Precautionary Catch Limits on Forage Fish Would Rarely Advance
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Fisheries Centre
Fisheries Centre The University of British Columbia Working Paper Series Working Paper #2015 - 80 Reconstruction of Syria’s fisheries catches from 1950-2010: Signs of overexploitation Aylin Ulman, Adib Saad, Kyrstn Zylich, Daniel Pauly and Dirk Zeller Year: 2015 Email: [email protected] This working paper is made available by the Fisheries Centre, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada. Reconstruction of Syria’s fisheries catches from 1950-2010: Signs of overexploitation Aylin Ulmana, Adib Saadb, Kyrstn Zylicha, Daniel Paulya, Dirk Zellera a Sea Around Us, Fisheries Centre, University of British Columbia, 2202 Main Mall, Vancouver, BC, V6T 1Z4, Canada b President of Syrian National Committee for Oceanography, Tishreen University, Faculty of Agriculture, P.O. BOX; 1408, Lattakia, Syria [email protected] (corresponding author); [email protected]; [email protected]; [email protected]; [email protected] ABSTRACT Syria’s total marine fisheries catches were estimated for the 1950-2010 time period using a reconstruction approach which accounted for all fisheries removals, including unreported commercial landings, discards, and recreational and subsistence catches. All unreported estimates were added to the official data, as reported by the Syrian Arab Republic to the United Nation’s Food and Agriculture Organization (FAO). Total reconstructed catch for 1950-2010 was around 170,000 t, which is 78% more than the amount reported by Syria to the FAO as their national catch. The unreported components added over 74,000 t of unreported catches, of which 38,600 t were artisanal landings, 16,000 t industrial landings, over 4,000 t recreational catches, 3,000 t subsistence catches and around 12,000 t were discards. -
A Comparison of the Seasonal Abundance of Hake (Merluccius Merluccius) and Its Main Prey Species Off the Portuguese Coast
THIS POSTER IS NOT TO BE CITED WITHOUT PRIOR REFERENCE TO THE AUTHORS ICES C.M. 2000/Q:13 THEME SESSION Q: TROPHIC DYNAMICS OF TOP PREDATORS: FORAGING STRATEGIES AND REQUIREMENTS, AND CONSUMPTION MODELS A comparison of the seasonal abundance of hake (Merluccius merluccius) and its main prey species off the Portuguese coast. L. Hill & M.F. Borges Dept. of Marine Resources (DRM), Instituto de Investigação das Pescas e do Mar (IPIMAR), Avenida de Brasilia, PT-1449-006 Lisboa, Portugal (email: [email protected]; [email protected]). Abstract Hake is an important predator in the Atlantic off the Portuguese coast. Its diet has been studied between 1997 and 1999 and the main fish species it preys on have been identified. This poster compares the seasonal abundance of hake and the availability of its main prey species in three physically distinct regions of the continental Portuguese shelf and slope using trawl fishery catches. The main prey species, which vary in order of importance according to season, are: blue whiting (Micromesistius poutassou), mackerel (Scomber scombrus), chub mackerel (Scomber japonicus), anchovy (Engraulis encrasicholus) and sardine (Sardina pilchardus). It is shown that there is some correspondence between the seasonal and spatial variation in abundance of prey species in the ecosystem and the proportion of these prey in the diet. This confirms that hake is an opportunistic feeder. Hake and these species are all commercially important, so these interactions are important for an ecosystem approach to their management. Introduction This poster compares the seasonal abundance of hake and its main commercial prey species in three physically distinct regions (north – above 40º00’ latitude, centre – between 39º90’ and 37º30’ and south – below 37º20’) of the continental Portuguese shelf and slope. -
Ontogenetic Shifts and Feeding Strategies of 7 Key Species Of
