J. Valeiras

Instituto Español de Oceanografía

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

E. Abad

Instituto Español de Oceanografía

Graham J. Pierce

Instituto de Investigacións Mariñas

J.M. Bellido-Millán

Centro Oceanográfico de Murcia

Alberto Serrano

Centro Oceanográfico de Santander

E.M. Velasco

Instituto Español de Oceanografía

M.N. Pérez-Contreras

Bellvitge University Hospital

Salvador García‐Barcelona

Instituto Español de Oceanografía

María Grazia Pennino

Instituto Español de Oceanografía

Camilo Saavedra

Instituto Español de Oceanografía

Daniel Oesterwind

Johann Heinrich von Thünen-Institut

Cooperative Institutions

Instituto Español de Oceanografía

Consejo Superior de Investigaciones Científicas

Universidade de Vigo

Instituto de Investigacións Mariñas

Institute of Marine Research

University of Aveiro

Centro Oceanográfico de Vigo

University of Aberdeen

Universidade de Santiago de Compostela

Centro Oceanográfico de Santander

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

BLUEFIN TUNA (THUNNUS THYNNUS) TAGGING SURVEY IN THE BAY OF BISCAY IN SUMMER 2005

Santiago Barreiro M. Quintans J. Valeiras M. Ruíz Haritz Arrizabalaga

,SUMMARY A brief summary of the conventional tagging survey carried out during the summer fishing season in 2005 in the Bay of Biscay is presented. A total of 1696 juveniles of bluefin tuna have been tagged, corresponding to group ages 1 and 2. Two different conventional tags have been used. Fifty-one recaptures have been recovered up to date. RESUME

Thunnus

Cite

Citations (1)

Evidence of phenotypic plasticity in Alloteuthis media (Linnaeus, 1758) from morphological analyses on North Sea specimens and DNA barcoding of the genus Alloteuthis Wülker, 1920 across its latitudinal range

Marine Biology (2023)

Edel Sheerin Anne Power Daniel Oesterwind David C. Haak E. Abad

Abstract Despite being landed in commercial cephalopod fisheries, species of Alloteuthis are not yet well defined, with A. subulata and A. media often confused. DNA barcoding combined with morphometric analyses has begun to clarify the distinction between these two morphologically similar species but has been limited in its geographic coverage to date. Herein, we provide DNA barcodes for 228 specimens collected from Guinea Bissau in the south, up the Atlantic coast, to the Irish shelf and North Sea. Employing species delimitation analyses, and with comparison to the literature, we identified 24 individuals of A. africana, 66 individuals of A. subulata and 138 individuals of A. media . We confirm that A. media has the northernmost distribution and is the only species identified by DNA sequencing from the Irish shelf and North Sea. We analysed morphometric measures and indices from 388 individuals from the North Sea, a subset of which ( n = 58) were barcoded. The most useful traits for identification were tail length as a percentage of dorsal mantle length, and largest club sucker width as a percentage of head width. By comparison to other published data, we determined that A. media phenotypes vary substantially across the geographic range of this species. This partly explains the difficulties in morphological identification and suggests regional identification guides may be required in support of fisheries management. Interregional analyses suggest character displacement may occur where species co-exist.

DNA Barcoding

Cephalopod

10.1007/s00227-023-04178-4

Cite

Citations (4)

Nuevas herramientas de monitorización electrónica para una gestión sostenible y en línea de los recursos pesqueros: el proyecto sicaptor

Luís T. Antelo Juan Carlos Durán Ovalle Carlos Vilas Esther Abad J. Valeiras

Poster.-- XXII Foro dos Recursos Marinos e da Acuicultura das Rias Galegas, O Grove, 10-11 de outubro de 2019

Source

Cite

Citations (0)

Ecologically meaningful marine areas in the southern NE Atlantic: insights from marine predator communities

M. Louzao-Arsuaga J. Valeiras Salvador García‐Barcelona M.Á.R. Fernández Arturo Acero P.

Source

Cite

Citations (0)

