The Importance of Climate Change and Other Drivers Planning for Aquaculture

Total Page:16

File Type:pdf, Size:1020Kb

The Importance of Climate Change and Other Drivers Planning for Aquaculture FAO ISSN 2070-6103 47 FISHERIES AND AQUACULTURE PROCEEDINGS FAO FISHERIES AND AQUACULTURE PROCEEDINGS 47 47 Planning for aquaculture diversification: the importance of climate change and other drivers Planning for aquaculture FAO Technical Workshop diversification: the importance of Planning for aquaculture diversification: the importance of climate change and other drivers Planning for aquaculture 23–25 June 2016 FAO Rome, Italy climate change and other drivers Aquaculture is the world’s most diverse farming system in terms of number of species, methods and the environments where the FAO Technical Workshop farms are located. These proceedings report the results of a 23–25 June 2016 workshop convened by FAO and World Fisheries Trust (Canada) to FAO Rome, Italy summarize diversification successes and opportunities in North America, South America, Asia-Pacific, Europe and Africa, and to identify general principles that can help guide diversification in aquaculture.The document includes an assessment of main strategies and future steps for aquaculture diversification, not only in terms of purely economic costs but also in development costs, including evaluation and mitigation of environmental and social impacts and establishment of species-specific biosecurity frameworks. ISBN 978-92-5-109788-5 ISSN 2070-6103 COMING SOON FAO 9 789251 097885 I7358EN/1/06.17 Cover design: José Luis Castilla Civit FAO FISHERIES AND AQUACULTURE PROCEEDINGS 47 Planning for aquaculture diversification: the importance of climate change and other drivers FAO Technical Workshop 23–25 June 2016 FAO Rome, Italy Edited by Brian Harvey President Fugu Fisheries Ltd. Nanaimo, Canada Doris Soto Senior Scientist, INCAR, the Republic of Chile Former Senior Aquaculture Officer, FAO, Rome Puerto Montt, the Republic of Chile Joachim Carolsfeld Executive Director World Fisheries Trust Victoria, British Columbia, Canada Malcolm Beveridge Acting Branch Head, FIAA FAO Fisheries and Aquaculture Department Rome, Italy and Devin M. Bartley Senior Research Associate World Fisheries Trust Rome, Italy FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS Rome, 2017 The designations employed and the presentation of material in this information product do not imply the expression of any opinion whatsoever on the part of the Food and Agriculture Organization of the United Nations (FAO) concerning the legal or development status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. The mention of specific companies or products of manufacturers, whether or not these have been patented, does not imply that these have been endorsed or recommended by FAO in preference to others of a similar nature that are not mentioned. The views expressed in this information product are those of the author(s) and do not necessarily reflect the views or policies of FAO. ISBN 978-92-5-109788-5 © FAO, 2017 FAO encourages the use, reproduction and dissemination of material in this information product. Except where otherwise indicated, material may be copied, downloaded and printed for private study, research and teaching purposes, or for use in non-commercial products or services, provided that appropriate acknowledgement of FAO as the source and copyright holder is given and that FAO’s endorsement of users’ views, products or services is not implied in any way. All requests for translation and adaptation rights, and for resale and other commercial use rights should be made via www.fao.org/contact-us/licence-request or addressed to [email protected]. FAO information products are available on the FAO website (www.fao.org/publications) and can be purchased through [email protected]. This publication has been printed using selected products and processes so as to ensure minimal environmental impact and to promote sustainable forest management. iii Preparation of this document This publication is the proceedings of the Food and Agriculture Organization of the United Nations expert technical workshop on Planning for aquaculture diversification: the importance of climate change and other drivers, which was held in Rome, Italy, 23–25 June, 2016 and organized by the Aquaculture Branch of the Fisheries and Aquaculture Department and World Fisheries Trust (Canada). The workshop was attended by 16 internationally renowned experts from nine countries representing the private sector, industry, academia, government and research organizations, and five staff members from FAO. The workshop was financed by the Government of the Kingdom of Norway whose support is gratefully acknowledged. iv Abstract Aquaculture is the world’s most diverse farming system in terms of number of species, methods and the environments where the farms are located. Member countries are increasingly requesting guidance from FAO regarding diversification of aquaculture as wild fisheries reach their limits, human population grows and the demand for aquatic plants and animals for food and other uses increases. In response to these requests, FAO and World Fisheries Trust (Canada) convened the workshop Planning for aquaculture diversification: the