DOCSLIB.ORG

Performance of Acanthopagrus Butcheri Broodstock Conditioned In

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Performance of Acanthopagrus Butcheri Broodstock Conditioned In Does aquaculture diet composition influence the nutrition retention and condition of wild-caught Acanthopagrus butcheri broodstock? Submitted by Jesse Isaiah Newton This thesis is presented for the degree of the Bachelor of Science Honours College of Science, Health, Engineering and Education, Murdoch University, 2020 Cover Image. A wild Acanthopagrus butcheri captured from the Murray River region of the Peel-Harvey Estuary and used for the feed trial conducted in this study. Photograph by Jesse Newton. Abstract Aquaculture is an essential industry for global food security, with production surpassing that obtained from wild capture fisheries. Future development of this profit- driven industry to meet the needs of a rapid growing population is dependent on the improved efficiency and sustainability of feeding methods. The health and nutrition of broodstock is crucial as it directly influences larval development and survival. Wet diets of whole fish and cephalopods are often fed to broodstock, however, they are abundant in long-chain highly unsaturated fatty acids and high rancidity making them prone to oxidation while in storage. Oxidation makes feed products rancid and degrades reproductive organs in fish, namely the livers. This leads to smaller spawns and reduction in larval survival. Aquaculture production is often limited by poor larval performance as a direct influence of inadequate knowledge of broodstock nutritional requirements. Due to the variance in nutritional requirements at a species level, investigative research is required. Acanthopagrus butcheri, an important recreational fishing species in Australia, fits the criteria for diversification of small-scale aquaculture production outlined by the Food and Agricultural Organisation of the United Nations. This study aims to investigate the impacts of aquaculture diets on the physiological health of wild caught A. butcheri broodstock, by measuring the transfer of dietary nutrients from the following commercial aquaculture diets, frozen squid and pilchards, Breed-M broodstock conditioning diets and C2, a powdered larval diet combined with gelatine into pellets. Breed-M and C2 provided superior fatty acid profiles and antioxidant defence, while pilchards had high rancidity values which led to oxidation of liver tissue. Livers from wild caught fish reflected the lowest oxidation values, despite also containing minimal levels of antioxidants. Breed-M and C2 provide antioxidants and fatty acids that are excessive of A. butcheri requirements, however wet fish diets of pilchards result in rapid degradation of valuable broodstock, negatively impacting growth and the physiological condition of reproductive organs. This study provides insight into the dietary requirements of finfish broodstock and shows the implications of insufficient broodstock nutrition in aquaculture production. Acknowledgements I would like to thank my supervisory team of Drs. Gavin Partridge, Ben Roennfeldt, Alan Cottingham and James Tweedley for your advice, help and support throughout. The time dedicated to assisting this project from its beginning to the submission of this thesis has been invaluable to me and I am extremely appreciative of what has been a steep learning experience. Having the input from each of your areas of expertise has enabled me to learn from multiple perspectives and for that I am grateful. Many thanks go to Dr. Ben Roennfeldt, who almost single handedly designed and built the aquaculture facility! Your Bream expertise was invaluable, especially when you caught double my weekly catch in one day to get us started. This project could not have worked without the assistance from Dr. Gavin Partridge and the team at Australian Centre for Applied Aquaculture Research (ACAAR) who helped leading up to and throughout the trial, producing the C2 feed, assisting with sample analysis and allowing me to utilise their facilities. Thanks go to the Peel-Harvey Catchment Council and John Tonkin College for their collaboration and support of this project and to Tackleworld Miami, for assisting in the capture of our broodstock and engaging the local community so they could take part in fishing for our broodstock. Thank you to the Department of Primary Industries and Regional Development Diagnostic Laboratory Services, for allowing me to work in the lab so I gain experience and a better understanding of the analyses and also PathWest and Vetpath laboratories for working to process our samples as fast as they did during such a restricting and uncertain time. A special thanks to Charlie, you kept me connected to the outside world when you helped with late night tank cleaning and water changes and made me feel somewhat normal, when you were still processing mussels in the lab next to me beyond midnight. To all of the other volunteers that helped me along the way, I would not have been able to complete this project without your assistance. The journey of transforming a dusty storage shed to a successful aquaculture facility, the road trips to catch broodstock (many unsuccessful) and the very long final day, helping to complete the trial. These all took many hands and minds and I appreciate the time you lended me. To Hayley, your unwavering support, encouraging words and constant belief in me through the past 18 months has been invaluable. Theres noone else I would have rathered to dissect fish with until 3am and I wouldn’t have had clean clothes or a proper meal for the final six months if it wasn’t for you. Table of Contents 1 Introduction......................................................................................................... 