DOCSLIB.ORG

PP-4. Monitoring of Fish Supply to Resorts and Setting up of an Ecolabel Certification

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

PP-4. Monitoring of Fish Supply to Resorts and Setting up of an Ecolabel Certification 1) Report on Survey on Reef Fish Landings to Tourist Resorts 2) Guidelines on Best Fishing and Fish Handling Practices 3) Overview of reef fish sampling in K. Dhiffushi – Nov-Dec 2016 REPORT ON SURVEY ON REEF FISH LANDINGS TO TOURIST RESORTS May 2016 Muawin YOOSUF, Ministry of Fisheries and Agriculture with the technical assistance of Bernard ADRIEN, MASPLAN This survey was carried out as part of a Pilot Project under the Project for the Formulation of Master Plan for Sustainable Fisheries (MASPLAN), a technical cooperation project of the Japan International Cooperation Agency (JICA). All pictures taken by Bernard Adrien. REPORT ON SURVEY ON REEF FISH LANDINGS TO RESORTS – MAY 2016 1 Table of Contents 1 INTRODUCTION .................................................................................................................................3 2 METHOD ..............................................................................................................................................4 3 RESULTS & ANALYSIS .....................................................................................................................5 3.1 Estimates on reef fish production ..................................................................................................5 Estimate of Annual Reef Fish Landings to Resorts from the present survey ................................5 Comparison on Annual Reef Fish Landings to Resorts with previous surveys ............................5 Reef Fish Exports ..........................................................................................................................6 3.2 Indications on the linkage between reef fish suppliers and resorts ...............................................6 Frequency of purchase ...................................................................................................................6 Composition ..................................................................................................................................6 Origin of the supply .......................................................................................................................7 Benefits provided by resorts to fishermen .....................................................................................8 Price of Reef Fish ..........................................................................................................................9 Good fishing practices ................................................................................................................ 10 Mode of fish preservation and quality ........................................................................................ 11 4 CONCLUSION AND RECOMMENDATION ................................................................................. 13 4.1 Further understanding on the dynamics of the reef fish value chain in the country ................... 13 4.2 Update on the MSY for reef fish ................................................................................................ 13 4.3 Promotion of good fishing and fish handling practices .............................................................. 13 5 BIBLIOGRAPHY .............................................................................................................................. 15 ANNEX 1: Questionnaire used for the survey ........................................................................................... 16 REPORT ON SURVEY ON REEF FISH LANDINGS TO RESORTS – MAY 2016 2 1 INTRODUCTION A Pilot Project on Reef Fisheries was designed in 2015, within the implementation of the MASPLAN Project, with a major objective to set up the basis for proper monitoring of reef fisheries resources on a continuous basis, with the ultimate goal of sustainably managing the Maldivian reef fisheries and conserving the integrity of the reef ecosystems; i.e. set up the basis for the design and implementation of a Reef Fisheries Management Plan. One of the expected outputs of this Pilot Project is to come up with a better understanding on the reef fish value chain, more specifically in Malé City and North Malé Atoll. To that effect, one activity has been identified as “Implementation and analysis of a rapid survey on fish supply to resorts”. It is believed that the tourism sector in Maldives is the largest market for locally harvested reef fish. Until the emergence of tourism sector, the reef fishery was essentially a subsistence fishery, and primarily used for local consumption. Although previous studies on reef fishery had estimated the reef landings to resorts, the figures were estimated using data from a limited number of resorts. This report presents the results of the rapid survey on reef fish landings to resorts of Maldives conducted in November and December 2015, and a review of the figures on reef fish landings, given in previous studies (the scope of the present study has been expanded from merely Malé and North Malé Atoll to the whole country, so as to give a larger outlook and be compared with these previous nation-wide studies). The primary objective of the survey was to estimate the annual reef fish landings to resorts in Maldives and compare with the figures on reef fish reported through national fishery statistics. The survey also gathered information about various aspects of reef fish landings (e.g. market prices, fishing practices of the suppliers, quality of the fish supplied to the resorts etc.), which may be helpful for fisheries management and development purposes. REPORT ON SURVEY ON REEF FISH LANDINGS TO RESORTS – MAY 2016 3 2 METHOD The survey was carried out using a questionnaire designed for collecting data on various aspects of reef fish landings to resorts of Maldives. The questionnaire was converted into a fillable online form, to be sent to resort personnel via email (see Annex 1.) An initial list of all resorts of Maldives with emails and telephone numbers was compiled and updated. The link to the survey form was sent to the publicly available email addresses of all the resorts, with a detailed email with explanation of the purpose and expected output of the survey. This initial email contained a request to forward the questionnaire to be filled, to a relevant department or personnel within the respective resort. The survey questionnaire was filled by either the chef in charge or the purchase manager of the respective resort. Of the 112 operational resort properties in Maldives, 52 sent responses (i.e. a quite relevant 46.4%)1. The survey forms received from the resorts were imported directly into an Excel file at MoFA. The data from the survey was complemented with most recent tourism statistics for accurate estimation of the total reef fish landings to the resort sector of Maldives. The calculations were based on the statistics exclusive to the resorts (e.g. bed capacity, occupancy and tourist nights). The data on consumption of reef fish by tourist hotels, guest houses and safari vessels, as well as by the general public (national market), were not estimated through the survey, since those operations are thought to have different dynamics and would require specific data collection schemes. Hence, the results of the survey, as initially foreseen, are an exclusive representation of the resorts of Maldives, and not the tourism sector as a whole, or the national market. Survey Participant Resort Distribution 50 45 40 35 30 25 20 15 10 5 0 Raa Baa Thaa Faafu Kaafu Seenu Vaavu Noonu Laamu Dhaalu Meemu Haa Alifu Shaviyani Lhaviyani Alifu Alifu Gnyaviyani Haa Dhaalu GaafuAlifu Alifu Dhaalu GaafuDhaalu Operational Resorts Respondents Figure 1: Bar chart depicting participant resort distribution and the number of operational resorts Registered bed capacity for each of the 52 resorts was retrieved from the Tourism Yearbook 2015 published by Ministry of Tourism. As of November 2015, the registered bed capacity for all tourist resorts was 24,511 beds, which corresponds to 6,524,432 bed nights for the period December 2014 to November 2015. 1 It should be stressed that in most cases, follow-up phone calls were necessary to get the expected answer to the questionnaire from the resorts. When the total number of answers reached about half the total number of resorts, the sample size was deemed satisfactory, and no further insistence was exerted towards the remaining resorts. REPORT ON SURVEY ON REEF FISH LANDINGS TO RESORTS – MAY 2016 4 3 RESULTS & ANALYSIS 3.1 Estimates on reef fish production Estimate of Annual Reef Fish Landings to Resorts from the present survey The survey found that, on average, a resort purchased (landed) 520.5 kg of reef fish per week, as well as 370.3 kg of tuna2. Using the total quantity of reef fish landings to resorts and the total number of registered beds for each resort, the consumption of reef fish was calculated at 0.44 kg per registered bed per night.3 Extrapolation of the consumption rate for reef fish, using the bed capacity of all resorts, gives a quantity of 3,945.8 tons of reef fish landings per year. Using this estimated total quantity of reef fish landings, and the total number of tourist bed nights for the period December 2014 to November 2015, consumption per tourist bed night was calculated at 0.60 kg, which can be used for better comparison with figures from previous studies shown in the section below. Comparison on Annual Reef Fish Landings to Resorts with previous surveys
Recommended publications
  • Cultural Fish Cultivation in Floating Network in Kelurahan Belawan Sicanang Kota Medan

