DOCSLIB.ORG

Gambusia, Gambusia Holbrooki

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Gambusia, Gambusia Holbrooki Assessing the recovery of fish communities following removal of the introduced Eastern Gambusia, Gambusia holbrooki Z. Tonkin, J. Macdonald, D. Ramsey, A. Kaus, F. Hames, D. Crook, and A. King 2011 Arthur Rylah Institute for Environmental Research Technical Report Series No. 232 Arthur Rylah Institute for Environmental Research Technical Series No. 232 Assessing the recovery of fish communities following removal of the introduced Eastern Gambusia, Gambusia holbrooki Zeb Tonkin, Jed Macdonald, David Ramsey, Andrew Kaus, Fern Hames, David Crook and Alison King Arthur Rylah Institute for Environmental Research 123 Brown Street, Heidelberg, Victoria 3084 June 2011 In partnership with the Murray–Darling Basin Authority Native fish recovery following Eastern Gambusia removal Report produced by: Arthur Rylah Institute for Environmental Research Department of Sustainability and Environment PO Box 137 Heidelberg, Victoria 3084 Phone (03) 9450 8600 Website: www.dse.vic.gov.au/ari © Murray-Darling Basin Authority; State of Victoria, Department of Sustainability and Environment 2012 Citation: Tonkin, Z., Macdonald, J., Ramsey, D., Kaus, A., Hames, F., Crook, D. and King, A. (2012). Assessing the recovery of fish communities following removal of the introduced eastern gambusia, Gambusia holbrooki . Arthur Rylah Institute for Environmental Research Technical Report Series No. 232. Department of Sustainability and Environment, Heidelberg, Victoria ISSN 1835-3827 (print) ISSN 1835-3835 (online) ISBN ISBN 978-1-74287-410-4 (Print) Disclaimer: This publication may be of assistance to you but the State of Victoria and its employees 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 any error, loss or other consequence which may arise from you relying on any information in this publication. This work is shared copyright between Murray–Darling Basin Authority and Department of Sustainability and Environment. Graphical and textual information in the work (with the exception of photographs and the MDBA logo) may be stored, retrieved and reproduced in whole or in part, provided the information is not sold or used for commercial benefit and its source (Murray–Darling Basin Authority and Department of Sustainability and Environment) is acknowledged. Such reproduction includes fair dealing for the purpose of private study, research, criticism or review as permitted under the Copyright Act 1968 . Reproduction for other purposes is prohibited without prior permission of the Murray–Darling Basin Authority or the individual photographers and artists with whom copyright applies. To the extent permitted by law, the copyright holders (including its employees and consultants) exclude all liability to any person for any consequences, including but not limited to all losses, damages, costs, expenses and any other compensation, arising directly or indirectly from using this report (in part or in whole) and any information or material contained in it. The contents of this publication do not purport to represent the position of the Murray–Darling Basin Authority. They are presented to inform discussion for improved management of the Basin's natural resources. Funding for this project was provided by the Murray-Darling Basin Authority’s Native Fish Strategy program Accessibility: If you would like to receive this publication in an accessible format, such as large print or audio, please telephone 136 186, or through the National Relay Service (NRS) using a modem or textphone/teletypewriter (TTY) by dialling 1800 555 677, or email [email protected] Front cover photo: Ovens River wetland (background), Seine net haul of Eastern Gambusia and adult female Carp Gudgeon (inset: L-R). Authorised by: Victorian Government, Melbourne iii Native fish recovery following Eastern Gambusia removal Contents List of tables and figures................................................................................................................. vi Acknowledgements........................................................................................................................... x Non-technical summary................................................................................................................. 11 Project background and objectives................................................................................................... 11 Literature review .............................................................................................................................. 11 Cross sectional study........................................................................................................................ 12 Trial of Eastern Gambusia removal.................................................................................................. 13 Cost-effectiveness and logistics of Eastern Gambusia removal....................................................... 14 Conclusions, future research and management recommendations................................................... 15 1 General Introduction and project objectives..................................................................... 16 2 A review of the impact of Eastern Gambusia on native fishes of the Murray–Darling Basin 18 2.1 Eastern Gambusia: biology, ecology and distribution ........................................................... 18 2.1.1 Taxonomy and morphology.................................................................................... 18 2.1.2 Biology and ecology............................................................................................... 19 2.1.3 Global distribution and spread into Australia and the MDB .................................. 