Fish, Crustaceans, Molluscs, Etc Capture Production by Species
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LEVELS in INDIAN MACKEREL Rastrelliger Kanagurta (SCOMBRIDAE) from KARACHI FISH HARBOUR and ITS RISK ASSESSMENT Quratulan Ahmed1,*, Levent Bat2
9(3): 012-016 (2015) Journal of FisheriesSciences.com E-ISSN 1307-234X © 2015 www.fisheriessciences.com ORIGINAL ARTICLE Research Article MERCURY (Hg) LEVELS IN INDIAN MACKEREL Rastrelliger kanagurta (SCOMBRIDAE) FROM KARACHI FISH HARBOUR AND ITS RISK ASSESSMENT Quratulan Ahmed1,*, Levent Bat2 1The Marine Reference Collection and Resources Centre, University of Karachi, Karachi, 75270 Pakistan 2University of Sinop, Fisheries Faculty, Department of Hydrobiology, TR57000 Sinop, Turkey Received: 03.04.2015 / Accepted: 24.04.2015 / Published online: 28.04.2015 Abstract: The present study was conducted to determine Hg levels in edible tissues of the Indian mackerel Rastrelliger kanagurta collected at Karachi Harbour of Pakistan between March 2013 and February 2014. Hg levels ranged from 0.01 to 0.09 with mean ± SD 0.042 ± 0.023 mg/kg dry wt. The Hg level in R. kanagurta is relatively low when compared to those studied in other parts of the world and is able to meet the legal standards by EU Commission Regulation and other international food standards. The findings obtained were also compared with established allowable weekly intake values. It is concluded that the Hg levels in the Indian mackerel from Karachi coasts did not exceed the permission limits (0.5 mg/kg). The results show that the Indian mackerel appears to be useful bio-indicator due to their accumulation of Hg, however, continued sampling is required for further researches. Keywords: Mercury, Rastrelliger kanagurta, Bio-indicator, Karachi fish harbour, Pakistan *Correspondence to: Quratulan Ahmed, The Marine Reference Collection and Resources Centre, University of Karachi, Karachi, 75270 Pakistan E-mail: [email protected] Tel: +92 (345) 2983586 12 Journal of FisheriesSciences.com Ahmed Q and Bat L 9(3): 012-016 (2015) Journal abbreviation: J FisheriesSciences.com Introduction exposure route possibly allowing metal biomagnification up trophic levels in the Indian mackerel R. -
May-August 2008
~ UH-NOAA~ Volume 13, Number 2 May–August 2008 What If You Don’t Speak “CPUE-ese”? J. John Kaneko and Paul K. Bartram Introduction Seafood consumers are largely unaware of the environmental conse- quences they implicitly endorse when buying fish from different sources. To more effectively support responsible fisheries, consumers need to be able to easily differentiate seafood harvested in sustainable ways using more “envi- ronmentally friendly” methods from seafood from less sustainable origins. This requires easy access by con- sumers to easy-to-understand infor- mation comparing the “environmen- tal baggage” of competing suppliers of similar seafood products. Existing scientific measures do define such distinctions—but they are often too complex or technical to be easily understood or used by the aver- age seafood consumer. New communi- cation tools for readily conveying such information to non-scientist seafood consumers are needed. Figure 1. Computed Hawai‘i longline tuna fisheries bycatch-to-catch (B/C) ratios were reduced after increased (to greater than 20 percent of the annual fishing trips) observer coverage documented a lower rate of sea- turtle interaction than had the lower previous observer coverage (of less than 5 percent of the annual fishing Successful Efforts at Reducing trips). Sea-turtle interactions were significantly reduced in the Hawai‘i longline swordfish fishery as a result Sea-Turtle “Bycatch” of revised hook-and-bait requirements required by federal regulations that took effect in mid-2004. The Hawai‘i longline fishery, work- The area of the circles is proportional to the number of sea-turtle takes per 418,000 lb of target fish (tuna ing with fisheries scientists and fisheries or swordfish) caught. -
Jubilee Field Draft EIA Chapter 4 6 Aug 09.Pdf
