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ICES Cooperative Research Report No ICES Cooperative Research Report Rapport des Recherches Collectives No. 274 June 2005 Spawning and life history information for North Atlantic cod stocks Prepared by the ICES/GLOBEC Working Group on Cod and Climate Change Edited by Keith Brander, ICES/GLOBEC Coordinator International Council for the Exploration of the Sea Conseil International pour l’Exploration de la Mer H. C. Andersens Boulevard 44–46 · DK-1553 Copenhagen V · Denmark Telephone + 45 33 38 67 00 · Telefax +45 33 93 42 15 www.ices.dk · [email protected] Recommended format for purposes of citation: ICES. 2005. Spawning and life history information for North Atlantic cod stocks. ICES Cooperative Research Report, No. 274. 152 pp. https://doi.org/10.17895/ices.pub.5478 For permission to reproduce material from this publication, please apply to the General Secretary. ISBN 87-7482-034-6 978-87-7482-362-9 ISSN 2707-7144 Acknowledgements The authorship of the individual stock sections is given at the beginning of each section. Editing such a large body of fairly diverse material has inevitably involved a great deal of checking, re- drafting and consultation with authors and I am extremely grateful to Patricia Brander, Claire Welling and Michala Ovens for the care and patience with which they have completed this task. This publication is a product of the ICES/GLOBEC Cod and Climate Change Programme, which has been supported since 1995 by funding from the National Science Foundation (USA), Department of Environment, Food and Rural Affairs (UK), Department of Fisheries and Oceans (Canada), Norwegian Research Council, Danish Institute for Fisheries Research, Marine Research Institute (Iceland). ICES Cooperative Research Report, No. 274 i Contents 1 Introduction..................................................................................................................................................... 1 Checklist for the synthesis of information on spawning and life history of North Atlantic cod stocks .......... 2 2 Summary tables............................................................................................................................................... 4 3 Spawning checklists and stock summaries.................................................................................................... 11 3.1 Arcto-Norwegian cod.................................................................................................................................... 11 Stock and area of distribution ....................................................................................................................... 11 Time of spawning ......................................................................................................................................... 12 Location of spawning.................................................................................................................................... 13 Biological details .......................................................................................................................................... 13 Recruitment................................................................................................................................................... 14 Migration ...................................................................................................................................................... 15 Adult growth ................................................................................................................................................. 16 References..................................................................................................................................................... 16 3.2 Baltic............................................................................................................................................................. 19 Introduction................................................................................................................................................... 19 Stock and area of distribution ....................................................................................................................... 20 Time of spawning ......................................................................................................................................... 22 Location of spawning.................................................................................................................................... 22 Biological details .......................................................................................................................................... 24 Recruitment................................................................................................................................................... 25 Migration ...................................................................................................................................................... 28 Growth ........................................................................................................................................................ 29 References..................................................................................................................................................... 29 3.3 Celtic Sea and western English Channel (ICES Divisions VII e-k).............................................................. 33 Environment.................................................................................................................................................. 33 Stock and geographic distribution................................................................................................................. 34 Time of spawning ......................................................................................................................................... 35 Location of spawning.................................................................................................................................... 35 Biological details .......................................................................................................................................... 36 Recruitment................................................................................................................................................... 37 Adult growth ................................................................................................................................................. 38 References..................................................................................................................................................... 38 3.4 East and West Greenland .............................................................................................................................. 39 Stock and geographic distribution................................................................................................................. 39 Landings........................................................................................................................................................ 40 Assessment.................................................................................................................................................... 40 Survey information ....................................................................................................................................... 41 Life history information for stock components............................................................................................. 41 Time-series of stock size, SSB and recruitment............................................................................................ 43 Variations in maturity, condition and growth ............................................................................................... 44 Factors affecting larval survival and recruitment variability at West Greenland.......................................... 45 References..................................................................................................................................................... 45 3.5 Cod in Faroese waters................................................................................................................................... 50 Background and physical environment......................................................................................................... 50 Stock and geographic distribution................................................................................................................. 51 Time of spawning ......................................................................................................................................... 52 Location of spawning.................................................................................................................................... 52 Biological details .......................................................................................................................................... 53 Recruitment................................................................................................................................................... 53 Migration ...................................................................................................................................................... 54 Adult growth ................................................................................................................................................
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