http://www.ices.dk/sites/pub/Publication%20Reports/Expert%20Group%20Report/mcc/2003/wgpdmo03.pdf

International Council for the Exploration of the Sea
Conseil International pour l’Exploration de la Mer
Palægade 2–4 DK–1261 Copenhagen K Denmark
Mariculture Committee ICES CM 2003/F:03
Ref. ACME
REPORT OF THE
Working Group on Pathology and Diseases of Marine Organisms
Aberdeen, UK
11–15 March 2003
This report is not to be quoted without prior consultation with the
General Secretary. The document is a report of an expert group
under the auspices of the International Council for the Exploration of
the Sea and does not necessarily represent the views of the Council.

TABLE OF CONTENTS
Section Page
i
EXECUTIVE SUMMARY ................................................................................................................................................ 1
1 OPENING AND STRUCTURE OF THE MEETING............................................................................................... 3
2 ICES: ITEMS OF RELEVANCE TO WGPDMO..................................................................................................... 3
2.1 ICES Annual Science Conference 2002.......................................................................................................... 3
2.2 ICES Mariculture Committee (MARC) .......................................................................................................... 4
2.3 ICES Advisory Committee on the Marine Environment (ACME) ................................................................. 4
2.4 Baltic Sea Regional Project (BSRP) ............................................................................................................... 4
3 TERMS OF REFERENCE, ADOPTION OF AGENDA, SELECTION OF RAPPORTEURS................................ 5
3.1 Terms of Reference......................................................................................................................................... 5
3.2 Adoption of the Agenda.................................................................................................................................. 5
3.3 Selection of Rapporteurs................................................................................................................................. 5
4 OTHER RELEVANT INFORMATION.................................................................................................................... 5
5 ANALYSE NATIONAL REPORTS ON NEW DISEASE TRENDS IN WILD AND CULTURED FISH,
MOLLUSCS AND CRUSTACEANS ....................................................................................................................... 6
5.1 Wild Fish......................................................................................................................................................... 6
5.1.1 Conclusions....................................................................................................................................... 8
5.1.2 Recommendations............................................................................................................................. 9
5.2 Farmed fish ..................................................................................................................................................... 9
5.2.1 Conclusions..................................................................................................................................... 12
5.2.2 Recommendations........................................................................................................................... 12
5.3 Wild and Farmed Shellfish ........................................................................................................................... 12
5.3.1 Conclusions..................................................................................................................................... 16
5.3.2 Recommendations........................................................................................................................... 16
6 REPORT ON PROGRESS IN THE ONGOING INVESTIGATIONS OF THE EFFECT OF TEMPERATURE
ON BONAMIA INFECTION DYNAMICS AND REPORT ON THE CONFIRMATION OF THE AGENT OF
CRASSOSTREA ANGULATA GILL DISEASE AND ITS INFECTIVITY TO CRASSOSTREA GIGAS AND
OTHER OYSTERS SPECIES ................................................................................................................................. 17
6.1 Conclusions................................................................................................................................................... 18
6.2 Recommendations......................................................................................................................................... 18
7 REVIEW THE EXISTING STRATEGIES TO ASSESS THE PREVALENCE OF SHELLFISH DISEASES IN
PARALLEL TO FISH DISEASES AND CHEMICAL CONTAMINATION LEVELS IN ENVIRONMENTAL
MONITORING PROGRAMMES. .......................................................................................................................... 18
8 REVIEW OF MOLECULAR TECHNIQUES USED TO DIFFERENTIATE THE VARIOUS
SPECIES/ISOLATES OF PERKINSUS SPP........................................................................................................... 19
9 OBTAIN INFORMATION ON THE EU PROJECT “DIAGNOSIS OF OYSTER HERPES-LIKE VIRUS:
DEVELOPMENT AND VALIDATION OF MOLECULAR, IMMUNOLOGICAL AND CELLULAR TOOLS”
(FAIR-PL98-4334) AND REVIEW THE RESULTS.............................................................................................. 20
10 REVIEW AND REPORT ON PROGRESS MADE IN THE “FISH DISEASES AND LIVER
HISTOPATHOLOGY” COMPONENT OF THE BEQUALM SELF-FUNDING SCHEME. ............................... 21
11 REVIEW AND ASSESS THE IMPACT OF DISEASES OF FARMED FISH ON WILD FISH STOCKS .......... 22
11.1 Conclusions................................................................................................................................................... 22
11.2 Recommendations......................................................................................................................................... 23
12 MAINTAIN AN OVERVIEW OF THE SPREAD OF ICHTHYOPHONUS IN HERRING STOCKS AND THE
DISTRIBUTION AND POSSIBLE CAUSE(S) OF THE M74 SYNDROME........................................................ 23
12.1 Conclusions................................................................................................................................................... 24
12.2 Recommendations......................................................................................................................................... 24
13 ASSESS AND REPORT ON THE EFFECTIVENESS OF SALMON FARMING MANAGEMENT CONTROL
METHODS FOR SEA LICE ................................................................................................................................... 24
13.1 Conclusions................................................................................................................................................... 25
13.2 Recommendations......................................................................................................................................... 25
14 REVIEW PROGRESS MADE IN THE MODIFICATIONS TO THE ICES DATABASES AND REVIEW AND
APPROVE THE REVISED ICES ENVIRONMENTAL DATA REPORTING FORMAT (VERSION 3.2) ........ 25