importance of climate change and other drivers. Although there is an ever-increasing number of species being farmed in aquaculture and diversification is high in some cases, further diversification is constrained by limitations in technology, profitability, regulations, sustainability and enabling environments that include community acceptance. However, the natural diversity and diminishing stocks of capture fisheries provide an ongoing incentive to diversify and farm new animals and plants. The workshop identified three main strategies for aquaculture diversification: 1) increase the number of species being farmed; 2) increase the evenness of farmed species; and 3) increase the diversity within currently farmed species by developing new strains. The workshop identified some primary drivers of diversification: market demand (including export opportunities), funding opportunities, competition and climate change, as well as other environmental and social factors. Diversification of species and culture systems and a more even distribution of production could provide resilience in the face of a changing climate and other external drivers and add economic, social and ecological insurance to aquaculture systems. However, diversification is not without risks and may not always be a viable means to increase fish production. In addition to purely economic costs there will be associated development costs, including evaluation and mitigation of environmental and social impacts and establishment of species-specific biosecurity frameworks. The workshop identified general principles that can help guide diversification in aquaculture. Harvey, B., Soto, D., Carolsfeld, J., Beveridge, M. & Bartley, D.M. eds. 2017. Planning for aquaculture diversification: the importance of climate change and other drivers. FAO Technical Workshop, 23–25 June 2016, FAO Rome. FAO Fisheries and Aquaculture Proceedings No. 47. Rome, FAO. 166 pp. v Contents Preparation of this document iii Abstract iv Acknowledgements vi Abbreviations and acronyms vii Genesis of the workshop 1 Background 1 Objectives 2 Deliberations of the workshop 2 Aquaculture data 2 Concept of diversification in aquaculture 2 Drivers of diversification 4 Constraints to diversification 5 Regional patterns of diversification 5 Key issues 6 Advice to member countries 8 Principles for aquaculture diversification 8 APPENDIXES APPENDIX 1: Agenda of the workshop on Aquaculture diversification as an adaptation approach to climate change and other external forcing factors 11 APPENDIX 2: List of Participants 13 APPENDIX 3: Technical presentations 15 Paper 1: Diversification in aquaculture: species, farmed types and culture systems 15 Paper 2: Aquaculture diversification in europe: The Kingdom of Spain and the Kingdom of Norway 37 Paper 3: Aquaculture diversification in South America: general views and facts and case studies of the Republic of Chile and the federative republic of brazil 51 Paper 4: Diversification of aquaculture in North America 93 Paper 5: Aquaculture diversification in Asia 111 Paper 6: Adaptation of aquaculture to climate and external forcing in Africa 123 Paper 7: Pathways for aquaculture diversification 135 vi Tambaqui Colossoma macropomum broodstock in Tocantins state, northern Brazil PHOTO CREDIT: JEFFERSON CHRISTOFOLETTI vii Abbreviations and acronyms AAC Aquaculture Association of Canada ABCC Brazilian Association of Shrimp Farmers AGIFISH An Giang Fisheries Import-Export Join Stock Company APFIC Asia-Pacific Fishery Commission ASC Aquaculture Stewardship Council ASFA Aquatic Sciences And Fisheries Abstracts ASFIS Aquatic Sciences And Fisheries Information System BAP Best Aquaculture Practices BCSGA British Columbia Shellfish Growers’ Association BMLP Brazilian Mariculture Linkages Project BMP best management practice BNDES Brazilian National Development and Social Bank CAPES Coordination for the improvement of Higher Level Personnel of the Ministry of Education, the Federative Republic of Brazil CBD Convention on Biological Diversity CCRF Code of Conduct for Responsible Fisheries CEPTA Aquaculture Research and Training Center CERLA Latin American Regional Aquaculture Centre CGIAR Consortium of International Agricultural Research Centers CIDA Canadian International Development Agency CIRAD Agricultural Research for Development CITES Convention on International Trade in Endangered
Recommended publications
  • The Role of Agriculture Finance in Modern Technologies Adoption For
    The role of agriculture finance in modern technologies adoption for enhanced productivity and rural household economic wellbeing in Ghana: A case study of rice farmers in Shai-Osudoku District. Evans Sackey Teye1*(†) & Philip Tetteh Quarshie23(†) 1 School of Public Services and Governance, Ghana Institute of Management and Public Administration, Accra, Ghana 2 Department of Geography Environment and Geomatics, University of Guelph, Ontario, Canada 3 Guelph Institute of Development Studies, University of Guelph, Ontario, Canada *Corresponding author P.O. Box CE 12116, Tema, Ghana Email: [email protected] Abstract Rural and agricultural finance innovations have significant potential to improve the livelihoods and food security of the poor. Although microfinance has been widely studied, an extensive