R05/1059 l 30/04/2008 Final report on ageing work on key SESSF species from the 2006 sampling year. 2006. Final report on ageing work on key SESSF species from the 2006 sampling year. Kyne Krusic-Golub , Thérèse Stokie, Fabian Trinne and Justin Bell Department of Primary Industries, Fisheries Victoria, PO Box 114 Queenscliff Victoria 3225 April 2008 © Australian Fisheries Management Authority and Department of Primary Industries [2008] This work is copyright. Except as permitted under the Copyright Act 1968 (Cth), no part of this publication may be reproduced by any process, electronic or otherwise, without the specific written permission of the copyright owners. Neither may information be stored electronically in any form whatsoever without such permission. Preferred way to cite: Krusic-Golub, K. and Stokie, T.K. (2008) Final report on the ageing work on key SESSF species from the 2006 sampling year. Final report to Australian Fisheries Management Authority. Project No. R05/1059 99 pp. Published by Fisheries Research Branch, Fisheries Victoria, Department of Primary Industries, Queenscliff, Victoria, 3225. ISBN 978-1-74199-917-4 DISCLAIMER The authors do not warrant that the information in this book is free from errors or omissions. The authors do not accept any form of liability, be it contractual, tortious or otherwise, for the contents of this book or for any consequences arising from its use or any reliance placed upon it. The information, opinions and advice contained in this book may not relate to, or be relevant to, a reader's particular circumstances. Opinions expressed by the authors are the individual opinions of those persons and are not necessarily those of the publisher or research provider. Table of Contents Non-technical Summary...........................................................................................................................................1 Acknowledgments.....................................................................................................................................................1 Background.................................................................................................................................................................1 SET & GHAT..............................................................................................................................................................1 GAB..............................................................................................................................................................................2 Need .............................................................................................................................................................................2 Objectives....................................................................................................................................................................2 Methods.......................................................................................................................................................................3 Procedures...................................................................................................................................................................3 Otolith Collection......................................................................................................................................................3 Otolith reading...........................................................................................................................................................3 Otolith Preparation....................................................................................................................................................4 Transverse Sectioning ............................................................................................................................................4 Longitudinal Sectioning.........................................................................................................................................4 Whole........................................................................................................................................................................4 Reading Procedures...................................................................................................................................................4 Transverse Sectioned Otoliths...............................................................................................................................4 Longitudinal Sectioned Otoliths...........................................................................................................................5 Whole Otoliths ........................................................................................................................................................6 Quality Assurance/Precision ...................................................................................................................................6 Simulation Modelling...............................................................................................................................................7 Results/Discussion ....................................................................................................................................................7 Otolith collection and ageing ..................................................................................................................................7 Data summaries..........................................................................................................................................................7 Simulation modelling...............................................................................................................................................8 Benefits / Management Outcomes..........................................................................................................................8 Conclusion ..................................................................................................................................................................8 References ...................................................................................................................................................................8 Final report on the ageing work on key SESSF species from the 2006 sampling year i Appendix 1 – 2006 Species Summaries ............................................................................................................... 14 Presentation of data ............................................................................................................................................. 14 Blue grenadier (37227001) Macruronus novaezelandiae ..................................................................................... 14 Blue-eye trevalla (37445001) Hyperoglyphe antarctica ....................................................................................... 15 Blue warehou (37445005) Seriolella brama .......................................................................................................... 16 Silver warehou (37445006) Seriolella punctata ................................................................................................... 17 Redfish (37258003) Centroberyx affinis ................................................................................................................ 18 Pink ling (37228002) Genypterus blacodes ........................................................................................................... 19 Eastern gemfish (37439002) Rexea solandri ........................................................................................................ 20 Western gemfish (37439002) Rexea solandri ....................................................................................................... 21 Tiger flathead (37296001) Neoplatycephalus richardsoni .................................................................................... 22 Jackass morwong (37377003) Nemadactylus macropterus ................................................................................. 23 School whiting (37330014) Sillago flindersi ........................................................................................................ 24 Bight redfish (37258004) Centroberyx gerrardi ................................................................................................... 25 Deepwater flathead (37296002) Neoplatycephalus conatus ................................................................................ 26 Ribaldo (37224464) Mora moro ............................................................................................................................ 27 Hapuka (37311006) Polyprion oxygeneios ........................................................................................................... 28 Offshore ocean perch (37287002) Helicolenus barathri ...................................................................................... 29 Mirror dory (37264003) Zenopsis nebulosus ........................................................................................................ 30 Appendix 2 – Historical Otolith Ageing............................................................................................................. 31 Blue grenadier historical – 1984–1986 ..............................................................................................................