1 1.1 Aquaculture .................................................................................................... 1 1.2 Aquaculture industry importance .................................................................... 2 1.3 Australian aquaculture .................................................................................... 4 1.4 Sparid aquaculture .......................................................................................... 5 1.5 Broodstock as key to global aquaculture ......................................................... 6 1.6 Link between nutrition, body condition and reproductive physiology .............. 8 Dietary fatty acids .................................................................................... 9 Antioxidants .......................................................................................... 10 Blood biochemistry................................................................................ 11 1.7 Acanthopagrus butcheri ................................................................................ 13 1.8 Aims and objectives ...................................................................................... 15 2 Materials and methods ...................................................................................... 17 2.1 Aquaculture system ...................................................................................... 17 2.2 Fish capture and handling ............................................................................. 20 2.3 Feed trial ...................................................................................................... 21 2.4 Sample preparation ....................................................................................... 26 2.5 Condition analysis ........................................................................................ 27 2.6 Liver analysis ............................................................................................... 28 2.7 Statistical analysis ........................................................................................ 29 3 Results ............................................................................................................... 30 3.1 Nutritional composition of diets .................................................................... 30 3.2 Fish condition ............................................................................................... 36 3.3 Blood analysis .............................................................................................. 41 3.4 Liver analysis ............................................................................................... 48 4 Discussion .......................................................................................................... 57 4.1 Condition analyses ........................................................................................ 57 4.2 Blood biochemistry....................................................................................... 60 4.3 Liver analyses ............................................................................................... 63 5 Future Directions .............................................................................................. 66 6 Conclusions ...…………………………………………………………………… 68 7 References.......................................................................................................... 70 8 Appendix ........................................................................................................... 80 1 Introduction 1.1 Aquaculture Fishing for sustenance by humans has been documented as far back as 100,000 years ago (Walter et al., 2000), with fish consumption being historically important, stemming from religious beliefs and extending to consumption as a luxury food item (Fabinyi, 2012; Pauly, 2018). Aquaculture is a broad term for a variety of
Load more

Recommended publications
  • Updated Checklist of Marine Fishes (Chordata: Craniata) from Portugal and the Proposed Extension of the Portuguese Continental Shelf
    European Journal of Taxonomy 73: 1-73 ISSN 2118-9773 http://dx.doi.org/10.5852/ejt.2014.73 www.europeanjournaloftaxonomy.eu 2014 · Carneiro M. et al. This work is licensed under a Creative Commons Attribution 3.0 License. Monograph urn:lsid:zoobank.org:pub:9A5F217D-8E7B-448A-9CAB-2CCC9CC6F857 Updated checklist of marine fishes (Chordata: Craniata) from Portugal and the proposed extension of the Portuguese continental shelf Miguel CARNEIRO1,5, Rogélia MARTINS2,6, Monica LANDI*,3,7 & Filipe O. COSTA4,8 1,2 DIV-RP (Modelling and Management Fishery Resources Division), Instituto Português do Mar e da Atmosfera, Av. Brasilia 1449-006 Lisboa, Portugal. E-mail: [email protected], [email protected] 3,4 CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal. E-mail: [email protected], [email protected] * corresponding author: [email protected] 5 urn:lsid:zoobank.org:author:90A98A50-327E-4648-9DCE-75709C7A2472 6 urn:lsid:zoobank.org:author:1EB6DE00-9E91-407C-B7C4-34F31F29FD88 7 urn:lsid:zoobank.org:author:6D3AC760-77F2-4CFA-B5C7-665CB07F4CEB 8 urn:lsid:zoobank.org:author:48E53CF3-71C8-403C-BECD-10B20B3C15B4 Abstract. The study of the Portuguese marine ichthyofauna has a long historical tradition, rooted back in the 18th Century. Here we present an annotated checklist of the marine fishes from Portuguese waters, including the area encompassed by the proposed extension of the Portuguese continental shelf and the Economic Exclusive Zone (EEZ). The list is based on historical literature records and taxon occurrence data obtained from natural history collections, together with new revisions and occurrences.
