DOCSLIB.ORG

Oysters Australia IPA – Workshop – Identifying Knowledge Gaps for Development of the Native Oyster Aquaculture Industry in South Australia

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Oysters Australia IPA – Workshop – Identifying Knowledge Gaps for Development of the Native Oyster Aquaculture Industry in South Australia Oysters Australia IPA – Workshop – Identifying Knowledge Gaps for Development of the Native Oyster Aquaculture Industry in South Australia Xiaoxu Li and Penny Miller-Ezzy May 2017 FRDC Project No 2015/229 © 2017 Fisheries Research and Development Corporation and South Australian Research and Development Institute. All rights reserved. ISBN: 978-1-921563-95-9 Oysters Australia IPA – Workshop – Identifying Knowledge Gaps for Development of the Native Oyster Aquaculture Industry in South Australia Project No 2015/229 2017 Ownership of Intellectual property rights Unless otherwise noted, copyright (and any other intellectual property rights, if any) in this publication is owned by the Fisheries Research and Development Corporation and the South Australian Research and Development Institute. This work is copyright. Apart from any use as permitted under the Copyright Act 1968 (Cth), no part may be reproduced by any process, electronic or otherwise, without the specific written permission of the copyright owner. Neither may information be stored electronically in any form whatsoever without such permission. This publication (and any information sourced from it) should be attributed to Li, X. and Miller-Ezzy, P. South Australian Research and Development Institute (Aquatic Sciences) 2017, Oysters Australia IPA – Workshop – Identifying Knowledge Gaps for Development of the Native Oyster Aquaculture Industry in South Australia. Adelaide, May. Creative Commons licence All material in this publication is licensed under a Creative Commons Attribution 3.0 Australia Licence, save for content supplied by third parties, logos and the Commonwealth Coat of Arms. Creative Commons Attribution 3.0 Australia Licence is a standard form licence agreement that allows you to copy, distribute, transmit and adapt this publication provided you attribute the work. A summary of the licence terms is available from creativecommons.org/licenses/by/3.0/au/deed.en. The full licence terms are available from creativecommons.org/licenses/by/3.0/au/legalcode. Inquiries regarding the licence and any use of this document should be sent to: [email protected] Disclaimer The authors warrant that they have taken all reasonable care in producing this report. The report has been through the SARDI internal review process, and has been formally approved for release by the Research Chief, Aquatic Sciences. Although all reasonable efforts have been made to ensure quality, SARDI does not warrant that the information in this report is free from errors or omissions. SARDI does not accept any liability for the contents of this report or for any consequences arising from its use or any reliance placed upon it. Material presented in these Administrative Reports may later be published in formal peer-reviewed scientific literature. The information, opinions and advice contained in this document may not relate, or be relevant, to a readers particular circumstances. Opinions expressed by the authors are the individual opinions expressed by those persons and are not necessarily those of the publisher, research provider or the FRDC. The Fisheries Research and Development Corporation plans, invests in and manages fisheries research and development throughout Australia. It is a statutory authority within the portfolio of the federal Minister for Agriculture, Fisheries and Forestry, jointly funded by the Australian Government and the fishing industry. Researcher Contact Details FRDC Contact Details Name: Xiaoxu Li Address: 25 Geils Court Address: PO Box 120 Deakin ACT 2600 Henley Beach SA 5022 Phone: 02 6285 0400 Phone: 08 8207 5400 Fax: 02 6285 0499 Fax: 08 8207 5406 Email: [email protected] Email: [email protected] Web: www.frdc.com.au In submitting this report, the researcher has agreed to FRDC publishing this material in its edited form. ii Contents Contents ................................................................................................................................................. iii Acknowledgments ................................................................................................................................. iv Executive Summary .............................................................................................................................. v Introduction ........................................................................................................................................... 1 Objectives ............................................................................................................................................... 1 Methods .................................................................................................................................................. 2 Presentations ......................................................................................................................................2 Discussion to identify research and development needs ....................................................................5 Survey to prioritise research and develop needs ................................................................................6 Conclusion and Recommendations ...................................................................................................... 8 Extension and Adoption ........................................................................................................................ 9 References ............................................................................................................................................ 