DOCSLIB.ORG

Assessment of Juvenile Eel Resources in South Eastern Australia and Associated Development of Intensive Eel Farming for Local Production

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Assessment of Juvenile Eel Resources in South Eastern Australia and Associated Development of Intensive Eel Farming for Local Production ASSESSMENT OF JUVENILE EEL RESOURCES IN SOUTH EASTERN AUSTRALIA AND ASSOCIATED DEVELOPMENT OF INTENSIVE EEL FARMING FOR LOCAL PRODUCTION G J. Gooley, L. J. McKinnon, B. A. Ingram, B. Larkin, R.O. Collins and S.S. de Silva. Final Report FRDC Project No 94/067 FI SHERIE S RESEARCH & DEVELOPMENT Natural Resources CORPOR ATIO N and Environment AGRICULTURE RESOURCES COIISERVAT/Otl ASSESSMENT OF JUVENILE EEL RESOURCES IN SOUTH-EASTERN AUSTRALIA AND ASSOCIATED DEVELOPMENT OF INTENSIVE EEL FARMING FOR LOCAL PRODUCTION G.J Gooley, L.J. McKinnon, B.A. Ingram, B.J. Larkin, R.O. Collins and S.S. De Silva Final Report FRDC Project No 94/067 ISBN 0731143787 Marine and Freshwater Resources Institute, 1999. Copies of this document are available from: Marine and Freshwater Resources Institute Private Bag 20 Alexandra. VIC. 3714. AUSTRALIA.. This publication may be of assistance to you but the State of Victoria and its officers do not guarantee that the publication is without flaw of any kind or is wholly appropriate for your particular purposes and therefore disclaims all liability for error, loss or other consequence which may arise from you relying on any information in this publication. 1 TABLE OF CONTENTS 1 TABLE OF CONTENTS...............................................................................................................................i 2 ACKNOWLEDGMENTS.......................................................................................................................... iii 3 NON-TECHNICAL SUMMARY................................................................................................................! 4 BACKGROUND...........................................................................................................................................3 5 NEED .................................................................................................................................................«^ 6 OBJECTIVES..............................................................................................................................................^ 7 ASSESSMENT COMPONENT .................................................................................................................10 7.1 INTRODUCTION....................................................................................................................................10 7.7.7 MECHANISMS OF GLASS EEL INVASION AND MIGRATION....................................................10 7.7.2 GLASS EEL INVASION AND MIGRATION CUES.........................................................................11 7.1.3 PIGMENTATION AND ASSOCIATED DEVELOPMENTAL STAGES........................................... 12 7.1.4 WORLD FISHERY...........................................................................................................................13 7.7.5 PRESENT STUDY............................................................................................................................ 13 7.2 MATERIALS AND METHODS..............................................................................................................15 7.2.7 5'jr£5£'Z£C7YO^^A®G£^[/S£'£>............................................................................................. 75 7.2.2 FISHING METHODS AND DATA COLLECTED...........................................................................15 7.2.3 DATA ANALYSIS.............................................................................................................................20 7.3 RESULTS.................................................................................................................................................22 7.3.1 CATCH-EFFORT.....................................................................................................................^ 7.3.2 LENGTH-WEIGHT ANALYSIS........................................................................................................23 7.3.3 PIGMENTATION.............................................................................................................................24 7.3.4 BYCATCH........................................................................................................................................24 7.4 DISCUSSION...........................................................................................................................................55 7.4.1 CATCH-EFFORT...:.........................................................................................................................55 7.4.2 MIGRATION AND INVASION CUES..............................................................................................56 7.4.3 LENGTH-WEIGHTANALYSIS........................................................................................................58 7.4.4 PIGMENTATION.............................................................................................................................59 7.4.5 BYCATCH........................................................................................................................................60 8 CULTURE COMPONENT ........................................................................................................................61 8.1 INTRODUCTION...................................................................................................................................^! 8.1.1 BACKGROUND...............................................................................................................................61 8.1.2 FEEDING AND DIET FORMULATION.........................................................................................61 8.1.3 WATER QUALITY............................................................................................................................62 8.1.4 POND CULTURE............................................................................................................................63 8.2 MATERIALS AND METHODS..............................................................................................................65 8.2.1 TANK CULTURE TRIALS...............................................................................................................65 8.2.2 POND CULTURE TRIALS..............................................................................................................68 8.3 RESULTS.................................................................................................................................................71 8.3.1 TANK CULTURE TRIALS...............................................................................................................71 8.3.2 POND CULTURE TRIALS............................................................................................................ 