    Cultural Fish Cultivation in Floating Network in Kelurahan Belawan Sicanang Kota Medan

    ISSN Printed Version : 2549-4341 ISSN Online Version : 2549-418X ABDIMAS TALENTA 4 (1) 2019 : 32-37 http://jurnal.usu.ac.id/abdimas Salmiah. et al. Cultural Fish Cultivation In Floating Network In Kelurahan Belawan Sicanang Kota Medan. CULTURAL FISH CULTIVATION IN FLOATING NETWORK IN KELURAHAN BELAWAN SICANANG KOTA MEDAN Salmiah1*, Charloq2, Thomson Sebayang3 123 Faculty of Agriculture University of North Sumatra Abstract Grouper is one of the non-oil and gas export commodities that has the potential to be developed. As fish, fish consumption is much needed for restaurants and luxury hotels. The weight range of 500 - 100 grams / head, especially in living conditions, has a high price compared to in the form of dead fish. In 1999, research and development for multi-species harchery carried out jointly by the Gondol Marine Aquaculture Research Center with JICA first successfully produced mass of duck grouper seeds, cromileptes altivelis and tiger grouper seeds (Kawahara, et. Al ., 2000; Sugama et.al., 2001). Whereas to mass produce sunu grouper seeds in 2005. Technology development has been disseminated to government and private hatcheries, so that the production of duck grouper seeds has increased dramatically and more than 1 million seeds in 2001 (Kawahara and Ismi, 2003). This technology is also applied to the production of tiger grouper seeds, Ephinephelus fuscoguttatus by private hatcheries. In 2002, tiger grouper seed production was more than 2.6 million. For sunu groupers up to now, more than 0.5 million in 2006. Belawan Sicanang Village Medan Belawan District Medan City is an island surrounded by several tributaries which empties into the Deli River.
  • Appendix 4: Background Materials Provided to Participants Prior to the Workshop

