fisheries Institute
Bytowska 5
Gdansk

LEOPOLD, M.
Inland Fisheries Institute
Blok 5
10-957 Olsztyn 5

TRZEBIATOWSKI, R.
Research Worker
Academy of Agriculture
Królewicza 5
71-416 Szczecin, Kaz.

Portugal

LOPES, S.
Director, Aquaculture Service
National Institute for Fisheries Research (INIP)
Avenida de Brasilia
1400 Lisboa

Romania/Roumanie

BACALBASA-DOBROVICI, N.
Professor
str. Partizanilor
Bloc Gl, ap.65
6200 Galati 6

Spain/Espagne

HABSBURGO, A.S.
Scientific Advisor of the Institute for the Preservation of Nature
Ministry of Agriculture
Madrid

Sweden/Suede

HOLMBERG, B. (Head of Delegation)
Head of Section
National Board of Fisheries
Box 2565
S-403 17 Gotheborg

FURST, M.
Associate Professor
Soetvattenslaboratoriet
S-170 11 Drottningholm

NILSSON, N.-A.
Associate Professor
Institute of Freshwater Research
Soetvattenslaboratoriet
S-170 11 Drottningholm

United Kingdom/Royaume Uni

LLOYD, R. (Head of Delegation)
Principal Scientific Officer
Fisheries Laboratory (MAFF)
Burnham-on-Crouch, Essex
Tel: 0621-782658 Telex: 995543

ALABASTER, J.S.
Fisheries Consultant
1 Granby Road
Stevenage, Hertfordshire SG 14AR

EGGLISHAW, H.J.
Principal Scientific Officer
Department of Agriculture and Fisheries for Scotland
Freshwater Fisheries Laboratory
Faskally, Pitlochry, Perthshire
Scotland Tel: 0796 2062

KENNEDY, G.J.A.
Principal Scientific Officer
Department of Agriculture of Northern Ireland
Fisheries Research Laboratory
38 Castleroe Road
Coleraine, Co. Londonderry
Northern Ireland

LINFIELD, R.S.J.
Regional Biologist and Fisheries Scientist
Anglian Water Authority
Ambury Road
Huntingdon, Cambridgeshire PE 18 6NZ

MUIR, J.
Institute of Aquaculture
University of Stirling
Stirling
Scotland

Yugoslavia/Yougoslavie

APOSTOLSKI, K. (Head of Delegation)
Professor, Agricultural Faculty
Rel. Kapestec 24
91000 Skopje

FIJAN, N.
Veterinarski fakultet
Heinzellova 55
41000 Zagreb Tel: 219333

OBRADOVIC, J.
Institute "Ruder Bosković
Center for Marine Research
Bijenićkac, 54
Zagreb Tel: 219333

Observers/Observateurs

Bolivia

ALBARRACINU, A.
Riobamba 631
La Paz

Canada

LAWLER, H.G.
Director-General
Western Region, Fisheries and Oceans
Freshwater Institute
501 University Crescent
Winnipeg, Manitoba R3T 2N6
Tel: (204) 269 7379 Telex: 07-57419

Egypt

ABDEL HAFIZ, M.A.
TEHAG 2441
Százhalombatta P.F. 28
Hungary

ABD EL NABI, M.
TEHAG 2441
Százhalombatta P.F. 28
Hungary

BAKR, I.M.I.
Engineer
Nasercity 4, Tyran Str.
Cairo

FONAD ELSUID, A.
Engineer
30 Str. Shaiten, Mataria
Cairo

ISSA, M.A.
TEHAG H-2441
Százhalombatta P.F. 28
Hungary

MONEIR, M.M.
Hatchery Specialist
Ahmad Orabi Str.
Alexandria

Madagascar

RABELAHATRA, A.
Chef de Division des Recherches piscicoles au Ministère de l'Enseignement supérieur et de la Recherche scientifique
B.P. 243
Antananarivo

RASOLOFO, A.L.
Chef de Division Pêche et Pisciculture du Ministère de la Production agricole
B.P. 243
Antananarivo