22 2.2 Impacts of Gambusia as alien species.................................................................................... 23 2.2.1 Impacts on native fishes.......................................................................................... 23 2.2.2 Impacts on native fishes of the MDB ..................................................................... 26 2.3 Mitigating the impacts of Eastern Gambusia ......................................................................... 29 2.4 Knowledge gaps and the current project................................................................................ 31 3 Phase 1: Cross-sectional study of wetland fish communities across the mid-Murray region of the MDB .......................................................................................................................... 32 3.1 Introduction............................................................................................................................ 32 3.2 Methods.................................................................................................................................. 33 3.2.1 Study area and site selection................................................................................... 33 3.2.2 Water quality and habitat assessment ..................................................................... 34 3.2.3 Fish sampling and processing................................................................................. 34 3.2.4 Statistical analysis and development of correlative models ................................... 37 3.3 Results.................................................................................................................................... 39 3.3.1 Assessment of wetland fish communities of the mid-Murray River ...................... 39 3.3.2 The influence of Eastern Gambusia on species occupancy and abundance ........... 40 3.3.3 The influence of Eastern Gambusia on juvenile condition of native species ......... 46 3.4 Discussion .............................................................................................................................. 49 3.4.1 Assessment of wetland fish communities of the mid-Murray River ...................... 49 3.4.2 The influence of Eastern Gambusia on species occupancy, abundance and condition ................................................................................................................. 54 iv Arthur Rylah Institute for Environmental Research Native fish recovery following Eastern Gambusia removal 3.4.3 Hypotheses on the influence of Eastern Gambusia on wetland fish communities ..59 4 Phase 2: Trial of Eastern Gambusia control ......................................................................60 4.1 Introduction.............................................................................................................................60 4.2 Methodology...........................................................................................................................60 4.2.1 Site description and treatments................................................................................61 4.2.2 Removal of Eastern Gambusia ................................................................................64 4.2.3 Monitoring of fish biota...........................................................................................69 4.2.4 Mark-recapture assessment .....................................................................................69 4.2.5 Analysis...................................................................................................................72 4.3 Results.....................................................................................................................................76
Load more

Recommended publications
  • A Global Assessment of Parasite Diversity in Galaxiid Fishes
    diversity Article A Global Assessment of Parasite Diversity in Galaxiid Fishes Rachel A. Paterson 1,*, Gustavo P. Viozzi 2, Carlos A. Rauque 2, Verónica R. Flores 2 and Robert Poulin 3 1 The Norwegian Institute for Nature Research, P.O. Box 5685, Torgarden, 7485 Trondheim, Norway 2 Laboratorio de Parasitología, INIBIOMA, CONICET—Universidad Nacional del Comahue, Quintral 1250, San Carlos de Bariloche 8400, Argentina; [email protected] (G.P.V.); [email protected] (C.A.R.); veronicaroxanafl[email protected] (V.R.F.) 3 Department of Zoology, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand; [email protected] * Correspondence: [email protected]; Tel.: +47-481-37-867 Abstract: Free-living species often receive greater conservation attention than the parasites they support, with parasite conservation often being hindered by a lack of parasite biodiversity knowl- edge. This study aimed to determine the current state of knowledge regarding parasites of the Southern Hemisphere freshwater fish family Galaxiidae, in order to identify knowledge gaps to focus future research attention. Specifically, we assessed how galaxiid–parasite knowledge differs among geographic regions in relation to research effort (i.e., number of studies or fish individuals examined, extent of tissue examination, taxonomic resolution), in addition to ecological traits known to influ- ence parasite richness. To date, ~50% of galaxiid species have been examined for parasites, though the majority of studies have focused on single parasite taxa rather than assessing the full diversity of macro- and microparasites. The highest number of parasites were observed from Argentinean galaxiids, and studies in all geographic regions were biased towards the highly abundant and most widely distributed galaxiid species, Galaxias maculatus.