50 National Marine Fisheries Service Fishery Bulletin First U.S. Commissioner established in 1881 of Fisheries and founder NOAA of Fishery Bulletin Abstract—The trophic ecology of 7 key Ontogenetic shifts and feeding strategies of species of Gadiformes, the silvery pout (Gadiculus argenteus), Mediterranean 7 key species of Gadiformes in the western bigeye rockling (Gaidropsarus biscay- ensis), European hake (Merluccius Mediterranean Sea merluccius), blue whiting (Microme- sistius poutassou), Mediterranean ling Encarnación García-Rodríguez (contact author)1 (Molva macrophthalma), greater fork- Miguel Vivas1 beard (Phycis blennoides), and poor cod 1 (Trisopterus minutus), in the western José M. Bellido 1 Mediterranean Sea was explored. A Antonio Esteban total of 3192 fish stomachs were exam- María Ángeles Torres2 ined during 2011–2017 to investigate ontogenetic shifts in diet, trophic inter- Email address for contact author: [email protected] actions (both interspecific and intraspe- cific), and feeding strategies. The results 1 from applying multivariate statistical Centro Oceanográfico de Murcia techniques indicate that all investigated Instituto Español de Oceanografía species, except the Mediterranean big- Calle el Varadero 1 eye rockling and poor cod, underwent San Pedro del Pinatar ontogenetic dietary shifts, increasing 30740 Murcia, Spain their trophic level with size. The studied 2 Centro Oceanográfico de Cádiz species hold different trophic positions, Instituto Español de Oceanografía from opportunistic (e.g., the Mediter- Puerto Pesquero ranean bigeye rockling, with a trophic Muelle de Levante s/n level of 3.51) to highly specialized pisci- 11006 Cádiz, Spain vore behavior (e.g., the Mediterranean ling, with a trophic level of 4.47). These insights reveal 4 different feeding strat- egies among the co- occurring species and size classes in the study area, as well as the degree of dietary overlap. -
Nocturnal Feeding of Pacific Hake and Jack Mackerel Off the Mouth of the Columbia River, 1998-2004: Implications for Juvenile Salmon Predation Robert L
This article was downloaded by: [Oregon State University] On: 16 August 2011, At: 13:01 Publisher: Taylor & Francis Informa Ltd Registered in England and Wales Registered Number: 1072954 Registered office: Mortimer House, 37-41 Mortimer Street, London W1T 3JH, UK Transactions of the American Fisheries Society Publication details, including instructions for authors and subscription information: http://www.tandfonline.com/loi/utaf20 Nocturnal Feeding of Pacific Hake and Jack Mackerel off the Mouth of the Columbia River, 1998-2004: Implications for Juvenile Salmon Predation Robert L. Emmett a & Gregory K. Krutzikowsky b a Northwest Fisheries Science Center, NOAA Fisheries, 2030 South Marine Science Drive, Newport, Oregon, 97365, USA b Cooperative Institute of Marine Resource Studies, Oregon State University, 2030 South Marine Science Drive, Newport, Oregon, 97365, USA Available online: 09 Jan 2011 To cite this article: Robert L. Emmett & Gregory K. Krutzikowsky (2008): Nocturnal Feeding of Pacific Hake and Jack Mackerel off the Mouth of the Columbia River, 1998-2004: Implications for Juvenile Salmon Predation, Transactions of the American Fisheries Society, 137:3, 657-676 To link to this article: http://dx.doi.org/10.1577/T06-058.1 PLEASE SCROLL DOWN FOR ARTICLE Full terms and conditions of use: http://www.tandfonline.com/page/terms-and- conditions This article may be used for research, teaching and private study purposes. Any substantial or systematic reproduction, re-distribution, re-selling, loan, sub-licensing, systematic supply or distribution in any form to anyone is expressly forbidden. The publisher does not give any warranty express or implied or make any representation that the contents will be complete or accurate or up to date. -
Marine Fish Conservation Global Evidence for the Effects of Selected Interventions