SAZAMA, R.
Economiste
TESCO, Nagy Lajos király
utca 202, Budapest
Hungary

U.S.A./Etats Unis d'Amérique

HALVER, J.
Vice-President
Halver Corporation
Box 116
Underwood, Washington 98651

HALVER, J.E.
Professor in Fish Nutrition
Official Observer
National Academy of Sciences
16502 41 N.E.
Seattle, Washington 98155

Intergovernmental Organizations/Organisations intergouvernementales

International Council for the Exploration of the Sea (ICES)

TIEWS, K.
(see Germany/voir Allemagne)

International Union of Nutritional Sciences

HALVER, J.E.
(see U.S.A./voir Etats Unis d'Amérique)

International Union of Scientific Societies

HALVER, J.E.
(see U.S.A./voir Etats Unis d'Amérique)

Office international des épizooties

FIJAN, N.
(see Yugoslavia/voir Yougoslavie)

Hungarian Organizing Committee

DOBRAI, L.
Head, Fisheries Department
Ministry of Agriculture and Food
Kossuth Lajos tér 11
1860 Budapest V

THURANSZKY, Z.
Liaison Officer
Section Head, Fisheries Department
Ministry of Agriculture and Food
Kossuth Lajos tér 11
1860 Budapest V

MAROCZY, I.

MEDVEGY, A.

SZANTO, J.

FAO Fisheries Department/Departement des pêches de la FAO

LINDQUIST, A.
Director, Fishery Resources and Environment Division/
Directeur, Division des ressources halieutiques et de l'environnement

CHARBONNIER, D.
Secretary of EIFAC/
Secrétaire de la CECPI

COCHE, A.G.
Senior Fishery Resources Officer (Aquaculture)
Inland Water Resources and Aquaculture Service
Fishery Resources and Environment Division/
Fonctionnaire Principal - Ressources halieutiques (Aquaculture)
Service des ressources des eaux intérieurs et de l'aquaculture
Division des ressources halieutiques et de l'environnement

PALLINI, A.
Secretary/Secrétaire

WEBB, J.
Secretary/Secrétaire

WELCOMME, R.L.
Senior Fishery Resources Officer
Fishery Resources and Environment Division/
Fonctionnaire principal - Ressources halieutiques
Division des ressources halieutiques et de l'environnement

UNDP/FAO Project for the Development of Aquaculture in the Mediterranean/
Projet PNUD/FAO pour le développement de l'aquaculture dans la Méditerranée

RUER, Ph.
Associate Expert/Expert associé
Tunis
Tunisia/Tunisie

APPENDIX C
List of Documents Presented to the Session

A. TWELFTH SESSION

B. SYMPOSIUM ON STOCK ENHANCEMENT IN THE MANAGEMENT OF FRESHWATER FISHERIES

1. Prospectus

2. Provisional timetable

3. Abstracts of papers

4. Summary of responses to the questionnaire on stocking fish in Europe

APPENDIX D
Summary of Activities Carried Out by EIFAC During the Intersessional Period

by

K. Tiews
Chairman of EIFAC

During the intersessional period, Sub-Commission I has concentrated, under the leadership of Prof. Backiel, to carefully prepare the Symposium on Stock Enhancement in the Management of Freshwater Fisheries. The Commission very much hopes that the Symposium will contribute also to define guidelines to be followed when introducing non-indigenous fish species and when stocking waters with both native and non-indigenous species, to be applied in European waters.

In order to develop a Cooperative Programme on Lake Fishery Management, as recommended at the last session, a Directory of Inland Fishery Research Institutions and Workers in the Field of Lake Fishery Management and proposals for cooperative research programmes is in preparation under the leadership of Dr P. Tuunainen. In this connexion, a Working Party on Selectivity of Fishing Gear has been set up with Dr Dahm for the Federal Republic of Germany as convenor. Cooperative research has been organized already between Switzerland and the Federal Republic of Germany (see EIFAC/XII/82/4).

