Report of the ICES/BSRP Sea-going Workshop on Fish Disease

3,48

MB

Monitoring in the Baltic Sea (WKFDM)

89

stron

3941

ID

International Council for the Explorations of the Sea

2006

rok

Contents

Executive summary 1

1 Opening of the meeting . 2

2 Terms of reference, adoption of the agenda 3

3 General Introduction and rational for the workshop. 3

4 Background information – setting the scene . 5

4.1 Status of wild fish disease monitoring and the role of ICES in intercalibration and standardisation

of methodologies 5

4.1.1 Monitoring of diseases in wild marine fish stocks: the present status . 5

4.1.2 Quality assurance of fish disease monitoring: the role of ICES . 6

4.1.3 How to interpret fish disease data: environmental variables that influence fish diseases and

liver pathology. 7

4.1.4 References 8

4.2 Liver histopathology as a tool in fish disease monitoring . 10

4.2.1 Introduction 10

4.2.2 Guidelines for studies on liver histopathology . 10

4.2.3 Conclusions 11

4.2.4 References 11

4.3 Handling and analysis of fish disease data 12

4.4 Integrated monitoring of contaminant concentrations and their biological effects in the Baltic Sea

environment 13

4.4.1 Introduction 13

4.4.2 Background. 13

4.4.3 Developing an integrated chemical-biological pollution monitoring programme for the Baltic

Sea. 14

4.4.4 The BONUS programme and integrated monitoring of pollution in the Baltic Sea 14

4.4.5 References 15

4.5 Conclusions . 15

4.6 Recommendations . 16

5 National reports on fish disease monitoring 16

5.1 Report from Estonia. 16

5.2 Report from Finland 16

5.3 Report from Germany 17

5.4 Report from Latvia 18

5.5 Report from Lithuania . 19

5.6 Report from Poland . 20

5.7 Report from Russia 21

5.8 Report from Sweden 22

5.9 Report from the United Kingdom 22

5.10 Conclusions . 24

5.11 Recommendations . 24

6 Practical work during the workshop . 25

6.1 Methodology 25

6.1.1 Sampling. 25

6.1.2 Examination for diseases 27

6.1.3 Biomarker sampling 27

6.1.4 Bacteriological sampling 27

6.2 Results of practical work . 27

6.3 On board workshop on liver histopathology 29

6.4 Conclusions . 29

6.5 Recommendations . 29

6.6 References . 29

7 Proposals for assessment tools: development of a fish health index 30

7.1 Introduction . 30

7.2 Example for the construction of a fish health index 30

7.3 Calculation of the fish health index . 31

7.4 Conclusions . 31

7.5 Recommendations . 31

8 Guidelines for fish disease monitoring in the Baltic Sea 35

8.1 Introduction . 35

8.2 Conclusions . 35

8.3 Recommendations . 35

8.4 References . 35

9 General conclusions, analysis of progress with tasks 36

Annex 1: List of participants . 37

Annex 2: WKFDM Terms of Reference 2005 39

Annex 3: Agenda and timetable 40

Annex 4: The status of monitoring liver histopathology in wild marine fish 41

Annex 5: Handling and analysis of fish disease data . 59

Annex 6: Guidelines for fish disease monitoring in the Baltic Sea. 68

Annex 7: Recommendations 85