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

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Contaminants in Tissue of o Fish and Crabs Collectedin the Gladstone Area5.2. BarramundiThere are no historical data for similar Queensland estuarine and near-coastal sites available tocompare with the results from thecurrent study. The measured concentrations of metalsinbarramundi gills from Gladstone Harbour were similar or less than those fromm the reference sites(Table 10) . The one exception was arsenic which was twice as high in the Gladstone sites than thereference sites, however, this was not a statistically significant difference (P>0.05).The mean measured concentrations of iron and cadmium in barramundi liverss collected during thefirst sampling round were significantly (P≤0. 05) higher at the Gladstone sites (Hamilton Point andUpper Boyne) compared to reference sites (Table 11), and arsenicc and zinc were significantlyhigher in the second sampling round (Table 9). The significantly higher levelss of these metals andmetalloids were drivenby resultss from specimens sampled at Hamilton Point (Figure 14 to Figure17). However, again the small number of samples taken at each site and trip (n=5) means thatthese results should be interpreted with caution.Table 10 – Mean measured concentrations off metals andmetalloidss in barramundi gills (mg/kg dryweight) from Reference and Gladstone Harbour sites.MetalTrip 1Trip 2ReferencesitesGladstonesitessSignificancelevel (P)ReferencesitesGladstonesitesSignificancelevel (P)Aluminiumm ArsenicBariumCadmiumCopperIronMercurySeleniumZinc30.33 1.821.650.0946.044210.3813.633 67.26.13.790.340.0783.922490.2523.3262.70.0000.1190.2330.6250.2200.3070.1250.6790.60014.5 16.02.87 2. 681.97 1. 530.0511 0.0214.62 3. 11393 1730.3933 0.3663.56 3. 1462.1 55.90.7670.8750.6860.3510.3870.2020.7510.5710.482Note: Chromium, lead, nickel and silver had manyy measurements below thee limit of reporting and were notincluded in the analysis. Blue bolded cells indicate a significant difference between the metal concentrations atthe reference and Gladstone sites.Page 21
Department of Science, Information Technology, Innovation and the ArtsTable 11 - Mean measured concentrations of metals and metalloids in barramundi liver (mg/kg dryweight) from Reference and Gladstone Harbour sites.Metal Trip 1 Trip 2ReferenceSitesGladstoneSitesSignificancelevel (P)ReferencesitesGladstoneSitesSignificancelevel (P)Aluminium 2.44 3.30 0.390 2.24 3.97 0.093Arsenic 5.37 7.68 0.140 2.52 6.13 0.026Iron 1695 2782 0.046 969 1550 0.284Cadmium 0.118 0.196 0.035 0.068 0.119 0.165Copper 45.7 37.4 0.726 34.8 19.7 0.529Mercury 0.748 0.779 0.911 0.396 0.586 0.482Selenium 4.69 6.47 0.287 4.41 4.96 0.744Silver 0.163 0.141 0.867 0.245 0.151 0.496Zinc 67.9 89.8 0.124 42.7 71.5 0.048Note: Barium, chromium, lead, nickel and silver had many measurements below the limit of reporting and thuswere not included in the analysis. Blue bolded cells indicate a significant difference occurred between metalconcentrations in barramundi livers collected from Gladstone and Reference sites.4000IronTrip 1Trip 23000200010000Awonga DamBundabergFitzroyHamilton PointUpper BoyneFigure 14 - Mean measured concentrations of iron in barramundi liver (mg/kg dry weight) by site andby tripPage 22
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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
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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
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
Page 151 and 152: Department of Science, Information
Page 169: Department of Science, Information
Page 203 and 204: Appendix E - Time line BarraBy John
Page 205 and 206: friends. Rapidly rising flood water
Page 207 and 208: To make note - condition loss was e
Page 209 and 210: May/June- FinsMy initial observatio
Page 211 and 212: Thes e escapee were now also in awo
Page 213 and 214: Figure N. Barramundi showing net ma
Page 215 and 216: September- Deaths and SicknessFigur
Page 217 and 218: There is numerous distinguishing fe
Page 219: Department of Agriculture, Fisherie
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