    [Show full text]
  • Sparus Aurata Global Invasive Species Database (GISD)
    FULL ACCOUNT FOR: Sparus aurata Sparus aurata System: Marine_freshwater_brackish Kingdom Phylum Class Order Family Animalia Chordata Actinopterygii Perciformes Sparidae Common name snapper (English, New Zealand), gilthead (English), gilt head (English), gilt head bream (English), gilthead bream (English), gilt- head seabream (English), goudbrasem (Dutch), kultaotsa-ahven (Finnish), n'tad (Arabic), orada (Catalan), orada (Croatian), silver seabream (English), daurade royale (French, Mauritania), dorade (French), Dorade (German), dorade royale (French), Dorade Royal (German), Gemeine Goldbrasse (German), Goldbrasse (German), goldbrassen (German), Goldkopf (German), daurade (French), tsipoura (Greek), dorada (Spanish), dourada (Portuguese), cipura (Turkish), goud brasem (Dutch), komarca (Croatian), lovrata (Croatian), ovrata (Croatian), podlanica (Croatian), dinigla (Croatian), væbnerfisk (Danish), guldbrasen (Danish) Synonym Aurata aurata , (Linnaeus, 1758) Chrysophrys aurata , (Linnaeus, 1758) Chrysophrys aurathus , (Linnaeus, 1758) Chrysophrys auratus , (Linnaeus, 1758) Chrysophrys crassirostris , Valenciennes, 1830 Pagrus auratus , (Linnaeus, 1758) Pagrus auratus , (non Forster, 1801) Sparus auratus , Linnaeus, 1758 Similar species Summary Gilthead bream (Sparus aurata) is a fish of Mediterranean and Atlantic Ocean origin. It is one of the most important fish in the aquaculture industry in the Mediterranean. However the rapid development of marine cage culture of this fish has raised concerns about the impact of escaped fish on the genetic diversity of natural populations. view this species on IUCN Red List Global Invasive Species Database (GISD) 2021. Species profile Sparus aurata. Pag. 1 Available from: http://www.iucngisd.org/gisd/species.php?sc=1703 [Accessed 02 October 2021] FULL ACCOUNT FOR: Sparus aurata Species Description The gilthead bream is a Mediterranean fish reaching a maximum of 70 cm length and 6 kg in weight (Balart et al., 2009).
    [Show full text]
  • Oyster Farms Are the Main Spawning Grounds of the Black Sea Bream Acanthopagrus Schlegelii in Hiroshima Bay, Japan
    Oyster farms are the main spawning grounds of the black sea bream Acanthopagrus schlegelii in Hiroshima Bay, Japan Kentaro Kawai, Hiroki Fujita, Gustavo Sanchez and Tetsuya Umino Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi Hiroshima, Hiroshima, Japan ABSTRACT Understanding the anthropogenic impact of oyster farms is essential for the management and conservation of marine fishes. In Japan, Hiroshima Bay is the region with the most intense oyster farming and thus suitable to study the impact of these farms. Here, we surveyed spherical planktonic eggs of the black sea bream Acanthopagrus schlegelii, one of the most abundant fish in the Bay. Our survey was performed at fourteen stations which included places with oyster farms and historical spawning grounds. We found the highest egg densities in four stations, one with historical spawning aggregations and three with major oyster farms. Besides, surveys at the innermost part of Hiroshima Bay, where two major rivers discharge, showed a low density of eggs indicating that black sea bream avoids spawning in low salinity areas. Our study suggests that oyster farms benefit spawners of black sea bream by providing more food sources than historical spawning grounds for efficient spawning. Yet, whether oyster farms represent a full advantage for the species remains unclear, particularly because they are known to host jellyfishes that prey on eggs and limit water flow that can influence the survival of fish eggs. Subjects Agricultural Science, Aquaculture, Fisheries and Fish Science, Ecology, Marine Biology, Submitted 8 February 2021 Accepted 26 April 2021 Zoology Published 1 June 2021 Keywords Shellfish aquaculture, Fish spawning, Sparid, Anthropogenic impact, Fish eggs Corresponding author Tetsuya Umino, INTRODUCTION [email protected] Hiroshima Bay is an enclosed bay in the western Seto Inland Sea of Japan with an average Academic editor seabed depth of 25.6 m.