    Appendix 4: Background Materials Provided to Participants Prior to the Workshop

    Appendix 4: Background materials provided to participants prior to the workshop. Coral reef fin fish spawning closures f. Camouflage grouper (Epinephelus polyphekadion) Risk assessment workshop g. Flowery cod (Epinephelus fuscoguttatus) h. Greasy rockcod (Epinephelus tauvina) 12 – 13 May 2009 i. Spanish flag (stripey;Lutjanus carponotatus) 9am – 5pm Russell 1 & 2 j. Tuskfish Choerodon( spp.) Berkley’s On Ann Closures targeting coral trout afford some protection Rendezvous Hotel Brisbane to other coral reef fin fish species, although the magnitude of this effect is speculative. The imperative 255 Ann Street, Brisbane to explicitly consider other species rests on judgments concerning • the importance of each species to each sector, • the importance of each sector, and • the capacity of existing controls other than spawning closures to provide adequate protection. These judgments are a central theme of the workshop. Background An initial task for the workshop is identification of candidate alternatives. Any closure regime This workshop will explore candidate alternatives for implemented beyond 2008 needs to provide adequate spawning closures to be applied 2009 – 2013. protection for spawning coral reef fin fish species, The Fisheries (Coral Reef Fin Fish) Management Plan within a constraint that the impost on commercial 2003 introduced three nine-day spawning closures and recreational (including charter) fishing is no for coral reef fin fish on the Great Barrier Reef (GBR). greater than for the period 2004 – 2008. ReefMAC The closures applied to the new moon periods in has recommended a five year package comprising two October, November and December for the years years (2009-2010) of no spawning closures followed 2004-2008.
  • Disease List for Aquaculture Health Certificate

    Disease List for Aquaculture Health Certificate

    Quarantine Standard for Designated Species of Imported/Exported Aquatic Animals [Attached Table] 4. Listed Diseases & Quarantine Standard for Designated Species Listed disease designated species standard Common name Disease Pathogen 1. Epizootic haematopoietic Epizootic Perca fluviatilis Redfin perch necrosis(EHN) haematopoietic Oncorhynchus mykiss Rainbow trout necrosis virus(EHNV) Macquaria australasica Macquarie perch Bidyanus bidyanus Silver perch Gambusia affinis Mosquito fish Galaxias olidus Mountain galaxias Negative Maccullochella peelii Murray cod Salmo salar Atlantic salmon Ameirus melas Black bullhead Esox lucius Pike 2. Spring viraemia of Spring viraemia of Cyprinus carpio Common carp carp, (SVC) carp virus(SVCV) Grass carp, Ctenopharyngodon idella white amur Hypophthalmichthys molitrix Silver carp Hypophthalmichthys nobilis Bighead carp Carassius carassius Crucian carp Carassius auratus Goldfish Tinca tinca Tench Sheatfish, Silurus glanis European catfish, wels Negative Leuciscus idus Orfe Rutilus rutilus Roach Danio rerio Zebrafish Esox lucius Northern pike Poecilia reticulata Guppy Lepomis gibbosus Pumpkinseed Oncorhynchus mykiss Rainbow trout Abramis brama Freshwater bream Notemigonus cysoleucas Golden shiner 3.Viral haemorrhagic Viral haemorrhagic Oncorhynchus spp. Pacific salmon septicaemia(VHS) septicaemia Oncorhynchus mykiss Rainbow trout virus(VHSV) Gadus macrocephalus Pacific cod Aulorhynchus flavidus Tubesnout Cymatogaster aggregata Shiner perch Ammodytes hexapterus Pacific sandlance Merluccius productus Pacific
  • RNA Detection Technology for Applications in Marine Science: Microbes to Fish Robert Michael Ulrich University of South Florida, Bobmiu@Aol.Com

