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

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Other OT 30Parasites No observed parasites P0 0Few observed parasites P1 10Moderate parasite infestation P2 20Numerous parasites P3 30Reference: Schmitt, C. J. and G. M. Dethloff. editors. 2000. Biomonitoring of Environmental Status and Trends (BEST)Program: selected methods for monitoring chemical contaminants and their effects in aquatic ecosystems. U.S.Geological Survey, Biological Resources Division, Columbia, (MO): Information and Technology Report USGS/BRD‐2000‐‐0005.81 pp.101
Appendix B – Statistical report: Gladstone Harboursampling trips 2012OVERVIEWThis report describes the statistical analyses of the fisheries data collected on two sampling trips, fromtargeted sites around Gladstone Harbour as well as from two reference sites (Fitzroy River andBundaberg). Section 1 outlines the statistical methods employed. Section 2 covers the results for thespecies that were not submitted to the laboratory, and illustrates that there were no apparent problemsamongst these species. The comprehensive Section 3 outlines the results for the important and targetedfish species submitted to the laboratory (barramundi, bull sharks, mullet and queenfish), at both the trip /location level, and then combined into regional comparisons. Sections 4 to 6 then repeat thiscomprehensive presentation of results separately for three key species, namely barramundi, mullet andmudcrabs respectively. For bull sharks, there were insufficient numbers to conduct separate analyses. Forqueenfish, the observed percentages of diseased individuals were too low to warrant separate analyses.1. STATISTICAL METHODSAll analyses were conducted using GenStat (2011). General linear models (McCullagh and Nelder 1989)were used for the continuous variables. Generalised linear models (McCullagh and Nelder 1989) wereadopted for the discrete (categorical) data, using the Poisson distribution with a log link for counts, andthe Binomial distribution with the logit link function for binary (percentage) data.As there was incomplete coverage in the three‐way design matrix (fish by location by trip – see Table 1.1),it was important to account for this in the analyses, and to correctly adjust the resultant means. Figure 1.1demonstrates the large differences between fish species for the hepatosomatic index. This shows that any‘ raw’ averages (for each trip and location) will depend heavily on the balance of fish being caught, inparticular,the number of bull sharks.Table 1.1. Distri bution of catches by species and locations.Barra. Bull shark Grin ner Her ring Mullet Pra wn Queenfish ThreadfinFitzroy R 68 7 115 115 21 200 12 200Bundaberg 20 1 18 110 26 200 36 125Hamilton Pt 31 1 0 0 0 0 0 0Calliope R 23 3 0 0 18 0 14 0Harbour 7 0 46 120 0 174 0 220Spoil Grounds 0 0 0 0 0 0 5 0Upp. Boyne R 21 1 0 0 20 0 0 0Low Boyne R 32 10 0 0 20 0 4 0Rodds Bay 9 0 0 0 20 0 0 0Lake Awoonga 5 0 0 0 0 0 0 0102
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Department of Agriculture, Fisherie
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ContentsTable of tables 1Table of f
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Mullet (Mugilidae) 80Banana prawn (
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Figure 7. Barramundi caught in the
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Figure 38. Sharks caught in the Cal
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Phase 1 (August 2011-February 2012)
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The results in this study support t
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ecognised expertise and research pu
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Mr Mitchell reported high catches u
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Figure 2. Sampling sites within the
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Phase 2: Expanded Gladstone Fish He
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Mud crab (Scylla serrata): Mud crab
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For mud crabs, hepatopancreas, gill
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Table 2. The number of fish, crusta
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Significant findings and discussion
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Commercial barramundi catch and cat
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Figure 6. Eye condition observed in
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Conditions observed in barramundi s
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Figure 12. A barramundi caught in t
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provided another environmental stre
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was somewhat reduced because post-m
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4,000Commercial effort (days fished
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Size structure of mud crabs observe
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Figure 21. Examples of shell abnorm
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Of the 58 crabs observed to have sh
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HistopathologyLipid storage vacuola
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Commercial fishing effort for mulle
Page 55 and 56: Figure 28. (a) Mullet caught in Rod
Page 57 and 58: June/July: Mullet samples were coll
Page 59 and 60: Sharks and raysThe monitoring progr
Page 61 and 62: Observational findings Phase 1Phase
Page 63 and 64: Encysted larval parasites were foun
Page 65 and 66: in particular bull sharks, have bee
Page 67 and 68: Commercial banana prawn catch for t
Page 69 and 70: Observational findings Phase 2April
Page 71 and 72: Laboratory testing Phase 1Seven riv
Page 73 and 74: four displayed signs of redness. Th
Page 75 and 76: Conditions observed in pelagic fish
Page 77 and 78: FinfishObservational findingsDuring
Page 79 and 80: ConclusionsIn 2011, a wide range of
Page 81 and 82: Mud crabsFisheries Queensland did n
Page 83 and 84: Owens, L. 1983. Bopyrid isopod Epip
Page 85 and 86: Candidate speciesThe monitoring pro
Page 87 and 88: Table 1: Candidate species for each
Page 89 and 90: Sample processingSample processing
Page 91 and 92: Herring/grinner/Australian threadfi
Page 93 and 94: For example: the third specimen, re
Page 95 and 96: oooGonad - present/absentHepatopanc
Page 97 and 98: Cloudy eye,swollen,redness orhemorr
Page 99 and 100: Red pin pointmarks - nogeneral redn
Page 101 and 102: Lesion photos Description GradeThis
Page 103 and 104: L4continuedoperculumgrazing;cuts or
Page 105: Appendix A-3: Fish health assessmen
Page 109 and 110: analyses, but this was not done for
Page 111 and 112: was a significant (P < 0.05) locati
Page 113 and 114: Percentage with fin condition > 015
Page 115 and 116: Table 3.6b. Effects of locations an
Page 117 and 118: Table 3.7d. Spleen categories - cou
Page 119 and 120: 32Bundy2Bundy1UpBoyne1UpBoyne2LwBoy
Page 121 and 122: Table 3.9c. Regional group means an
Page 123 and 124: Table 4.2c. Effects of locations an
Page 125 and 126: 4.5 Summarising by regionsThe means
Page 127 and 128: Ta ble 5.2a. Effects of locations a
Page 129 and 130: 5.5 Summarising by regionsThe means
Page 131 and 132: 6.3 ResultsThere was no significant
Page 133 and 134: Table 6.5 lists the mean values whe
Page 135 and 136: Standardized residualsStandardized
Page 137 and 138: Table 2.3f. Muscle lesions.Lake Fit
Page 139 and 140: Table 4. 1f. Muscle lesions.Fitzroy
Page 141 and 142: Table 5.6. Regiona l m eans for the
Page 143 and 144: Contaminants in Tissue ofFish and C
Page 145 and 146: 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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