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

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Table 3.1. Effects of diseas e status on the histology ratingsfor bull sharks.NormalDiseasedAv erage s.e. Sig. level (P)Cumulative score 1.45 0.76 0.54 0.43Gill hyperplasia 1.08 0.23 0.38 0 .19Gill parasites 0.05 0.11 0.19 0.83Liver MMCs 0.00 0.00 NA NASkin lesions 0.16 0.33 0.24 0.65Muscle lesions 0.00 0.13 0.17 0.64Table 3.2. Effects of regi ons on the histology ratings for bull sharks.GladstoneReferenceAverage s.e. Sig. level (P)Cumulative score 0.46 1.19 0.45 0.30Gill hyperplasia 0.00 0.70 0.31 0.14Gill parasites 0.23 0.01 0.15 0.35Liver MMCs 0.00 0.00 NA NASkin lesions 0.40 0.23 0.20 0.58Muscle lesions 0.00 0.17 0.15 0.45For liver lipid, all ten bull sharks were rated as ‘marked’.4. RESULTS – GRINNERLocation by trip meansThese results are listed in Tables 4.1a to 4.1f. These proved to have higher variability, so few significantdifferences were found. Significant‐difference testing is only indicated in Table 4.1c (gill parasites), wheresome differences were found. In the other tables, the lack of superscripts indicates that the means are notproven different. As the locations here are similar to regions, no follow‐up regional comparisons havebeen conducted.Table 4. 1a. Cumulative score.Fitzroy River BundabergGladstone Harbour A vg.s.e.Trip 1 0.60 0.74 0.45Trip 2 1.02 0.89 1.87Table 4. 1b. Gill hyperplasia.Fitzroy River BundabergGladstone Harbour A vg.s.e.Trip 1 0.00 0.38 0.28Trip 2 0.41 0.43 0.18Table 4. 1c. Gill parasites.Fitzroy River BundabergGladstone Harbour A vg.s.e.Trip 1 0.60 ab 0.21 b 0.31Trip 2 0.59 ab 0.00 b 1.21 aa Means with a common superscript are not significantly different (P = 0.05).Table 4. 1d. Liver MMCs.Fitzroy River BundabergGladstone Harbour A vg.s.e.Trip 1 0.00 0.00 0.15Trip 2 0.03 0.12 0.25Table 4. 1e. Skin le sions.Fitzroy River BundabergGladstone Harbour A vg.s.e.Trip 1 0.00 0.02 0.22Trip 2 0.00 0.37 0.22133
Table 4. 1f. Muscle lesions.Fitzroy River BundabergGladstone Harbour A vg.s.e.Trip 1 0.00 0.20 0.10Trip 2 0.00 0.00 0.00For grinners, there was no significant effect of location (P = 0.58) or trip (P = 0.64) on the classification ofliver lipid. Table 4.2 shows that the counts by locations are well distributed across the liver lipidc ategories.Table 4.2. Counts for liver lipid categories b y locations.Fitzroy River Bund aberg Gladstone HarbourAbsent 3 2 2Mild 4 3 4Moderate 2 0 4Marked 1 0 05. RESULTS – MUD CRABSGill hyperplasia and gill parasites were measured for all 40 mud crabs. However, the data forhepatopancreas, hepatopancreas lipid, heart, cuticle lesions and muscle lesions all contained missingobservations. This is unfortunate, as the cumulative score can only be calculated for crabs which have allscores measured, and there are only 19 observations here.Carapace width, gender and crab category were all trialed as covariates. From 21 analyses only two weresignificant (P < 0.05), approximately matching the random expectation of 1.05, so no covariate was usedfor the final analyses. Again, the distributions of the residuals justified the statistical assumption ofuntransformed continuous data under a Normal distribution.Disease status – As listed in Table 5.1, only cuticle lesions showed a significant (P < 0.05) differencebetween abnormal and normal crabs.Table 5.1. Effects of disease status on the histologyratings for m ud crabs.Abnormal NormalAverages.e. Sig. level (P)Cumulative score 2.33 1.95 0.63 0.67Gill hyperplasia 0.64 0.70 0.16 0.77Gill parasites 0.78 0.68 0.15 0.66Hepatopancreas 0.13 0.00 0.08 0.27Heart 0.13 0.13 0.11 1.00Cuticle lesions 0.41 0.00 0.11 0.01Muscle lesions 0.27 0.25 0.17 0.92There was no significant effect (P = 0.40) of disease rating on the classification of hepatopancreas lipid.Table 5.2 shows that the counts are well distributed across the hepatopancreas lipid categories.Table 5.2. Counts for he patopancreas lipidcategories by disease status.AbsentM ild ModerateAbnormal 2 9 4Normal 1 9 9Location by trip meansThese results are listed in Tables 5.3a to 5.3g. Again, significant‐difference testing has only been indicatedon the four tables that had some proven differences amongst the means.Table 5. 3a. Cumulativescore.Bundaberg Fitzroy RiverThe NarrowsPort AreaAvg . s.e.Trip 1 3.43 a 2.94 a 0.81 b 2.00 ab 1.29Trip 2 3.00 a 0.11 b 0.75 b 3.00 aa Means with a common superscript are not significantly different (P = 0.05).134
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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
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 and 106: Appendix A-3: Fish health assessmen
Page 107 and 108: Appendix B - Statistical report: Gl
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: Table 2.3f. Muscle lesions.Lake Fit
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
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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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