10 Appendix 1: Project Staff ................................................................................................................... 11 Appendix 2: List of Attendees of the Workshop – Identifying Knowledge Gaps for Development of the Native Oyster Aquaculture Industry in South Australia ............................... 12 Appendix 3: Workshop Agenda ......................................................................................................... 13 Appendix 4: Native Oyster R&D Priority Survey ............................................................................ 14 Appendix 5: Advances in Hatchery Production of Flat Oysters ..................................................... 16 Appendix 6: Twenty Years’ Experience in Commercial Flat Oyster Growing: What Have We Learned and Where to in the Future? ........................................................................................ 20 Appendix 7: Conditions to Suit Angasi Oysters ............................................................................... 23 Appendix 8: Angasi Culture in Stansbury ........................................................................................ 29 Appendix 9: Angasi Culture in Kangaroo Island ............................................................................. 32 Appendix 10: Angasi Culture in Coffin Bay ..................................................................................... 34 Appendix 11: Flat Oyster (Ostrea angasi) Reproductive Strategy in SA: Toward Controlling Entire Production Process .................................................................................................................. 37 Appendix 12: Bonamia in Native Oyster Aquaculture in Australia ............................................... 39 Appendix 13: Why Are So Few Angasi Oysters Cultured in Australia? ........................................ 41 Appendix 14: Flat Oyster Aquaculture in New Zealand ................................................................. 43 Figures Figure 1. Results from the 2015-229 “Oysters Australia IPA – post-workshop survey. The survey categories (x-axis) are the research and development needs identified by workshop attendees and the preference score (y-axis) which indicates the importance of each category as ranked by responders (i.e. the higher the score the more important that category was considered) .............. 6 iii Acknowledgments The editors would like to thank everybody who attended the workshop for their valuable input in discussing the current status and future of the native oyster aquaculture industry in Australia. A special thank you to all those who presented for sharing their experiences with growing, breeding, researching and/or marketing flat oysters, and Mr Wayne Hutchinson and Mr Ian Duthie for facilitating the workshop discussions. This project was funded by Oysters Australia and the Fisheries Research and Development Corporation through an industry partnership agreement. iv Executive Summary The 2015-229 “Oysters Australia IPA - workshop - identifying knowledge gaps for development of the native oyster aquaculture industry in South Australia” brought together oyster farmers, hatchery operators and scientists from across Australia to share their knowledge and experience with native oyster (Ostrea angasi) aquaculture and help to identify the key knowledge gaps in the production chain. Through presentations and group discussions, a number of research and development needs were identified. These were categorised into seven key areas: early life history/genetic improvement, farming, oyster health, post-harvest, marketing and branding, industry network and training and education. Across these categories, 19 key research and development needs were identified and prioritised via a post-workshop survey. The following four research and development needs were prioritised as being most important: Having a constant and reliable spat supply;
Load more

Recommended publications
  • National Review of Ostrea Angasi Aquaculture: Historical Culture, Current Methods and Future Priorities
    National review of Ostrea angasi aquaculture: historical culture, current methods and future priorities Christine Crawford Institute of Marine and Antarctic Studies ! [email protected] " secure.utas.edu.au/profles/staff/imas/Christine-Crawford Executive summary Currently in Australia Ostrea angasi oysters (angasi) are being cultured on a small scale, with several farmers growing relatively small numbers of angasis on their predominately Sydney rock or Pacifc oyster farms. Very few farmers are culturing commercially viable quantities of angasi oysters. There are several reasons for this. Although angasi oysters occur in the intertidal zone, they are naturally most abundant in the subtidal and are less tolerant of fuctuating environmental conditions, especially temperature and salinity, than other oyster species. They also have a much shorter shelf life and start to gape after one to two days. Additionally, angasi oysters are susceptible to Bonamiosis, a parasitic disease which has caused major mortalities in several areas. Stress caused by extremes or a combination of factors such as high stocking densities, rough handling, poor food, high temperatures and low salinities have all been observed to increase the prevalence of Bonamiosis. Growth rates of angasi oysters have also been variable, ranging from two to four years to reach market size. From discussions with oyster famers, managers and researchers and from a review of the literature I suggest that the survival and growth of cultured angasi oysters could be signifcantly improved by altering some farm management practices. Firstly, growout techniques need to be specifcally developed for angasi oysters which maintain a low stress environment (not modifcations from other oysters).