Marine Fish Conservation Global evidence for the effects of selected interventions Natasha Taylor, Leo J. Clarke, Khatija Alliji, Chris Barrett, Rosslyn McIntyre, Rebecca0 K. Smith & William J. Sutherland CONSERVATION EVIDENCE SERIES SYNOPSES Marine Fish Conservation Global evidence for the effects of selected interventions Natasha Taylor, Leo J. Clarke, Khatija Alliji, Chris Barrett, Rosslyn McIntyre, Rebecca K. Smith and William J. Sutherland Conservation Evidence Series Synopses 1 Copyright © 2021 William J. Sutherland This work is licensed under a Creative Commons Attribution 4.0 International license (CC BY 4.0). This license allows you to share, copy, distribute and transmit the work; to adapt the work and to make commercial use of the work providing attribution is made to the authors (but not in any way that suggests that they endorse you or your use of the work). Attribution should include the following information: Taylor, N., Clarke, L.J., Alliji, K., Barrett, C., McIntyre, R., Smith, R.K., and Sutherland, W.J. (2021) Marine Fish Conservation: Global Evidence for the Effects of Selected Interventions. Synopses of Conservation Evidence Series. University of Cambridge, Cambridge, UK. Further details about CC BY licenses are available at https://creativecommons.org/licenses/by/4.0/ Cover image: Circling fish in the waters of the Halmahera Sea (Pacific Ocean) off the Raja Ampat Islands, Indonesia, by Leslie Burkhalter. Digital material and resources associated with this synopsis are available at https://www.conservationevidence.com/ -
Published Estimates of Life History Traits for 84 Populations of Teleost
Summary of data on fishing pressure group (G), age at maturity (Tm, years), length at maturity (Lm, cm), length-at-5%-survival (L.05, cm), time-to-5%-survival 3 (T.05, years), slope of the log-log fecundity-length relationship (Fb), fecundity the year of maturity (Fm), and egg volume (Egg, mm ) for the populations listed in the first three columns. Period is the period of field data collection. Species Zone Period G Tm Lm L.05 T.05 Fb Fm Egg Data sources (1) (1) (2) (3) (4) (4) (5) (1) (2) (3) (4) (5) Clupeiformes Engraulis capensis S. Africa 71-74 2 1 9.5 11.8 1.8 3.411 4.856E+04 0.988 118 119 137 118 138 Engraulis encrasicholus B. Biscay 87-92 2 1 11.5 14 1.4 3.997 9.100E+04 1.462 125 30, 188 170, 169 133, 23 145 Medit. S. 84-90 1 1 12.5 13.4 2.3 4.558 9.738E+04 0.668 161 161 160 161, 120 120 Sprattus sprattus Baltic S. 85-91 1 2 12 13.8 6.2 2.84 2.428E+05 1.122 15 19 26 184, 5 146 North S. 73-77 1 2 11.5 14.3 3 4.673 8.848E+03 0.393 8 107 106 33 169 Clupea harengus Baltic S. 75-82 1 3 16 24 4.9 3.206 4.168E+04 0.679 116 191 191 116 169 North S. 60-69 3 3 22 26.9 2.7 4.61 2.040E+04 0.679 52 53, 7 52 39 169 Baltic S. -
Norway Pout, Sandeel and North Sea Sprat
FINAL REPORT Initial assessment of the Norway sandeel, pout and North Sea sprat fishery Norges Fiskarlag Report No.: 2017-008, Rev 3 Date: January 2nd 2018 Certificate code: 251453-2017-AQ-NOR-ASI Report type: Final Report DNV GL – Business Assurance Report title: Initial assessment of the Norway sandeel, pout and North Sea sprat fishery DNV GL Business Assurance Customer: Norges Fiskarlag, Pirsenteret, Norway AS 7462 TRONDHEIM Veritasveien 1 Contact person: Tor Bjørklund Larsen 1322 HØVIK, Norway Date of issue: January 2nd 2018 Tel: +47 67 57 99 00 Project No.: PRJC -557210 -2016 -MSC -NOR http://www.dnvgl.com Organisation unit: ZNONO418 Report No.: 2017-008, Rev 3 Certificate No.: 251453-2017-AQ-NOR-ASI Objective: Assessment of the Norway sandeel, pout and North Sea sprat fishery against MSC Fisheries Standards v2.0. Prepared by: Verified by: Lucia Revenga Sigrun Bekkevold Team Leader and P2 Expert Principle Consultant Hans Lassen P1 Expert Geir Hønneland P3 Expert Stefan Midteide Project Manager Copyright © DNV GL 2014. All rights reserved. This publication or parts thereof may not be copied, reproduced or transmitted in any form, or by any means, whether digitally or otherwise without the prior written consent of DNV GL. DNV GL and the Horizon Graphic are trademarks of DNV GL AS. The content of this publication shall be kept confidential by the customer, unless otherwise agreed in writing. Reference to part of this publication which may lead to misinterpretation is prohibited. DNV GL Distribution: ☒ Unrestricted distribution (internal and external) ☐ Unrestricted distribution within DNV GL ☐ Limited distribution within DNV GL after 3 years ☐ No distribution (confidential) ☐ Secret Rev. -
Plastic and Evolutionary Responses to Climate Change in Fish