    [Show full text]
  • FAMILY Poeciliidae Bonaparte 1831
    FAMILY Poeciliidae Bonaparte 1831 - viviparous toothcarps, livebearers SUBFAMILY Poeciliinae Bonaparte 1831 - viviparous toothcarps [=Unipupillati, Paecilini, Belonesocini, Cyprinodontidae limnophagae, Gambusiinae, Tomeurinae, Poeciliopsinae, Heterandriini, Guirardinini, Cnesterodontini, Pamphoriini, Xiphophorini, Alfarini, Quintanini, Xenodexiinae, Dicerophallini, Scolichthyinae, Priapellini, Brachyrhaphini, Priapichthyini] GENUS Alfaro Meek, 1912 - livebearers [=Furcipenis, Petalosoma, Petalurichthys] Species Alfaro cultratus (Regan, 1908) - Regan's alfaro [=acutiventralis, amazonum] Species Alfaro huberi (Fowler, 1923) - Fowler's alfaro GENUS Belonesox Kner, 1860 - pike topminnows Species Belonesox belizanus Kner, 1860 - pike topminnow [=maxillosus] GENUS Brachyrhaphis Regan, 1913 - viviparous toothcarps [=Plectrophallus, Trigonophallus] Species Brachyrhaphis cascajalensis (Meek & Hildebrand, 1913) - Río Cascajal toothcarp Species Brachyrhaphis episcopi (Steindachner, 1878) - Obispo toothcarp [=latipunctata] Species Brachyrhaphis hartwegi Rosen & Bailey, 1963 - Soconusco gambusia Species Brachyrhaphis hessfeldi Meyer & Etzel, 2001 - Palenque toothcarp Species Brachyrhaphis holdridgei Bussing, 1967 - Tronadora toothcarp Species Brachyrhaphis olomina (Meek, 1914) - Orotina toothcarp Species Brachyrhaphis parismina (Meek, 1912) - Parismina toothcarp Species Brachyrhaphis punctifer (Hubbs, 1926) - Quibari Creek toothcarp Species Brachyrhaphis rhabdophora (Regan, 1908) - Río Grande de Terraba toothcarp [=tristani] Species Brachyrhaphis roseni
    [Show full text]
  • Gambusia Forum 2011
    Gambusia Forum 2011 Crowne Plaza Hotel, Melbourne Wednesday 1st – Thursday 2nd June 2011 Edited by: Dr Peter Jackson and Heleena Bamford Small fish… …big problem! Published by Murray–Darling Basin Authority Postal Address GPO Box 1801, Canberra ACT 2601 Office location Level 4, 51 Allara Street, Canberra City Australian Capital Territory Telephone (02) 6279 0100 international + 61 2 6279 0100 Facsimile (02) 6248 8053 international + 61 2 6248 8053 E-Mail [email protected] Internet http://www.mdba.gov.au For further information contact the Murray–Darling Basin Authority office on (02) 6279 0100 This report may be cited as: Gambusia Forum 2011: Small fish.....big problem! MDBA Publication No. 154/11 ISBN (on-line) 978-1-921914-21-8 ISBN (print) 978-1-921914-22-5 © Copyright Murray–Darling Basin Authority (MDBA), on behalf of the Commonwealth of Australia 2011. This work is copyright. With the exception of photographs, any logo or emblem, and any trademarks, the work may be stored, retrieved and reproduced in whole or in part, provided that it is not sold or used in any way for commercial benefit, and that the source and author of any material used is acknowledged. Apart from any use permitted under the Copyright Act 1968 or above, no part of this work may be reproduced by any process without prior written permission from the Commonwealth. Requests and inquiries concerning reproduction and rights should be addressed to the Commonwealth Copyright Administration, Attorney General’s Department, National Circuit, Barton ACT 2600 or posted at http://www.ag.gov.au/cca.
    [Show full text]
  • NT Ornamentals Government Sumbission
    Committees Select | Sessional | Standing Environment and Sustainable Development Terms of Reference INQUIRY, INVASIVE SPECIES AND MANAGEMENT PROGRAMS The following matter be referred to the Environment and Sustainable Development Committee for inquiry and report - (1) The Northern Territory's capacity to prevent new incursions of invasive species, and to implement effective eradication and management programs for such species already present; and (2) That the committee in its inquiry will: a) begin its investigations by engaging the scientific community to conduct a scientific summit on invasive species; (b) use case studies to inform the analysis, and will draw its case studies from a range of invasive species; (c) while investigating the value of control programs, focus on community based management programs for weeds and feral animal control; and (d) as a result of its investigations and analysis will recommend relevant strategies and protocols for government in dealing with future incursions and current problem species. 1 A Proactive Approach to Reducing Accidental and Intentional Introductions of Ornamental Fish Species into Natural Waters of the Northern Territory: A Case for Control through Minor Legislative Changes and a Public Education Program. Dave Wilson National President ANGFA Inc. PO Box 756 Howard Springs NT 0835 Scoot Andresen Pet Industry of Association Australia NT Coordinator PO Box 3029 Alice Springs NT 0871 Summary This document is intended to outline what the Community and the Aquarium Traders can do toward reducing the risks of the introduction unwanted ornamental species. It gives an alternative view to Fisheries Administrators tendencies to ban everything on the grounds that is the safest thing to do for environmental protection.
