DOCSLIB.ORG

Evaluating Spawning Induction Methods for the Tropical Black-Lip Rock Oyster, Saccostrea Echinata

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Evaluating Spawning Induction Methods for the Tropical Black-Lip Rock Oyster, Saccostrea Echinata Please do not remove this page Evaluating spawning induction methods for the tropical black-lip rock oyster, Saccostrea echinata Nowland, Samantha; O'Connor, Wayne; Elizur, Abigail; et.al. https://research.usc.edu.au/discovery/delivery/61USC_INST:ResearchRepository/12142219730002621?l#13142219720002621 Nowland, S., O’Connor, W., Elizur, A., & Southgate, P. (2021). Evaluating spawning induction methods for the tropical black-lip rock oyster, Saccostrea echinata. Aquaculture Reports, 20, 1–10. https://doi.org/10.1016/j.aqrep.2021.100676 Document Type: Published Version Link to Published Version: https://doi.org/10.1016/j.aqrep.2021.100676 USC Research Bank: https://research.usc.edu.au [email protected] CC BY-NC-ND V4.0 © 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license(http://creativecommons.org/licenses/by-nc-nd/4.0/). Downloaded On 2021/10/01 13:59:44 +1000 Please do not remove this page Aquaculture Reports 20 (2021) 100676 Contents lists available at ScienceDirect Aquaculture Reports journal homepage: www.elsevier.com/locate/aqrep Evaluating spawning induction methods for the tropical black-lip rock oyster, Saccostrea echinata Samantha J. Nowland a,b,*, Wayne A. O’Connor c, Abigail Elizur d, Paul C. Southgate b a Aquaculture Unit, Department of Industry, Tourism and Trade, Northern Territory Government, GPO Box 3000, Darwin, NT, 0801, Australia b School of Science, Technology & Engineering and Australian Centre for PacificIslands Research, University of the Sunshine Coast, 90 Sippy Downs Drive, Sippy Downs, Queensland, 4556, Australia c NSW Department of Primary Industries, Port Stephens Fisheries Institute, Taylors Beach, NSW, 2316, Australia d Genecology Research Centre, University of the Sunshine Coast, 90 Sippy Downs Drive, Sippy Downs, Queensland, 4556, Australia ARTICLE INFO ABSTRACT Keywords: When developing a species-specific hatchery protocol it is important to investigate the triggers for spawning, Spawning which is the foundation of the production cycle. This study evaluated multiple spawning induction techniques to Induction optimise the spawning success of black-lip rock oyster, Saccostrea echinata, broodstock. Initially, the most Oyster effective method for non-destructively opening broodstock was determined, to allow intramuscular injection of Saccostrea echinata chemical stimuli. Following this, the efficacy of seven spawning induction treatments, including two physical Salinity Muscle relaxant shock techniques, three chemical induction techniques, a combination of physical and chemical induction and strip spawning were assessed. Based on the outcomes of these trials, the combined and independent effects of reduced salinity and addition of sperm, as well as the potential of neuropeptides to trigger spawning, were evaluated. Results demonstrated that a concentration of 30 g/L of MgCl2 is an effective muscle relaxant for commercial and research application for S. echinata. It was determined that salinity reduction, rather than temperature increase, is a key factor for spawning induction. Strip spawning is a viable option for S. echinata; however, sperm motility was significantlyaffected, and fecundity and fertilisation rates were lower (although not significant,P > 0.05) when compared to other induction methods tested. A combination of physical and chemical induction, involving reduced salinity and addition of sperm, was the most successful treatment; 80 % of broodstock spawned within 19 min of salinity drop and addition of sperm. This method delivers significant production improvements for S. echinata, particularly regarding the time taken to induce spawning, and is therefore recommended for application in the hatchery. 