    [Show full text]
  • E Urban Sanctuary Algae and Marine Invertebrates of Ricketts Point Marine Sanctuary
    !e Urban Sanctuary Algae and Marine Invertebrates of Ricketts Point Marine Sanctuary Jessica Reeves & John Buckeridge Published by: Greypath Productions Marine Care Ricketts Point PO Box 7356, Beaumaris 3193 Copyright © 2012 Marine Care Ricketts Point !is work is copyright. Apart from any use permitted under the Copyright Act 1968, no part may be reproduced by any process without prior written permission of the publisher. Photographs remain copyright of the individual photographers listed. ISBN 978-0-9804483-5-1 Designed and typeset by Anthony Bright Edited by Alison Vaughan Printed by Hawker Brownlow Education Cheltenham, Victoria Cover photo: Rocky reef habitat at Ricketts Point Marine Sanctuary, David Reinhard Contents Introduction v Visiting the Sanctuary vii How to use this book viii Warning viii Habitat ix Depth x Distribution x Abundance xi Reference xi A note on nomenclature xii Acknowledgements xii Species descriptions 1 Algal key 116 Marine invertebrate key 116 Glossary 118 Further reading 120 Index 122 iii Figure 1: Ricketts Point Marine Sanctuary. !e intertidal zone rocky shore platform dominated by the brown alga Hormosira banksii. Photograph: John Buckeridge. iv Introduction Most Australians live near the sea – it is part of our national psyche. We exercise in it, explore it, relax by it, "sh in it – some even paint it – but most of us simply enjoy its changing modes and its fascinating beauty. Ricketts Point Marine Sanctuary comprises 115 hectares of protected marine environment, located o# Beaumaris in Melbourne’s southeast ("gs 1–2). !e sanctuary includes the coastal waters from Table Rock Point to Quiet Corner, from the high tide mark to approximately 400 metres o#shore.
    [Show full text]
  • Shellfish Reefs at Risk
    SHELLFISH REEFS AT RISK A Global Analysis of Problems and Solutions Michael W. Beck, Robert D. Brumbaugh, Laura Airoldi, Alvar Carranza, Loren D. Coen, Christine Crawford, Omar Defeo, Graham J. Edgar, Boze Hancock, Matthew Kay, Hunter Lenihan, Mark W. Luckenbach, Caitlyn L. Toropova, Guofan Zhang CONTENTS Acknowledgments ........................................................................................................................ 1 Executive Summary .................................................................................................................... 2 Introduction .................................................................................................................................. 6 Methods .................................................................................................................................... 10 Results ........................................................................................................................................ 14 Condition of Oyster Reefs Globally Across Bays and Ecoregions ............ 14 Regional Summaries of the Condition of Shellfish Reefs ............................ 15 Overview of Threats and Causes of Decline ................................................................ 28 Recommendations for Conservation, Restoration and Management ................ 30 Conclusions ............................................................................................................................ 36 References .............................................................................................................................