The work done by the Working Party on Crayfish headed by Dr K. Westman from Finland is reported in EIFAC/XII/82/5. The preparation of a crayfish synopsis is making good progress.

The joint ICES-EIFAC Working Group on the European Eel met in Hamburg from 20 to 26 June, 1980. When the ICES Anadromous and Catadromous Fish Committee discussed the report of this meeting on the occasion of the 68th Statutory Meeting of ICES in October 1980, it was felt that, since it was not possible to contribute much to the field of stock assessment, which was the primary term of reference to the ICES Working Group, it was proposed that the joint working group be dissolved. In view of this decision and after consulting the officers of Sub-Commission I, I have agreed on behalf of EIFAC to the proposal of ICES. This does, however, not mean that EIFAC has disbanded its-since long-lasting work on eels. It was decided instead to revive the old EIFAC Working Party on Eel, which met in Ferrara during September 1981. The Working Party concentrated on fishing methods, culture, management of resources and biology of eel species of temperate waters (see EIFAC/XII/82/6). In this connexion, I should like to mention that Prof. Colombo from Italy has tried to establish an EIFAC Correspondence Working Party on Elver Recruitment in the Mediterranean. I should like to suggest that the work of this Working Party be reviewed and formal decisions be taken regarding the future of this important exercise, which is to acquire data on elver catches that would permit strict comparison between returns of elvers received from the various sources.

Unfortunately, it was not possible to recruit an associate expert to define ways in which EIFAC might implement the follow-up of the Technical Consultation on the Allocation of Fishery Resources. This is a problem to which the delegates of EIFAC might wish to give consideration, since, as it was stated in the report of our last session, the implementation of the various recommendations of the Consultation regarding development, collection and interpretation of data by the FAO Secretariat will involve a workload in excess of present staff capacities.

The second experiment in the EIFAC Intercalibration Exercise on Fish Sampling Methods in Finnish Lakes was successfully carried out during September 1981 on Konnevesi Lake (see EIFAC/XII/82/7. The Steering Committee of the exercise, which met in Hamburg in June 1981 under my chairmanship, agreed that a third experiment be carried out in October 1983 on the Lake of Constance. Austria and Switzerland will be invited to send observers.

As regards the Sub-Commission II, I would like to start by saying that the report of the Symposium on New Developments in the Utilization of Heated Effluents and Recirculation Systems for Intensive Aquaculture held in conjunction with the 11th Session of EIFAC has been published as EIFAC Technical Paper No. 39 and the proceedings only about 13 months after the Symposium. The proceedings were published in two volumes by Schriften der Bundesforschungsanstalt für Fischerei, Hamburg, with myself as editor.

An ad hoc Correspondence Group started to define terminology, format and unit of measurements related to flow-through systems and to recirculation systems, but could not complete its work until now. It was therefore not possible to prepare the suggested Technical Manual on Bio-engineering Criteria for the Design of Recirculation Systems and Flow-through Systems. Sub-Commission II is requested to discuss means by which the work of the group could be accelerated and, since the present Chairman, Mr Mayo (USA), has withdrawn, to find him a successor.

The fourth session of the EIFAC/COPRAQ - Fish Diseases - was held in Cadiz, Spain, from 26 October to 30 October 1981 (see EIFAC/XII/82/11). Participants are invited to approve the report and to make suggestions for the implementation of the action it suggests.

The recommended Workshop on Prophylactic Measures in Fish Culture originally planned for spring 1982, shall now take place from 28 August to 3 September 1982 in Israel and will be organized by Mr S. Sarig and Mr I. Bejerano from the Laboratory for Research of Fish Diseases at Nir-David and Dr N. Fijan. Another Workshop on the Mass Production of Eggs and Larvae of Warmwater Fish was held successfully at the Warmwater Fish Hatchery in Százhalombatta in Hungary (see EIFAC/XII/82/13). Discussions have been going on with the Sterling University, Scotland, UK, which is willing to host the Symposium on Economics of Small-Scale Aquaculture. However, financial constraints have hampered so far a final decision on the venue of this Symposium which would involve the participation of experts from outside the EIFAC area. Several publishing firms have been approached to ascertain their interest in the Symposium. While they expressed interest in the subject and in the printing of the proceedings, they are not in a position to financially contribute to the Symposium. Delegates are requested to make suggestions on how such a Symposium could be financed.