1. Introduction year-round supply of spat (Maccacchero et al., 2005; FAO, 2011). Hatchery production has been established for Crassostrea iredalei and Oysters are a growing aquaculture commodity in tropical regions Crassostrea belcheri in Malaysia (Tan et al., 2014), Crassostrea angulata in that provide important economic and subsistence benefits in many Vietnam (O’Connor et al., 2016) and Crassostrea rhizophorae in Brazil countries (Nowland et al., 2019b; Willer and Aldridge, 2020). (Maccacchero et al., 2005). Other countries are progressing towards Commercial-scale production (>100 t per annum) occurs in Brazil, hatchery production by investing in species-specific research and northern Chile, southern China, Cuba, India, Indonesia, Malaysia, development, such as the establishment of culture techniques for Mexico, The Philippines, Senegal, Taiwan, Thailand and Vietnam Striostrea prismatica in Ecuador (Lodeiros et al., 2017). (Nezon, 1988; Huang and Lee, 2014; O’Connor et al., 2016; FAO, 2020). The black-lip rock oyster (Saccostrea echinata) (Quoy and Gaimard, Production in most of these countries, however, relies on collection of 1835) is an emerging aquaculture species that has received research wild spat as a source of culture stock, which can be unreliable (Nowland attention and investment. It occurs throughout the Indo-Pacific, from et al., 2019b). Research into hatchery production of tropical rock oysters Japan to New Caledonia, and across northern Australia, from Cone Bay is therefore increasing, stimulated by the need to guarantee a reliable, in Western Australia to Bowen in Queensland (Nowland et al., 2019d). * Corresponding author at: GPO Box 3000, Darwin, Northern Territory, 0801, Australia. E-mail addresses: [email protected] (S.J. Nowland), wayne.o’[email protected] (W.A. O’Connor), [email protected] (A. Elizur), [email protected] (P.C. Southgate). https://doi.org/10.1016/j.aqrep.2021.100676 Received 17 November 2020; Received in revised form 12 March 2021; Accepted 24 March 2021 Available online 7 April 2021 2352-5134/© 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). S.J. Nowland et al. Aquaculture Reports 20 (2021) 100676 Recent research has focused on developing the potential of S. echinata as production for this developing aquaculture species. a new aquaculture commodity in tropical Australia (Cobcroft et al., 2020). Studies have investigated population genetics (McDougall, 2018; 2. Materials and methods Nowland et al., 2019d) and reproductive seasonality of wild oysters (Nowland et al., 2019c), described larval development (Southgate and 2.1. Broodstock and histology Lee, 1998; Nowland et al., 2018a) and optimised rearing conditions for larval growth and survival (Nowland et al., 2018b, a). However, there is Broodstock oysters (S. echinata) with length (dorsoventral measure­ a lack of information relating to methods for reliable spawning induc­ ment; DVM) and width (anteroposterior measurement; APM) of 100 ± tion, which is an important requirement for routine commercial hatch­ 1.99 mm and 74.49 ± 1.55 mm, respectively, were originally collected ◦ 0 00 ery production. Developing a hatchery protocol for a species new to from South Goulburn Island, Northern Territory, Australia (11 38 46 S ◦ 0 00 aquaculture usually involves trialling different methods for spawning 133 25 14 E) and held in earthen ocean filledponds near the Northern induction to identify the most effective method for the target species. Territory Government’s, Darwin Aquaculture Centre, for use when Successful spawning induction under hatchery conditions requires oys­ required. Broodstock were randomly collected from this population in ters with mature gametes (Li et al., 2010), which can be obtained December 2016 for Experiment 1 and February 2017 for Experiment 2. directly from the wild during periods of natural maturation (Nowland Some broodstock were used for both experiments, therefore, treatment et al., 2019c) or by conditioning broodstock within the hatchery numbers are provided for each experiment. Broodstock were rinsed with ´ (Chavez-Villalba et al., 2002; Maneiro et al., 2017). Spawning may be freshwater after collection and scrubbed clean of any fouling using an triggered by several endogenous and exogenous factors, and methods iodine solution; 10 mL of Providone-Iodine Antiseptic Solution into 10 L often involve chemical induction, physical shock (i.e. rapid change in an of freshwater. Broodstock length (mm), width (mm), height (mm) and environmental factor such as water temperature or salinity) or a com­ weight (g) were recorded before each experiment. After spawning in­ bination of both (Helm et al., 2004; Aji, 2011). Furthermore, physical duction trails, broodstock were held in a 7600 L cylindrical tank within removal of gametes from mature oyster gonads, or ‘strip spawning’, is labelled baskets for two weeks to assess survival before being returned to commonly employed when a high degree of fertilisation control is the holding ponds. required, such as that required in selective breeding programs (Utting Pervious work on wild S. echinata has documented a gender ratio of and Spencer, 1991; O’Connor et al., 2008). 