knowledge gap still exists on the nuts and bolts of expanding access to rural and agricultural finance. This study uses focus group discussion, key informant interview, and quantitative household survey to explore how smallholders access credits and loans influence adoption of modern production technologies and what are perceived limitations to access these financial instruments in the Shia-Osuduku District in the Greater Accra Region of Ghana. The specific objectives of the study are; (1) to assess the challenges rice farmers face in accessing finance, (2) to determine if access to finance impacts the adoption of modern rice production technologies and (3) to determine whether loan investments in improved technologies increase productivity and income levels of farmers. The study noted that issues of mistrust for smallholder farmers by financial institutions act as barriers to facilitating their access to loans and credits. Banks and financial institutions relay their mistrust through actions such as requesting outrageous collateral, guarantors, a high sum of savings capital, and a high-interest rate for agriculture loans, delays, and bureaucratic processes in accessing loans.
    [Show full text]
  • SUSTAINABLE FISHERIES and RESPONSIBLE AQUACULTURE: a Guide for USAID Staff and Partners
    SUSTAINABLE FISHERIES AND RESPONSIBLE AQUACULTURE: A Guide for USAID Staff and Partners June 2013 ABOUT THIS GUIDE GOAL This guide provides basic information on how to design programs to reform capture fisheries (also referred to as “wild” fisheries) and aquaculture sectors to ensure sound and effective development, environmental sustainability, economic profitability, and social responsibility. To achieve these objectives, this document focuses on ways to reduce the threats to biodiversity and ecosystem productivity through improved governance and more integrated planning and management practices. In the face of food insecurity, global climate change, and increasing population pressures, it is imperative that development programs help to maintain ecosystem resilience and the multiple goods and services that ecosystems provide. Conserving biodiversity and ecosystem functions are central to maintaining ecosystem integrity, health, and productivity. The intent of the guide is not to suggest that fisheries and aquaculture are interchangeable: these sectors are unique although linked. The world cannot afford to neglect global fisheries and expect aquaculture to fill that void. Global food security will not be achievable without reversing the decline of fisheries, restoring fisheries productivity, and moving towards more environmentally friendly and responsible aquaculture. There is a need for reform in both fisheries and aquaculture to reduce their environmental and social impacts. USAID’s experience has shown that well-designed programs can reform capture fisheries management, reducing threats to biodiversity while leading to increased productivity, incomes, and livelihoods. Agency programs have focused on an ecosystem-based approach to management in conjunction with improved governance, secure tenure and access to resources, and the application of modern management practices.
    [Show full text]
  • A Values-Based Approach to Exploring Synergies Between Livestock Farming and Landscape Conservation in Galicia (Spain)
    sustainability Article A Values-Based Approach to Exploring Synergies between Livestock Farming and Landscape Conservation in Galicia (Spain) Paul Swagemakers 1,*, Maria Dolores Dominguez Garcia 2, Amanda Onofa Torres 3, Henk Oostindie 4 and Jeroen C. J. Groot 3 ID 1 Department of Applied Economics, Faculty of Business and Tourism, University of Vigo, Campus Universitario As Lagoas s/n, 32004 Ourense, Spain 2 Department of Applied Economics IV, Faculty of Social Work, Complutense University of Madrid, Campus de Somosaguas, 28223 Pozuelo de Alarcón, Spain; [email protected] 3 Farming Systems Ecology Group, Department of Plant Sciences, Wageningen University & Research, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands; [email protected] (A.O.T.); [email protected] (J.C.J.G.) 4 Rural Sociology Group, Department of Social Sciences, Wageningen University, Hollandseweg 1, 6706 KN Wageningen, The Netherlands; [email protected] * Correspondence: [email protected]; Tel.: +34-986-818-644 Received: 27 September 2017; Accepted: 26 October 2017; Published: 31 October 2017 Abstract: The path to sustainable development involves creating coherence and synergies in the complex relationships between economic and ecological systems. In sustaining their farm businesses farmers’ differing values influence their decisions about agroecosystem management, leading them to adopt diverging farming practices. This study explores the values of dairy and beef cattle farmers, the assumptions that underpin them, and the various ways that these lead farmers to combine food production with the provision of other ecosystem services, such as landscape conservation and biodiversity preservation. This paper draws on empirical research from Galicia (Spain), a marginal and mountainous European region whose livestock production system has undergone modernization in recent decades, exposing strategic economic, social and ecological vulnerabilities.
