Consulta: creatorFacets:"Murua, Hilario"
Registros recuperados: 11
Data/hora: 12/06/2024 14:39:20

EU purse seine fishery interaction with marine turtles in the Atlantic and Indian Oceans: a 15 years analyses
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Clermont, Sandra; Chavance, Pierre; Delgado De Molina, Alicia; Murua, Hilario; Ruiz, Jon; Ciccione, Stephane; Bourjea, Jerome.
Bycatch of marine turtles, vulnerable or endangered species, is a growing issue of all fisheries, including Oceanic purse-seine fishery. The present paper seeks to assess marine turtle bycatch at a spatial and temporal level in the European purse seine fishery operating in the Atlantic and Indian Oceans. The study was based on data collected through French and Spanish observer programs from 1995 to 2011, a period where more than 230 000 fishing sets were realized by the UE fleets in both Oceans. A total of 15 913 fishing sets were observed, including 6 515 on drifting Fish Aggregate Devices (FAD) and 9 398 on Free Swimming Schools (FSC). Over the study period, 597 turtles were caught, 86% being released alive at sea. At the same time, from 2003 to 2011, 14...
Tipo: Text
Palavras-chave: European tuna fishery; Purse seine; Marine turtle; Bycatch; Atlantic and Indian Oceans.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00149/25991/24087.pdf

Marine turtle interaction with purse-seine fishery in the Atlantic and Indian oceans: Lessons for management
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Bourjea, Jerome; Clermont, Sandra; Delgado, Alicia; Murua, Hilario; Ruiz, Jon; Ciccione, Stephane; Chavance, Pierre.
Bycatch of endangered marine turtles is a growing issue for the management of all fisheries, including the oceanic purse-seine fishery. The aim of this study was to assess the spatial and temporal variation in bycatch rates of these species in the entire European purse-seine fishery operating in the Atlantic and Indian oceans. The study was based on data collected through observer programs from 1995 to 2011. During that period, a total of 15 913 fishing sets were observed, including 6 515 on Drifting Fish Aggregating Devices (DFADs) and 9 398 on free swimming schools, representing a global coverage of 10.3% and 5.1% of the total fishing activity in the Atlantic and Indian Ocean, respectively. Moreover, from 2003 to 2011, 14 124 specific observations were...
Tipo: Text
Palavras-chave: Bycatch; Marine turtle; Fishery impacts; Fishery management; Atlantic Ocean; Indian Ocean.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00206/31760/30632.pdf

Ecological data for western Indian Ocean tuna
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Bodin, Nathalie; Chassot, Emmanuel; Sardenne, Fany; Zudaire, Iker; Grande, Maitane; Dhurmeea, Zahirah; Murua, Hilario; Barde, Julien.
Tipo: Text
Palavras-chave: Energetics; Fatty acids; Lipids; Morphometrics; Multi-tissues; Proteins; Stable isotopes; Trophic ecology; Tropical marine ecosystems; Tuna fisheries.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00626/73787/75067.pdf

Provision of scientific advice for the purpose of the implementation of the EUPOA sharks. Final Report. European Commission, Studies for Carrying out the Common Fisheries Policy (MARE/2010/11 - LOT 2)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Murua, Hilario; Abascal, Francisco J.; Amande, J; Ariz, P; Bach, Pascal; Chavance, Pierre; Coelho, R; Korta, M; Poisson, Francois; Santos, M. N.; Seret, Bernard.
The scope of the European Union Plan of Action for Sharks covers directed commercial, by-catch commercial, directed recreational, and by-catch recreational fishing of any chondrichthyans within European Union waters. It also includes any fisheries covered by current and potential agreements and partnerships between the European Union and third countries, as well as fisheries in the high seas and fisheries covered by RFMOs managing or issuing non-binding recommendations outside European Union waters. Scientific advice for the purpose of the management of shark species in the high seas is carried out mainly via the Scientific Committees of the relevant Regional Fisheries Management Organisations (RFMO), as well as through specific projects by national...
Tipo: Text
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00160/27111/25298.pdf