1:1.4 (female:male) and synchronised reproductive development It has long been documented that the presence of spermatozoa in (Nowland et al., 2019c). Because broodstock are valuable and it is not culture water may trigger spawning in conspecifics, as spermatozoa possible to determine gender or reproductive condition without sacri­ contain pheromones that cause chemical stimulation (Galtsoff, 1938, ficinganimals, the exact gender ratio and reproductive condition of the 1940). These pheromones
Load more

Recommended publications
  • Aquaculture in Western Australia
    Fact Sheet: Aquaculture in Western Australia Region North Coast, Gascoyne Coast, West Coast, South Coast Summary Despite Western Australia’s long coastline, our aquaculture industry is small by global standards – but it is growing and diversifying, with exciting opportunities on the horizon. Aside from contributing to food security, aquaculture creates employment and business opportunities in areas such as feed and equipment manufacturing. It also has direct and indirect economic benefits to the state, particularly in regional areas. In 2017-18, the total value of WA’s commercial fisheries and aquaculture production was $633 million. Of this, pearling (which is mostly commercially farmed) contributed $52 million (8%) and aquaculture $27 million (4%). Location of main aquaculture species farmed in Western Australia. Generated on 28/09/2021 https://marinewaters.fish.wa.gov.au/resource/fact-sheet-aquaculture-in-western-australia/ Page 1 of 8 Production for the Western Australian aquaculture industry in 2016/17 Current production – main aquaculture species in WA Barramundi Lates cacarifer Popular native table fish with high market demand which is sold as whole fish, live fish and fillets. WA’s barramundi production is largely located in the Kimberley region, at Cone Bay. Barramundi can be farmed in indoor recirculating systems, land-based ponds and sea cages. For more detailed information about barramundi aquaculture in Australia, see: https://www.agrifutures.com.au/farm-diversity/barramundi-aquaculture/ Barramundi farm in Cone Bay Rainbow trout Oncorhynchus mykiss Good eating fish that is popular with freshwater anglers. Trout was introduced to Australia for recreational fishing and aquaculture. It is difficult for the species to spawn naturally in WA’s conditions, so they are artificially bred in earthen and concrete ponds at the Pemberton Freshwater Research Centre.
    [Show full text]
  • Ž Culture Potential of the Pearl Oyster Pinctada / Imbricata from The
    Aquaculture 189Ž. 2000 375±388 www.elsevier.nlrlocateraqua-online Culture potential of the pearl oyster žPinctada imbricata/ from the Caribbean. II. Spat collection, and growth and mortality in culture systems H.-JorgÈ Urban) Facultad de Ciencias, Departamento de Biologõa, Seccion de Biologõa  Marina, UniÕersidad del Valle, A.A. 25360, Cali, Colombia Received 26 August 1999; received in revised form 23 February 2000; accepted 4 April 2000 Abstract Temporal variation in abundance of larvae and spat of the pearl oyster Pinctada imbricata was studied at several locations on the Colombian coast from May 1997 to June 1998. Larvae were sampled with bongo nets and spat were harvested from collectors at monthly intervals. Abun- dances of predators Ž.Cymatium gastropods, and portunid, xanthid and majiid crabs were also recorded. A relationship between salinity, particulate organic matter and larvae abundance was observed, leading to peaks in abundance of spat on collectors some weeks later. Average catch rates of 10 spat collectory1 monthy1, using collectors made of cheap easily accessible materials, indicate that availability of P. imbricata is sufficient to initiate and support aquaculture of this species. Growth and mortality rates of juveniles in three different culture systems at two densities Ž.20% and 30%, i.e. percentage of available area covered by juveniles showed that density within the same culture system had no effect on growth, but that growth differed significantly among the three culture systems. Growth in ``bag'' systems was lower than in boxes whereas growth in ``suspended'' and ``bottom'' boxes was similar and comparable to the growth of a natural population.