2003 WGPDMO Report
ii
14.1 Conclusion .................................................................................................................................................... 26
14.2 Recommendations......................................................................................................................................... 26
15 REVIEW THE CRITERIA FOR THE INCORPORATION OF EXTERNALLY VISIBLE FISH DISEASES
INTO MONITORING PROGRAMMES ON BIOLOGICAL EFFECTS OF CONTAMINANTS – AND
PROVIDE FEEDBACK TO WGBEC..................................................................................................................... 26
15.1 Conclusions................................................................................................................................................... 27
15.2 Recommendations......................................................................................................................................... 27
16 REVIEW PROGRESS MADE WITH REGARD TO THE UPDATE OF ICES PUBLICATIONS ON
PATHOLOGY AND DISEASES OF MARINE ORGANISMS ............................................................................. 27
16.1 Web-based report on diseases and parasites of wild and farmed marine fish and shellfish as part of the ICES
environmental status report........................................................................................................................... 27
16.1.1 Conclusions..................................................................................................................................... 27
16.1.2 Recommendations........................................................................................................................... 27
16.2 Manuscript on methods for the statistical analysis of fish disease data for submission to the ICES TIMES
series ............................................................................................................................................................. 27
16.2.1 Conclusion ...................................................................................................................................... 28
16.2.2 Recommendations........................................................................................................................... 28
16.3 Current status of the ICES Identification Leaflets for Diseases and Parasites of Fish and Shellfish............ 28
16.3.1 Conclusions..................................................................................................................................... 28
16.4 Review the status of the cooperative research report “Report on important trends in diseases occurring in
finfish and shellfish culture in the ICES area in the period 1997–2001”...................................................... 29
16.4.1 Conclusion ...................................................................................................................................... 29
16.4.2 Recommendations........................................................................................................................... 29
17 ANY OTHER BUSINESS....................................................................................................................................... 29
17.1 WGPDMO Chair .......................................................................................................................................... 29
17.2 WGPDMO web site ...................................................................................................................................... 29
17.3 Template for national reports on new disease trends in wild and farmed fish, molluscs and crustaceans .... 30
17.4 “Prestige” oil spill......................................................................................................................................... 30
18 PROGRESS WITH TASKS..................................................................................................................................... 30
19 FUTURE ACTIVITIES OF WGPDMO .................................................................................................................. 30
20 APPROVAL OF RECOMMENDATIONS ............................................................................................................. 30
21 APPROVAL OF THE DRAFT WGPDMO REPORT.............................................................................................30
22 CLOSING OF THE MEETING............................................................................................................................... 31
ANNEX 1: LIST OF PARTICIPANTS............................................................................................................................ 32
ANNEX 2: TERMS OF REFERENCE............................................................................................................................ 34
ANNEX 3: AGENDA ...................................................................................................................................................... 36
ANNEX 4: RAPPORTEURS........................................................................................................................................... 37
ANNEX 5: SUMMARY OF STATUS OF ISA IN MAINE, US, IN 2002...................................................................... 39
ANNEX 6: REVIEW OF PATHOLOGIES IN DEMERSAL FISHES OF THE BARENTS SEA AND ADJACENT
WATERS ................................................................................................................................................................. 40
ANNEX 7: REPORT ON ISA IN IRELAND .................................................................................................................. 47
ANNEX 8: MSX AND SSO IN CANADA ..................................................................................................................... 48
ANNEX 9: REVIEW THE EXISTING STRATEGIES TO ASSESS THE PREVALENCE OF SHELLFISH
DISEASES IN PARALLEL TO FISH DISEASES AND CHEMICAL CONTAMINANT LEVELS IN
ENVIRONMENTAL MONITORING PROGRAMMES........................................................................................ 49
ANNEX 10: REVIEW OF MOLECULAR TECHNIQUES USED TO DIFFERENTIATE THE VARIOUS
SPECIES/ISOLATES OF PERKINSUS................................................................................................................... 54
ANNEX 11: OBTAIN INFORMATION ON THE EU PROJECT “DIAGNOSIS OF OYSTER HERPES-LIKE VIRUS:
DEVELOPMENT AND VALIDATION OF MOLECULAR, IMMUNOLOGICAL AND CELLULAR TOOLS”
(FAIR-PL98-4334) AND REVIEW THE RESULTS.............................................................................................. 61

Section Page
iii
ANNEX 12: REVIEW AND REPORT ON PROGRESS MADE IN THE 'FISH DISEASES AND LIVER
HISTOPATHOLOGY' COMPONENT OF THE BEQUALM SELF-FUNDING SCHEME ................................. 66
ANNEX 13: REVIEW AND ASSESS THE IMPACT OF DISEASES OF FARMED FISH ON WILD FISH STOCKS74
ANNEX 14: STRUCTURE OF THE INTEGRATED ICES DATA BASE .................................................................... 80
ANNEX 15: RAW DATA SUBMISSION TABLE FOR TEST OF THE INTEGRATED REPORTING FORMAT
VERSION 3.2 .......................................................................................................................................................... 81
ANNEX 16: REVIEW THE CRITERIA FOR THE INCORPORATION OF EXTERNALLY VISIBLE FISH
DISEASES INTO MONITORING PROGRAMMES ON BIOLOGICAL EFFECTS OF CONTAMINANTS..... 82
ANNEX 17: TENTATIVE TABLE OF CONTENTS OF THE MANUSCRIPT ENTITLED “STATISTICAL
METHODS FOR THE ANALYSIS OF FISH DISEASE DATA”.......................................................................... 92
ANNEX 18: ANALYSIS OF PROGRESS WITH TASKS ............................................................................................. 93
ANNEX 19: RECOMMENDATIONS TO THE ICES COUNCIL.................................................................................. 94
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