    [Show full text]
  • Marine Fishes from Galicia (NW Spain): an Updated Checklist
    1 2 Marine fishes from Galicia (NW Spain): an updated checklist 3 4 5 RAFAEL BAÑON1, DAVID VILLEGAS-RÍOS2, ALBERTO SERRANO3, 6 GONZALO MUCIENTES2,4 & JUAN CARLOS ARRONTE3 7 8 9 10 1 Servizo de Planificación, Dirección Xeral de Recursos Mariños, Consellería de Pesca 11 e Asuntos Marítimos, Rúa do Valiño 63-65, 15703 Santiago de Compostela, Spain. E- 12 mail: [email protected] 13 2 CSIC. Instituto de Investigaciones Marinas. Eduardo Cabello 6, 36208 Vigo 14 (Pontevedra), Spain. E-mail: [email protected] (D. V-R); [email protected] 15 (G.M.). 16 3 Instituto Español de Oceanografía, C.O. de Santander, Santander, Spain. E-mail: 17 [email protected] (A.S); [email protected] (J.-C. A). 18 4Centro Tecnológico del Mar, CETMAR. Eduardo Cabello s.n., 36208. Vigo 19 (Pontevedra), Spain. 20 21 Abstract 22 23 An annotated checklist of the marine fishes from Galician waters is presented. The list 24 is based on historical literature records and new revisions. The ichthyofauna list is 25 composed by 397 species very diversified in 2 superclass, 3 class, 35 orders, 139 1 1 families and 288 genus. The order Perciformes is the most diverse one with 37 families, 2 91 genus and 135 species. Gobiidae (19 species) and Sparidae (19 species) are the 3 richest families. Biogeographically, the Lusitanian group includes 203 species (51.1%), 4 followed by 149 species of the Atlantic (37.5%), then 28 of the Boreal (7.1%), and 17 5 of the African (4.3%) groups. We have recognized 41 new records, and 3 other records 6 have been identified as doubtful.
    [Show full text]
  • Restocking the Blackwood River Estuary with the Black Bream Acanthopagrus Butcheri Project No. 2000/180
    Restocking the Blackwood River Estuary with the Black Bream Acanthopagrus butcheri Jenkins, G.I., French, D.J.W., Potter, I.C., de Lestang, S., Hall, N.G., Partridge, G.J., Hesp, S.A. and Sarre, G.A. Project No. 2000/180 Fisheries Research and Development Corporation Report FRDC Project 2000/180 Restocking the Blackwood River Estuary with the Black Bream Acanthopagrus butcheri. Jenkins, G.I. # French, D.J.W.* Potter, I.C. * de Lestang, S.* Hall, N.* Partridge, G.J. # Hesp, S.A. * Sarre, G.A. * June 2006 #Aquaculture Development Unit WA Maritime Training Centre, Challenger TAFE 1 Fleet Street, Fremantle, Western Australia, 6160 *Centre for Fish and Fisheries Research School of Biological Sciences and Biotechnology Murdoch University Murdoch, Western Australia 6150 This work is copyright. Except as permitted under the Copyright Act 1968 (Cth), no part of this publication may be reproduced by any process, electronic or otherwise, without the specific written permission of the copyright owners. Neither may information be stored electronically in any form whatsoever without such permission. June 2006 ISBN: 86905-8932 1 TABLE OF CONTENTS TABLE OF CONTENTS ..............................................................................................................................2 OBJECTIVES................................................................................................................................................3 NON-TECHNICAL SUMMARY.................................................................................................................4
    [Show full text]
  • Biology, Stock Status and Management Summaries for Selected Fish Species in South-Western Australia
    Fisheries Research Report No. 242, 2013 Biology, stock status and management summaries for selected fish species in south-western Australia Claire B. Smallwood, S. Alex Hesp and Lynnath E. Beckley Fisheries Research Division Western Australian Fisheries and Marine Research Laboratories PO Box 20 NORTH BEACH, Western Australia 6920 Correct citation: Smallwood, C. B.; Hesp, S. A.; and Beckley, L. E. 2013. Biology, stock status and management summaries for selected fish species in south-western Australia. Fisheries Research Report No. 242. Department of Fisheries, Western Australia. 180pp. Disclaimer The views and opinions expressed in this publication are those of the authors and do not necessarily reflect those of the Department of Fisheries Western Australia. While reasonable efforts have been made to ensure that the contents of this publication are factually correct, the Department of Fisheries Western Australia does not accept responsibility for the accuracy or completeness of the contents, and shall not be liable for any loss or damage that may be occasioned directly or indirectly through the use of, or reliance on, the contents of this publication. Fish illustrations Illustrations © R. Swainston / www.anima.net.au We dedicate this guide to the memory of our friend and colleague, Ben Chuwen Department of Fisheries 3rd floor SGIO Atrium 168 – 170 St Georges Terrace PERTH WA 6000 Telephone: (08) 9482 7333 Facsimile: (08) 9482 7389 Website: www.fish.wa.gov.au ABN: 55 689 794 771 Published by Department of Fisheries, Perth, Western Australia. Fisheries Research Report No. 242, March 2013. ISSN: 1035 - 4549 ISBN: 978-1-921845-56-7 ii Fisheries Research Report No.242, 2013 Contents ACKNOWLEDGEMENTS ...............................................................................................