102 8.4 DISCUSSION.........................................................................................................................................106 8.4.1 TANK CULTURE...........................................................................................................................J06 8.4.2 POND CULTURE..........................................................................................................................109 9 BENEFITS.................................................................................................................................................112 9.1 ASSESSMENT COMPONENT BENEFITS .........................................................................................112 9.2 CULTURE COMPONENT OUTCOMES .............................................................................................112 9.3 SUMMARY............................................................................................................................................113 II 10 FURTHER DEVELOPMENT .................................................................................................................114 11 CONCLUSIONS.......................................................................................................................................115 11.1 ASSESSMENT COMPONENT- COMMERCIAL &/OR MANAGEMENT IMPLICATIONS.......... 115 11.2 CULTURE COMPONENT - COMMERCIAL &/OR MANAGEMENT IMPLICATIONS................. 116 12 REFERENCES..........................................................................................................................................118 13 APPENDICES...........................................................................................................................................124 13.1 WTELLECTUAL PROPERTY.............................................................................................................124 13.2 STAFF EMPLOYED ON THE PROJECT............................................................................................124 SEPARATION OF GLASS EELS FROMBTCATCH SNOWY RIVER ENTRANCE WEIGHING GLASS EELS CLEARING COD END OF STOW NET PACKING EELS FOR TRANSPORTATION Ill 2 ACKNOWLEDGMENTS The authors wish to thank the following people who have assisted this project to varying degrees. Marine and Freshwater Resources Institute Richard Gasior, Paul Petraitis, Russell Strongman, Andrew Pickworth, Peter Grant, Peter Ryder, Nathan O'Mahoney, Des Harrington, Anne Gason and Stuart Vallis. Deakin University David Weame Department of Natural Resources and Environment Graham Hanel, lan Westhorpe, lan Carroll and Erroll Parmigiani. Queensland Department of Primary Industries John Beumer. Victorian Eel Fishing Industry Tom Osbome
Load more

Recommended publications
  • Goulburn River Boating Guide
    GOULBURN RIVER BOATING GUIDE Goulburn Broken Catchment Management Authority has prepared the “Goulburn River Boating Guide” to help boaters safely enjoy this recreation venue. Funding to assist with the production of this guide has been made available by the State Government through a grant from the Boating Safety and Facilities Program administered by Marine Safety Victoria. THE WATERWAY Goulburn Broken Catchment Management Authority is the waterway manager appointed under the Marine Act 1988 for the Goulburn River between the Lake Eildon Pondage and Hughes Creek, excluding creeks and streams flowing into the river and storages. This represents a distance of approximately 165 km, much of it isolated. THE BOATING GUIDE Boat operators should recognise that water flow and depths vary during the year, often at very short notice. They should exercise care to ensure that they are operating in a safe fashion appropriate to their location and not adversely impacting on other water users and the environment. The guide is intended to provide information to raise the level of boating safety awareness before people venture onto the river to enjoy the boating experience. The Goulburn River offers a diverse boating and recreational activity environment that attracts people to enjoy fishing, canoeing/kayaking and rafting. The major source of water is Lake Eildon and these waters are used for irrigation in northern Victoria, with the balance flowing into the Murray River. The varying demand for irrigation is one of the reasons for periodic changes to the river that may impact on boating. The Statewide operating rules made under the provisions of the Marine Act 1988 apply to the whole of the Goulburn River between the Eildon Pondage and Hughes Creek (downstream from Seymour).
    [Show full text]
  • Evolutionary Genomics of a Plastic Life History Trait: Galaxias Maculatus Amphidromous and Resident Populations
    EVOLUTIONARY GENOMICS OF A PLASTIC LIFE HISTORY TRAIT: GALAXIAS MACULATUS AMPHIDROMOUS AND RESIDENT POPULATIONS by María Lisette Delgado Aquije Submitted in partial fulfilment of the requirements for the degree of Doctor of Philosophy at Dalhousie University Halifax, Nova Scotia August 2021 Dalhousie University is located in Mi'kma'ki, the ancestral and unceded territory of the Mi'kmaq. We are all Treaty people. © Copyright by María Lisette Delgado Aquije, 2021 I dedicate this work to my parents, María and José, my brothers JR and Eduardo for their unconditional love and support and for always encouraging me to pursue my dreams, and to my grandparents Victoria, Estela, Jesús, and Pepe whose example of perseverance and hard work allowed me to reach this point. ii TABLE OF CONTENTS LIST OF TABLES ............................................................................................................ vii LIST OF FIGURES ........................................................................................................... ix ABSTRACT ...................................................................................................................... xii LIST OF ABBREVIATION USED ................................................................................ xiii ACKNOWLEDGMENTS ................................................................................................ xv CHAPTER 1. INTRODUCTION ....................................................................................... 1 1.1 Galaxias maculatus ..................................................................................................