    [Show full text]
  • Pacific Plate Biogeography, with Special Reference to Shorefishes
    Pacific Plate Biogeography, with Special Reference to Shorefishes VICTOR G. SPRINGER m SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY • NUMBER 367 SERIES PUBLICATIONS OF THE SMITHSONIAN INSTITUTION Emphasis upon publication as a means of "diffusing knowledge" was expressed by the first Secretary of the Smithsonian. In his formal plan for the Institution, Joseph Henry outlined a program that included the following statement: "It is proposed to publish a series of reports, giving an account of the new discoveries in science, and of the changes made from year to year in all branches of knowledge." This theme of basic research has been adhered to through the years by thousands of titles issued in series publications under the Smithsonian imprint, commencing with Smithsonian Contributions to Knowledge in 1848 and continuing with the following active series: Smithsonian Contributions to Anthropology Smithsonian Contributions to Astrophysics Smithsonian Contributions to Botany Smithsonian Contributions to the Earth Sciences Smithsonian Contributions to the Marine Sciences Smithsonian Contributions to Paleobiology Smithsonian Contributions to Zoo/ogy Smithsonian Studies in Air and Space Smithsonian Studies in History and Technology In these series, the Institution publishes small papers and full-scale monographs that report the research and collections of its various museums and bureaux or of professional colleagues in the world cf science and scholarship. The publications are distributed by mailing lists to libraries, universities, and similar institutions throughout the world. Papers or monographs submitted for series publication are received by the Smithsonian Institution Press, subject to its own review for format and style, only through departments of the various Smithsonian museums or bureaux, where the manuscripts are given substantive review.
    [Show full text]
  • Species Composition and Abundance O Rainfall and Water Level in Va
    International Research Journal of Environmental Sciences ___________________________ _____ ISSN 2319–1414 Vol. 6(6), 12-21, June (2017) Int. Res. J. Environmental Sci. Species composition and abundance of fishes with seasonal fluctuations of rainfall and water level in Vavuniya reservoir, Sri Lanka A.E.S. Patrick 1* S. Kuganathan 2 and Udeni Edirisinghe 3 1Department of Bio-Science, Faculty of Applied Science, Vavuniya Campus, University of Jaffna, Sri Lanka 2Department of Fisheries, Faculty of Science, University of Jaffna, Sri Lanka 3Postgraduate Institute of Agriculture, University of Peradeniya, Sri Lank a [email protected] Available online at: www.isca.in, www.isca.me Received 6th April 2017, revised 13 th June 2017, accepted 19 th June 2017 Abstract Dramatic loss of freshwater fish bio-diversity and survival of un -described local inland fish species in Sri Lanka justifies the requirement of systemic surveys. Extreme hydro -climatic events and its consequent shifts in seasonality lead to water scarcity in dry zone aquatic resources such as Vavuniya reservoir, threatening fish species richness and abundance. Weekly filed surveys were made to collect biological, ecological and hydro -climatic data from January, 2013 to July, 2014. Fish species composition a nd abundance in the catch were estimated by using random sampling at the landing site. Clarias brachysoma, Esomus thermoicos and Labeo lankae were the endemic freshwater fish species identified along with 16 indigenous and 8 exotic species. A significantly higher abundance of indigenous species was found in July and August 2013. During these periods, higher rainfall was observed but water level receded to medium level. Peak abundance of Channa striata (July & August 2013 and March & July 2 014), Puntius dorsalis (August 2013 and July 2014) and P.