Evolutionary Applications Evolutionary Applications ISSN 1752-4571 REVIEWS AND SYNTHESIS Plastic and evolutionary responses to climate change in fish Lisa G. Crozier1 and Jeffrey A. Hutchings2,3 1 Northwest Fisheries Science Center, Seattle, WA, USA 2 Department of Biology, Dalhousie University, Halifax, NS, Canada 3 Department of Biosciences, Centre for Ecological and Evolutionary Synthesis, University of Oslo, Oslo, Norway Keywords Abstract adaptation, climate change, evolutionary theory, fisheries management, life-history The physical and ecological ‘fingerprints’ of anthropogenic climate change over evolution, phenotypic plasticity the past century are now well documented in many environments and taxa. We reviewed the evidence for phenotypic responses to recent climate change in fish. Correspondence Changes in the timing of migration and reproduction, age at maturity, age at Lisa G. Crozier, Northwest Fisheries Science juvenile migration, growth, survival and fecundity were associated primarily with Center, 2725 Montlake Blvd E., Seattle, WA changes in temperature. Although these traits can evolve rapidly, only two studies 98112, USA. Tel.: +1 206 860 3395 attributed phenotypic changes formally to evolutionary mechanisms. The correla- fax: +1 206 860 3267 tion-based methods most frequently employed point largely to ‘fine-grained’ e-mail: [email protected] population responses to environmental variability (i.e. rapid phenotypic changes relative to generation time), consistent with plastic mechanisms. Ultimately, Received: 10 May 2013 -
Feeding Habits of the Common Thresher Shark (Alopias Vulpinus) Sampled from the California-Based Drift Gill Net Fishery, 1998-1 999
PRETI ET AL.: FEEDING HABITS OF COMMON THRESHER SHARK CalCOFl Rep., Vol. 42, 2001 FEEDING HABITS OF THE COMMON THRESHER SHARK (ALOPIAS VULPINUS) SAMPLED FROM THE CALIFORNIA-BASED DRIFT GILL NET FISHERY, 1998-1 999 ANTONELLA PRETI SUSAN E. SMITH AND DARLENE A. RAMON California Department of Fish and Game National Marine Fisheries Service, NOM 8604 La Jolla Shores Dnve Southwest Fisheries Science Center La Jolla, California 92037 P.O. Box 271 sharksharkshark@hotniail coni La Jolla, California 92038 ABSTRACT (Compagno 1984). It is epipelagic, gregarious, and cos- The diet of common thresher shark (Alopius vulpinus) mopolitan, and in the northeastern Pacific seems to be from US. Pacific Coast waters was investigated by means most abundant within 40 miles of shore (Strasburg 1958). of frequency of occurrence, gravimetric and numerical Its known range extends from Clarion Island, Mexico, methods, and calculating the geometric index of im- north to British Columbia; it is common seasonally from portance (GII) of prey taxa taken from stoniachs col- mid-Baja California, Mexico, to Washington state.' It lected by fishery observers from the California-based is the leading commercial shark taken in California, drift gill net fishery. Sampling was done from 16 August where it is highly valued in the fresh fish trade (Holts et 1998 to 24 January 1999, a time when the California al. 1998). It is also sought by recreational anglers for its Current was undergoing rapid change from El Niiio to fighting ability as well as food value, especially in south- La Niiia conhtions. Of the 165 stomachs examined, 107 ern California. -
Appendix 13.2 Marine Ecology and Biodiversity Baseline Conditions
THE LONDON RESORT PRELIMINARY ENVIRONMENTAL INFORMATION REPORT Appendix 13.2 Marine Ecology and Biodiversity Baseline Conditions WATER QUALITY 13.2.1. The principal water quality data sources that have been used to inform this study are: • Environment Agency (EA) WFD classification status and reporting (e.g. EA 2015); and • EA long-term water quality monitoring data for the tidal Thames. Environment Agency WFD Classification Status 13.2.2. The tidal River Thames is divided into three transitional water bodies as part of the Thames River Basin Management Plan (EA 2015) (Thames Upper [ID GB530603911403], Thames Middle [ID GB53060391140] and Thames Lower [ID GB530603911401]. Each of these waterbodies are classified as heavily modified waterbodies (HMWBs). The most recent EA assessment carried out in 2016, confirms that all three of these water bodies are classified as being at Moderate ecological potential (EA 2018). 13.2.3. The Thames Estuary at the London Resort Project Site is located within the Thames Middle Transitional water body, which is a heavily modified water body on account of the following designated uses (Cycle 2 2015-2021): • Coastal protection; • Flood protection; and • Navigation. 