    [Show full text]
  • Kilmore East Murrindindi Complex South Fire
    KILMORE EAST MURRINDINDI COMPLEX SOUTH FIRE BURNED AREA EMERGENCY STABILIZATION PLAN BIODIVERSITY - FAUNA ASSESSMENT I. OBJECTIVES • Assess the effects of fire and suppression actions to the Threatened and Endangered Species of Victoria, Australia under the Flora and Fauna Guarantee Act 1988 (FFG Act), and the Environment Protection and Biodiversity Conservation Act 1999 • Prescribe emergency stabilization and rehabilitation measures and/or monitoring and assess the effects of these actions to listed species and their designated habitat. II. ISSUES Impacts to Rare or Threatened Species- Seven listed species under the Flora and Fauna Guarantee Act 1988 (FFG Act), (Leadbeater’s Possum [Gymnobelideus leadbeateri], Spotted tree-frog [Litora spenceri], Barred Galaxias [Galaxias olidus var. fuscus], Macquarie Perch (Macquaria australasica), Brush-tailed Phascogale [Phascogale tapoatafa], Powerful Owl [Ninox strenua]), Sooty Owl [Tyto tenebricosa], occur within the fire areas. Leadbeater’s Possum, Barred Galaxias, and Macquarie Perch, are also listed nationally under the Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act) within the fire area. Impacts to these species and their habitats from the fire, suppression actions, and proposed emergency stabilization actions are addressed. III. OBSERVATIONS The purpose of this Burned Area Emergency Response (BAER) Wildlife Assessment is to document the effects of the fire, suppression activities, proposed stabilization treatments, and potential post fire flooding and sediment delivery to listed threatened and endangered fauna species and their preferred habitats within the fire area. This assessment includes effects to species that occur on lands under the tenure of the Department of Sustainability and Environment, Parks Victoria, Goulburn Broken Water Catchment Management Authority, Goulburn Valley Water, Melbourne Water Corporation, and private ownership.
    [Show full text]
  • Natural History and Values of the Kanamaluka/Tamar Estuary Formation, Function and Ecology
    TAMAR ESTUARY AND ESK RIVERS PROGRAM EDUCATION SERIES - FACT SHEET 2 nrmnorth.org.au Natural history and values of the kanamaluka/Tamar estuary Formation, function and ecology The kanamaluka/Tamar estuary is unique in South and North Esk rivers met at the mouth many ways. Fed by five major river systems, it of Corra Lynn Gorge. drains the largest catchment in Tasmania, and Between 35 and 47 million years ago, several the estuary itself is the longest navigable large lava flows occurred in the north, middle estuary in Australia. Home to many unique and southern parts of the valley. The lava and sometimes threatened plant and animal cooled to form basalt. In the middle sections species, it is truly a special place. the basalt capped the old lake sediments, HOW WAS IT FORMED? preserving them from further erosion. This can be seen at Grindelwald, Windermere, and In the early geological history of Tasmania, the north of Hillwood. Tamar Valley didn’t exist and was instead a large peneplain, or dolerite capped lowland Basalt at Rowella and Bell Bay forced the river area, that had been worn down by millions of to keep to its channel, preventing it from years of erosion. From 95 to 65 million years eating sideways into the old sediments and ago, stretching of the earth’s crust created blocking the river for some time at Whirlpool earthquakes that split this peneplain apart, Reach and Bell Bay, creating new lakes in the creating the highland areas of Mt Arthur, Mt valley again, which were eventually breached Barrow and Ben Lomond to the east and the and the Tamar resumed its old course.
