Gladstone Fish Health Investigation 2011 - 2012 - Western Basin ...

Gladstone Fish Health Investigation 2011 - 2012 - Western Basin ... Gladstone Fish Health Investigation 2011 - 2012 - Western Basin ...

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21.07.2015 Views

Front cover photo supplied by Johnny Mitchell, as featured in his report Time line BarraThis publication has been compiled by Dr Stephen Wesche, Dr Tim Lucas, Dr David Mayer, DavidWaltisbuhl and Dr Ross Quinn of the Department of Agriculture, Fisheries and Forestry.© State of Queensland, 2013.The Queensland Government supports and encourages the dissemination and exchange of itsinformation. The copyright in this publication is licensed under a Creative Commons Attribution 3.0Australia (CC BY) licence.Under this licence you are free, without having to seek our permission, to use this publication inaccordance with the licence terms.You must keep intact the copyright notice and attribute the State of Queensland as the source of thepublication.For more information on this licence, visit http://creativecommons.org/licenses/by/3.0/au/deed.enThe information contained herein is subject to change without notice. The Queensland Governmentshall not be liable for technical or other errors or omissions contained herein. The reader/user acceptsall risks and responsibility for losses, damages, costs and other consequences resulting directly orindirectly from using this information.

ContentsTable of tables 1Table of figures 1Executive summary 5Phase 1 (August 2011 – February 2012) 6Phase 2 (April 2012 – September 2012) 6Barramundi 6Other species 6Conclusions 7Background 9Stocking in Lake Awoonga 10Calliope and Boyne Rivers flooding event 10Recreational catch 11Phase 1: Fish Health Survey – Gladstone Harbour (August 2011–February 2012) 13Overview 13Study area 13Candidate species 14Sampling regime 14Data collection and processing 15Phase 2: Expanded Gladstone Fish Health Survey (March 2012–September 2012) 16Overview 16Conceptual model 16Study area 17Candidate species 17Sampling regime 18Data collection and processing 18Summary of samples collected 21Significant findings and discussion 24Analysis of all species combined 24Barramundi 25Commercial catch 25Field observational Phase 1 27Laboratory findings Phase 1 28Observational findings Phase 2 29Targeted barramundi surveys to examine Neobenedenia sp. infection 32Laboratory findings Phase 2 34Mud crabs 37Commercial catch 37Crab size structure 38Shell disease and abnormalities 41i

Front cover photo supplied by Johnny Mitchell, as featured in his report Time line BarraThis publication has been compiled by Dr Stephen Wesche, Dr Tim Lucas, Dr David Mayer, DavidWaltisbuhl and Dr Ross Quinn of the Department of Agriculture, <strong>Fish</strong>eries and Forestry.© State of Queensland, 2013.The Queensland Government supports and encourages the dissemination and exchange of itsinformation. The copyright in this publication is licensed under a Creative Commons Attribution 3.0Australia (CC BY) licence.Under this licence you are free, without having to seek our permission, to use this publication inaccordance with the licence terms.You must keep intact the copyright notice and attribute the State of Queensland as the source of thepublication.For more information on this licence, visit http://creativecommons.org/licenses/by/3.0/au/deed.enThe information contained herein is subject to change without notice. The Queensland Governmentshall not be liable for technical or other errors or omissions contained herein. The reader/user acceptsall risks and responsibility for losses, damages, costs and other consequences resulting directly orindirectly from using this information.

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