    [Show full text]
  • NATURE TERRITORY April 2019 Newsletter of the Northern Territory Field Naturalists' Club Inc
    NATURE TERRITORY April 2019 Newsletter of the Northern Territory Field Naturalists' Club Inc. In This Issue April Meeting p. 2 April Field Trip p. 3 Upcoming Activities p. 3 Death Adders pp. 4-5 Publications p. 5 Podcasts pp. 6-7 Chitter Chatter pp. 8-9 Club notices p. 10 Club web-site: http://ntfieldnaturalists.org.au/ Black-ringed Mangrove Snake (Hydrelaps darwiniensis) swimming around mangroves in Darwin Harbour. Photo: Nick Volpe FOR THE DIARY April Meeting: Wednesday 10 - Oysters going troppo ? research behind the recent success presented by Samantha Nowlands April Field Trip: Sunday 14 - Butterflies at East Point with Tissa Ratnayeke See pages 2 - 3 for m ore det ails Disclaimer: The views expressed in Nature Territory are not necessarily those of the NT Field Naturalists' Club Inc. or members of its Committee. April Meeting Oysters going troppo ? research behind the recent success presented by Samantha Nowland Wednesday 10, 7.45 pm, CDU Casuarina, Room BLUE 2.2.24 Sum m ary: Darwin Aquaculture Centre's (DAC) Black-lip Oyster hatchery research program and work with Aboriginal communities in South Goulburn Island has received a lot of media coverage in recent years, and it isn't stopping any time soon. DAC's collaboration with Traditional Owners in the Warruwi community on South Goulburn Island was showcased nationally this weekend on ABC's Landline program (https://www.abc.net.au/news/2019-03-30/native-oysters:-the-beginning-of-a-new-industry-in/10956306). The DAC team has worked extremely hard to get this program to where it is today.
    [Show full text]
  • Northern Australia Aquaculture Industry Situational Analysis Project A.1.1718119
    Northern Australia Aquaculture Industry Situational Analysis Project A.1.1718119 Literature Review Editors: Jennifer Cobcroft and Dean Jerry Acknowledgments This research is funded by the CRC for Developing Northern Australia (CRCNA) is supported by the Cooperative Research Centres Program, an Australian Government initiative. The CRCNA also acknowledges the support of its investment partners: the Western Australian, Northern Territory and Queensland Governments. Disclaimer Any opinions expressed in this document are those of the authors. They do not purport to reflect the opinions or views of the CRCNA or its partners, agents or employees. The CRCNA gives no warranty or assurance and makes no representation as to the accuracy or reliability of any information or advice contained in this document, or that it is suitable for any intended use. The CRCNA, its partners, agents and employees, disclaim any and all liability for any errors or omissions or in respect of anything or the consequences of anything done or omitted to be done in reliance upon the whole or any part of this document. Peer Review Statement The CRCNA recognises the value of knowledge exchange and the importance of objective peer review. It is committed to encouraging and supporting its research teams in this regard. The author(s) confirm(s) that this document has been reviewed and approved by the project’s steering committee and by its program leader. These reviewers evaluated its: • originality • methodology • rigour • compliance with ethical guidelines • conclusions against results • conformity with the principles of the Australian Code for the Responsible Conduct of Research (NHMRC 2018), and provided constructive feedback which was considered and addressed by the author(s).