    [Show full text]
  • Fisheries Series Part II: Commercial Policy & Management for Commercial Fishing
    SAILFISHVERSION 14 TEENS TAKE ON BILLFISH CONSERVATION FISHERIES SERIES Part II: Commercial POLICY & MANAGEMENT for Commercial Fishing All About AQUACULTURE RECAPTURE MAPS Jr. Angler Profile SALES DE LA BARRE Cutler Bay Academy Welcomes The Billfish Foundation & Carey Chen CONTENTS Inside this issue of Sailfish FFEATURESEATURES 3 Fisheries Series Part II: Commercial Fishing 5 Aquaculture 7 Policy & Management of Commercial Fisheries 8 Commercial Fishing Review Questions 9 Cutler Bay Academy Students Enjoy Visit from TBF & Carey Chen 10 Billfish Advocacy at South Broward High ALSO INSIDE Get Involved: Track your school’s climate impact Recapture Maps Jr Angler Profile – Sales de La Barre We would like to extend our gratitude to the Fleming Family Foundation and the William H. and Mattie Wattis Harris Foundation for their belief in education as an important conservation tool. The Billfish Founation, educators, students, parents, the ocean and the fish are grateful for our sponsors generous donation that made this issue of Sailfish possible. Copyright 2014 • The Billfish Foundation • Editor: Peter Chaibongsai • Associate Editor: Elizabeth Black • Graphic Designer: Jackie Marsolais Sister Publications: Billfish and Spearfish magazines • Published by The Billfish Foundation • For subscription information contact: [email protected] by Jorie Heilman COMMERCIAL FISHING by Jorie Heilman What provides nutrition to 3 billion people gear advanced, humans could pursue food Top left: Aquacage snapper farm. Top right: Korean fishing boat. Below top to bottom: worldwide and is relied upon by 500 sources that were farther off the coast. Fishing boat in India. Commercial longline boat. Fishermen in the Seychelles. Commercial million people for their livelihoods? The Fish traps and nets were among the fishermen on a dock fixing a net.
    [Show full text]
  • Os Nomes Galegos Dos Moluscos
    A Chave Os nomes galegos dos moluscos 2017 Citación recomendada / Recommended citation: A Chave (2017): Nomes galegos dos moluscos recomendados pola Chave. http://www.achave.gal/wp-content/uploads/achave_osnomesgalegosdos_moluscos.pdf 1 Notas introdutorias O que contén este documento Neste documento fornécense denominacións para as especies de moluscos galegos (e) ou europeos, e tamén para algunhas das especies exóticas máis coñecidas (xeralmente no ámbito divulgativo, por causa do seu interese científico ou económico, ou por seren moi comúns noutras áreas xeográficas). En total, achéganse nomes galegos para 534 especies de moluscos. A estrutura En primeiro lugar preséntase unha clasificación taxonómica que considera as clases, ordes, superfamilias e familias de moluscos. Aquí apúntase, de maneira xeral, os nomes dos moluscos que hai en cada familia. A seguir vén o corpo do documento, onde se indica, especie por especie, alén do nome científico, os nomes galegos e ingleses de cada molusco (nalgún caso, tamén, o nome xenérico para un grupo deles). Ao final inclúese unha listaxe de referencias bibliográficas que foron utilizadas para a elaboración do presente documento. Nalgunhas desas referencias recolléronse ou propuxéronse nomes galegos para os moluscos, quer xenéricos quer específicos. Outras referencias achegan nomes para os moluscos noutras linguas, que tamén foron tidos en conta. Alén diso, inclúense algunhas fontes básicas a respecto da metodoloxía e dos criterios terminolóxicos empregados. 2 Tratamento terminolóxico De modo moi resumido, traballouse nas seguintes liñas e cos seguintes criterios: En primeiro lugar, aprofundouse no acervo lingüístico galego. A respecto dos nomes dos moluscos, a lingua galega é riquísima e dispomos dunha chea de nomes, tanto específicos (que designan un único animal) como xenéricos (que designan varios animais parecidos).