    [Show full text]
  • Michael W. Beck, Robert D. Brumbaugh, Laura Airoldi Alvar Carranza, Loren D
    Michael W. Beck, Robert D. Brumbaugh, Laura Airoldi Alvar Carranza, Loren D. Coen, Christine Crawford, Omar Defeo, Graham J. Edgar, Boze Hancock, M atthew Kay, Hunter Lenihan, Mark W. Luckenbach, Caitlyn L. Toropova, Guofan Zhang Results. Condition of Oyster Reefs Globally Across Bays and Ecoregions. Regional Summaries of the Condition of Shellfish Reefs Overview of Threats and Causes of Decline. Recommendations for Conservation, Restoration and Management Conclusions References Appendix 1 Michael W. Beck“, Robert D. Brumbaughb, Laura AiroldL, Alvar Carranzad, Loren D. Coen*, Christine Crawfordi Omar Defeod, Graham J. Edgarf, Boze Hancock®, Matthew Kayh, Hunter Lenihan11, Mark W. Luckenbach', Caitlyn L. Toropova“, Guofan Zhang “ The Nature Conservancy, Institute of Marine Sciences, University of California, Santa Cruz, CA, 95060 b b The Nature Conservancy; PO Box 420237, Summerland Key, FL 33042 * Dipartimento di Biología Evoluziomstica Sperimentale, Université di Bologna, Via S. Alberto 163,1-48100 Ravenna, Italy d d Marine Science Unit, Ecology Department, Faculty of Sciences, Montevideo, Uruguay * Sanibel-Captiva Conservation Foundation, 9 0 0 A Tarpon Bay Road, Sanibel, FL 33957 f Tasmanian Aquaculture and Fisheries Institute, University of Tasmania, Hobart, Tasmania, Australia ® The Nature Conservancy; University of Rhode Island, Narragansett, Rl 028882 h Bren School, University of California, Santa Barbara, CA 93106-5131 ' Virginia Institute of Marine Science, College of William and Mary, Wachapreague, VA 23480 i Institute of Oceanology, Chinese Academy of Sciences, Qingdao, Shandong 266071, China Cover photo: Oyster reets at Virginia Coastal Reserve. © Barry T ru itt/T N C © Barry T ru itt/T N C Many colleagues contributed to this assessment by The authors in particular thank Christine Shepard, Zach providing access to data sets ranging from local to global Ferdaña, Jeff Vincent, Antonella Fatone, Ximing Guo, and scales, helping to find important and often obscure Bill Arnold for help with the data, figures and maps.
    [Show full text]
  • Phylogeographic Study of the Dwarf Oyster, Ostreola Stentina
    Marine Biology Archimer, archive institutionnelle de l’Ifremer Volume 150, Number 1, October 2006 http://www.ifremer.fr/docelec/ http://dx.doi.org/10.1007/s00227-006-0333-1 ©2006 Springer Science+Business Media The original publication is available at http://www.springerlink.com ailable on the publisher Web site Phylogeographic study of the dwarf oyster, Ostreola stentina, from Morocco, Portugal and Tunisia: evidence of a geographic disjunction with the closely related taxa, Ostrea aupouria and Ostreola equestris Sylvie Lapègue1, Inès Ben Salah2, Frederico M. Batista3, 4, Serge Heurtebise1, Lassad Neifar2 and Pierre Boudry1 (1) Laboratoire de Génétique et Pathologie, IFREMER, 17390 La Tremblade, France blisher-authenticated version is av (2) Faculté des Sciences de Sfax, Laboratoire d’écobiologie Animale, BP 802, 3038 Sfax, Tunisia (3) Instituto Nacional de Investigação Agrária e das Pescas (INIAP/IPIMAR), CRIPSul, Av. 5 de Outubro, 8700-305 Olhao, Portugal (4) Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, Largo Prof. Abel Salazar, 2, 4099-003 Porto, Portugal Corresponding author : [email protected] Abstract: Despite the economic importance of oysters due to the high aquaculture production of several species, the current knowledge of oyster phylogeny and systematics is still fragmentary. In Europe, Ostrea edulis, the European flat oyster, and Ostreola stentina, the Provence oyster or dwarf oyster, are both present along the European and African, Atlantic and Mediterranean, coasts. In order to document the relationship not only between O. stentina and O. edulis, but also with the other Ostrea and Ostreola species, we performed a sequence analysis of the 16S mitochondrial fragment (16S rDNA: the large subunit rRNA-coding gene) and the COI fragment (COI: cytochrome oxidase subunit I).
