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Working Document for the ICES WGCEPH on Cephalopod Fisheries and Life History
Working Document for the ICES WGCEPH on Cephalopod Fisheries and Life History. Lisbon, Portugal, 16-19 June 2014. Analysis of the relationships between Patagonian squid (Doryteuthis gahi) abundance and environmental parameters in the SW Atlantic using GIS tools Portela J.1 and Martinez, R.2 and Fernandes, W.2,3 1 Instituto Español de Oceanografía (IEO) Centro Oceanográfico de Vigo Cabo Estay‐Canido. 36200 Vigo, Spain [email protected] 2 Alfred Wegener Institute (AWI) Bremerhaven, Germany [email protected] 3 University of Aberdeen, Main Street, Newburgh, Aberdeenshire, AB41 6AA, UK e-mail: [email protected] ABSTRACT Doryteuthis (Loligo) gahi is the second most important cephalopod species in the SW Atlantic from a fisheries point of view. This species and hence, the fisheries profitability and sustainability, are subject to large inter-annual variability in recruitment strength, mainly due to interannual and seasonal variations of the Falkland/Malvinas Current. In this working document we analyse the environmental, geographical, temporal and physical factors affecting the distribution (abundance) of D. gahi in two areas where its abundance is highest, using geographic information systems tools. We found a slight positive correlation between CPUE and longitude, as well as between CPUE and depth in the northern area, but no correlations could be found between SST and the other explanatory variables. Regarding the southern area in summer-autumn, we found that CPUE increases with longitude as we go to the east, and with latitude. We also found positive correlations between SST and CPUE, as well as with depth. In winter spring our study revealed a slight relationship between CPUE and location, and with depth. -
A Review of Southern Ocean Squids Using Nets and Beaks
Marine Biodiversity (2020) 50:98 https://doi.org/10.1007/s12526-020-01113-4 REVIEW A review of Southern Ocean squids using nets and beaks Yves Cherel1 Received: 31 May 2020 /Revised: 31 August 2020 /Accepted: 3 September 2020 # Senckenberg Gesellschaft für Naturforschung 2020 Abstract This review presents an innovative approach to investigate the teuthofauna from the Southern Ocean by combining two com- plementary data sets, the literature on cephalopod taxonomy and biogeography, together with predator dietary investigations. Sixty squids were recorded south of the Subtropical Front, including one circumpolar Antarctic (Psychroteuthis glacialis Thiele, 1920), 13 circumpolar Southern Ocean, 20 circumpolar subantarctic, eight regional subantarctic, and 12 occasional subantarctic species. A critical evaluation removed five species from the list, and one species has an unknown taxonomic status. The 42 Southern Ocean squids belong to three large taxonomic units, bathyteuthoids (n = 1 species), myopsids (n =1),andoegopsids (n = 40). A high level of endemism (21 species, 50%, all oegopsids) characterizes the Southern Ocean teuthofauna. Seventeen families of oegopsids are represented, with three dominating families, onychoteuthids (seven species, five endemics), ommastrephids (six species, three endemics), and cranchiids (five species, three endemics). Recent improvements in beak identification and taxonomy allowed making new correspondence between beak and species names, such as Galiteuthis suhmi (Hoyle 1886), Liguriella podophtalma Issel, 1908, and the recently described Taonius notalia Evans, in prep. Gonatus phoebetriae beaks were synonymized with those of Gonatopsis octopedatus Sasaki, 1920, thus increasing significantly the number of records and detailing the circumpolar distribution of this rarely caught Southern Ocean squid. The review extends considerably the number of species, including endemics, recorded from the Southern Ocean, but it also highlights that the corresponding species to two well-described beaks (Moroteuthopsis sp. -
Seafood Group Project Final Report
