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

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Observational findings Phase 1 42Laboratory testing Phase 1 43Laboratory findings Phase 2 44Mullet 46Commercial catch 47Observational findings Phase 1 48Histopathology and residue testing Phase 1 50Observational findings Phase 2 50Laboratory findings Phase 2 53Sharks and rays 54Commercial catch 54Observational findings Phase 1 56Laboratory testing Phase 1 57Observational findings Phase 2 58Laboratory findings Phase 2 60Banana prawns 60Commercial catch 61Observational findings Phase 1 63Laboratory testing Phase 1 63Observational findings Phase 2 64Laboratory testing Phase 2 65Trawl caught finfish species 65Observational findings Phase 1 65Laboratory testing Phase 1 66Observational findings Phase 2 66Laboratory findings Phase 2 66Pelagics 67Observational findings Phase 1 67Histopathology and residue testing Phase 1 68Observational findings Phase 2 69Histopathology and residue testing Phase 2 70Other species 70Scallops 70Finfish 72Conclusions 74Barramundi 74Mullet and other finfish 75Sharks 75Mud crabs 76Summary 76References 77Appendix A – Methods for Expanded Fish Health Sampling Program 79Animal ethics 79Study area 79Candidate species 80Barramundi (Lates calcarifer) 80- ii -
Mullet (Mugilidae) 80Banana prawn (Fenneropenaeus merguiensis) 80Mud crab (Scylla serrata) 80Bull shark (Carcharhinus leucas) 80Trawl species: Grinner (Saurida sp), Australian threadfin (Polydactylus multiradiatus) andCastelnau’s herring (Herklotsichthys castelnaui) 80Pelagic species: Queenfish (Scomberoides sp.) 80Sampling regime 81Timing 81Gear type 81Sampling 83Field observations 83Samples selected for further processing 83Sample processing 84Step 1: Observations and data recorded by field staff at the time of capture. 84Mullet, barramundi, queenfish and sharks 84Mud crabs 84Banana prawns 85Herring/grinner/Australian threadfin 86Specimen identification number 87Step 2: Laboratory processing 88Mullet, barramundi, queenfish and sharks 88Trawl Species: Banana prawns, herring/grinner/Australian threadfin 89Mud crabs 89Appendix A-1: Eye and Skin lesion grading system 91Appendix A – 2 Necropsy data sheets 99Appendix A – 3 Fish health assessment variables 100Appendix B – Statistical report: Gladstone Harbour sampling trips 2012 102Appendix C – Statistical report: Histology results 129Appendix D – Statistical analysis chemical residues 137Appendix E – Time line Barra 138December, 2010- The Overflow 139January, February, March- Mystery and Intrigue. 140April- Booming 143May/June- Fins 144July/ August- Getting Ugly 147September- Deaths and Sickness 150October 152November 153- iii -
Page 1 and 2: Department of Agriculture, Fisherie
Page 3: ContentsTable of tables 1Table of f
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
Page 53 and 54: 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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