    RNA Detection Technology for Applications in Marine Science: Microbes to Fish Robert Michael Ulrich University of South Florida, [email protected]

    University of South Florida Scholar Commons Graduate Theses and Dissertations Graduate School 6-25-2014 RNA Detection Technology for Applications in Marine Science: Microbes to Fish Robert Michael Ulrich University of South Florida, [email protected] Follow this and additional works at: https://scholarcommons.usf.edu/etd Part of the Biology Commons, and the Molecular Biology Commons Scholar Commons Citation Ulrich, Robert Michael, "RNA Detection Technology for Applications in Marine Science: Microbes to Fish" (2014). Graduate Theses and Dissertations. https://scholarcommons.usf.edu/etd/5321 This Dissertation is brought to you for free and open access by the Graduate School at Scholar Commons. It has been accepted for inclusion in Graduate Theses and Dissertations by an authorized administrator of Scholar Commons. For more information, please contact [email protected]. RNA Detection Technology for Applications in Marine Science: Microbes to Fish by Robert M. Ulrich A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy College of Marine Science University of South Florida Major Professor: John H. Paul, Ph.D. Valerie J. Harwood, Ph.D. Mya Breitbart, Ph.D. Christopher D. Stallings, Ph.D. David E. John, Ph.D. Date of Approval June 25, 2014 Keywords: NASBA, grouper, Karenia mikimotoi, Enterococcus Copyright © 2014, Robert M. Ulrich DEDICATION This dissertation is dedicated to my fiancée, Dr. Shannon McQuaig for inspiring my return to graduate school and her continued support over the last four years. On no other porch in our little town have there been more impactful scientific discussions, nor more words of encouragement. ACKNOWLEDGMENTS I gratefully acknowledge the many people who have encouraged and advised me throughout my graduate studies.
  • Download Book (PDF)

    Download Book (PDF)

    e · ~ e t · aI ' A Field Guide to Grouper and Snapper Fishes of Andaman and Nicobar Islands (Family: SERRANIDAE, Subfamily: EPINEPHELINAE and Family: LUTJANIDAE) P. T. RAJAN Andaman & Nicobar Regional Station Zoological Survey of India Haddo, Port Blair - 744102 Edited by the Director, Zoological Survey of India, Kolkata Zoological Survey of India Kolkata CITATION Rajan, P. T. 2001. Afield guide to Grouper and Snapper Fishes of Andaman and Nicobar Islands. (Published - Director, Z.5.1.) Published : December, 2001 ISBN 81-85874-40-9 Front cover: Roving Coral Grouper (Plectropomus pessuliferus) Back cover : A School of Blue banded Snapper (Lutjanus lcasmira) © Government of India, 2001 ALL RIGHTS RESERVED • No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording or otherwise without the prior permission of the publisher. • This book is sold subject to the condition that it shall not, by way of trade, be lent, re-sold, hired out or otherwise disposed of without the publisher'S consent, in any form of binding or cover other than that in which it is published. • The correct price of this publication is the price printed on this page. Any revised price indicated by a rubber stamp or by a sticker or by any other means is incorrect and should be unacceptable. PRICE Indian Rs. 400.00 Foreign $ 25; £ 20 Published at the Publication Division by the Director, Zoological Survey of India, 234/4, AJe Bose Road, 2nd MSO Building, (13th Floor), Nizam Palace, Calcutta-700 020 after laser typesetting by Computech Graphics, Calcutta 700019 and printed at Power Printers, New Delhi - 110002.
  • Diet Composition of Juvenile Black Grouper (Mycteroperca Bonaci) from Coastal Nursery Areas of the Yucatán Peninsula, Mexico

    Diet Composition of Juvenile Black Grouper (Mycteroperca Bonaci) from Coastal Nursery Areas of the Yucatán Peninsula, Mexico

