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

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Figure 22. The percentage of mud crabs with shell abnormalities observed at all sites duringthe Gladstone Fish Health Monitoring Program, Phase 1. Note, (n) refers to the total numberof crabs examined at each site. 42Figure 23. The combined percentage of mud crabs with shell abnormalities observed at allsites during the Gladstone Fish Health Monitoring Program, Phase 2. Note, (n) refers to thetotal number of crabs examined at each site. 43Figure 24. Mullet species encountered during sampling (a) sea mullet; (b) diamond scalemullet; (c) goldspot mullet; (d) bluespot mullet. 47Figure 25. The annual catch of mullet from the Gladstone region (CFish grid S30), asreported in commercial fisher logbooks (calendar years 2000 – 2012). 47Figure 26. The number of days fishing where commercial fishers have reported mullet catchfrom the Gladstone region (CFish grid S30), as reported in commercial fisher logbooks(calendar years 2000 – 2012). 48Figure 27. Conditions observed at each site sampled during Phase 1, September 2011 –January 2012. Note, (n) refers to the total number of fish examined at each site. Some fishmay have been observed with multiple conditions. 49Figure 28. (a) Mullet caught in Rodds Bay displaying minor redness/pinpoint marks on theventral surface and caudal peduncle. The redness around the operculum was a result of thecapture by net; (b) Mullet caught in the Calliope River showing general redness; (c) Mulletcaught in Rodds Bay with ulcerative lesion on the caudal peduncle. 50Figure 29. Minor redness and pinpoint marks observed on fins and the body surface of mulletsampled from the Fitzroy River (a) and (b), and Bundaberg (c) and (d). 51Figure 30. A mullet captured in the lower reaches of the Boyne River with a fresh bite mark 51Figure 31. A mullet sampled from the upper reaches of the Boyne River displaying generalredness and lesions comprised of small areas with detached scales. 52Figure 32. A mullet sampled from the Fitzroy River with ulcerative lesions on (a) the left and(b) right side of the gill covering (operculum), exposing the gills. Note also the cloudy righteye 52Figure 33. The combined results for conditions observed in mullet at all sites sampled duringPhase 2, 2012. Note, (n) refers to the total number of fish examined at each site. Some fishmay have been observed with multiple conditions. 53Figure 34. Bull shark 54Figure 35. The annual catch of shark from the Gladstone region (CFish grid S30), asreported in commercial fisher logbooks (calendar years 2000 – 2011). Data includes both lineand net catch for the region combined. 55Figure 36. The number of days fishing where commercial fishers have reported shark catchfrom the Gladstone region (CFish grid S30), as reported in commercial fisher logbooks(calendar years 2000 – 2011). Data includes both line and net effort for the region combined.55Figure 37 Conditions observed in bull sharks at the time of capture from all sites sampledduring April 2012. Note, (n) refers to the total number of sharks examined at each site. Somesharks may have been observed with multiple conditions. 583
Figure 38. Sharks caught in the Calliope River illustrating the increase in skin redness postmortem. (a) and (c) Shark #0005 and #0007 photographed in the Calliope River at the timeof capture; (b) and (d) The same sharks photographed four hours later in the lab. 59Figure 39. Bull sharks caught at Bundaberg and the Calliope River showing evidence of ectoparasites(lighter areas) between the dorsal fins. 59Figure 40. Banana prawns, a targeted species during the sampling program. 61Figure 41. The annual catch of banana prawns from the Gladstone region (CFish grid S30)as reported in commercial fisher logbooks from calendar years 2000 – 2011. Data includesboth otter trawl and beam trawl catch for the region. 62Figure 42. The number of days fishing where commercial fishers have reported bananaprawn catch from the Gladstone region (CFish grid S30), as reported in commercial fisherlogbooks (calendar years 2000 – 2011). Data includes both otter trawl and beam trawl catcheffort for the region. 62Figure 43. Banana prawns collected during the sampling program from (a) the GladstoneHarbour and (b) offshore Fitzroy River sites showing signs of shell erosion (circled). 64Figure 44. Banana prawns collected during the sampling program with the isopod presentunder the carapace (a) Prawn caught from the offshore Fitzroy River site with an isopodpresent under the carapace (circled); (b) Prawn caught at Bundaberg with part of itscarapace removed to reveal the isopod. 65Figure 45. Queenfish caught at Bundaberg during the sampling program. 67Figure 46 . Conditions observed in queenfish and other pelagic species at each site duringPhase 1. Note, (n) refers to the total number of fish examined at each site. 68Figure 47. Conditions observed in queenfish and other pelagic species at each site duringPhase 2. Note, (n) refers to the total number of fish examined at each site. Some fish mayhave been observed with multiple conditions. 704
Page 1 and 2: Department of Agriculture, Fisherie
Page 3 and 4: ContentsTable of tables 1Table of f
Page 5 and 6: Mullet (Mugilidae) 80Banana prawn (
Page 7: Figure 7. Barramundi caught in the
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
Page 55 and 56: Figure 28. (a) Mullet caught in Rod
Page 57 and 58: 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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Gladstone Fish Health Investigation 2011 - 2012 - Western Basin ...

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