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

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Contaminants in Tissue of Fish and Crabs Collected in the Gladstone AreaThe original differences were that (on trip one) Fitzroy was significantly higher than both theNarrows and the Port area. The first scenario loses one of these (Fitzroy is no longer different tothe Narrows). The second scenario, whilst having a higher standard error, picks up an extradifference – here Bundaberg is also significantly lower than the Fitzroy mean. The basic result, thatFitzroy on trip one is notably higher than the other sites, remains the same in all these scenarios.For the overall regional means, the original results had higher average Cr on trip one for thereference sites vs. the Gladstone region. The comparable results are now –P-value Reference mean Cr Gladstone mean Cr PercentageOriginal analyses 0.031 0.186 0.098 190Scenario 1 -
Appendix E – Time line BarraBy Johnny Mitchell;Johnny Mitchell's Fishing Charters17 November 2011My name is Johnny Mitchell, and the following article 'Time Line Barra ' was constructedduring my own time. My entire life has been based in or around the ocean and the land. Myexperiences are well spread, having spent time as part of a blue water charter fishingoperation and as an estuary and coastal commercial fisherman. I have been a professionalbarramundi fishing guide in Gladstone for the last five years and a small scale film maker. Ihave completed two films on barramundi, one on mud crabs and one on Spanish mackerel.My number one study fish is the barramundi, a species which I have observed carefully andthoroughly in the local harbour for over two decades and for over 14 years in Lake Awoonga.For about the last 14 years the species has taken up a huge portion of my life, with round theclock study sessions in both fresh and salt to refine and advance my knowledge with thespecies. I have an observant nature which has allowed the opportunity to record informationabout the time line of events from the Awoonga spill of 2010. I enjoy micro scoping any fishysituation.Having lived in Gladstone for almost 37 years and extensively fished Lake Awoonga forbarramundi during the last 14.5 years, the December 12, 2010 spill over event brought with itboth positive and negative vibes. From watching some fish die from the free fall, to ponderingthe success of the mature fish transition there certainly was speculation as to the outcome ofthe event.For the last 20 years, and especially the last 14, barramundi have become my number onestudy priority, personally spending between 250-350 days a year on the water and up to 3sessions a day between salt and fresh water. From true wild fisheries in the CentralQueensland region to the land locked waters of Awoonga I have relished in the challengeand variations between salt water and freshwater barramundi; both an a personal level andas a professional fishing guide.My experiences between the two fisheries are vast.My goal from the flood event was to follow the progression of the lake fish into the saltwaterand to document their movements far and wide, why, because now we had two fisheriesblending as one, 20 years of study blending together in a new chapter on barra- important tome. I witnessed their change in behaviour, and watched their state of health throughout; bothgood and bad.Below is a timeline of information and photographs covering almost 12 months of events andobservations during my time on the water from Rockhampton to Point Richards but usinghome waters of Gladstone Harbour as the central point of study.138
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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
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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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Page 151 and 152: Department of Science, Information
Page 201: Department of Science, Information
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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