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

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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
Page 1: Department of Agriculture, Fisherie
Page 5 and 6: Mullet (Mugilidae) 80Banana prawn (
Page 7 and 8: Figure 7. Barramundi caught in the
Page 9 and 10: Figure 38. Sharks caught in the Cal
Page 11 and 12: Phase 1 (August 2011-February 2012)
Page 13 and 14: The results in this study support t
Page 15 and 16: ecognised expertise and research pu
Page 17 and 18: Mr Mitchell reported high catches u
Page 19 and 20: Figure 2. Sampling sites within the
Page 21 and 22: Phase 2: Expanded Gladstone Fish He
Page 23 and 24: Mud crab (Scylla serrata): Mud crab
Page 25 and 26: For mud crabs, hepatopancreas, gill
Page 27 and 28: Table 2. The number of fish, crusta
Page 29 and 30: Significant findings and discussion
Page 31 and 32: Commercial barramundi catch and cat
Page 33 and 34: Figure 6. Eye condition observed in
Page 35 and 36: Conditions observed in barramundi s
Page 37 and 38: Figure 12. A barramundi caught in t
Page 39 and 40: provided another environmental stre
Page 41 and 42: was somewhat reduced because post-m
Page 43 and 44: 4,000Commercial effort (days fished
Page 45 and 46: Size structure of mud crabs observe
Page 47 and 48: Figure 21. Examples of shell abnorm
Page 49 and 50: Of the 58 crabs observed to have sh
Page 51 and 52: HistopathologyLipid storage vacuola
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Commercial fishing effort for mulle
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Figure 28. (a) Mullet caught in Rod
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June/July: Mullet samples were coll
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Sharks and raysThe monitoring progr
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Observational findings Phase 1Phase
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Encysted larval parasites were foun
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in particular bull sharks, have bee
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Commercial banana prawn catch for t
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Observational findings Phase 2April
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Laboratory testing Phase 1Seven riv
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four displayed signs of redness. Th
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Conditions observed in pelagic fish
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FinfishObservational findingsDuring
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ConclusionsIn 2011, a wide range of
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Mud crabsFisheries Queensland did n
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Owens, L. 1983. Bopyrid isopod Epip
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Candidate speciesThe monitoring pro
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Table 1: Candidate species for each
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Sample processingSample processing
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Herring/grinner/Australian threadfi
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For example: the third specimen, re
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oooGonad - present/absentHepatopanc
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Cloudy eye,swollen,redness orhemorr
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Red pin pointmarks - nogeneral redn
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Lesion photos Description GradeThis
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L4continuedoperculumgrazing;cuts or
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Appendix A-3: Fish health assessmen
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Appendix B - Statistical report: Gl
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analyses, but this was not done for
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was a significant (P < 0.05) locati
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Percentage with fin condition > 015
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Table 3.6b. Effects of locations an
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Table 3.7d. Spleen categories - cou
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32Bundy2Bundy1UpBoyne1UpBoyne2LwBoy
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Table 3.9c. Regional group means an
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Table 4.2c. Effects of locations an
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4.5 Summarising by regionsThe means
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Ta ble 5.2a. Effects of locations a
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5.5 Summarising by regionsThe means
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6.3 ResultsThere was no significant
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Table 6.5 lists the mean values whe
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Standardized residualsStandardized
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Table 2.3f. Muscle lesions.Lake Fit
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Table 4. 1f. Muscle lesions.Fitzroy
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Table 5.6. Regiona l m eans for the
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Contaminants in Tissue ofFish and C
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Contaminants in Tissue of Fish and
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Department of Science, Information
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Appendix E - Time line BarraBy John
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friends. Rapidly rising flood water
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To make note - condition loss was e
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May/June- FinsMy initial observatio
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Thes e escapee were now also in awo
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Figure N. Barramundi showing net ma
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September- Deaths and SicknessFigur
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There is numerous distinguishing fe
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Department of Agriculture, Fisherie
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