    [Show full text]
  • Dwarf Galaxias
    Threatened Species Link www.tas.gov.au SPECIES MANAGEMENT PROFILE Galaxiella pusilla Eastern Dwarf Galaxias Group: Chordata (vertebrates), Actinopterygii (bony fish), Salmoniformes (salmonids), Galaxiidae Status: Threatened Species Protection Act 1995: vulnerable Environment Protection and Biodiversity Conservation Act 1999: Vulnerable Endemic Found in Tasmania and elsewhere Status: A complete species management profile is not currently available for this species. Check for further information on this page and any relevant Activity Advice. Key Points Important: Is this species in your area? Do you need a permit? Ensure you’ve covered all the issues by checking the Planning Ahead page. Important: Different threatened species may have different requirements. For any activity you are considering, read the Activity Advice pages for background information and important advice about managing around the needs of multiple threatened species. Further information ​Check also for listing statement or notesheet pdf above (below the species image). Recovery Plan Cite as: Threatened Species Section (2021). Galaxiella pusilla (Eastern Dwarf Galaxias): Species Management Profile for Tasmania's Threatened Species Link. https://www.threatenedspecieslink.tas.gov.au/Pages/Dwarf-Galaxias.aspx. Department of Primary Industries, Parks, Water and Environment, Tasmania. Accessed on 29/9/2021. Contact details: Threatened Species Section, Department of Primary Industries, Parks, Water and Environment, GPO Box 44, Hobart, Tasmania, Australia, 7001. Phone (1300 368 550). Permit: A permit is required under the Tasmanian Threatened Species Protection Act 1995 to 'take' (which includes kill, injure, catch, damage, destroy and collect), keep, trade in or process any specimen or products of a listed species. Additional permits may also be required under other Acts or regulations to take, disturb or interfere with any form of wildlife or its products, (e.g.
    [Show full text]
  • Approved Conservation Advice for Craterocephalus Fluviatilis (Murray Hardyhead) (S266b of the Environment Protection and Biodiversity Conservation Act 1999)
    This Conservation Advice was approved by the Minister on 3 March 2012 Approved Conservation Advice for Craterocephalus fluviatilis (Murray hardyhead) (s266B of the Environment Protection and Biodiversity Conservation Act 1999) This Conservation Advice has been developed based on the best available information at the time this Conservation Advice was approved; this includes existing plans, records or management prescriptions for this species. Description Craterocephalus fluviatilis, McCulloch 1912, Family Atherinidae, also known as Murray hardyhead, are a small highly mobile schooling fish that attains 76 mm length (Ivantsoff and Crowley, 1996; Ebner and Raadik, 2001; Ellis, 2005). They are moderately deep bodied with a small protrusible mouth which projects forward as a tube when open (Crowley and Ivantsoff, 1990; Ellis, 2005). The colour varies from silver or silvery-green to dark golden dorsally, with a silvery-black (sometimes golden or reddish) mid-lateral stripe running along the body, and a pale abdomen with a silvery iridescent sheen (Crowley and Ivantsoff, 1990; Ellis, 2005; Hammer and Wedderburn, 2008). The body and fins may develop an orange sheen during the spawning period (Ebner and Raadik 2001; Ellis, 2005). Conservation Status The Murray hardyhead is listed as endangered. This species is eligible for listing as endangered under the Environment Protection and Biodiversity Conservation Act 1999 (Cwlth) (EPBC Act) as: it has undergone a severe reduction in numbers in the last 10 years, and recovery may depend upon translocations or restocking of hatchery-bred fish, and it has a restricted area of occupancy, which is precarious for the species’ survival due to ongoing threats (TSSC, 2011).