Global habitat preferences of commercially valuable tuna
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Arrizabalaga, Haritz; Dufour, Florence; Kell, Laurence; Merino, Gorka; Ibaibarriaga, Leire; Chust, Guillem; Irigoien, Xabier; Santiago, Jose Luis; Murua, Hilario; Fraile, Igaratza; Chifflet, Marina; Goikoetxea, Nerea; Sagarminaga, Yolanda; Aumont, Olivier; Bopp, Laurent; Herrera, Miguel; Fromentin, Jean-marc; Bonhomeau, Sylvain.
In spite of its pivotal role in future implementations of the Ecosystem Approach to Fisheries Management, current knowledge about tuna habitat preferences remains fragmented and heterogeneous, because it relies mainly on regional or local studies that have used a variety of approaches making them difficult to combine. Therefore in this study we analyse data from six tuna species in the Pacific, Atlantic and Indian Oceans in order to provide a global, comparative perspective of habitat preferences. These data are longline catch per unit effort from 1958 to2007 for albacore, Atlantic bluefin, southern bluefin, bigeye, yellowfin and skipjack tunas. Both quotient analysis and Generalized Additive Models were used to determine habitat preference with respect to...
Tipo: Text
Palavras-chave: Habitat; Tuna fisheries; Catch/effort; Environmental conditions; Quotient analysis; Generalised Additive Models; Ecosystem Approach to Fisheries Management.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00201/31190/29589.pdf

Elasmobranch bycatch distributions and mortality: insights from the European tropical tuna purse-seine fishery
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Clavareau, Lyndsay; Sabarros, Philippe; Escalle, Lauriane; Bach, Pascal; Abascal, Francisco J.; Lopez, Jon; Murua, Hilario; Pascual Alayon, Pedro J.; Ramos, Maria Lourdes; Ruiz, Jon; Mérigot, Bastien.
Despite bycatch of elasmobranch (sharks and rays) being a major concern in most fisheries worldwide, there is a lack of knowledge on their spatio-temporal species distribution, biology (life stage and sex-ratios), as well as their at-haulback mortality rate. Observer data from the French and Spanish tropical purse-seine tuna fisheries operating in the Eastern Atlantic and Western Indian Oceans between 2005 and 2017 were analysed to investigate elasmobranch bycatch. Data included 24 elasmobranchs species and distribution patterns of catch per unit of effort (CPUE) by species and sex-ratio were found to vary with life stages, areas, seasons and fishing modes. In general, higher catches were found in FAD-associated sets (&gt;40%) than free tuna school sets...
Tipo: Text
Palavras-chave: Biodiversity; Spatio-temporal distribution; Life stage; Sex ratio; At-haulback mortality.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00642/75386/76177.pdf

EU project for the Provision of Scientific Advice for the Purpose of the implementation of the EUPOA sharks: a brief overview of the results for Indian Ocean
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Murua, Hilario; Santos, M. N.; Chavance, Pierre; Amande, J; Abascal, Francisco J.; Ariz, Javier; Bach, Pascal; Korta, M; Poisson, Francois; Coelho, R; Seret, Bernard.
The objective of this project was to obtain scientific advice for the purpose of implementing the EUPOA on sharks as regards the facilitation of monitoring fisheries and shark stock assessment on a species-specific level in the high seas. The study was focused on major elasmobranch species caught by both artisanal and industrial large pelagic fisheries on the High Seas of the Atlantic, Indian and Pacific area, which are currently monitored and potentially managed by respective Tuna RFMOs. Estimated “potential” shark species catch in the Indian Ocean is around 160,000 t for 22,000 t. presently declared (7 times higher than declared). Considering all sharks that are not reported at species level, the total amount of shark declared was around 100,000 tons...
Tipo: Text
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00160/27160/25359.pdf