Assessment of cephalopods in European waters: state of the art and ways forward

Graham J. Pierce Jean-Paul Robin Carlos Moreno Castaño Christopher Barrett Vladimir Laptikhovsky

Source

Cite

Citations (0)

Scientific, Technical and Economic Committee for Fisheries (STECF) - Review of technical measures (part 1) (STECF-20-02)

Sarah Kraak Daniel Stepputtis Ralf Döring Christoph Stransky François Bastardie

Commission Decision of 25 February 2016 setting up a Scientific, Technical and Economic Committee for Fisheries, C(2016) 1084, OJ C 74, 26.2.2016, p. 4–10. The Commission may consult the group on any matter relating to marine and fisheries biology, fishing gear technology, fisheries economics, fisheries governance, ecosystem effects of fisheries, aquaculture or similar disciplines. This reporte valuates the performance of technical measures to conserve fishery resources and protect marine ecosystems in accordance with Article 31 of Regulation (EU) 1241/201.

Fisheries law

Marine Fisheries

Fisheries science

Fishing industry

European commission

10.2760/734593

Cite

Citations (2)

Predictive distribution habitat models for common dolphin (Delphinus delphis) in the N and NW waters of Spain

P. Gutiérrez Camilo Saavedra Maite Louzao Tim Gerrodette J. Valeiras

Poster presented at the 30th Conference of the European Cetacean Society (ECS), March 2016, Funchal (Madeira)

Delphinus delphis

Source

Cite

Citations (0)

Comparing data-limited methods for resources in the Spanish Atlantic waters: advantages and limitations

María Grazia Pennino E. Abad Alexandre Alonso‐Fernández Marta Cousido‐Rocha Santiago Cerviño

Source

Cite

Citations (0)

Occurrence of Ophisurus serpens (Anguilliformes, Ophichthidae) from Galician waters (NW Spain)

Cybium (2011)

J. Valeiras M.Á. Armesto-López E. Abad Rafael Bañón

(1) Unidade tecnica de Pesca de Baixura (UtPB), direccion Xeral de Recursos marinos. Conselleria de Pesca e asuntos maritimos, Rua do Valino 63-65, 15703 santiago de Compostela, spain. (2) Centro Oceanograficode Vigo, Instituto Espanol de Oceanografia (IEO), Apdo. 1552, 36200 Vigo, Spain. [xulio.valeiras@vi.ieo.es] [angeles.armesto@vi.ieo.es] [esther.abad@vi.ieo.es]* Corresponding author [anoplogaster@yahoo.es]

Serpens

Source

Cite

Citations (5)

Multi-method approach shows stock structure inLoligo forbesiisquid

ICES Journal of Marine Science (2022)

Edel Sheerin Leigh Barnwall E. Abad Angela Larivain Daniel Oesterwind

Abstract Knowledge of stock structure is a priority for effective assessment of commercially-fished cephalopods. Loligo forbesii squid are thought to migrate inshore for breeding and offshore for feeding and long-range movements are implied from past studies showing genetic homogeneity in the entire neritic population. Only offshore populations (Faroe and Rockall Bank) were considered distinct. The present study applied mitchondrial and microsatellite markers (nine loci) to samples from Rockall Bank, north Scotland, North Sea, various shelf locations in Ireland, English Channel, northern Bay of Biscay, north Spain, and Bay of Cadiz. No statistically significant genetic sub-structure was found, although some non-significant trends involving Rockall were seen using microsatellite markers. Differences in L. forbesii statolith shape were apparent at a subset of locations, with most locations showing pairwise differences and statoliths from north Ireland being highly distinct. This suggests that (i) statolith shape is highly sensitive to local conditions and (ii) L. forbesii forms distinguishable groups (based on shape statistics), maintaining these groups over sufficiently long periods for local conditions to affect the shape of the statolith. Overall evidence suggests that L. forbesii forms separable (ecological) groups over short timescales with a semi-isolated breeding group at Rockall whose distinctiveness varies over time.

Loligo

10.1093/icesjms/fsac039

Cite

Citations (5)