    [Show full text]
  • The Status of the Black Bream Acanthopagrus Butcheri (Pisces: Sparidae) Population in Lake Clifton, South-Western Australia
    Journal of the Royal Society of Western Australia, 94: 25–28, 2011 The status of the black bream Acanthopagrus butcheri (Pisces: Sparidae) population in Lake Clifton, south-western Australia K A Smith & J Norriss Department of Fisheries, P.O. Box 21, North Beach, 6020, Australia. Corresponding author: [email protected] Manuscript received August 2010; accepted December 2010 Abstract Lake Clifton hosts the largest living, non-marine thrombolite (microbialite) reef in the southern hemisphere. The thrombolite reef was recently listed as a critically endangered ecological community. The main threat to the ecology of the lake is increasing salinity, but other threats have also been identified, including the impact of the introduced fish Acanthopagrus butcheri (Munro, 1949). Samples opportunistically collected after a fish kill in 2007 indicated that A. butcheri in this lake experienced very low somatic growth and recruitment failure between 1995 and 2007, probably in response to hypersalinity. The evidence suggests that the A. butcheri population in Lake Clifton is effectively extinct. The proposed conservation strategy for Lake Clifton addresses a range of identified threats, including the eradication of A. butcheri. However, management action in response to this particular threat may no longer be required. The abundance of A. butcheri in the lake is probably very low and the population is likely to become extinct if current environmental trends continue. A dramatic reduction in growth rate after 1995 demonstrates the extraordinary growth plasticity of A. butcheri in response to environmental influences. Keywords: salinity, fish kill, growth, Sparidae, thrombolite Introduction 1987). Hence, a shift from permanently hyposaline to permanently hypersaline conditions threatens the Lake Clifton is a small, permanently closed, coastal survival of the key microbial species responsible for lake on the south-west coast of Western Australia, thrombolite formation.
    [Show full text]
  • Sparidentex Hasta): a Comparison with Other Farmed Sparid Species
    fishes Review Macronutrient Requirements of Silvery-Black Porgy (Sparidentex hasta): A Comparison with Other Farmed Sparid Species Mansour Torfi Mozanzadeh 1,*, Jasem G. Marammazi 1, Morteza Yaghoubi 1, Naser Agh 2, Esmaeil Pagheh 1 and Enric Gisbert 3 1 South Iranian Aquaculture Research Center, P.O. Box 669 Ahwaz, Iran; [email protected] (J.G.M.); [email protected] (M.Y.); [email protected] (E.P.) 2 Artemia and Aquatic Research Institute, Urmia University, 57135 Urmia, Iran; [email protected] 3 Institut de Recerca i Tecnologia Agroalimentaries, Centre de Sant Carles de la Rápita (IRTA-SCR), Unitat de Cultius Experimentals, 43540 Sant Carles de la Ràpita, Spain; [email protected] * Correspondence: mansour.torfi@gmail.com Academic Editor: Francisco J. Moyano Received: 31 January 2017; Accepted: 5 May 2017; Published: 13 May 2017 Abstract: Silvery-black porgy (Sparidentex hasta) is recognized as one of the most promising fish species for aquaculture diversification in the Persian Gulf and the Oman Sea regions. In this regard, S. hasta has received considerable attention, and nutritional studies focused on establishing the nutritional requirements for improving diet formulation have been conducted during recent years. Considering the results from different dose–response nutritional studies on macronutrient requirements conducted in this species, it can be concluded that diets containing ca. 48% crude protein, 15% crude lipid, 15% carbohydrates and 20 KJ g−1 gross energy are recommended for on-growing S. hasta juveniles. In addition, the optimum essential amino acid profile for this species (expressed as g 16 g N−1), should be approximately arginine 5.3, lysine 6.0, threonine 5.2, histidine 2.5, isoleucine 4.6, leucine 5.4, methionine + cysteine 4.0 (in a diet containing 0.6 cysteine), phenylalanine + tyrosine 5.6 (in a diet containing 1.9 tyrosine), tryptophan 1.0 and valine 4.6.