    [Show full text]
  • Australian Flat Oyster (Ostrea Angasi) with Bonamia Parasites
    NAAHTWG Slide of the Quarter (January – March 2006) - Australian flat oyster (Ostrea angasi) with Bonamia parasites Cases submitted by Stephen Pyecroft and Judith Handlinger The Fish Health Unit, Mt Pleasant Laboratories, DPIWE, Tasmania Case 1 - 03/0658- 45: Cross section of an Australian flat oyster, Ostrea angasi. Case History The oyster from natural beds at St Helens, was collected during April for routine monitoring. This was part of a series of examinations, at approximately two-year intervals, of a population diagnosed with Bonamia infection approximately one decade previously. Over this period, the beds appeared to remain in good overall health, although some evidence of mortality was seen on several occasions and the extent of the beds was not fully assessed. This oyster was typical of three of 72 oysters examined, the others showing minimal pathology. Histopathology The overall condition is good, with plump Liedig cells indicating abundant glycogen stores, and a high columnar epithelium of most digestive gland tubules, indicating adequate recent feeding. Extensive multi-focal epithelial and sub-epithelial haemocyte infiltrates are present on the palps, main gut (especially stomach) and occasionally digestive gland tubules. Both granulocytes and more hyaline cells are present in the subepithelial reactions, though granulocytes are rarely discernible within the epithelia. In general, no pathogens can be seen in association with these lesions. Epithelial erosion is present in the stomach lesion (plus artefactual loss in some sections). Haemocytes and sloughed epithelial cells are present in the lumen of tubule with focal lesions, as well as in the surrounding interstitium, with necrotic tissue around some affected tubules.
    [Show full text]
  • Ostrea Angasi) Farming Industry in New South Wales
    Paving the way for continued rapid development of the flat (angasi) oyster (Ostrea angasi) farming industry in New South Wales Mike Heasman1, Ben K. Diggles2, David Hurwood3, Peter Mather3, Igor Pirozzi1 and Symon Dworjanyn1 1NSW Fisheries Port Stephens Fisheries Centre Private Bag 1 Nelson Bay NSW 2315 2NIWA Australia Pty Ltd PO Box 359 Wilston Qld 4051 3School of Natural Resource Sciences Queensland University of Technology GPO Box 2434 Brisbane Qld 4001 Final Report to the Department of Transport & Regional Services Project No. NT002/0195 June 2004 NSW Fisheries Final Report Series No. 66 ISSN 1440-3544 Paving the way for continued rapid development of the flat (angasi) oyster (Ostrea angasi) farming industry in New South Wales Mike Heasman1, Ben K. Diggles2, David Hurwood3, Peter Mather3, Igor Pirozzi1 and Symon Dworjanyn1 1NSW Fisheries Port Stephens Fisheries Centre Private Bag 1 Nelson Bay NSW 2315 2NIWA Australia Pty Ltd PO Box 359 Wilston Qld 4051 3School of Natural Resource Sciences Queensland University of Technology GPO Box 2434 Brisbane Qld 4001 Final Report to the Department of Transport & Regional Services Project No. NT002/0195 June 2004 NSW Fisheries Final Report Series No.66 ISSN 1440-3544 Paving the way for continued rapid development of the flat (angasi) oyster (Ostrea angasi) farming in NSW June 2004 Authors: Michael P. Heasman, Ben K. Diggles, David Hurwood and Peter Mather, Igor Pirozzi and Symon Dworjanyn Published By: NSW Fisheries Postal Address: Private Bag 1, Nelson Bay NSW 2315 Internet: www.fisheries.nsw.gov.au NSW Fisheries and the Department of Transport & Regional Services This work is copyright.