    [Show full text]
  • Molecular and Morphometric Evidence for the Widespread Introduction Of
    BioInvasions Records (2017) Volume 6, Issue 3: 281–289 Open Access DOI: https://doi.org/10.3391/bir.2017.6.3.14 © 2017 The Author(s). Journal compilation © 2017 REABIC Research Article Molecular and morphometric evidence for the widespread introduction of Western mosquitofish Gambusia affinis (Baird and Girard, 1853) into freshwaters of mainland China Jiancao Gao1, Xu Ouyang1, Bojian Chen1, Jonas Jourdan2 and Martin Plath1,* 1College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, P.R. China 2Department of River Ecology and Conservation, Senckenberg Research Institute and Natural History Museum Frankfurt, Gelnhausen, Germany *Corresponding author E-mail: [email protected] Received: 6 March 2017 / Accepted: 9 July 2017 / Published online: 31 July 2017 Handling editor: Marion Y.L. Wong Abstract Two North American species of mosquitofish, the Western (Gambusia affinis Baird and Girard, 1853) and Eastern mosquitofish (G. holbrooki Girard, 1859), rank amongst the most invasive freshwater fishes worldwide. While the existing literature suggests that G. affinis was introduced to mainland China, empirical evidence supporting this assumption was limited, and the possibility remained that both species were introduced during campaigns attempting to reduce vectors of malaria and dengue fever. We used combined molecular information (based on phylogenetic analyses of sequence variation of the mitochondrial cytochrome b gene) and morphometric data (dorsal and anal fin ray counts) to confirm the presence
    [Show full text]
  • Status Review, Disease Risk Analysis and Conservation Action Plan for The
    Status Review, Disease Risk Analysis and Conservation Action Plan for the Bellinger River Snapping Turtle (Myuchelys georgesi) December, 2016 1 Workshop participants. Back row (l to r): Ricky Spencer, Bruce Chessman, Kristen Petrov, Caroline Lees, Gerald Kuchling, Jane Hall, Gerry McGilvray, Shane Ruming, Karrie Rose, Larry Vogelnest, Arthur Georges; Front row (l to r) Michael McFadden, Adam Skidmore, Sam Gilchrist, Bruno Ferronato, Richard Jakob-Hoff © Copyright 2017 CBSG IUCN encourages meetings, workshops and other fora for the consideration and analysis of issues related to conservation, and believes that reports of these meetings are most useful when broadly disseminated. The opinions and views expressed by the authors may not necessarily reflect the formal policies of IUCN, its Commissions, its Secretariat or its members. The designation of geographical entities in this book, and the presentation of the material, do not imply the expression of any opinion whatsoever on the part of IUCN concerning the legal status of any country, territory, or area, or of its authorities, or concerning the delimitation of its frontiers or boundaries. Jakob-Hoff, R. Lees C. M., McGilvray G, Ruming S, Chessman B, Gilchrist S, Rose K, Spencer R, Hall J (Eds) (2017). Status Review, Disease Risk Analysis and Conservation Action Plan for the Bellinger River Snapping Turtle. IUCN SSC Conservation Breeding Specialist Group: Apple Valley, MN. Cover photo: Juvenile Bellinger River Snapping Turtle © 2016 Brett Vercoe This report can be downloaded from the CBSG website: www.cbsg.org. 2 Executive Summary The Bellinger River Snapping Turtle (BRST) (Myuchelys georgesi) is a freshwater turtle endemic to a 60 km stretch of the Bellinger River, and possibly a portion of the nearby Kalang River in coastal north eastern New South Wales (NSW).
    [Show full text]
  • Condition Monitoring of Threatened Fish Populations in Lake Alexandrina and Lake Albert
    Condition Monitoring of Threatened Fish Populations in Lake Alexandrina and Lake Albert Report to the Murray–Darling Basin Authority and the South Australian Department for Environment and Water Scotte Wedderburn and Thomas Barnes June 2018 © The University of Adelaide and the Department for Environment and Water With the exception of the Commonwealth Coat of Arms, the Murray–Darling Basin Authority logo, photographs and presented data, all material presented in this document is provided under a Creative Commons Attribution 4.0 International licence (https://creativecommons.org/licences/by/4.0/). For the avoidance of any doubt, this licence only applies to the material set out in this document. The details of the licence are available on the Creative Commons website (accessible using the links provided) as is the full legal code for the CC BY 4.0 licence (https://creativecommons.org/licences/by/4.0/legalcode). MDBA’s preference is that this publication be attributed (and any material sourced from it) using the following: Publication title: Condition Monitoring of Threatened Fish Populations in Lake Alexandrina and Lake Albert Source: Licensed from the Department for Environment and Water under a Creative Commons Attribution 4.0 International Licence The contents of this publication do not purport to represent the position of the Commonwealth of Australia or the MDBA in any way and are presented for the purpose of informing and stimulating discussion for improved management of Basin's natural resources. To the extent permitted by law, the copyright holders (including its employees and consultants) exclude all liability to any person for any consequences, including but not limited to all losses, damages, costs, expenses and any other compensation, arising directly or indirectly from using this report (in part or in whole) and any information or material contained in it.