University of California, Santa Barbara Bren School of Environmental Science and Management From Sea to Table: Recommendations for Tracing Seafood 2010 Group Project Jamie Gibbon Connor Hastings Tucker Hirsch Kristen Hislop Eric Stevens Faculty Advisors: Hunter Lenihan John Melack Client: Monterey Bay Aquarium’s Sustainable Seafood Initiative From Sea to Table: Recommendations for Tracing Seafood From Sea to Table: Recommendations for Tracing Seafood As authors of this Group Project report, we are proud to archive this report on the Bren School’s website such that the results of our research are available for all to read. Our signatures on the document signify our joint responsibility to fulfill the archiving standards set by the Bren School of Environmental Science & Management. Jamie Gibbon Connor Hastings Tucker Hirsch Kristen Hislop Eric Stevens The mission of the Bren School of Environmental Science & Management is to produce professionals with unrivaled training in environmental science and management who will devote their unique skills to the diagnosis, assessment, mitigation, prevention, and remedy of the environmental problems of today and the future. A guiding principal of the School is that the analysis of environmental problems requires quantitative training in more than one discipline and an awareness of the physical, biological, social, political, and economic consequences that arise from scientific or technological decisions. The Group Project is required of all students in the Master’s of Environmental Science and Management (MESM) Program. It is a three-quarter activity in which small groups of students conduct focused, interdisciplinary research on the scientific, management, and policy dimensions of a specific environmental issue. -
LABORATORY REARING of RHYNCHOTEUTHIONS of the OMMASTREPHID SQUID ILLEX ILLECEBROSUS (MOLLUSCA : CEPHALOPODA) N Balch, R O’Dor, P Helm
LABORATORY REARING OF RHYNCHOTEUTHIONS OF THE OMMASTREPHID SQUID ILLEX ILLECEBROSUS (MOLLUSCA : CEPHALOPODA) N Balch, R O’Dor, P Helm To cite this version: N Balch, R O’Dor, P Helm. LABORATORY REARING OF RHYNCHOTEUTHIONS OF THE OM- MASTREPHID SQUID ILLEX ILLECEBROSUS (MOLLUSCA : CEPHALOPODA). Vie et Milieu / Life & Environment, Observatoire Océanologique - Laboratoire Arago, 1985, pp.243-246. hal- 03022163 HAL Id: hal-03022163 https://hal.sorbonne-universite.fr/hal-03022163 Submitted on 24 Nov 2020 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. VIE MILIEU, 1985, 35 (3/4) : 243-246 LABORATORY REARING OF RHYNCHOTEUTHIONS OF THE OMMASTREPHID SQUID ILLEX ILLECEBROSUS (MOLLUSCA : CEPHALOPODA) N. BALCH(1), R.K. O'DOR <2) and P. HELM(2) (1) Aquatron Laboratory, Institute of Oceanography (2) Biology Department, Dalhousie University, Halifax, Nova Scotia, Canada, B3H 4J1 OCEANIC SQUID ABSTRACT. — A methodology is presented for obtaining egg masses from captive LABORATORY REARING populations of the ommastrephid squid Illex illecebrosus and for incubating them LARVAE intact under controlled conditions. Survival of rhynchoteuthion larvae for 9 days after CEPHALOPODA hatching is the best reported to date, though it has not yet been possible to induce feeding. -
Helminth Infection in the Short-Finned Squid Illex Coindetii (Cephalopoda, Ommastrephidae) Off NW Spain
DISEASES OF AQUATIC ORGANISMS Published September 14 Dis aquat Org Helminth infection in the short-finned squid Illex coindetii (Cephalopoda, Ommastrephidae) off NW Spain 'Laboratorio de Parasitologia, Facultad de Ciencias, Universidad de Vigo, Ap. 874 E-36200 Vigo, Spain 'Institute de Investigacions Marinas (CSIC),Eduardo Cabello 6, E-36208 Vigo, Spain ABSTRACT: A survey of parasites in 600 short-finned squid fllex coindetii (Verany. 1839) taken from 2 locations (north and south Galicia) off the northwestern Ibenan Peninsula revealed the presence of numerous somatoxenous helrninths. Three genera of Tetraphyllidean plerocercoids were represented (prevalences: Ph}~llobothriurn sp., 45.7%; Dinobothriunl sp., 0.8%; and Pelichnibothrium speciosum, 0.001 %); 1 Trypanorhynchidean metacestode was also present (Nybelinia vamagutll. 0.4 %). In addi- tion, larval nematodes of Anisakis simplex (L3) were recorded (10.6%). Abundance of infection was examined in relation to squid sex, standard length, maturity and locality. This analysis indicated that parasite infection was lower in the southern squids than in the northern squid group. Over the entire survey area, parasite infection showed a close positive correlation with host life-cycle, often with the greatest number of parasites among the largest and highest maturity individuals (>l8to 20 cm; matu- rlty stage V). KEY WORDS: Illex coindetii . Northwestern Iberian Peninsula Helminth parasites INTRODUCTION northeastern Atlantic waters. To this end, in the present paper some aspects of the host-parasite rela- Cephalopods represent 2.1 % of total worldwide tionship are examined. A possible local variability in catches of marine organisms (Guerra & Perez- degree of infection was also assessed in the light of the Gandaras 1983).In spite of the economic importance of clearly different hydrographical conditions between this fishery, relatively little is known about the host- northern and southern shelf areas off the Galician parasite relationships of teuthoid cephalopods (see coast (Fraga et al. -
What's On? What's Out?