4 ENVIRONMENTAL AND SOCIO-ECONOMIC BASELINE 4.1 INTRODUCTION This chapter provides a description of the current environmental and socio- economic situation against which the potential impacts of the Jubilee Field Phase 1 development can be assessed and future changes monitored. The chapter presents an overview of the aspects of the environment relating to the surrounding area in which the Jubilee Field Phase 1 development will take place and which may be directly or indirectly affected by the proposed project. This includes the Jubilee Unit Area, the Ghana marine environment at a wider scale and the six districts of the Western Region bordering the marine environment. The Jubilee Unit Area and its regional setting are shown in Figure 4.1. The project area is approximately 132 km west-southwest of the city of Takoradi, 60 km from the nearest shoreline of Ghana, and 75 km from the nearest shoreline of Côte d’Ivoire. Figure 4.1 Project Location and Regional Setting ENVIRONMENTAL RESOURCES MANAGEMENT TULLOW GHANA LIMITED 4-1 The baseline description draws on a number of primary and secondary data sources. Primary data sources include recent hydrographic studies undertaken as part of the exploration well drilling programme in the Jubilee field area, as well as an Environmental Baseline Survey (EBS) which was commissioned by Tullow and undertaken by TDI Brooks (2008). An electronic copy of the EBS is attached to this EIS. It is noted that information on the offshore distribution and ecology of marine mammals, turtles and offshore pelagic fish is more limited due to limited historic research in offshore areas. -
Studies on Some Japanese Fishes of The, Family Gempylidae
Studies on Some Japanese Fishes of the, Family Gempylidae KIYOMATSU M ATSUBARA and TAMOTSU IWAI l THOUGH TH E FISHES of the family Gempyli The few species comprising this family live dae have long been of interest to ichth yolo in the high seas and are widely distributed in gists and though considerable literature warm regions throughout the world . concerning this family has accumulated; the The measurements of various parts of the group still is far from being satisfactorily body were made in the same way as those understood. made by the senior author in his study on the Since the publication of " Gempylidae of scorpaenoid fishes ofJapan (Matsubara, 1943: Japan" by Dr. Toshij i Kamohara in 1938, 6-7). We have carefully observed the gill some additional facts have come to ligh t, and rakers stained by alizarin red and cleared by several discrepancies have been found to exist potassium hydroxide. between his descriptions and our specimens. Acknowledgments: .We wish to express our The present paper, supplementing Karno sincere gratitude to Mr. Vernon E. Brock, hara's, treats seven species of the family, re Dr. Carl L. Hubbs, Mr. T. Abe, Dr. T. Karno ferred to the genera N eoepinnul«, Bpinnula, hara, and Mr. M. Nakamura, all of whom Mimasea, Gempylus, Rexea, Nealotus, and helped us in various ways. We are also greatly Prometbicbtbys. The specimens thus far ex indebted to Messrs. G . Abe and S. Noda for amined were all taken by deep-sea trawlers assistance in 'obtaining material. Expenses for off the Pacific coast of J apan at a depth of investigations of deep-sea fishes were de about 100 fathoms, and all are depo sited in frayed from 1943 to 1945 by a research fun d the Department of Fisheries, Facult y of Agri- . -
Aberystwyth University Spermatophore Dimorphism in the Chokka Squid Loligo Reynaudii Associated with Alternative Mating Tactics
Aberystwyth University Spermatophore dimorphism in the chokka squid Loligo reynaudii associated with alternative mating tactics Iwata, Yoko; Sauer, Warwick H. H.; Sato, Noriyosi; Shaw, Paul Published in: Journal of Molluscan Studies DOI: 10.1093/mollus/eyy002 Publication date: 2018 Citation for published version (APA): Iwata, Y., Sauer, W. H. H., Sato, N., & Shaw, P. (2018). Spermatophore dimorphism in the chokka squid Loligo reynaudii associated with alternative mating tactics. Journal of Molluscan Studies, 84(2), 152-162. https://doi.org/10.1093/mollus/eyy002 General rights Copyright and moral rights for the publications made accessible in the Aberystwyth Research Portal (the Institutional Repository) are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. • Users may download and print one copy of any publication from the Aberystwyth Research Portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the Aberystwyth Research Portal Take down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. tel: +44 1970 62 2400 email: [email protected] Download date: 25. Sep. 2021 Spermatophore dimorphism in the chokka squid Loligo reynaudii associated with alternative mating tactics Yoko Iwata1*, Warwick H. H. Sauer2, Noriyosi Sato3, Paul W. Shaw4 1 Atmosphere and Ocean Research Institute, University of Tokyo, Chiba, Japan. -