    [Show full text]
  • New Alternative Fishing Gear Suggestions for Trap Fisheries from the Waste Recycle Materials
    MARINE SCIENCE AND TECHNOLOGY BULLETIN VOLUME: 8 ISSUE: 2 DECEMBER 2019 Editor-in-Chief A.Y. Sönmez Kastamonu University, Turkey Co-Editors S. Kale Çanakkale Onsekiz Mart University, Turkey S. Bilen Kastamonu University, Turkey E. Terzi Kastamonu University, Turkey A.E. Kadak Kastamonu University, Turkey Editorial Board A.O. Sudrajat Institut Pertanian Bogor, Indonesia B. Bayraklı Sinop University, Turkey D. Güroy Yalova University, Turkey F. Şen Yüzüncü Yıl University, Turkey G. Biswas Kakdwip Research Centre of Central Institute, India H.H. Atar Ankara University, Turkey İ. Altınok Karadeniz Technical University, Turkey M. Elp Kastamonu University, Turkey M. Sazykina Southern Federal University, Russia M. Gökoğlu Akdeniz University, Turkey M.N. Khan University of the Punjab, Pakistan S. Beqiraj University of Tirana, Albania S. Acarlı Çanakkale Onsekiz Mart University, Turkey S.Z.B. Halun Mindanao State University, Philippines S. Uzunova Institute of Fishing Resources, Bulgaria S. Özdemir Sinop University, Turkey Ş. Kayış Recep Tayyip Erdoğan University, Turkey Ş. Yıldırım Ege University, Turkey T. Yanık Atatürk University, Turkey W. Leal Filho Hamburg University of Applied Sciences, Germany MARINE SCIENCE AND TECH NOLOGY BULLETIN Acknowledgement AUTHOR GUIDELINES Keep these to the absolute minimum and placed before the reference section. References Manuscripts must be submitted to the journal in electronic version only via Citation in text; online submission system at http://dergipark.org.tr/masteb. Please ensure that each reference cited in the text is also presented in the reference list. Cite literature in the text in chronological, followed by Types of Paper alphabetical order like these examples “(Mutlu et al., 2012; Biswas et al., 2016; Original research papers; review articles; short communications; letters to the Yanık and Aslan, 2018)”.
    [Show full text]
  • Life History, Mating Behavior, and Multiple Paternity in Octopus
    LIFE HISTORY, MATING BEHAVIOR, AND MULTIPLE PATERNITY IN OCTOPUS OLIVERI (BERRY, 1914) (CEPHALOPODA: OCTOPODIDAE) A DISSERTATION SUBMITTED TO THE GRADUATE DIVISION OF THE UNIVERSITY OF HAWAI´I AT MĀNOA IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY IN ZOOLOGY DECEMBER 2014 By Heather Anne Ylitalo-Ward Dissertation Committee: Les Watling, Chairperson Rob Toonen James Wood Tom Oliver Jeff Drazen Chuck Birkeland Keywords: Cephalopod, Octopus, Sexual Selection, Multiple Paternity, Mating DEDICATION To my family, I would not have been able to do this without your unending support and love. Thank you for always believing in me. ii ACKNOWLEDGMENTS I would like to thank all of the people who helped me collect the specimens for this study, braving the rocks and the waves in the middle of the night: Leigh Ann Boswell, Shannon Evers, and Steffiny Nelson, you were the hard core tako hunters. I am eternally grateful that you sacrificed your evenings to the octopus gods. Also, thank you to David Harrington (best bucket boy), Bert Tanigutchi, Melanie Hutchinson, Christine Ambrosino, Mark Royer, Chelsea Szydlowski, Ily Iglesias, Katherine Livins, James Wood, Seth Ylitalo-Ward, Jessica Watts, and Steven Zubler. This dissertation would not have happened without the support of my wonderful advisor, Dr. Les Watling. Even though I know he wanted me to study a different kind of “octo” (octocoral), I am so thankful he let me follow my foolish passion for cephalopod sexual selection. Also, he provided me with the opportunity to ride in a submersible, which was one of the most magical moments of my graduate career.
