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

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Percentage with skin condition > 0100806040200ReferenceGladstoneFitted liney=-30.9 + 8.55 * x0 5 10 15Time since death (hours)Figure 3.2. Mullet skin condition ratings vs. time since death, by regions.For the percentage of fish with a recordable fin condition, for barramundi there was a significant (P =0.006) difference between the regions in the intercepts. The data plus these lines are shown in Figure 3.3(overall R 2 = 70%; P = 0.016). Whilst this relationship was not significant for mullet (R 2 = 11%; P = 0.52),it is shown in Figure 3.4 for comparison.Percentage with fin condition > 050 ReferenceFitted lineGladstone40Fitted line302010y = 12.0 + 1.44 * xy=-8.1 + 1.44 * x00 5 10 15Time since death (hours)Figure 3.3. Barramundi fin condition ratings vs. time since death, by regions.107
Percentage with fin condition > 0151050ReferenceGladstoneFitted liney = 5.1 + 0.43 * x0 5 10 15Time since death (hours)Figure 3.4. Mullet fin condition ratings vs. time since death, by regions.Fish species – The adjusted means, the tests of significance between these, and their average standarderrors are listed in Table 3.4. These results (particularly the number of significant values) confirm theneed for the important ‘location by time’ means to be correctly adjusted for the numbers of fish taken ineach sample.Table 3.4. Effects of fish speci es on the response variables.Sig. level Barra. Bull shark Mullet Queenfish avg. s.e.Hepatosomatic index ** 1.1 8.9 1.4 0.9 0.1Condition score ** 1.3 1.5 1.5 1.1 0.0HAI score * 25.8 32.3 18.1 31.0 3.9% diseased (field) ** 28.7 85.2 23.7 4.3 4.8Skin % > zero (field) ** 21.5 81.6 29.3 0.0 3.9Lesions % > zero (field) ** 12.7 44.3 0.7 4.1 4.0Fins % abnormal 13.4 0.0 7.1 22.0 3.7Gills % abnormal 13.1 0.0 16.2 19.7 3.3Abdomen % tucked up ** 21.9 0.0 1.3 48.0 2.8Liver form % abnormal ** 16.1 35.9 9.7 43.0 7.1Liver colour % discoloured ** 17.0 40.1 14.3 55.0 7.2Parasites % > zero** 17.7 19.2 1.5 30.9 5.9Mesentary fat (%) ** 42.6 0.0 12.4 11.4 4.6* P < 0.05; ** P < 0.01Disease status (as assessed in the field) – The adjusted means, tests of significance and averagestandarderrors for the continuous variables follow in Table 3.5.108
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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
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 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: was a significant (P < 0.05) locati
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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Gladstone Fish Health Investigation 2011 - 2012 - Western Basin ...

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