Simulations of Fishing Effects on the Southern Benguela Fish Community Using an Individual-Based Model: Learning from a Comparison with Ecosim
Ecosystem Approaches to Fisheries in the Southern Benguela Afr. J. mar. Sci. 26: 95–114 2004 95 SIMULATIONS OF FISHING EFFECTS ON THE SOUTHERN BENGUELA FISH COMMUNITY USING AN INDIVIDUAL-BASED MODEL: LEARNING FROM A COMPARISON WITH ECOSIM Y-J. SHIN*, L. J. SHANNON† and P. M. CURY* By applying an individual-based model (OSMOSE) to the southern Benguela ecosystem, a multispecies analysis is proposed, complementary to that provided by the application of ECOPATH/ECOSIM models. To reconstruct marine foodwebs, OSMOSE is based on the hypothesis that predation is a size-structured process. In all, 12 fish species, chosen for their importance in terms of biomass and catches, are explicitly modelled. Growth, repro- duction and mortality parameters are required to model their dynamics and trophic interactions. Maps of mean spatial distribution of the species are compiled from published literature. Taking into account the spatial component is necessary because spatial co-occurrence determines potential interactions between predatory fish and prey fish of suitable size. To explore ecosystem effects of fishing, different fishing scenarios, previously examined using ECOSIM, are simulated using the OSMOSE model. They explore the effects of targeting fish species in the southern Benguela considered to be predators (Cape hake Merluccius capensis and M. paradoxus) or prey (anchovy Engraulis encrasicolus, sardine Sardinops sagax, round herring Etrumeus whiteheadi). Simulation results are compared and are generally consistent with those obtained using an ECOSIM model. This cross-validation appears to be a promising means of evaluating the robustness of model outputs, when separate validation of marine ecosystem models are still difficult to perform. -
Hairtail and Frostfish (Trichiuridae) Exploitation Status Undefined
I & I NSW WILD FISHERIES RESEARCH PROGRAM Hairtail and Frostfish (Trichiuridae) EXPLOITATION STATUS UNDEFINED No local biological information available for either species in this group, but growth and maturity have been studied for Trichiurus lepturus from the East China Sea, where it supports a major fishery. SCIENTIFIC NAME STANDARD NAME COMMENT Trichiurus lepturus largehead hairtail Lepidopus caudatus frostfish Trichiurus lepturus Image © Bernard Yau Background The hairtail is commonly around 100 cm in length and about 2 kg in weight but reaches a The largehead hairtail (Trichiurus lepturus) maximum length of about 220 cm and weight belongs to the family Trichiuridae which, of 3.5 kg. worldwide, includes nine genera and about 30 species generally referred to as cutlassfishes or Overseas studies have observed that adults scabbardfishes. Off NSW, at least four species feed at the surface during the day, and retreat of trichiurids are found in deepwater, but the to deeper waters at night. In contrast, juveniles most well known member of the family to most and small adults tend to feed at night at the people is the hairtail, found in shallow coastal surface, and aggregate into schools at depths waters and estuaries. during the day. The adult hairtail diet consists mainly of fish with occasional squid and A cosmopolitan species, the largehead hairtail crustaceans, whereas juveniles mainly feed on is subject to significant fisheries off many planktonic crustaceans, euphausiids and small Asian countries, particularly China and Korea. fish. The world catch reportedly now exceeds 1.5 million t annually. In eastern Australia, Reported landings in NSW generally range hairtail occasionally school in coastal bays between 10 and 25 t with catches greatest and estuaries where they may be targeted during March-May. -
© Iccat, 2007