    [Show full text]
  • Can Early Exposure to Stress Enhance Resilience to Ocean Warming
    bioRxiv preprint doi: https://doi.org/10.1101/2020.01.21.913715; this version posted January 21, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY 4.0 International license. 1 Can early exposure to stress enhance resilience to ocean warming 2 in two oyster species? 3 Roberta R. C. Pereira1, Elliot Scanes1, Mitchell Gibbs1, Maria Byrne1,2, Pauline M. Ross1,* 4 1School of Life and Environmental Science, The University of Sydney, Camperdown, NSW, Australia, 2School of Medical Sciences, The University of Sydney, Camperdown, NSW, Australia *Corresponding author: [email protected] Running page head: Early exposure to stress and resilience of oysters 5 1 bioRxiv preprint doi: https://doi.org/10.1101/2020.01.21.913715; this version posted January 21, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY 4.0 International license. 6 ABSTRACT 7 Securing economically and ecologically significant molluscs, as our oceans warm and acidify 8 due to climate change, is a global priority. South eastern Australia receives warm water in a 9 strengthening East Australia Current and so resident species are vulnerable to elevated 10 temperature and marine heat waves. This study tested whether oysters pre exposed to 11 elevated temperature or heat stress enhances resilience to ocean warming later in life.
    [Show full text]
  • SHARE OYSTER SHOT Hot Natural OYSTER
    18 Our fishmongers source whole, fresh, 1 local fish from the wholesale markets Atlantic Salmon Sardines Salmo salar Monday to Saturday. We shuck 2 Sardinops neopilchardus SHARE 24. Huonville, TAS 17. Fremantle, WA live oysters and fillet all of our own Bread Sashimi product on premises seven days a garlic bread (v) chef’s choice, pickled ginger, wasabi, 3 week. If you’ve got a craving for it, let or soy, seaweed salad 24 Snapper us know and we will source it! bread board, olive oil, dip 7 Pargus auratus 10. Mornington Peninsula, Salt & Pepper Calamari Port Phillip, VIC 4 wombok salad, crispy shallots, Enjoy some of the finest local Saganaki 27. Leigh, NZ blistered tomatoes, basil 16 house sauce 24 produce Australia has to offer, 17 5 knowing you can indulge in some of 15 Octopus Bass Strait Scallops the most sustainable seafood on the grilled w confit witlof, tomato essence, soy, ginger, mirin, soba noodles or 16 14 boudin noir crumble & sea herbs 24 garlic butter, kataifi 24 Boarfish 6 Barramundi planet right here with us! Paristiopterus labiosus 13 Lates calcarifer 29. New Zealand 18. Northern Australia Pacific Oysters 7 Crassostrea gigas 12 8 Richmond Oysters epitomises Tempura Prawns Mussel Pot 14. Coffin Bay, SA 11 9 soy mirin & ginger, japanese slaw 16 tomato, garlic, onion, white wine or Red Emperor 15. Ceduna, the concept of ocean to plate like Lutjanus sebae Smoky Bay, SA chilli, garlic 19. St Helens, TAS 10 Patagonian Toothfish 1. Port Douglas, QLD nowhere else. Start your journey by or Dissostichus eleginoides 20.
    [Show full text]
  • Review of the Literature on Bivalve Cytogenetics in the Last Ten Years
    Cah. Biol. Mar. (2002) 43 : 17-26 Review of the literature on bivalve cytogenetics in the last ten years Catherine THIRIOT-QUIEVREUX Observatoire Océanologique, Université P. et M. Curie – CNRS - INSU, BP 28, 06230 Villefranche-sur-Mer, France Fax: (33) 4 93 76 38 48; E-mail: [email protected] Abstract: This paper provides a review of the studies on bivalve chromosomes since 1992, in order to gather available data and to highlight the recent progress in different fields of cytogenetics: karyotype and chromosome markers, genome size, aneuploidy, natural and induced polyploidy, and hybridization. Résumé: Revue des travaux des dix dernières années sur l’étude cytogénétique des bivalves. Cet article présente une revue sur l’étude des chromosomes des bivalves depuis 1992 afin de rassembler les données disponibles et de souligner les pro- grès récents dans les différents domaines de la cytogénétique : caryotype et marqueurs chromosomiques, taille du génome, aneuploïdie, polyploïdie naturelle et induite, et hydridisation. Keywords: Bivalvia, Chromosomes, Cytogenetics Introduction review, 1985). Later, the development of banding techniques which allowed chromosome identification in Cytogenetic studies encompass different levels of biological karyotypes began to be applied in bivalves (see Thiriot- organization ranging from the morphological to the Quiévreux review, 1994). Since these reviews, the study of molecular, depending on the applicable technology. bivalve chromosomes has greatly progressed in Chromosomes can be studied as a morphological karyological as well as molecular information, as a result of manifestation of the genome in terms of their routine application of several banding techniques and the microscopically visible size, shape, number and behaviour development of techniques for in situ hybridization.