    BULLETIN OF MARINE SCIENCE, 77(3): 441–452, 2005 NOTE DIET COMPOSITION OF JUVENILE BLACK GROUPER (MYCTEROPERCA BONACI) FROM COASTAL NURSERY AREAS OF THE YUCATÁN PENINSULA, MEXICO Thierry Brulé, Enrique Puerto-Novelo, Esperanza Pérez-Díaz, and Ximena Renán-Galindo Groupers (Epinephelinae, Epinephelini) are top-level predators that influence the trophic web of coral reef ecosystems (Parrish, 1987; Heemstra and Randall, 1993; Sluka et al., 2001). They are demersal mesocarnivores and stalk and ambush preda- tors that sit and wait for larger moving prey such as fish and mobile invertebrates (Cailliet et al., 1986). Groupers contribute to the ecological balance of complex tropi- cal hard-bottom communities (Sluka et al., 1994), and thus large changes in their populations may significantly alter other community components (Parrish, 1987). The black grouper (Mycteroperca bonaci Poey, 1860) is an important commercial and recreational fin fish resource in the western Atlantic region (Bullock and Smith, 1991; Heemstra and Randall, 1993). The southern Gulf of Mexico grouper fishery is currently considered to be deteriorated and M. bonaci, along with red grouper (Epinephelus morio Valenciennes, 1828) and gag (Mycteroperca microlepis Goode and Bean, 1880), is one of the most heavily exploited fish species in this region (Co- lás-Marrufo et al., 1998; SEMARNAP, 2000). Currently, M. bonaci is considered a threatened species (Morris et al., 2000; IUCN, 2003) and has been classified as vul- nerable in U.S. waters because male biomass in the Atlantic dropped from 20% in 1982 to 6% in 1995 (Musick et al., 2000). The black grouper is usually found on irregular bottoms such as coral reefs, drop- off walls, and rocky ledges, at depths from 10 to 100 m (Roe, 1977; Manooch and Mason, 1987; Bullock and Smith, 1991; Heemstra and Randall, 1993).
  • Type Species, Perca Rogaa Forsskål, 1775, by Original Designation and Monotypy; Proposed As a Subgenus

    Type Species, Perca Rogaa Forsskål, 1775, by Original Designation and Monotypy; Proposed As a Subgenus

    click for previous page 16 FAO Species Catalogue Vol. 16 2.4 Information by genus and species Aethaloperca Fowler, 1904 SERRAN Aethal Aethafoperca Fowler, 1904:522; type species, Perca rogaa Forsskål, 1775, by original designation and monotypy; proposed as a subgenus. Synonyms: None. Species: A single species widely distributed in the Red Sea and Indo-West Pacific region. Remarks: The genus Aethaloperca is closely related to Cephalopholis and Gracila which also have IX dorsal-fin spines and several trisegmental pterygiophores in the dorsal and anal fin. Smith-Vaniz et al. (1988) discussed the relationships of these genera, and we agree with their decision to recognize Aethaloperca as a valid genus. It differs from Cephalopholis and Gracila in the configuration of the pectoral and median fins and in some cranial features (the anteriorly converging parietal crests and the well-developed median crest on the frontals that extends to the rear edge of the ethmoidal depression). Aethaloperca also differs from Gracila in the shape of the maxilla and in having a larger head and deeper body. Aethaloperca rogaa (Forsskål, 1775) Fig. 35; PI. IA SERRAN Aethal 1 Perca rogaa Forsskål, 1775:38 (type locality: Red Sea, Jeddah, Saudi Arabia). Synonyms: Perca lunaris Forsskål; 1775:39 (type locality: Al Hudaydah [Yemen] and Jeddah). Cephalo- pholis rogaa . FAO Names: En - Redmouth grouper; Fr - Vielle roga; Sp - Cherna roga. Fig. 35 Aethaloperca rogaa (4.50 mm total length) Diagnosis: Body deep and compressed, the depth greater than the head length and contained 2.1 to 2.4 times in standard length, the body width contained 2.3 to 2.8 times in the depth.
  • V a Tion & Management of Reef Fish Sp a Wning Aggrega Tions