A5 By-catch Species APPENDIX 5: BY-CATCH SPECIES A.5 By-catch species By-catch is the unintentional/incidental capture of non-target species during fishing operations. Different types of fisheries have different types and levels of by-catch, depending on the gear used, the time, area and depth fished, etc. Article IV of the Convention states: "the Commission shall be responsible for the study of the population of tuna and tuna-like fishes (the Scombriformes with the exception of Trichiuridae and Gempylidae and the genus Scomber) and such other species of fishes exploited in tuna fishing in the Convention area as are not under investigation by another international fishery organization". The following is a list of by-catch species recorded as being ever caught by any major tuna fishery in the Atlantic/Mediterranean. Note that the lists are qualitative and are not indicative of quantity or mortality. Thus, the presence of a species in the lists does not imply that it is caught in significant quantities, or that individuals that are caught necessarily die. Skates and rays Scientific names Common name Code LL GILL PS BB HARP TRAP OTHER Dasyatis centroura Roughtail stingray RDC X Dasyatis violacea Pelagic stingray PLS X X X X Manta birostris Manta ray RMB X X X Mobula hypostoma RMH X Mobula lucasana X Mobula mobular Devil ray RMM X X X X X Myliobatis aquila Common eagle ray MYL X X Pteuromylaeus bovinus Bull ray MPO X X Raja fullonica Shagreen ray RJF X Raja straeleni Spotted skate RFL X Rhinoptera spp Cownose ray X Torpedo nobiliana Torpedo -
Monthly Highlights
Monthly Highlights No. 2 / 2021 In this issue As of 2021, the Monthly Highlights include Bulgaria among surveyed countries. According to data collected by EUMOFA from 13 EU Member States, in November 2020 striped venus and whelk together accounted for 12% of the total Contents first-sales value of the “Bivalves and other molluscs and aquatic invertebrates” commodity group. First sales in Europe Striped venus (Italy, Spain) and whelk From 2018 to 2020, the price of live, fresh, or chilled (Belgium, France, Netherlands) mussels imported in the EU from Norway fluctuated from 2,04 to 7,09 EUR/kg. In 2020, both price and Extra-EU imports volume exhibited a downward trend. Weekly average EU import prices of selected products from Over the last four years, German consumers spent selected countries of origin the most for a kilogram of fresh cod, (18,00 EUR/kg on average) compared to France Consumption Fresh cod in Germany, France, and the (16,80 EUR/kg) and the Netherlands (16,30 EUR/kg). Netherlands In 2019, the EU imports of fisheries and aquaculture products from South Africa accounted for over EUR Case studies 295 million and 80.597 tonnes. Hake, squid, and Fisheries and aquaculture in South Africa fishmeal constitute the bulk share of EU imports. Horse mackerel in the EU The largest market for horse mackerel exported by the EU is Egypt. In 2019, exports to the country Global highlights reached 54.000 tonnes, worth EUR 51 million, accounting for 50% of total export volume Macroeconomic context and 47% of value. Marine fuel, consumer prices, and In January 2021, the EU and Greenland concluded exchange rates negotiations for a new four-year Sustainable Fisheries Partnership Agreement (SFPA), which is the third most important agreement in place for the EU in financial terms. -
Fishes of Terengganu East Coast of Malay Peninsula, Malaysia Ii Iii
i Fishes of Terengganu East coast of Malay Peninsula, Malaysia ii iii Edited by Mizuki Matsunuma, Hiroyuki Motomura, Keiichi Matsuura, Noor Azhar M. Shazili and Mohd Azmi Ambak Photographed by Masatoshi Meguro and Mizuki Matsunuma iv Copy Right © 2011 by the National Museum of Nature and Science, Universiti Malaysia Terengganu and Kagoshima University Museum All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means without prior written permission from the publisher. Copyrights of the specimen photographs are held by the Kagoshima Uni- versity Museum. For bibliographic purposes this book should be cited as follows: Matsunuma, M., H. Motomura, K. Matsuura, N. A. M. Shazili and M. A. Ambak (eds.). 