    [Show full text]
  • Appendix L . Toxicity Assessment of Barossa
    Appendix L . Toxicity Assessment of Barossa Condensate (Jacobs 2017) un-weathered Barossa Environmental Studies ConocoPhillips Toxicity Assessment of Barossa-3 Condensate IW021200-NMS-RP-0028 | Rev 1 30 May 2017 Toxicity Assessment of Barossa- 3 Condensate ConocoPhillips Toxicity Assessment of Barossa-3 Condensate Barossa Environmental Studies Project no: IW021200 Document title: Toxicity Assessment of Barossa-3 Condensate Document No.: IW021200-NMS-RP-0028 Revision: Rev 1 Date: 30 May 2017 Client name: ConocoPhillips Project manager: Chris Teasdale Author: Celeste Wilson File name: T:\Transfer\May2017\WVES\TMiley\Barossa Toxicity Report _ Rev 1.docx Jacobs Group (Australia) Pty Limited ABN 37 001 024 095 11th Floor, Durack Centre 263 Adelaide Terrace PO Box H615 Perth WA 6001 Australia T +61 8 9469 4400 F +61 8 9469 4488 www.jacobs.com © Copyright 2017 Jacobs Group (Australia) Pty Limited. The concepts and information contained in this document are the property of Jacobs. Use or copying of this document in whole or in part without the written permission of Jacobs constitutes an infringement of copyright. Limitation: This report has been prepared on behalf of, and for the exclusive use of Jacobs’ Client, and is subject to, and issued in accordance with, the provisions of the contract between Jacobs and the Client. Jacobs accepts no liability or responsibility whatsoever for, or in respect of, any use of, or reliance upon, this report by any third party. Document history and status Revision Date Description By Review Approved A 14/12/2015 Technical Review C Wilson M Huber C Teasdale 0 4/01/2016 Final report C Wilson C Teasdale C Teasdale 1 30/05/2017 Update report for inclusion in technical appendices of the C Wilson T Miley T Miley Barossa OPP IW021200-NMS-RP-0028 i Toxicity Assessment of Barossa-3 Condensate Contents Abbreviations and Glossary ................................................................................................................................
    [Show full text]
  • Feasibility of Shellfish Reef Restoration in a South-Western Australian Estuary
    Feasibility of shellfish reef restoration in a south-western Australian estuary This thesis is presented for the degree of Bachelor of Science Honours, College of Science, Health, Engineering and Education, of Murdoch University, 2019 Lauren Peck (BSc) Declaration I declare that this thesis is my own account of my research and contains as its main content work which has not previously been submitted for a degree at any tertiary education institution. Lauren Peck Abstract With 85% of oyster reefs lost around the world within the last 130 years, these reefs are now one of the most threatened marine habitats in the world and in Australia less than 10% of naturally occurring oyster reefs remain. Shellfish reefs provide a range of services that promote healthy ecosystems, including water filtration, fish production and shoreline erosion. In estuaries, these services are extremely important as human activities are increasing degrading these environments. Thus, shellfish reefs can aid in restoring ecosystem functioning of an estuary while providing additional ecosystem services. The aim of this study was to determine the feasibility of a number of shellfish reef options for the Peel-Harvey Estuary in south-western Australia. This first involved exploring the historical and current distributions of shellfish to elucidate whether shellfish reefs existed in the Peel-Harvey Estuary and to identify a suite of candidate species. A bioclimatic modelling approach was then used to elucidate the suitability of five native Australian oyster species to the environmental conditions that occur in the Peel-Harvey Estuary, the largest estuary in south-western Australia. Laboratory tank trials were then used to validate the results of that model, in which the two most suitable species, i.e.