    [Show full text]
  • A Survey of Marine Bony Fishes of the Gaza Strip, Palestine
    The Islamic University of Gaza الجــــــــــامعة اﻹســــــــــﻻميـة بغــــــــــــــــــزة Deanship of Research and Graduate Studies عمادة البحث العممي والدراسات العميا Faculty of Science كــــميـــــــــــــــــــــــــــــــة العـمـــــــــــــــــــــــــــــــــــــوم Biological Sciences Master Program ماجـســــــــتيـر العمــــــــــــــوم الحـياتيــــــــــة )Zoology) عمـــــــــــــــــــــــــــــــــــــــم حيـــــــــــــــــــــــــــــــــــــــوا A Survey of Marine Bony Fishes of the Gaza Strip, Palestine ِـخ ٌﻷؿّان اؼٌظٍّح اٌثذغٌح فً لطاع غؼج، فٍـطٍٓ By Huda E. Abu Amra B.Sc. Biology Supervised by Dr. Abdel Fattah N. Abd Rabou Associate Professor of Environmental Sciences A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Biological Science (Zoology) August, 2018 إلــــــــــــــغاع أٔا اٌّىلغ أصٔاٖ ِمضَ اٌغؿاٌح اٌتً تذًّ اؼٌٕىاْ: A Survey of Marine Bony Fishes in the Gaza Strip, Palestine ِـخ ٌﻷؿّان اؼٌظٍّح اٌثذغٌح فً لطاع غؼج، فٍـطٍٓ أقش تأٌ يا اشرًهد عهّٛ ْزِ انشعانح إًَا ْٕ َراض جٓذ٘ انخاص، تاعرصُاء يا ذًد اﻹشاسج إنّٛ حٛصًا ٔسد، ٔأٌ ْزِ انشعانح ككم أٔ أ٘ جضء يُٓا نى ٚقذو يٍ قثم اٜخشٍٚ نُٛم دسجح أٔ نقة عهًٙ أٔ تحصٙ نذٖ أ٘ يؤعغح ذعهًٛٛح أٔ تحصٛح أخشٖ. Declaration I understand the nature of plagiarism, and I am aware of the University’s policy on this. The work provided in this thesis, unless otherwise referenced, is the researcher's own work, and has not been submitted by others elsewhere for any other degree or qualification. اعى انطانثح ْذٖ عٛذ عٛذ أتٕ عًشج :Student's name انرٕقٛع Signature: Huda انراسٚخ Date: 8-8-2018 I ٔتٍجح اٌذىُ ػٍى أطغودح ِاجـتٍغ II Abstract The East Mediterranean Sea is home to a wealth of marine resources including the bony fishes (Class Osteichthyes), which constitute a capital source of protein worldwide.