It is unfortunate that no progress has been made regarding the setting up of an International Convention for the Control of the Spread of Major Communicable Fish Diseases. The eleventh session had noted that the proposed Convention was a matter of interest to the European Economic Community, which intended to issue appropriate regulations. However, EEC had not been in a position to start studies necessary for this legislation and was not, therefore, able to adopt an opinion on the matter. The Director of the FAO Fisheries Department wrote on 13 November 1981 to Mr Poul Dalsager, Commissary to Agriculture, European Community, requesting whether EEC had in the meantime adopted regulations. On 26 January 1982 Mr Dalsager replied that EEC still had no community regulations in this field. Necessary studies to establish such regulations had not yet started. They would begin as soon as possible, taking into account present priorities regarding studies to be carried out by EEC in the veterinary sector.

Sub-Commission III has organized the proposed Workshop on Fish-Farm Effluents which was held in Silkeborg, Denmark, in May 1981 under the chairmanship of Mr J. Alabaster (see EIFAC/XII/82/12). The Workshop suggested that a Working Group be established under the chairmanship of Mr Alabaster to keep the subject up to date. The first meeting of this group will be held on 1 June 1982 and its recommendations submitted to the session.

The Working Party on Water Quality Criteria for European Freshwater Fish held its twentieth meeting in Stevenage on 21 December 1981 to discuss the toxicity of lead, nickel and chromium (see EIFAC/XII/82/14). The session is invited to comment on the future action it proposes.

In 1970 Sub-Commission III held a Mini-Symposium on the Nature and Extent of Water Pollution Problems Affecting Inland Fisheries in Europe. A synthesis of national reports was published in 1972 as EIFAC Technical Paper No. 16. Mr Lloyd, Chairman of Sub-Commission III, indicated that this review was considerably out of date and that updating it should be discussed during the session. Mr Lloyd has prepared the paper “The Use of Microcosms (Model Ecosystems) in the Hazard Assessment of Chemicals to Aquatic Biota” (EIFAC/XII/82/15). The author feels that it could be used as a complement to EIFAC Technical Paper No. 24, “Report on Fish Toxicity Testing Procedures” or to update it. Participants are invited to present their views on this matter.

At the eleventh session, it was requested to establish a Working Party on Habitat Modification which should consider as part of its terms of reference the organization of a second Symposium on Non-Biotic Modifications of the Environment and Fisheries to be held in conjunction with the thirteenth session of EIFAC. The Working Party could not be established during the intersessional period, but it is planned to hold a meeting of an ad hoc Working Party on the evening of 4 June 1982 to prepare the discussion of 5 June on this subject.

A proposal to modify the terms of reference of Sub-Commission III is on the table as paper EIFAC/XII/82/8. Participants are invited to comment on the sphere of activity of the Sub-Commission in relation to that of the other Sub-Commissions.

EIFAC, at its eleventh session, requested that a Draft Code of Practice to Reduce the Risk of Adverse Effects Arising from the Introduction or Transfer of Inland Fish Species be set up by the Organizing Committee for the Symposium on Stock Enhancement in the Management of Freshwater Fisheries. This Draft Code of Practice is presented as document EIFAC/XII/82/17. Participants are invited to consider it with a view to its eventual adoption by the Commission.

The historical review of EIFAC activities, which was prepared by one of the former chairmen of EIFAC, Mr A.V. Holden, for the eleventh session, has been printed in 1981 as EIFAC Occasional Paper No. 13 to give it a wider distribution.

In order to assess the input of EIFAC to the devoloping countries, during the eleventh session EIFAC national correspondents were invited to provide information on the action taken by their countries with respect to technical assistance rendered to developing countries. Replies were received from seven countries and are compiled in document EIFAC/XII/82/19. Unfortunately, not all countries sent their reports. I strongly recommend that this survey be completed because it will demonstrate that considerable activities are going on in the member countries of this Commission to assist the developing countries in the field of inland fisheries development.