    V a Tion & Management of Reef Fish Sp a Wning Aggrega Tions

    handbook CONSERVATION & MANAGEMENT OF REEF FISH SPAWNING AGGREGATIONS A Handbook for the Conservation & Management of Reef Fish Spawning Aggregations © Seapics.com Without the Land and the Sea, and their Bounties, the People and their Traditional Ways would be Poor and without Cultural Identity Fijian Proverb Why a Handbook? 1 What are Spawning Aggregations? 2 How to Identify Spawning Aggregations 2 Species that Aggregate to Spawn 2 Contents Places Where Aggregations Form 9 Concern for Spawning Aggregations 10 Importance for Fish and Fishermen 10 Trends in Exploited Aggregations 12 Managing & Conserving Spawning Aggregations 13 Research and Monitoring 13 Management Options 15 What is SCRFA? 16 How can SCRFA Help? 16 SCRFA Work to Date 17 Useful References 18 SCRFA Board of Directors 20 Since 2000, scientists, fishery managers, conservationists and politicians have become increasingly aware, not only that many commercially important coral reef fish species aggregate to spawn (reproduce) but also that these important reproductive gatherings are particularly susceptible to fishing. In extreme cases, when fishing pressure is high, aggregations can dwindle and even cease to form, sometimes within just a few years. Whether or not they will recover and what the long-term effects on the fish population(s) might be of such declines are not yet known. We do know, however, that healthy aggregations tend to be associated with healthy fisheries. It is, therefore, important to understand and better protect this critical part of the life cycle of aggregating species to ensure that they continue to yield food and support livelihoods. Why a Handbook? As fishing technology improved in the second half of the twentieth century, engines came to replace sails and oars, the cash economy developed rapidly, and human populations and demand for seafood grew, the pressures on reef fishes for food, and especially for money, increased enormously.
  • Academic Paper on “Restricting the Size of Groupers (Serranidae

    Academic Paper on “Restricting the Size of Groupers (Serranidae

    ACADEMIC PAPER ON “RESTRICTING THE SIZE OF GROUPERS (SERRANIDAE) EXPORTED FROM INDONESIA IN THE LIVE REEF FOOD FISH TRADE” Coastal and Marine Resources Management in the Coral Triangle-Southeast Asia (TA 7813-REG) Tehcnical Report ACADEMIC PAPER ON RESTRICTING THE SIZE OFLIVE GROUPERS FOR EXPORT ACADEMIC PAPER ON “RESTRICTING THE SIZE OF GROUPERS (SERRANIDAE) EXPORTED FROM INDONESIA IN THE LIVE REEF FOOD FISH TRADE” FINAL VERSION COASTAL AND MARINE RESOURCES MANAGEMENT IN THE CORAL TRIANGLE: SOUTHEAST ASIA, INDONESIA, MALAYSIA, PHILIPPINES (TA 7813-REG) ACADEMIC PAPER ON RESTRICTING THE SIZE OFLIVE GROUPERS FOR EXPORT Page i FOREWORD Indonesia is the largest exporter of live groupers for the live reef fish food trade. This fisheries sub-sector plays an important role in the livelihoods of fishing communities, especially those living on small islands. As a member of the Coral Triangle Initiative (CTI), in partnership with the Asian Development Bank (ADB) under RETA [7813], Indonesia (represented by a team from Hasanuddin University) has compiled this academic paper as a contribution towards sustainable management of live reef fish resources in Indonesia. Challenges faced in managing the live grouper fishery and trade in Indonesia include the ongoing activities and practices which damage grouper habitat; the lack of protection for grouper spawning sites; overfishing of groupers which have not yet reached sexual maturity/not reproduced; and the prevalence of illegal and unreported fishing for live groupers. These factors have resulted in declining wild grouper stocks. The Aquaculture sector is, at least as yet, unable to replace or enable a balanced wild caught fishery, and thus there is still a heavy reliance on wild-caught groupers.
  • Epinephelus Coioides) from Northern Oman