    [Show full text]
  • Talk Wild Trout Conference Proceedings 2015
    Talk Wild Trout 2015 Conference Proceedings 21 November 2015 Mansfield Performing Arts Centre, Mansfield Victoria Partners: Fisheries Victoria Editors: Taylor Hunt, John Douglas and Anthony Forster, Freshwater Fisheries Management, Fisheries Victoria Contact email: [email protected] Preferred way to cite this publication: ‘Hunt, T.L., Douglas, J, & Forster, A (eds) 2015, Talk Wild Trout 2015: Conference Proceedings, Fisheries Victoria, Department of Economic Development Jobs Transport and Resources, Queenscliff.’ Acknowledgements: The Victorian Trout Fisher Reference Group, Victorian Recreational Fishing Grants Working Group, VRFish, Mansfield and District Fly Fishers, Australian Trout Foundation, The Council of Victorian Fly Fishing Clubs, Mansfield Shire Council, Arthur Rylah Institute, University of Melbourne, FlyStream, Philip Weigall, Marc Ainsworth, Vicki Griffin, Jarod Lyon, Mark Turner, Amber Clarke, Andrew Briggs, Dallas D’Silva, Rob Loats, Travis Dowling, Kylie Hall, Ewan McLean, Neil Hyatt, Damien Bridgeman, Paul Petraitis, Hui King Ho, Stephen Lavelle, Corey Green, Duncan Hill and Emma Young. Project Leaders and chapter contributors: Jason Lieschke, Andrew Pickworth, John Mahoney, Justin O’Connor, Canran Liu, John Morrongiello, Diane Crowther, Phil Papas, Mark Turner, Amber Clarke, Brett Ingram, Fletcher Warren-Myers, Kylie Hall and Khageswor Giri.’ Authorised by the Victorian Government Department of Economic Development, Jobs, Transport & Resources (DEDJTR), 1 Spring Street Melbourne Victoria 3000. November 2015
    [Show full text]
  • Derwent Catchment Review
    Derwent Catchment Review PART 1 Introduction and Background Prepared for Derwent Catchment Review Steering Committee June, 2011 By Ruth Eriksen, Lois Koehnken, Alistair Brooks and Daniel Ray Table of Contents 1 Introduction ..........................................................................................................................................1 1.1 Project Scope and Need....................................................................................................1 2 Physical setting......................................................................................................................................1 2.1 Catchment description......................................................................................................2 2.2 Geology and Geomorphology ...........................................................................................5 2.3 Rainfall and climate...........................................................................................................9 2.3.1 Current climate ............................................................................................................9 2.3.2 Future climate............................................................................................................10 2.4 Vegetation patterns ........................................................................................................12 2.5 River hydrology ...............................................................................................................12 2.5.1
    [Show full text]
  • Victorian Recreational Fishing Guide 2021
    FREE TARGET ONE MILLION ONE MILLION VICTORIANS FISHING #target1million VICTORIAN RECREATIONAL FISHING A GUIDE TO FISHING RULES AND PRACTICES 2021 GUIDE 2 Introduction 55 Waters with varying bag and size limits 2 (trout and salmon) 4 Message from the Minister 56 Trout and salmon regulations 5 About this guide 60 Year-round trout and salmon fisheries 6 Target One Million 61 Trout and salmon family fishing lakes 9 Marine and estuarine fishing 63 Spiny crays 10 Marine and estuarine scale fish 66 Yabbies 20 Sharks, skates and rays 68 Freshwater shrimp and mussels 23 Crabs INTRODUCTION 69 Freshwater fishing restrictions 24 Shrimps and prawns 70 Freshwater fishing equipment 26 Rock lobster 70 Using equipment in inland waters 30 Shellfish 74 Illegal fishing equipment 33 Squid, octopus and cuttlefish 74 Bait and berley 34 Molluscs 76 Recreational fishing licence 34 Other invertebrates 76 Licence information 35 Marine fishing equipment 78 Your fishing licence fees at work 36 Using equipment in marine waters 82 Recreational harvest food safety 40 Illegal fishing equipment 82 Food safety 40 Bait and berley 84 Responsible fishing behaviours 41 Waters closed to recreational fishing 85 Fishing definitions 41 Marine waters closed to recreational fishing 86 Recreational fishing water definitions 41 Aquaculture fisheries reserves 86 Water definitions 42 Victoria’s marine national parks 88 Regulation enforcement and sanctuaries 88 Fisheries officers 42 Boundary markers 89 Reporting illegal fishing 43 Restricted areas 89 Rule reminders 44 Intertidal zone
    [Show full text]
  • Aquatic Ecology of the Montagu River Catchment