APPENDIX E
Report of the Working Party on Cooperative Research Programme on Lake Fisheries Management (COPLAKE)
Budapest, 2 June 1982

1. COLLECTION OF DATA ON INLAND FISHERIES INSTITUTIONS AND WORKERS FROM EUROPE

Twenty-one countries have now replied to requests for information on inland fisheries institutions and workers; however, only six countries have been able to update the information already supplied. Hopefully, the manuscript for a definitive report on this topic will be available by the end of August. Publication will be in the EIFAC Occasional Paper series. This report will then be sent in particular to countries which have not replied with a specific request for submission of data to complete the report.

2. INTERNATIONAL INTERCALIBRATION EXERCISE OF FISH SAMPLING METHODS IN LAKES

A final meeting for the second phase of the Lake Konnevesi experiment was convened on 2 June 1981. The report on the results of this experiment has been prepared by T. Bagenal, E. Dahm, T. Lindem and P. Tuunainen. The report will be published as EIFAC Occasional Paper No. 14 in the near future.

A further series of experiments is being organized for the Bodensee (Lake Constance). Dr Loeffler has undertaken to organize this experiment. Unfortunately, Dr Bagenal has now retired from his post in the Freshwater Biological Association. He has expressed willingness to continue with the exercise in a private capacity, but funding would be needed. Attempts should be made to locate funding from the various participating countries.

Concern was expressed on the accuracy of conventional fish stock estimation methods used in previous experiments. The Group recommended that the organizing committee consider alternative methods such as tagging.

3. DEVELOPMENT AND USE OF HYDROACOUSTIC METHODS FOR FISH-STOCK ASSESSMENT

Problems have arisen for funding future work on this topic. Work on Finnish lakes is currently being evaluated, but continuation of funding is posing problems as current funding for Dr T.F. Lindem ceases on 1 July 1982. Alternative funding may be available but is far from certain and the programme may have to be closed down. Should the programme continue, it is recommended that other countries attempt this method in their own water bodies. The possibility for collaboration with Canada might also be very usefully explored. Hydroacoustic methods are considered as having very great potential for the evaluation of specific types of pelagic fish stocks. It is therefore of high priority that this programme be continued.

4. WILD SALMONID WATCH

It is recommended that individual countries participate in this programme. EIFAC, through COPLAKE, may continue to act as a stimulus to this participation and also to liaise with the Chairman of the Steering Committee (Prof. H. Regier, Canada) and its Secretary (Dr P.S. Maitland, Scotland).

5. SELECTIVITY OF FISHING GEAR

From the eighth session of EIFAC (Aviemore, Scotland, 1974) and the eleventh session (Stavanger, Norway, 1980), it was apparent that, although most countries of EIFAC sample with selective gear, the selectivity of such gear is rarely systematically analysed.

It is therefore proposed that a group of fishery workers should be set up within the general framework of COPLAKE to discuss matters relating to gear selectivity and develop criteria for such sampling methods, under the convenorship of Dr Dahm.

Persons interested in participating will be approached and EIFAC correspondents will also be contacted by Dr Dahm during the intersession to obtain an overview of national research activities involving selectivity and to elaborate a more complete programme.

A bibliography of experience with selectivity in Europe will be compiled and submitted to the next session.

Other topics of specific interest to the group are: selectivity of graded fleets of gillnets, trawls and seine nets.

Progress on the inter-laboratory tests with graded fleets between the Federal Republic of Germany and Switzerland will be made available to the group at a future meeting.

6. FUTURE PROGRAMMES

6.1 Impact of Outdoor Recreation on Lake Ecosystems

In principle, greater emphasis needs to be directed towards management of lakes in the COPLAKE programme. Among such measures should be the consideration of the allocation of the lake recreational resources. A Polish survey shows the extent to which recreational use can detrimentally affect the fisheries resources. The Polish report on the impact of outdoor recreation upon lake ecosystems should be circulated to interested parties throughout Europe. As a practical measure, the COPLAKE programme should attempt to establish guidelines for water use to preserve both commercial and recreational fisheries. The mitigation of side effects of recreational uses other than fishing can be considered during the next symposium on fishery management.