2011 (Nov.). Fishes of Terengganu – east coast of Malay Peninsula, Malaysia. National Museum of Nature and Science, Universiti Malaysia Terengganu and Kagoshima University Museum, ix + 251 pages. ISBN 978-4-87803-036-9 Corresponding editor: Hiroyuki Motomura (e-mail: [email protected]) v Preface Tropical seas in Southeast Asian countries are well known for their rich fish diversity found in various environments such as beautiful coral reefs, mud flats, sandy beaches, mangroves, and estuaries around river mouths. The South China Sea is a major water body containing a large and diverse fish fauna. However, many areas of the South China Sea, particularly in Malaysia and Vietnam, have been poorly studied in terms of fish taxonomy and diversity. Local fish scientists and students have frequently faced difficulty when try- ing to identify fishes in their home countries. During the International Training Program of the Japan Society for Promotion of Science (ITP of JSPS), two graduate students of Kagoshima University, Mr. -
Blue Jack Mackerel (Trachurus Picturatus) in Subdivision 10.A.2 (Azores Grounds)
ICES Advice on fishing opportunities, catch, and effort Bay of Biscay and the Iberian Coast ecoregion Published 18 December 2020 Blue jack mackerel (Trachurus picturatus) in Subdivision 10.a.2 (Azores grounds) ICES advice on fishing opportunities ICES advises that when the precautionary approach is applied, catches should be no more than 878 tonnes in each of the years 2021 and 2022. Note: This advice sheet is abbreviated due to the COVID-19 disruption. The previous advice issued for 2019 and 2020 is attached as Annex 1. Stock development over time Figure 1 Blue jack mackerel in Subdivision 10.a.2. Landings and other catches. Landings include purse-seine catches for human consumption – PS (HC) – purse-seine catches for bait – PS (Bait) – and include unsold purse-seine landings withdrawn at the port as well as longline and handline catches (LL and HL). Other catches include longline bait, tuna live bait, and recreational catches (incomplete in 2017–2019). Stock and exploitation status Table 1 Blue jack mackerel in Subdivision 10.a.2. State of the stock and fishery relative to reference points. ICES Advice 2020 – jaa.27..10a2 – https://doi.org/10.17895/ices.advice.7650 ICES advice, as adopted by its advisory committee (ACOM), is developed upon request by ICES clients (European Union, NASCO, NEAFC, Iceland, and Norway). 1 ICES Advice on fishing opportunities, catch, and effort Published 18 December 2020 jaa.27.10a2 Catch scenarios ICES framework for category 5 stocks was applied (ICES, 2012). For stocks without information on abundance or exploitation, ICES considers that a precautionary reduction of catches should be implemented unless there is ancillary information clearly indicating that the current level of exploitation is appropriate for the stock. -
TNP SOK 2011 Internet
GARDEN ROUTE NATIONAL PARK : THE TSITSIKAMMA SANP ARKS SECTION STATE OF KNOWLEDGE Contributors: N. Hanekom 1, R.M. Randall 1, D. Bower, A. Riley 2 and N. Kruger 1 1 SANParks Scientific Services, Garden Route (Rondevlei Office), PO Box 176, Sedgefield, 6573 2 Knysna National Lakes Area, P.O. Box 314, Knysna, 6570 Most recent update: 10 May 2012 Disclaimer This report has been produced by SANParks to summarise information available on a specific conservation area. Production of the report, in either hard copy or electronic format, does not signify that: the referenced information necessarily reflect the views and policies of SANParks; the referenced information is either correct or accurate; SANParks retains copies of the referenced documents; SANParks will provide second parties with copies of the referenced documents. This standpoint has the premise that (i) reproduction of copywrited material is illegal, (ii) copying of unpublished reports and data produced by an external scientist without the author’s permission is unethical, and (iii) dissemination of unreviewed data or draft documentation is potentially misleading and hence illogical. This report should be cited as: Hanekom N., Randall R.M., Bower, D., Riley, A. & Kruger, N. 2012. Garden Route National Park: The Tsitsikamma Section – State of Knowledge. South African National Parks. TABLE OF CONTENTS 1. INTRODUCTION ...............................................................................................................2 2. ACCOUNT OF AREA........................................................................................................2