CCIIAACC NNeewwsslleetttteerr Issue 2, September 2010 would like to thank everyone the cephalopod community. So EEddiittoorriiaall Ifor their contributions to this if you find yourself appearing Louise Allcock newsletter. To those who there, don't take it as a slur on responded rapidly back in June your age - but as a compliment to my request for copy I must to your contribution!! apologise. A few articles didn't One idea that I haven't had a make the deadline of 'before my chance to action is a suggestion summer holiday'... Other from Eric Hochberg that we deadlines then had to take compile a list of cephalopod precedence. PhD and Masters theses. I'll Thanks to Clyde Roper for attempt to start this from next suggesting a new section on year. If you have further 'Old Faces' to complement the suggestions, please let me have 'New Faces' section and to them and I'll do my best to Sigurd von Boletzky for writing incorporate them. the first 'Old Faces' piece on Pio And finally, the change in Fioroni. You don't have to be colour scheme was prompted dead to appear in 'Old Faces': in by the death of my laptop and fact you don't actually have to all the Newsletter templates be old - but you do have to have that I had so lovingly created. contributed years of service to Back up? What back up... WWhhaatt''ssoonn?? 9tth - 15tth October 2010 5th International Symposium on Pacific Squid La Paz, BCS, Mexico. 12tth - 17tth June 2011 8th CLAMA (Latin American Congress of Malacology) Puerto Madryn, Argentina See Page 13 for more details 18tth - 22nd June 2011 6th European Malacology Congress Vitoria, Spain 2012 CIAC 2012 Brazil WWhhaatt''ssoouutt?? Two special volumes of cephalopod papers are in nearing completion. -
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. -
Genetic Structure and Diversity of Squids with Contrasting Life Histories in the Humboldt Current System Estructura Y Diversidad
Genetic diversity of squids Hidrobiológica 204, 24 (): 1-0 Genetic structure and diversity of squids with contrasting life histories in the Humboldt Current System Estructura y diversidad genética de calamares con historias de vida contrastantes en el Sistema de Corrientes de Humboldt Christian Marcelo Ibáñez and Elie Poulin Instituto de Ecología y Biodiversidad, Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile. Las Palmeras # 3425, Ñuñoa. Chile e-mail: [email protected] Ibáñez C. M and Elie Poulin. 204. Genetic structure and diversity of squids with contrasting life histories in the Humboldt Current System. Hidrobiológica 24 (): -0. ABSTRACT Dosidiscus gigas and Doryteuthis gahi are the most abundant squids in the Humboldt Current System (HCS). These species have contrasting life histories. To determine the genetic structure and diversity of these species, we collected samples from different places in the HCS and amplified a fragment of the mitochondrial cytochrome C oxidase I gene. The molecular analysis of D. gigas revealed low genetic diversity, absence of population structure and evidence for a demographic expansion during the transition from the last glacial period to the current interglacial. These results sug- gest that D. gigas is composed of one large population with high levels of gene flow throughout the HCS. In the case of D. gahi, the sequences indicated the presence of two population units in the HCS, one in south-central Chile and one in Peru. The Chilean unit had greater genetic diversity, suggesting that it is an old, relatively stable population. In the Peruvian unit there was less genetic diversity and evidence of a recent demographic expansion. -
Stock Assessment in Inland Fisheries: a Foundation for Sustainable Use and Conservation
See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/303808362 Stock assessment in inland fisheries: a foundation for sustainable use and conservation Article in Reviews in Fish Biology and Fisheries · June 2016 DOI: 10.1007/s11160-016-9435-0 READS 614 12 authors, including: Ian G Cowx John D. Koehn University of Hull Arthur Rylah Institute for Environment… 239 PUBLICATIONS 5,579 CITATIONS 120 PUBLICATIONS 1,948 CITATIONS SEE PROFILE SEE PROFILE David B. Bunnell Shannon D. Bower United States Geological Survey Carleton University 95 PUBLICATIONS 1,260 CITATIONS 14 PUBLICATIONS 20 CITATIONS SEE PROFILE SEE PROFILE All in-text references underlined in blue are linked to publications on ResearchGate, Available from: Kai Lorenzen letting you access and read them immediately. Retrieved on: 22 August 2016 Rev Fish Biol Fisheries (2016) 26:405–440 DOI 10.1007/s11160-016-9435-0 REVIEWS Stock assessment in inland fisheries: a foundation for sustainable use and conservation K. Lorenzen . I. G. Cowx . R. E. M. Entsua-Mensah . N. P. Lester . J. D. Koehn . R. G. Randall . N. So . S. A. Bonar . D. B. Bunnell . P. Venturelli . S. D. Bower . S. J. Cooke Received: 27 July 2015 / Accepted: 18 May 2016 / Published online: 4 June 2016 Ó Springer International Publishing Switzerland 2016 Abstract Fisheries stock assessments are essential widespread presence of non-native species and the for science-based fisheries management. Inland fish- frequent use of enhancement and restoration measures eries pose challenges, but also provide opportunities such as stocking affect stock dynamics. This paper for biological assessments that differ from those outlines various stock assessment and data collection encountered in large marine fisheries for which many approaches that can be adapted to a wide range of of our assessment methods have been developed. -
Where Does Your Seafood Come From?