6.2 Acid Rain

COPLAKE is aware of this problem and has requested Sweden and Norway to submit a short report on the status of the problem in Northern Europe and efforts for its mitigation.

6.3 Establishment of a Working Party on Fishing Gear Selectivity

It was recommended that a Working Party on Fishing Gear Selectivity be established to:

1. compile and keep under review the European literature on gear selectivity, and

2. organize and coordinate, as appropriate, international exercises for the definition of selectivity of gear used in sampling and for commercial purposes.

APPENDIX F
Report of the Working Party on Crayfish
Budapest, 2 June 1982

1. The third meeting of the Working Party on Crayfish took place in Budapest, on 2 June 1982.

2. The meeting was attended by:

K. Westman (Convenor) (Finland)
M. Furst (Sweden)
A.S. Habsburgo (Spain)
Z. Thuranszky (Hungary)
M. Pursiainen (Secretary) (Finland)
R.L. Welcomme (FAO)
D. McCarthy (Observer) (Ireland)
S. Stippl (Observer) (Federal Republic of Germany)

3. Consideration of report on the activities of the Working Party

The report on the activities of the Working Party during the intersessional period 1980–82 (EIFAC/XII/82/5) was adopted.

4. Draft report on the status of crayfish stocks and fisheries in Europe (EIFAC/XII/82/Inf. 4)

Replies from certain countries have still to be received; the draft will therefore be further circulated to solicit additional contributions and for correction and updating to the members of the Working Party as well as to all EIFAC correspondents. Key references for each country should also be solicited for inclusion in the document. The report should eventually be published by EIFAC.

5. Draft report on institutes, research workers and programmes relating to research on crayfish (EIFAC/XII/82/Inf.5)

This draft document should be circulated to members of the Working Party and to all EIFAC correspondents for further contributions, correction and updating. The finalized document should eventually be published in the EIFAC Occasional Paper series.

6. Collection of bibliographies on crayfish fisheries in the European countries

This item was identified as one of the priority areas at the first meeting of the Working Party. Contributions have been solicited, but replies have been poor. A further letter requesting contributions will be sent out. It was noted that, in addition to countries mentioned in the report EIFAC/XII/82/5, Spain has prepared a comprehensive bibliography on the subject.

7. Collection of data on introductions of exotic crayfish species

This was identified as a priority item during the first meeting of the Working Party and a considerable body of data is already presented in the document on crayfish stocks (EIFAC/XII/82/Inf.4); so, no further action was felt to be needed.

8. Extension of membership

Extending membership to countries not yet represented in the Working Party depends on the difficulty of getting names of suitable contacts and additional persons could be approached when the list of institutes and workers (EIFAC/XII/82/Inf.5) is completed.

9. Future activities of the Working Party

The Working Party felt that it should proceed with finishing and compiling the present work (Inf. 4 and Inf. 5) and bibliographies. It was also stressed that there is a need to inform European countries about the importance of crayfish utilization and research.

10. Date and place of the fourth meeting of the Working Party

It was agreed that the next meeting should be arranged in the autumn of 1982, preferably in association with another international meeting. The kind offer of Dr P. Laurent to hold the meeting in Thonon, France, was noted. The final date of the meeting will be notified by the Convenor.

APPENDIX G
Report of the Working Party on Allocation of Fishery Resources
Budapest, 4 June 1982

1. The Working Party met on 4 June. Delegates of the following countries participated:

B. Steinmetz (Convenor) (The Netherlands)
M. Bacalbasa (Romania)
M. Bninska (Poland)
J. Dahl (Denmark)
Y. Gillet (France)
M. Leopold (Poland)
J. Moreau (France)
J. O'Connell (Ireland)
K. Pintér (Hungary)
V.K. Salojarvi (Finland)
P. Tuunainen (Finland)

2. The delegates presented the progress made in this specific field since the Vichy Technical Consultation. A number of recommendations resulting from the Consultation were implemented on national as well as on international level.