    Aquatic Ecology of the Montagu River Catchment A Report Forming Part of the Requirements for State of Rivers Reporting David Horner Water Assessment and Planning Branch Water Resources Division DPIWE. December, 2003 State of Rivers Aquatic Ecology of the Montagu Catchment Copyright Notice: Material contained in the report provided is subject to Australian copyright law. Other than in accordance with the Copyright Act 1968 of the Commonwealth Parliament, no part of this report may, in any form or by any means, be reproduced, transmitted or used. This report cannot be redistributed for any commercial purpose whatsoever, or distributed to a third party for such purpose, without prior written permission being sought from the Department of Primary Industries, Water and Environment, on behalf of the Crown in Right of the State of Tasmania. Disclaimer: Whilst DPIWE has made every attempt to ensure the accuracy and reliability of the information and data provided, it is the responsibility of the data user to make their own decisions about the accuracy, currency, reliability and correctness of information provided. The Department of Primary Industries, Water and Environment, its employees and agents, and the Crown in the Right of the State of Tasmania do not accept any liability for any damage caused by, or economic loss arising from, reliance on this information. Preferred Citation: DPIWE (2003). State of the River Report for the Montagu River Catchment. Water Assessment and Planning Branch, Department of Primary Industries, Water and Environment, Hobart. Technical Report No. WAP 03/09 ISSN: 1449-5996 The Department of Primary Industries, Water and Environment The Department of Primary Industries, Water and Environment provides leadership in the sustainable management and development of Tasmania’s resources.
    [Show full text]
  • B South Esk Catchment
    B SOUTH ESK CATCHMENT 1.0 Hydrology The South Esk River rises in the North Eastern highlands near Mathinna initially travelling southwards before passing through the Fingal Valley and finally turning northwards and draining into the Tamar River estuary at Launceston. Upstream of the confluences with the Macquarie and Meander rivers the major tributaries include the Break O’Day, St Pauls and Nile rivers. Many smaller streams contribute water to the South Esk mainly from the North- East highlands around Ben Lomond (eg Storeys Creek and Buffalo Brook). 1.1 Historical Background Measurement of river heights in the South Esk River has a long history. Unfortunately these measurements are not always useful indicators of flow due to changes in the channel such as growth and destruction of vegetation, aggradation and scouring of river beds, etc. Such changes provide unstable relationships between gauge height and flow. Nevertheless, many of the gauge height stations continue to be maintained and in many instances are the major tools used for flood warning. The South Esk is a relatively flat river for much of its length and there are often large areas where natural backwaters occur. There are therefore limited opportunities along the river to collect stream flow information and it was not until the 1950's that two reasonable locations were instrumented. These two sites - one at Llewellyn and the other at Perth - have collected streamflow information for around 40 years and are therefore invaluable in assessing the water yields, flood and drought behaviour of the river system. Unfortunately the early record at Llewellyn (prior to 1973) is subject to a major review by the Hydro-Electric Commission and could not be used for this study.
    [Show full text]
  • Download Full Article 2.9MB .Pdf File
    June 1946 MEM. NAT. Mus. V1cT., 14, PT. 2, 1946. https://doi.org/10.24199/j.mmv.1946.14.06 THE SUNKLANDS OF PORT PHILLIP BAY AND BASS STRAIT By R. A. Keble, F.G.S., Palaeontologist, National Jiiiseurn of Victoria. Figs. 1-16. (Received for publication 18th l\fay, 1945) The floors of Port Phillip Bay and Bass Strait were formerly portions of a continuous land surface joining Victoria with Tasmania. This land surface was drained by a river system of which the Riv-er Y arra was part, and was intersected by two orogenic ridges, the Bassian and King Island ridges, near its eastern and western margins respectively. \Vith progressive subsidence and eustatic adjustment, these ridges became land bridges and the main route for the migration of the flora and fauna. At present, their former trend is indicated by the chains of islands in Bass Strait and the shallower portions of the Strait. The history of the development of the River Yarra is largely that of the former land surface and the King Island land bridge, and is the main theme for this discussion. The Yarra River was developed, for the most part, during the Pleistocene or Ice Age. In Tasmania, there is direct evidence of the Ice Age in the form of U-shaped valleys, raised beaches, strandlines, and river terraces, but in Victoria the effects of glaciation are less apparent. A correlation of the Victorian with the Tasmanian deposits and land forms, and, incidentally, with the European and American, can only be obtained by ascertaining the conditions of sedimentation and accumulation of such deposits in Victoria, as can be seen at the surface1 or as have been revealed by bores, particularly those on the N epean Peninsula; by observing the succession of river terraces along the Maribyrnong River; and by reconstructing the floor of Port Phillip Bay, King Bay, and Bass Strait, and interpreting the submerged land forms revealed by the bathymetrical contours.