    [Show full text]
  • Factors Required for the Successful Aquaculture of Black Bream In
    Determination of the biological parameters required for managing the fisheries of four tuskfish species and western yellowfin bream Fairclough, D. V., Hesp S. A., Potter, I. C. & N. G. Hall Project No. 2000/137 Fisheries Research and Development Corporation Report FRDC project 2000/137 Determination of the biological parameters required for managing the fisheries of four tuskfish species and western yellowfin bream Fairclough D.V. Hesp S.A. Potter I.C. Hall N.G. June 2004 Centre for Fish and Fisheries Research Murdoch University Murdoch, Western Australia 6150 This work is copyright. Except as permitted under the Copyright Act 1968 (Cth), no part of this publication may be reproduced by any process, electronic or otherwise, without the specific written permission of the copyright owners. Neither may information be stored electronically in any form whatsoever without such permission. June 2004 ISBN: 0-646-39851-2 2 Table of Contents NON-TECHNICAL SUMMARY:............................................................................................6 OUTCOMES ACHIEVED TO DATE .......................................................................................6 ACKNOWLEDGEMENTS.......................................................................................................9 1.0 GENERAL INTRODUCTION .......................................................................................10 1.1 BACKGROUND ...................................................................................................10 1.2 NEED.....................................................................................................................13
    [Show full text]
  • Ecology and Life History Characteristics of Black Bream, Acanthopagrus Butcheri, in Tasmanian Estuarine Ecosystems
    Ecology and Life History Characteristics of Black Bream, Acanthopagrus butcheri, in Tasmanian Estuarine Ecosystems Ryuji Sakabe B.Sc Hons Submitted in fulfilment of requirements for the degree of Doctor of Philosophy October 2009 School of Zoology Tasmanian Aquaculture & Fisheries Institute University of Tasmania DECLARATION I hereby declare that this thesis is my own work, except where due acknowledgement is given, and that the material presented here has not been submitted at another university for the award of any other degree or diploma. Ryuji Sakabe Date 9.70 , STATEMENT OF AUTHORITY OF ACCESS This thesis may be made available for loan and limited copying in accordance with the Copyright Act 1968. Ryuji Sakabe Date III IV ABSTRACT Estuaries are characterised by high biological productivity associated with relatively variable environmental conditions. Estuarine dependent fish fauna must cope with such variability and typically exhibit a range of life history adaptations in conjunction with migratory capabilities, to make use of a range of habitats throughout their life time. Their utilisation of these habitats is known to vary at a number of temporal scales, including tide, diurnal, seasonal and life history stage. Studies of the interrelationships between estuarine dependent fauna and environmental conditions have attracted much attention because of the physiological and/or behavioral adaptations to the unstable environment. The black bream, Acanthopagrus butcheri, is an estuarine resident species that completes its whole life cycle within an estuary. It occurs extensively in temperate estuarine waters in southern Australia. This species is the subject of major recreational and commercial fisheries throughout its distributional range and has been the subject of several studies on mainland Australia, though very little work has been conducted in Tasmania.
    [Show full text]
  • The Sparid Fishes of Pakistan, with New Distribution Records
    Zootaxa 3857 (1): 071–100 ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ Article ZOOTAXA Copyright © 2014 Magnolia Press ISSN 1175-5334 (online edition) http://dx.doi.org/10.11646/zootaxa.3857.1.3 http://zoobank.org/urn:lsid:zoobank.org:pub:A26948F7-39C6-4858-B7FD-380E12F9BD34 The sparid fishes of Pakistan, with new distribution records PIRZADA JAMAL SIDDIQUI1, SHABIR ALI AMIR1, 2 & RAFAQAT MASROOR2 1Centre of Excellence in Marine Biology, University of Karachi, Karachi, Pakistan 2Pakistan Museum of Natural History, Garden Avenue, Shakarparian, Islamabad–44000, Pakistan Corresponding author Shabir Ali Amir, email: [email protected] Abstract The family sparidae is represented in Pakistan by 14 species belonging to eight genera: the genus Acanthopagrus with four species, A. berda, A. arabicus, A. sheim, and A. catenula; Rhabdosargus, Sparidentex and Diplodus are each represented by two species, R. sarba and R. haffara, Sparidentex hasta and S. jamalensis, and Diplodus capensis and D. omanensis, and the remaining four genera are represented by single species, Crenidens indicus, Argyrops spinifer, Pagellus affinis, and Cheimerius nufar. Five species, Acanthopagrus arabicus, A. sheim, A. catenula, Diplodus capensis and Rhabdosargus haffara are reported for the first time from Pakistani coastal waters. The Arabian Yellowfin Seabream Acanthopagrus ar- abicus and Spotted Yellowfin Seabream Acanthopagrus sheim have only recently been described from Pakistani waters, while Diplodus omanensis and Pagellus affinis are newly identified from Pakistan. Acanthopagrus catenula has long been incorrectly identified as A. bifasciatus, a species which has not been recorded from Pakistan. All species are briefly de- scribed and a key is provided for them. Key words: Acanthopagrus, Rhabdosargus, Sparidentex, Diplodus, Crenidens, Argyrops, Pagellus, Cheimerius, Spari- dae, Karachi, Pakistan Introduction The fishes belonging to family Sparidae, commonly known as porgies and seabreams, are widely distributed in tropical to temperate seas (Froese & Pauly, 2013).
    [Show full text]