Study Group on Herring Assessment Units in the Baltic Sea

0,49
MB

24
stron

3825
ID International Council for the Explorations of the Sea

2002
rok

TABLE OF CONTENTS

1 INTRODUCTION.

1.1 Terms of Reference

1.2 Participants.

2 BALTIC HERRING STOCK UNITS

3 REVIEW OF STOCK SEPARATION METHODOLOGIES WITHIN CONTEXT OF APPLICABILITY

FOR BALTIC HERRING STOCKS.

3.1 Meristic and morphological characters.

3.2 Otoliths.

3.3 Tagging experiments

3.4 Natural tags

3.5 Genetic studies.

4 IDENTIFIED GAPS IN THE PRESENT KNOWLEDGE

5 OUTLINE OF A DATA SAMPLING STRATEGY FOR STOCK SEPARATION PURPOSES (SEE

FOR INSTANCE GROEGER 2002).

6 RECOMMENDATION ON ASSESSMENT UNITS

6.1 Herring in Sub-divisions 25, 26 and 27

6.2 Herring in Sub-divisions 28 (excluding Gulf of Riga), 29 and 32

6.3 Gulf of Riga herring.

6.4 Assessment results and general comments

7 DESCRIPTION OF THE SEPARATION OF SWEDISH AND DANISH HERRING CATCHES INTO

COASTAL AND OPEN SEA COMPONENTS

8 TUNING DATA FOR THE ASSESSMENTS OF SOUTHERN COAST AND SWEDISH COAST

HERRING IN SUB-DIVISIONS 25–27.

8.1 References

8.2 Working Documents