    [Show full text]
  • Fisheries Victoria
    Talk Wild Trout 2015 Conference Proceedings 21 November 2015 Mansfield Performing Arts Centre, Mansfield Victoria Partners: Fisheries Victoria Editors: Taylor Hunt, John Douglas and Anthony Forster, Freshwater Fisheries Management, Fisheries Victoria Contact email: [email protected] Preferred way to cite this publication: ‘Hunt, T.L., Douglas, J, & Forster, A (eds) 2015, Talk Wild Trout 2015: Conference Proceedings, Fisheries Victoria, Department of Economic Development Jobs Transport and Resources, Queenscliff.’ Acknowledgements: The Victorian Trout Fisher Reference Group, Victorian Recreational Fishing Grants Working Group, VRFish, Mansfield and District Fly Fishers, Australian Trout Foundation, The Council of Victorian Fly Fishing Clubs, Mansfield Shire Council, Arthur Rylah Institute, University of Melbourne, FlyStream, Philip Weigall, Marc Ainsworth, Vicki Griffin, Jarod Lyon, Mark Turner, Amber Clarke, Andrew Briggs, Dallas D’Silva, Rob Loats, Travis Dowling, Kylie Hall, Ewan McLean, Neil Hyatt, Damien Bridgeman, Paul Petraitis, Hui King Ho, Stephen Lavelle, Corey Green, Duncan Hill and Emma Young. Project Leaders and chapter contributors: Jason Lieschke, Andrew Pickworth, John Mahoney, Justin O’Connor, Canran Liu, John Morrongiello, Diane Crowther, Phil Papas, Mark Turner, Amber Clarke, Brett Ingram, Fletcher Warren-Myers, Kylie Hall and Khageswor Giri.’ Authorised by the Victorian Government Department of Economic Development, Jobs, Transport & Resources (DEDJTR), 1 Spring Street Melbourne Victoria 3000. November 2015
    [Show full text]
  • Environmental Water Requirements for the Rubicon River
    Environmental Water Requirements for The Rubicon River Tom Krasnicki Aquatic Ecologist Water Assessment and Planning Branch Water Resources Division DPIWE. Report Series WRA 02/01 May, 2002. Table of Contents ACKNOWLEDGEMENTS i GLOSSARY OF TERMS ii EXECUTIVE SUMMARY 1 1. INTRODUCTION 3 2. THE RUBICON RIVER 3 2.1 General Description 4 2.1.1 Catchment and Drainage System 3 2.1.2 Geomorphology and Geology 6 2.1.3 Climate and Rainfall 7 2.1.4 Vegetation 8 2.1.5 Land Use and Degradation 9 2.1.6 Port Sorell Estuary 9 2.1.7 Hydrology 11 2.2. Site Selection 13 2.2.1 The Rubicon River at Smith and Others Rd. 13 3. VALUES 15 3.1 Community Values 15 3.2 State Technical Values 17 3.3 Endangered species 18 3.4 Values Assessed 19 4. METHODOLOGY 20 4.1 Physical Habitat Data 20 4.2 Biological Data 21 4.2.1 Invertebrates 21 4.2.2 Fish 21 4.3 Hydraulic Simulation 21 4.4 Risk Analysis 22 5. RESULTS 24 5.1 Physical Habitat Data 24 5.2 Biological Data 25 5.3 Risk Analysis 26 6. DISCUSSION 29 6.1 Vertebrate Fauna 30 6.1.1 Mordacia mordax and Geotria australis 30 6.1.2 Gadopsis marmoratus 30 6.1.3 Pseudaphritis urvillii 31 6.1.4 Galaxias truttaceus and Galaxias maculatus 31 6.1.5 Galaxias brevipinnis and Neochanna cleaveri 31 6.1.6 Prototroctes maraena 32 6.1.7 Lovettia sealii and Retropinna tasmanica 32 6.1.8 Anguilla australis 32 6.1.9 Salmo trutta 32 6.1.10 Nannoperca australis and Perca fluviatilis 33 6.2 Invertebrate Fauna 33 6.2.1 Astacopsis gouldi 33 6.3 Flow Recommendations 34 6.3.1 Rubicon River at Smith and Others Rd.
    [Show full text]