    [Show full text]
  • Nowhere Else on Earth
    Nowhere Else on Earth: Tasmania’s Marine Natural Values Environment Tasmania is a not-for-profit conservation council dedicated to the protection, conservation and rehabilitation of Tasmania’s natural environment. Australia’s youngest conservation council, Environment Tasmania was established in 2006 and is a peak body representing over 20 Tasmanian environment groups. Prepared for Environment Tasmania by Dr Karen Parsons of Aquenal Pty Ltd. Report citation: Parsons, K. E. (2011) Nowhere Else on Earth: Tasmania’s Marine Natural Values. Report for Environment Tasmania. Aquenal, Tasmania. ISBN: 978-0-646-56647-4 Graphic Design: onetonnegraphic www.onetonnegraphic.com.au Online: Visit the Environment Tasmania website at: www.et.org.au or Ocean Planet online at www.oceanplanet.org.au Partners: With thanks to the The Wilderness Society Inc for their financial support through the WildCountry Small Grants Program, and to NRM North and NRM South. Front Cover: Gorgonian fan with diver (Photograph: © Geoff Rollins). 2 Waterfall Bay cave (Photograph: © Jon Bryan). Acknowledgements The following people are thanked for their assistance The majority of the photographs in the report were with the compilation of this report: Neville Barrett of the generously provided by Graham Edgar, while the following Institute for Marine and Antarctic Studies (IMAS) at the additional contributors are also acknowledged: Neville University of Tasmania for providing information on key Barrett, Jane Elek, Sue Wragge, Chris Black, Jon Bryan, features of Tasmania’s marine
    [Show full text]
  • Feral Oysters from Priority to This, Ongoing Capacity to Maintain the Control Effort Beach Areas
    Caption here. A guide to controlling Pacific oysters in your coastal area. The Pacific oyster was deliberately introduced into species in the wild. However, coordinated efforts through Tasmania over 50 years ago in an attempt to establish the Pacific oyster control program have proven that it a fishery and is now widely spread along the north is achievable and worthwhile to control and maintain and east coasts. It is also found in Victoria, Western oyster-free areas of the coastline, where there are Australia, South Australia, New South Wales and significant ecological, recreational or aesthetic values. southern Queensland. Wild populations of the Pacific With your help it is possible to control this introduced oyster can occur in dense aggregations which can limit species, and make key recreational areas and access food and space available for native intertidal species. points more accessible! Dense aggregations can also limit coastal access and recreational opportunities and can pose a risk of injury Control Strategy as their sharp shells can easily cut through skin. Control programs for the Pacific oyster are labour Thanks to funding from The Tasmanian Community intensive so the appropriateness of control should Fund, the Southern Coastcare Association of Tasmania be considered before any works begin. It is vital that has developed a program in partnership with Coastcare sites are carefully selected based on local amenity, groups, local councils, oyster farmers and the broader recreation and / or environmental values. In addition community to remove feral oysters from priority to this, ongoing capacity to maintain the control effort beach areas. must be considered at the onset, as eradication will not Given what is known about the biology, distribution and happen after one control activity.
    [Show full text]