Otolith chemical fingerprints of skipjack tuna (Katsuwonus pelamis) in the Indian Ocean: First insights into stock structure delineation
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Artetxe-arrate, Iraide; Fraile, Igaratza; Farley, Jessica; Darnaude, Audrey M.; Clear, Naomi; Rodríguez-ezpeleta, Naiara; Dettman, David L.; Pécheyran, Christophe; Krug, Iñigo; Médieu, Anais; Ahusan, Mohamed; Proctor, Craig; Priatna, Asep; Lestari, Pratiwi; Davies, Campbell; Marsac, Francis; Murua, Hilario.
The chemical composition of otoliths (earbones) can provide valuable information about stock structure and connectivity patterns among marine fish. For that, chemical signatures must be sufficiently distinct to allow accurate classification of an unknown fish to their area of origin. Here we have examined the suitability of otolith microchemistry as a tool to better understand the spatial dynamics of skipjack tuna (Katsuwonus pelamis), a highly valuable commercial species for which uncertainties remain regarding its stock structure in the Indian Ocean. For this aim, we have compared the early life otolith chemical composition of young-of-the-year (&lt;6 months) skipjack tuna captured from the three main nursery areas of the equatorial Indian Ocean (West,...
Tipo: Text
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00687/79908/82810.pdf

Technical mitigation measures for sharks and rays in fisheries   for tuna and tuna-like species: turning possibility into reality
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Poisson, Francois; Abascal Crespo, Francisco; Ellis, Jim R.; Chavance, Pierre; Pascal, Bach; Santos, Miguel. N.; Seret, Bernard; Korta, Maria; Coelho, Rui; Ariz, Javier; Murua, Hilario.
Tuna fisheries have been identified as one of the major threats to populations of other marine vertebrates, including sea turtles, sharks, seabirds and marine mammals. The development of technical mitigation measures (MM) in fisheries is part of the code of conduct for responsible fisheries. An in-depth analysis of the available literature regarding bycatch mitigation in tuna fisheries with special reference to elasmobranchs was undertaken. Studies highlighting promising MMs were reviewed for four tuna fisheries (longline, purse seine, driftnets and gillnet, and rod and line – including recreational fisheries). The advantages and disadvantages of different MMs are discussed and assessed based on current scientific knowledge. Current management measures for...
Tipo: Text
Palavras-chave: Mitigation; Elasmobranch; Bycatch; Pelagic; Mortality; Tuna regional fishery management organizations.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00364/47474/47493.pdf

Accumulation and mobilization of lipids in relation to reproduction of yellowfin tuna (Thunnus albacares) in the Western Indian Ocean
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Zudaire, Iker; Murua, Hilario; Grande, Maitane; Pernet, Fabrice; Bodin, Nathalie.
Total lipid content and lipid class composition were analyzed in gonads, liver and white muscle of yellowfin tuna (Thunnus albacares) throughout ovary development to understand its reproductive allocation strategy and to assess the relation between female condition and reproduction. A total of 112 females were collected onboard purse-seiner in the Western Indian Ocean from January to March 2009, from June to July 2009, and from April to May 2010. Gonads were characterized by highly variable total lipid contents ranging from 5 to 27 μg mg−1 of wet weight (ww) with a predominance of neutral lipids, mainly triacylglycerols (TAG) and sterol- and wax-esters. The different lipid classes in gonads described an accumulative pattern through the maturity process...
Tipo: Text
Palavras-chave: Tropical tuna; Lipid class composition; Reproductive allocation strategy; Income-capital breeder; Fecundity; FADs.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00171/28266/28075.pdf

Present and Future Potential Habitat Distribution of Carcharhinus falciformis and Canthidermis maculata By-Catch Species in the Tropical Tuna Purse-Seine Fishery under Climate Change
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Lezama-ochoa, Nerea; Murua, Hilario; Chust, Guillem; Van Loon, Emiel; Ruiz, Jon; Hall, Martin; Chavance, Pierre; De Moline, Alicia Delgado; Villarino, Ernesto.
By-catch species from tropical tuna purse seine fishery have been affected by fishery pressures since the last century; however, the habitat distribution and the climate change impacts on these species are poorly known. With the objective of predicting the potential suitable habitat for a shark (Carcharhinus falciformis) and a teleost (Canthidermis maculata) in the Indian, Atlantic and Eastern Pacific Oceans, a MaxEnt species distribution model (SDM) was developed using data collected by observers in tuna purse seiners. The relative percentage of contribution of some environmental variables (depth, sea surface temperature, salinity and primary production) and the potential impact of climate change on species habitat by the end of the century under the A2...
Tipo: Text
Palavras-chave: By-catch; MaxEnt; Silky shark; Rough triggerfish; Habitat suitability; Climate change; Tropical purse seiners; Ecosystem approach to fishery management.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00677/78903/81246.pdf