    [Show full text]
  • Molluscan Fisheries and Aquaculture World Congress of Malacology Perth 2004
    Molluscan Fisheries and Aquaculture World Congress of Malacology Perth 2004 Dr F. Wells Dr L. Joll Dr G. Maguire Project No. 2003/300 ISBN 1 920843 30 2 Copyright Fisheries Research and Development Corporation and Western Australian Museum 2006. 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. 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. 2 TABLE OF CONTENTS Page No. NONTECHNICAL SUMMARY ................................................................................... 4 ACKNOWLEDGEMENTS ......................................................................................... 5 BACKGROUND ........................................................................................................ 5 NEED ........................................................................................................ 5 OBJECTIVES ........................................................................................................ 5 METHODS .......................................................................................................
    [Show full text]
  • Final Report
    FRDC Project 2006/064 FINAL REPORT Aquatic Animal Health Subprogram: Development of diagnostic tests to assess the impact of haplosporidian infections in pearl oysters. D. Bearham, S.R Raidal, John Creeper, Frances Stephens, Brian Jones, Brett McCallum, P.K. Nicholls. November 2009 FRDC Project 2006/064 1 FRDC Project 2006/064 Authors: D. Bearham, P.K. Nicholls, S.R Raidal, John Creeper, Frances Stephens, Brian Jones, Brett McCallum. Title: Aquatic Animal Health Subprogram: Development of diagnostic tests to assess the impact of haplosporidian infections in pearl oysters ISBN: 978-0-86905-989-0 © Copyright, Fisheries Research and Development Corporation, Murdoch University, The Western Australian Department of Fisheries, Pearl Producers Association and Douglas Bearham, 2009. 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. The Fisheries Research and Development Corporation plans, invests in and manages fisheries research and development throughout Australia. It is a federal statutory authority jointly funded by the Australian Government and the fishing industry. The authors do not warrant that the information in this book is free from errors or omissions. The authors do not accept any form of liability, be it contractural, tortious or otherwise, for the contents of this book or for any consequences arising from its use or any reliance placed upon it. The information, opinions and advice contained in this book may not relate to, or be relevant to, reader’s particular circumstances.
    [Show full text]
  • (Saccostrea Echinata) Reveals Population Subdivision and Informs Sustainable Aquaculture Development Samantha J
    View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by ResearchOnline at James Cook University Nowland et al. BMC Genomics (2019) 20:711 https://doi.org/10.1186/s12864-019-6052-z RESEARCH ARTICLE Open Access Mitochondrial and nuclear genetic analyses of the tropical black-lip rock oyster (Saccostrea echinata) reveals population subdivision and informs sustainable aquaculture development Samantha J. Nowland1,2,4* , Catarina N. S. Silva3, Paul C. Southgate4 and Jan M. Strugnell3 Abstract Background: The black-lip rock oyster (Saccostrea echinata) has considerable potential for aquaculture throughout the tropics. Previous attempts to farm S. echinata failed due to an insufficient supply of wild spat; however, the prospect of hatchery-based aquaculture has stimulated renewed interest, and small-scale farming is underway across northern Australia and in New Caledonia. The absence of knowledge surrounding the population genetic structure of this species has raised concerns about the genetic impacts of this emerging aquaculture industry. This study is the first to examine population genetics of S. echinata and employs both mitochondrial cytochrome c oxidase subunit I gene (COI) and single nucleotide polymorphism (SNP) markers. Results: The mitochondrial COI data set included 273 sequences of 594 base pair length, which comprised 74 haplotypes. The SNP data set included 27,887 filtered SNPs for 272 oysters and of these 31 SNPs were identified as candidate adaptive loci. Data from the mitochondrial COI analyses, supports a broad tropical Indo-Pacific distribution of S. echinata, and showed high haplotype and nucleotide diversities (0.887–1.000 and 0.005–0.008, respectively).