3. From the discussions and from a letter of Cyprus on this topic, it became clear that the human aspects of recreational fisheries, such as preferences for species and environment, are of main importance for decision-making on allocation and fisheries management problems. It was proposed that an enquiry on research done in the last two years and research needed on these aspects be circulated by the Secretariat to the EIFAC correspondents next spring. This enquiry will be prepared by the Netherlands and Poland.

4. On the basis of these results, a second meeting of the Working Party should take place in between or at the next session. Also, attention will be paid to collaboration with countries outside EIFAC region, such as the USA, which provided already part of the proposed information by correspondence.

5. A number of examples of non-biotic modifications of the environment were given, stressing the need for the planned Symposium in 1984. Moreover, it again became clear that protection of a fishery will gain in force when knowledge of the use and the user, that is to say, attitudes and preferences of the fishermen, are available.

APPENDIX H
Minutes of the Meeting of the Steering Committee of the EIFAC Intercalibration Exercise
Budapest, 2 June 1982

Present: K. Tiews
E. Dahm
T.F. Lindem
H. Loeffler
P. Tuunainen
V.K. Salojärvi

1. Prof. Tiews opened the meeting at 18.00 h on 2 June 1982, welcomed the participants and presented the provisional agenda which was adopted.

2. Dr Loeffler was appointed Rapporteur.

3. Involvement of personnel for the Lake Constance experiment:

3.1 As Dr Bagenal has retired, Dr Le Cren should be requested by the Chairman of EIFAC Sub-Commission I as to whether he could nominate a successor. Dr Bagenal should be contacted too, as there are indications that he is interested in going on with this task.

3.2 Dr Lindem has no new contract until now. He is, however, almost certain that he will be able to continue. The deadline for Dr Lindem's reply is 1 April 1983.

4. Framework of the experiment.

4.1 Dr Loeffler declared that it was not possible to tag whitefish in Lake Constance.

4.2 The processing of the catch statistics was discussed. Possibilities for the increase of accuracy should be verified (see paragraph 5.2.6 b, c, d and e of the minutes of the June 1981 meeting).

4.3 Dr Dahm agreed to send copies of an echosurvey from Lake Constance to Dr Lindem.

4.4 Dr Loeffler agreed that three boats will be available.

4.5 Dr Dahm agreed to bring two trawls and one spare net in case of damage. The trawls will be calibrated before the exercise.

4.6 The exercise can start after 15 October 1983.

4.7 Final planning starts after 1 April 1983. The exercise will be planned to last for two weeks, keeping heavy weather in mind. Echosounding and trawling will be done together for the first two nights. Later, spot samples are considered sufficient. Echosounding is focused on the deep basin of the lake.

5. Personnel involvement.

5.1 Two persons from Hamburg.

5.2 Finland, Norway and United Kingdom will participate.

5.3 The staff needed will come from the Institute of Lake Research and Fisheries, Langenagen, Lake Constance.

5.4 Austria and Switzerland are invited to send observers.

There were no other business. The meeting ended at 19.00 h on 2 June 1982.

APPENDIX I
Report of the First and Second Sessions of the Working Party on Fish-Farm Effluents
Budapest, 1 and 5 June 1982

(REPORT TO SUB-COMMISSIONS II AND III FOR THEIR ENDORSEMENT)

1. The meetings were attended by the following members of the Working Party:

J.S. Alabaster (Convenor) (United Kingdom)
A. Bergheim (Norway)
J.F. Muir (Scotland)
S. Stippl (Federal Republic of Germany)
O. Sumari (Finland)
A. Coche (FAO Technical Secretary)