Where Does Your Seafood Come From? Author contact information Wynn W. Cudmore, Ph.D., Principal Investigator Northwest Center for Sustainable Resources Chemeketa Community College P.O. Box 14007 Salem, OR 97309 E-mail: [email protected] Phone: 503-399-6514 Published 2009 DUE # 0757239 1 NCSR curriculum modules are designed as comprehensive instructions for students and supporting materials for faculty. The student instructions are designed to facilitate adaptation in a variety of settings. In addition to the instructional materials for students, the modules contain separate supporting information in the "Notes to Instructors" section, and when appropriate, PowerPoint slides. The modules also contain other sections which contain additional supporting information such as assessment strategies and suggested resources. The PowerPoint slides associated with this module are the property of the Northwest Center for Sustainable Resources (NCSR). Those containing text may be reproduced and used for any educational purpose. Slides with images may be reproduced and used without prior approval of NCSR only for educational purposes associated with this module. Prior approval must be obtained from NCSR for any other use of these images. Permission requests should be made to [email protected]. Acknowledgements We thank David Lonsdale and Richard O’Hara of Chemeketa Community College for their thoughtful reviews. Their comments and suggestions greatly improved the quality of this module. We thank NCSR administrative assistant, Liz Traver, -
Review of Contemporary Cetacean Stock Assessment Models
1 Review of Contemporary Cetacean Stock Assessment Models André E. Punt School of Aquatic and Fishery Sciences, University of Washington, Seattle, WA 98195 Workshop on Methods for Monitoring the Status of Eastern Tropical Pacific Ocean Dolphin Populations 18-20 October 2016, La Jolla, California 2 1 DRAFT 2 3 Review of Contemporary Cetacean Stock Assessment Models 4 5 André E. Punt 6 School of Aquatic and Fishery Sciences, University of Washington, Seattle, WA 98195 7 8 Abstract 9 Model-based methods of analysis are widely used to conduct assessments, and to provide the 10 operating models on which management strategy evaluation is based, for cetacean stocks. 11 This paper reviews recent assessments and management strategy evaluations for cetacean 12 populations, with a view towards establishing best practice guidelines for such analyses. The 13 models on which these analyses are based range from simple exponential trend models that 14 ignore density-dependence to complex multi-stock age-sex- and stage-structured models that 15 form the basis for management strategy evaluation. Most analyses assume that density- 16 dependence is on calf survival (which implicitly includes maturity and pregnancy rate), but it 17 could also impact the survival rate of adults or the age-at-maturity. Cetaceans seldom have 18 more than one calf per female each year, which limits the variation in calf numbers, and 19 places an upper limit on the effects of density-dependent calf survival. The models differ in 20 terms of whether the population projections start when substantial catches first occurred or 21 whether allowance is made for time-varying carrying capacity by starting the model in a more 22 recent year. -
A Guide to Fisheries Stock Assessment from Data to Recommendations
A Guide to Fisheries Stock Assessment From Data to Recommendations Andrew B. Cooper Department of Natural Resources University of New Hampshire Fish are born, they grow, they reproduce and they die – whether from natural causes or from fishing. That’s it. Modelers just use complicated (or not so complicated) math to iron out the details. A Guide to Fisheries Stock Assessment From Data to Recommendations Andrew B. Cooper Department of Natural Resources University of New Hampshire Edited and designed by Kirsten Weir This publication was supported by the National Sea Grant NH Sea Grant College Program College Program of the US Department of Commerce’s Kingman Farm, University of New Hampshire National Oceanic and Atmospheric Administration under Durham, NH 03824 NOAA grant #NA16RG1035. The views expressed herein do 603.749.1565 not necessarily reflect the views of any of those organizations. www.seagrant.unh.edu Acknowledgements Funding for this publication was provided by New Hampshire Sea Grant (NHSG) and the Northeast Consortium (NEC). Thanks go to Ann Bucklin, Brian Doyle and Jonathan Pennock of NHSG and to Troy Hartley of NEC for guidance, support and patience and to Kirsten Weir of NHSG for edit- ing, graphics and layout. Thanks for reviews, comments and suggestions go to Kenneth Beal, retired assistant director of state, federal & constituent programs, National Marine Fisheries Service; Steve Cadrin, director of the NOAA/UMass Cooperative Marine Education and Research Program; David Goethel, commercial fisherman, Hampton, NH; Vincenzo Russo, commercial fisherman, Gloucester, MA; Domenic Sanfilippo, commercial fisherman, Gloucester, MA; Andy Rosenberg, UNH professor of natural resources; Lorelei Stevens, associate editor of Commercial Fisheries News; and Steve Adams, Rollie Barnaby, Pingguo He, Ken LaValley and Mark Wiley, all of NHSG.