13.2.4. The downstream extent of the Thames Middle transitional water body is located approximately 12 km downstream of the Kent Project Site and 8 km downstream of the Essex Project Site near Lower Hope Point. Downstream of this location is the Thames Lower water body which extends to the outer Thames Estuary. 13.2.5. A summary of the current Thames Middle water body WFD status is presented in Table A13.2.1, together with those supporting elements that do not currently meet at least Good status and their associated objectives. -
Profiles of Whiting (Merlangius Merlangus Euxinus Nordman, 1840) Meat and Roe During Fishing Season in Black Sea
─── Food Technology ─── Comparison of fatty acids, lipid quality index and amino acid profiles of whiting (Merlangius merlangus euxinus Nordman, 1840) meat and roe during fishing season in Black Sea Demet Kocatepe, Can Okan Altan, Hülya Turan Sinop University, Sinop, Turkey Abstract Keywords: Introduction. The aim of research is to determine the fatty Whiting acid and amino acid composition of the whiting meat and roe Fish roe caught in different months in Black Sea. Amino acids Materials and methods. The whiting (Merlangius Fatty acids merlangus euxinus Nordman, 1840) caught from the Sinop EPA region of the Middle Black Sea Region. Sampling were carried DHA out twice a month. And the whiting meat and roe were compared in view of its fatty acid (FA) and amino acid (AA) composition during fishing season in Black Sea. Results and discussion. During the six months, the length and weight of whiting used in the study varied between 14.15– 16.60 cm and 24.49–29.68 g, respectively. Minimum length Article history: and weight were determined in March. Maximum crude protein values of fish meat and roes was determined in May Received 21.12.2018 Received in revised (18.61g/100g) and in April (16.30g/100g), respectively. SFA’s form 03.05.2019 (saturated fatty acids), MUFA’s (monounsaturated fatty acids) Accepted 30.09.2019 and PUFA’s (polyunsaturated fatty acids) of fish meat and roes had been varied during the season. The minimum and maximum EPA, DHA contents were found as 7.42–10.72, Corresponding 3.39–22.67g/100g in meat and 0.03-0.37, 3.79–4.76 g/100g in author: roe, respectively. -
Little Fish, Big Impact: Managing a Crucial Link in Ocean Food Webs
little fish BIG IMPACT Managing a crucial link in ocean food webs A report from the Lenfest Forage Fish Task Force The Lenfest Ocean Program invests in scientific research on the environmental, economic, and social impacts of fishing, fisheries management, and aquaculture. Supported research projects result in peer-reviewed publications in leading scientific journals. The Program works with the scientists to ensure that research results are delivered effectively to decision makers and the public, who can take action based on the findings. The program was established in 2004 by the Lenfest Foundation and is managed by the Pew Charitable Trusts (www.lenfestocean.org, Twitter handle: @LenfestOcean). The Institute for Ocean Conservation Science (IOCS) is part of the Stony Brook University School of Marine and Atmospheric Sciences. It is dedicated to advancing ocean conservation through science. IOCS conducts world-class scientific research that increases knowledge about critical threats to oceans and their inhabitants, provides the foundation for smarter ocean policy, and establishes new frameworks for improved ocean conservation. Suggested citation: Pikitch, E., Boersma, P.D., Boyd, I.L., Conover, D.O., Cury, P., Essington, T., Heppell, S.S., Houde, E.D., Mangel, M., Pauly, D., Plagányi, É., Sainsbury, K., and Steneck, R.S. 2012. Little Fish, Big Impact: Managing a Crucial Link in Ocean Food Webs. Lenfest Ocean Program. Washington, DC. 108 pp. Cover photo illustration: shoal of forage fish (center), surrounded by (clockwise from top), humpback whale, Cape gannet, Steller sea lions, Atlantic puffins, sardines and black-legged kittiwake. Credits Cover (center) and title page: © Jason Pickering/SeaPics.com Banner, pages ii–1: © Brandon Cole Design: Janin/Cliff Design Inc.