    [Show full text]
  • IMPACTS of SELECTIVE and NON-SELECTIVE FISHING GEARS on the INLAND WATERS of BANGLADESH
    A checklist of molluscans inhabiting Bandri Beach along the Jiwani coast, Balochistan, Pakistan Item Type article Authors Ghani, Abdul; Afsar, Nuzhat; Moazzam, Muhammad Download date 26/09/2021 00:44:50 Link to Item http://hdl.handle.net/1834/40825 Pakistan Journal of Marine Sciences, Vol. 27(1), 61-71, 2018. A CHECKLIST OF MOLLUSCANS INHABITING BANDRI BEACH ALONG THE JIWANI COAST, BALOCHISTAN, PAKISTAN Abdul Ghani, Nuzhat Afsar and Muhammad Moazzam Institute of Marine Science, University of Karachi, Karachi-75270, Pakistan. (AG, NA); WWF, Karachi office, Bungalow # 46/K, Block 6, P.E.C.H.S, Shahrah-e-Faisal, Karachi (MM). email: [email protected]; [email protected] ABSTRACT: Main object of the study was to record the composition and diversity of intertidal molluscan species of the Bandri Beach along the Jiwani coast, Balochistan to develop baseline data information which could be helpful in future conservation perspective. The study revealed the presence of ninety eight (98) species comprising of sixty eight (68) gastropods, twenty six (26) bivalves, two (2) scaphopods, one (1) Polyplacophora and one (1) Cephalopod species at two selected points of the Bandri Beach, Jiwani coast. Among these molluscan species, members of cerithids, trochid Umbonium vestairium, bivalve Branchidontes variabilis and oyster Crassostrea madrasensis were found in abundance. Study presents the first report on the occurrence of molluscan species in the area. KEYWORDS: Molluscs, checklist, Bandri Beach, Jiwani, Balochistan coast, Pakistan. INTRODUCTION Molluscan species of Pakistan coast especially those found along the Sindh coast have been studied extensively and several authors have published papers on species diversity, distribution, and abundance (Burney and Barkati, 1995; Nasreen et al., 2000; Rahman and Barkati, 2004; Afsar et al., 2012; Rahman and Barkati, 2012; Afsar et al., 2013 a,b), as compared to molluscan abunadance and distribution studies along Balochistan coast.
    [Show full text]
  • FRDC Final Report Design Standard
    Workshop Report National Tropical Oyster Workshop Darwin, 22-23 October 2018 Matthew Osborne 29-04-2019 FRDC Project No. 2018-115 Version 1.0 1 July 2013 © 2019 Fisheries Research and Development Corporation. All rights reserved. ISBN 0 7245 4771 1 Workshop Report - National Tropical Oyster Workshop, Darwin, 22-23 October 2018 FRDC 2018-115 Ownership of intellectual property rights Unless otherwise noted, copyright (and any other intellectual property rights, if any) in this publication are owned by the Fisheries Research and Development Corporation (FRDC) and the Northern Territory (NT) Department of Primary industry and Resources (DPIR). This publication (and any information sourced from it) should be attributed to Osborne, M., 2018, Workshop Report - National Tropical Oyster Workshop, Darwin, 22-23 October 2018, DPIR, Darwin, December. CC BY 3.0] 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 do not warrant that the information in this document is free from errors or omissions.
    [Show full text]
  • Edible Oyster Aquaculture in the Pilbara and Gascoyne Regions of Western Australia
    AUSTRALIAN VENTURE CONSULTANTS PTY LTD Edible Oyster Aquaculture in the Pilbara and Gascoyne Regions of Western Australia A preliminary feasibility assessment June 2016 1 AUSTRALIAN VENTURE CONSULTANTS PTY LTD CONTENTS Executive Summary ................................................................................................................................... 3 1. Introduction ......................................................................................................................................... 7 1.1. Background to this Study ........................................................................................................... 7 1.2. Oyster Production in Australia .................................................................................................. 9 2. Species Analysis ................................................................................................................................ 11 2.1. Species Options ......................................................................................................................... 11 2.2. Fish Health Issues ........................................................................................................................ 19 2.3. Species selection ....................................................................................................................... 29 3. Potential aquaculture sites ............................................................................................................. 30 3.1. Methodology ............................................................................................................................
    [Show full text]