    Epinephelus Coioides) from Northern Oman

    490 NOAA First U.S. Commissioner National Marine Fishery Bulletin established 1881 of Fisheries and founder Fisheries Service of Fishery Bulletin Abstract—Age, growth, and monthly reproductive characteristics were Demographic profile of an overexploited determined for the orange-spotted serranid, the orange-spotted grouper grouper (Epinephelus coioides) from northern Oman. This species is char- (Epinephelus coioides), from northern Oman acterized by a prevalence of females (1–11 years old), and males make up 1,2 6.5% of the total sample. Growth pa- Jennifer L. McIlwain rameters indicate a typical pattern Aisha Ambu-ali1 for groupers with a low growth co- Nasr Al Jardani1 efficient (K=0.135). The trajectory of 3 the von Bertalanffy growth function Andrew. R. Halford was almost linear with no evidence Hamed S. Al-Oufi4 of asymptotic growth. Estimates of David A. Feary (contact author)5 mortality revealed a low natural mortality of 0.14/year but a high Email address for contact author: [email protected] fishing mortality of 0.59/year. More alarming was the high rate of exploi- 1 Department of Marine Science and Fisheries 4 tation (0.81/year), considered unsus- Ministry of Agriculture and Fisheries College of Agricultural and Marine Sciences tainable for a slow-growing grouper. P.O. Box 1700, Muscat 111 Sultan Qaboos University The population off southern Oman Sultanate of Oman P.O. Box 34, Al-Khod 123 is diandric protogynous, and sex 5 School of Life Sciences Sultanate of Oman change takes place between 449 and University of Nottingham 748 mm in total length (TL) or over 2 Department of Environment and Agriculture University Park a period of 4–8 years.
  • FAU Institutional Repository

    FAU Institutional Repository

    FAU Institutional Repository http://purl.fcla.edu/fau/fauir This paper was submitted by the faculty of FAU’s Harbor Branch Oceanographic Institute. Notice: ©1994 John Wiley & Sons, Inc. This manuscript is an author version with the final publication available at http://www.wiley.com/WileyCDA/ and may be cited as: Tucker, J. W., Jr. (1994). Spawning by captive serranid fishes: a review. Journal of the World Aquaculture Society, 25(3), 345‐ 359. doi:10.1111/j.1749‐7345.1994.tb00218.x JOURNAL OF THE Vol. 25, No.3 WORLD AQUACULTURE SOCIETY September, 1994 Spawning by Captive Serranid Fishes: A Review JOHN W. TUCKER, JR. Harbor Branch Oceanographic Institution. 5600 North U.S. Highway 1. Fort Pierce. Florida 34946 USA Abstract The current available information on spawning by serranid fishes in captivity is reviewed. Much work has been done on members of thefamily Serranidae becauseof their value as food or ornamental fish. At least 31 species have been induced to ovulate with honnones, and at least 23 species have spawned voluntarily (without chemical treatment) in captivity. Typically, a serranid female with fully-yolked oocytes will ovulate within 24-72 h (usually 36-50 h) after the first of 1-3 injectious of 500-1,000 IU human chorionic gonadotropin/kg body weight. Similar results have been obtained for several species given 1-3 injections of 10-50 Ilg luteinizing hormone-releasing hormone analogi kg body weight. Voluntary spawning has occurred mostly with well-fed uncrowded fish during the natural spawning season under conditions of ambient temperature and partial or total natural light.
  • 449. Catfish in Nigeria.Docx

    449. Catfish in Nigeria.Docx

    Invited paper presented at the 6th African Conference of Agricultural Economists, September 23-26, 2019, Abuja, Nigeria Copyright 2019 by [authors]. All rights reserved. Readers may make verbatim copies of this document for non-commercial purposes by any means, provided that this copyright notice appears on all such copies. Smoking kiln technology for catfish processing: an assessment of its acceptability and willingness to pay Omotesho O. Aa., Adenuga A. Hb., Nurudeen A. Sa., . and Olaghere I. La aDepartment of Agricultural Economics and Farm Management, University of Ilorin, Ilorin, Nigeria bAgri-Food and Biosciences Institute (AFBI), Newforge Lane, Belfast, United Kingdom Corresponding Author: [email protected] Abstract Smoking is the most affordable and widely used fish preservation technique in Nigeria and in a host of other African countries. However, the traditional fish smoking technique is not only prone to health risk, but its efficacy is also often constrained by lack of control over temperature and smoke density. In a bid to overcome these challenges, the Nigerian Stored Products Research Institute (NSPRI), Nigeria recently developed a smoking kiln technology. The focus of this research is to compare the sensory parameters and the overall acceptability of smoked catfish using the NSPRI smoking kiln technology and the traditionally smoked catfish. Specifically, the cost and returns associated with the use of the NSPRI smoking kiln technology for catfish processing is estimated. The willingness to pay as well as factors influencing willingness to pay for the NSPRI smoking kiln technology were also analysed. Descriptive statistics, analysis of variance (ANOVA), Budgeting technique and Logistic regression analysis were the main analytical tools employed in the study.