    [Show full text]
  • A Generalized Structure of the Scale of Spotted Scat, Scatophagus Argus (Linnaeus, 1766) Using Light Microscope
    INT. J. BIOL. BIOTECH., 15 (2): 307-310, 2018. A GENERALIZED STRUCTURE OF THE SCALE OF SPOTTED SCAT, SCATOPHAGUS ARGUS (LINNAEUS, 1766) USING LIGHT MICROSCOPE Musarrat-ul-Ain and Rehana Yasmeen Farooq Department of Zoology, University of Karachi, Karachi-75270, Pakistan ABSTRACT This study provides basic information about the structure of scales of Spotted Scat, Scatophagus argus. Three regions of fish body were selected to study the variations in scale structure of S. argus. The result of light-microscopy shows that S. argus has spinoid type of ctenoid scales. Focus was absent in the scale and no or very few numbers of radii were observed only at the anterior margin of the scale and rarely in lateral fields of the scale. Key-words: Spinoid scale, Ctenii, Radii, Circuli, lateral field, Scatophagus argus. INTRODUCTION Scatophagus argus L. is commonly known as Spotted scat and locally known as Dateera and Korgi in Pakistan. They belong to order Perciformes and family Scatophagidae (Bianchi, 1985). Dorsal fin having X-XI spines and 16- 18 soft rays. Anal fin with IV spines, the third spine is larger and stronger than others, and 13-15 soft rays. Body is quadrangular in shape and strongly compressed. They are Indo-Pacific fishes and reported from Fiji, Japan, New Caledonia. Samoa Tonga and the Society Islands (Froese and Pauly, 2016). Coburn and Gaglione (1992) studied the significance of scale characters in correct identification of fishes. Patterson et al. (2002) also used fish scales for their identification. Ferrito et al. (2003) studied microstructures on scale surface. Kaur and Dua (2004) and Jawad (2005) also signifies the role of scale characters in fish identification.
    [Show full text]
  • Genetic Diversity and Population Structure of the Critically Endangered Freshwater Fish Species, the Clanwilliam Sandfish (Labeo Seeberi)
    Genetic Diversity and Population Structure of the critically endangered freshwater fish species, the Clanwilliam sandfish (Labeo seeberi) By Shaun Francois Lesch Thesis presented in partial fulfilment of the requirements for the degree of Master of Science in the Faculty of Natural Science at Stellenbosch University Supervisor: Dr C. Rhode Co-supervisor: Dr R. Slabbert Department of Genetics December 2020 Stellenbosch University https://scholar.sun.ac.za Declaration: By submitting this thesis electronically, I declare that the entirety of the work contained therein is my own, original work, that I am the sole author thereof (save to the extent explicitly otherwise stated), that reproduction and publication thereof by Stellenbosch University will not infringe any third party rights and that I have not previously in its entirety or in part submitted it for obtaining any qualification. Date: December 2020 Copyright © 2020 Stellenbosch University All Rights Reserved i Stellenbosch University https://scholar.sun.ac.za Abstract: Labeo spp. are large freshwater fish found throughout southern Asia, the Middle East and Africa. The genus is characterised by specialised structures around the mouth and lips making it adapted to herbivorous feeding (algae and detritus). Clanwilliam sandfish (Labeo seeberi) was once widespread throughout its natural habitat (Olifants-Doring River system), but significant decreases in population size have seen them become absent in the Olifants River and retreat to the headwaters in the tributaries of the Doring River. Currently sandfish are confined to three populations namely the Oorlogskloof Nature Reserve (OKNR), Rietkuil (Riet) and Bos, with OKNR being the largest of the three and deemed the species sanctuary.
    [Show full text]
  • Introduction to Fisheries Management
    LECTURE NNOTE ON FIS 201 (2Units) INTRODUCTION TO FISHERIES MANAGEMENT PREPARED BY DR (MRS) IKENWEIWE N. BOLATITO AQUACULTURE AND FISHERIES DEPARTMENT UNIVERSITY OF AGRICULTURE,ABEOKUTA 1 INTRODUCTION ICTHYOLOGY is the scientific study of fish. Fish, because of the possession of notochord belong to the phylum chordata. They are most numerous vertebrates. About 20,000 species are known to science, and compare to other classes, aves 98,600species and mammals 8600species, reptiles 6,000 spandamphibians 2,000species.Fish also in various shape and forms from the smallest niamoy17mmT.L the giant whale shark that measures 15m and heights 25 tonnes. Fish are poikilothermic cold blooded animals that live in aquatic environment Most fish , especially the recent species, have scales on their body and survive in aquatic environment by the use of gills for respiration. Another major characteristic of a typical fish is the presence of gill slits which cover the gills on the posterior. (1) FISH TAXONOMY. Everyone is at heart a taxonomist whether by virtue or necessity or because of mere curiosity. 1. To know/identify the difference component in a fish population. That is to name and arrange. 2. To study the population dynamics in a population. (Number of each species in a population.) 3. Important in fish culture propagation – to know the species of fish that is most suitable for culture. 4. To exchange information to people in other parts of the world living known that both are dealing on the same species. 5. Reduce confusion as same Latin word generally acceptable worldwide are used while vernacular names differ form one location to another.
    [Show full text]