2. The meetings were also attended by the following observers:

M. Bohl (Federal Republic of Germany)
L. Bull-Berg (Norway)
C. de Angelis (Italy)
V. Dethlefsen (Federal Republic of Germany)
C. Ducarme (Belgium)
N. Fijan (Yugoslavia)
J. From (Denmark)
K. Goryczko (Poland)
B. Holmberg (Sweden)
M.G. Leynaud (France)
R. Lloyd (United Kingdom)
B. Penzes (Hungary)
R. Trzebiatowski (Poland)

3. Following the recommendations made at the eleventh session of EIFAC, an initial Working Party, consisting of Dr J.S. Alabaster, Dr N. Fijan (Chairman, Sub-Commission II), Mr R. Lloyd (Chairman, Sub-Commission III), Mr T. Andersen, Mr J. Dahl and the EIFAC Secretariat, arranged for a Workshop on Fish-Farm Effluents to be held in Denmark in May 1981. The report of the Workshop has been produced as EIFAC Technical Paper No. 41.

4. The present Working Party endorsed the conclusions and recommendations of the Report. However, it was agreed that the Working Party should extend its activities to include cage culture of fish and the proposed terms of reference in EIFAC Technical Paper No. 41 were amended as follows:

1. “to keep review potential and actual water pollution problems arising from fish-farming activities:

   1. identify important problems,

   2. formulate guidelines and advice on appropriate methods for their control, and

   3. report recent development and identify relevant research needs.

2. Sub-Commission II should consider directing its attention to the need to improve fish-feed formulations so as to reduce adverse effects on the quality of water from fish-farm activities.”

5. The Working Party reviewed current international activities relating to problems arising from fish-farming and made the following recommendations:

The Working Party recommends that:

1. tentative guidelines be formulated on the control of concentrations of suspended solids from fish-farming activities;

2. preparation work should begin on the formulation of guidelines for organic and inorganic phosphorus;

3. potential problems from the use of therapeutic agents for the prevention, control and treatment of disease should be kept under review.

6. Representatives from a number of EIFAC countries have expressed their willingness to participate in the proposed programme and a framework and timetable have been agreed.

APPENDIX J
Report of the Twenty-First Meeting of the Working Party on Water Quality Criteria for European Freshwater Fish
Budapest, 1–2 June 1982

The twenty-first meeting of the EIFAC Working Party on Water Quality Criteria for European Freshwater Fish was attended by D. Calamari (Italy), Convenor and R. Lloyd (UK). J.S. Alabaster (UK), V. Dethlefsen (Federal Republic of Germany), M. Grande (Norway), G. Leynaud (France), C. Reizer (Belgium) and G. Schmidt (Belgium) participated as observers.

The following matters were discussed:

A second edition of the EIFAC volume on Water Quality Criteria for Freshwater Fish is published. It includes an updated version of EIFAC Technical Paper No. 37, “Report on combined effects on freshwater fish and other aquatic life of mixtures of toxicants in water”.

A French edition is being sought with French publishers. Plans for a Russian edition are proceeding slowly.

The Chromium report has been presented as a second draft. A final version will be prepared and published with minor amendments. Sub-Commission III is invited to endorse this proposal.

FUTURE PROGRAMMES

After a survey of the literature and a discussion, it has been decided to give priority to nickel. The Working Party will prepare a report on water quality criteria for nickel, possibly by the end of 1982.

The Convenor has received many requests regarding the problem of aluminium. It has therefore been decided to explore the possibility of preparing a report on this subject, for which a wider Working Party will have to be set up. The Convenor will initiate preliminary contacts with experts for that purpose. The possibility to prepare a report on nitrite has also been discussed.

The envisaged updating of the Report “The nature and extent of water pollution problems affecting inland fisheries in Europe”, EIFAC Technical Paper No. 16 (1972) has been considered a good opportunity for identifying new subjects for future reports.

Finally the Working Party, considering the quantity of work and experience accumulated in eighteen years of activity and the world-wide reputation of EIFAC Reports on Water Quality Criteria for European Freshwater Fish, discussed the opportunity of positively extending this experience to developing countries and requested Sub-Commission III to discuss appropriate ways to disseminate the results and the experience of the Working Party to other FAO regional fishery bodies.