    [Show full text]
  • 2219573-REP-Marine Assessment Report AR
    Appendix L – Marine Assessment GHD | Report for Hunter Water Corporation - Belmont Drought Response Desalination Plant, 2219573 Hunter Water Corporation Belmont Drought Response Desalination Plant Marine Environment Assessment Amendment Report July 2020 Table of contents 1. Introduction..................................................................................................................................... 1 1.1 Background .......................................................................................................................... 1 1.2 Purpose and structure of this report .................................................................................... 2 2. Project changes ............................................................................................................................. 4 2.1 Overview .............................................................................................................................. 4 2.2 Key features of the amended Project .................................................................................. 4 3. Methodology ................................................................................................................................... 7 3.1 Review of relevant legislation .............................................................................................. 7 3.2 Review of databases and searches ..................................................................................... 7 3.3 Review of previous marine ecology reports ........................................................................
    [Show full text]
  • Final Report Ornate Rainbowfish, Rhadinocentrus Ornatus, Project
    Final Report Ornate Rainbowfish, Rhadinocentrus ornatus, project. (Save the Sunfish, Grant ID: 19393) by Simon Baltais Wildlife Preservation Society of QLD Bayside Branch (QLD) inc. (Version: Saturday, 25 June 2011) 1 1. Introduction 1.1 Background The Rhadinocentrus ornatus (Ornate Sunfish, soft spined sunfish, or Ornate Rainbowfish) is a freshwater rainbowfish from the Family Melanotaeniidae. This Melanotaeniidae family of fish is only found in Australia and New Guinea. It’s a small, mainly insectivorous species, the largest individuals reaching a maximum length of approximately 80mm (Warburton and Chapman, 2007). The Rhadinocentrus ornatus (R. ornatus) is said to be a small, obligate freshwater fish species restricted to the coastal wallum habitat of eastern Australia (Hancox et al, 2010), where waters are slow flowing and acidic, and submerged and emergent vegetation is plentiful (Warburton and Chapman, 2007). However, Wildlife Queensland has found this species utilising other habitat types, such as gallery rainforest along Tingalpa Creek West Mt Cotton, a finding supported by BCC (2010). Good populations of R.ornatus were particularly found in clear slow – medium flowing streams supporting no aquatic or emergent vegetation located within gallery rainforest. The species was particularly common in 12.3.1 Gallery rainforest (notophyll vine forest) on alluvial plains (Endangered) within a landscape comprised of 12.11.5 Open forest complex with Corymbia citriodora, Eucalyptus siderophloia, E. major on metamorphics ± interbedded volcanics
    [Show full text]
  • AFSS 2014 Abstract Booklet
    Oral abstracts Oral abstracts The evolution of ASFB – reflections on 35 years of membership Seeing with sound – the behaviour and movements of fish in estuaries 1 2 1 2 01 Martin Gomon1 04 Alistair Becker , Iain M Suthers , Alan K Whitfield 1. Museum Victoria, Melbourne, VIC, Australia 1. University of New South Wales, Sydney, NSW, Australia 2. South African Institute for Aquatic Biodiversity, Grahamstown, South Africa The Australian Society for Fish Biology had as its inception early meetings organised by the ichthyological staff of the Australian Museum and New South Fisheries intended as a mechanism for sharing advances in fish related science and the development of Underwater video techniques have progressed rapidly over the past ten years, and are now used in a diverse range of habitats initiatives leading to the better understanding of the diversity and biology of Australia’s ichthyofauna. Although the enthusiasm from small creeks to the ocean depths. A limitation of underwater video cameras is they rely on high levels of water clarity and and casual nature of this now incorporated body has remained, the various focuses of the Society and its annual conferences have require artificial lighting if used in low light conditions. In systems such as estuaries, turbidity levels often restrict the use of changed over the decades in line with the evolving directions of the institutions and authorities charged with addressing fish conventional video. Acoustic cameras (DIDSON) overcome this problem as they rely on sound to produce near video, flowing studies and management, as well as the transient influences of the many characters that have been the Society’s driving force.
    [Show full text]