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| Registros recuperados: 30 | |
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| 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 |
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| 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 |
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| Travassos Tolotti, Mariana; Filmalter, John David; Bach, Pascal; Travassos, Paulo; Seret, Bernard; Dagorn, Laurent. |
| Recently, declining populations of several pelagic shark species have led to global conservation concerns surrounding this group. As a result, a series of species-specific banning measures have been implemented by Regional Fishery Management Organizations (RFMOs) in charge of tuna fisheries, which include retention bans, finning bans and trading bans. There are both positive and negative aspects to most management measures, but generally, the positive aspects outweigh the negatives, ensuring the measure is beneficial to the resource and its users in the long term. Banning measures are a good first step towards the conservation of pelagic shark species, especially since they improve conservation awareness among fishers, managers and the public. Measures... |
| Tipo: Text |
Palavras-chave: Bycatch; Conservation; Fin trade; Pelagic shark; Tuna fisheries. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00626/73842/73726.pdf |
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| Gilman, Eric; Chaloupka, Milani; Dagorn, Laurent; Hall, Martin; Hobday, Alistair; Musyl, Michael; Pitcher, Tony; Poisson, Francois; Restrepo, Victor; Suuronen, Petri. |
| Bycatch in fisheries can have profound effects on the abundance of species with relatively low resilience to increased mortality, can alter the evolutionary characteristics and concomitant fitness of affected populations through heritable trait-based selective removals, and can alter ecosystem functions, structure and services through food web trophic links. We challenge current piecemeal bycatch management paradigms, which reduce the mortality of one taxon of conservation concern at the unintended expense of others. Bycatch mitigation measures may also reduce intraspecific genetic diversity. We drew examples of broadly prescribed ‘best practice’ methods to mitigate bycatch that result in unintended cross-taxa conflicts from pelagic longline, tuna purse... |
| Tipo: Text |
Palavras-chave: Bycatch; Conflicts; Decision support tool; Fisheries-induced evolution; Holistic management; Integrated management. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00475/58693/61206.pdf |
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| Bowlby, Heather D.; Benoît, Hugues P.; Joyce, Warren; Sulikowski, James; Coelho, Rui; Domingo, Andrés; Cortés, Enric; Hazin, Fabio; Macias, David; Biais, Gerard; Santos, Catarina; Anderson, Brooke. |
| Accurately characterizing the biology of a pelagic shark species is critical when assessing its status and resilience to fishing pressure. Natural mortality (M) is well known to be a key parameter determining productivity and resilience, but also one for which estimates are most uncertain. While M can be inferred from life history, validated direct estimates are extremely rare for sharks. Porbeagle (Lamna nasus) and shortfin mako (Isurus oxyrinchus) are presently overfished in the North Atlantic, but there are no directed fisheries and successful live release of bycatch is believed to have increased. Understanding M, post-release mortality (PRM), and variables that affect mortality are necessary for management and effective bycatch mitigation. From 177... |
| Tipo: Text |
Palavras-chave: Natural mortality; Recovery period; Lamnid sharks; Atlantic; Survival; Mitigation; Bycatch. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00688/80020/83005.pdf |
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| Vendeville, Philippe; Fadhel, Hosni; Magraoui, Amira; Sacchi, Jacques. |
| The demersal trawl fishery of the north Tunisian coast primarily targets the deep-water rose shrimp, Parapenaeus longirostris, and secondarily a variety of demersal fish species. These fishes include hake (Merluccius merluccius), common pandora (Pagellus erythrinus), red mullet (Mullus barbatus), surmullet (Mullus surmuletus), Atlantic horse mackerel (Trachurus trachurus), bogue (Boops boops), picarel (Spicara smaris) and spotted flounder (Citharus linguatula). A bioeconomic model was used to test management measures through scenarios that ran over eleven years to estimate the viability of the fishery according to biological and economic results. The most beneficial scenario was the combination of several management measures including a temporal closure of... |
| Tipo: Text |
Palavras-chave: Bioeconomic modeling; Bycatch; Deep-water rose shrimp; Mediterranean shrimp fisheries; Scenarios; Temporal closure. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00339/45048/44568.pdf |
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| Morizur, Yvon; Caillart, B; Tingley, D. |
| Introduction : It is now clear that the world's fishery resources are being subjected to exploitation at or above their capacity to produce maximum sustainable yields. At the same time as these trends are being felt, there is a very large wastage of fishery resources from discarding unwanted catches at sea. At the end of each fishing operation a part of the catch is often returned to the sea after sorting by the fishermen. A 1994 FAO report provided an estimate of global discards in commercial fisheries of 27 millions of tons per year compared to 50 million tons of direct human consumption. A more recent FAO document estimated that discards were in the order of 20 million tons in 1997. The majority of the world's fisheries are multi-species in nature and... |
| Tipo: Text |
Palavras-chave: Marine; Wastage; Overview; World; Social; Economic; Ecology; Biology; Impact; Target; Species; Gear; Fishery; Bycatch; Catch; Discards. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/1999/publication-1237.pdf |
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| Sempo, Gregory; Dagorn, Laurent; Robert, Marianne; Deneubourg, Jean-louis. |
| 1. Approximately 300 pelagic fish species naturally aggregate around floating objects (FOBs) at the surface of the oceans. Currently, more than 50% of the world catch of tropical tuna comes from the industrial tuna fisheries around drifting FOBs. Greater understanding of the complex decision-making processes leading to this aggregation pattern and the impact of the massive release of artificial FOBs by fishermen on the spatial distribution and management of tuna is needed. 2. We analyse how the interplay between social (relationships between individuals) and non-social (responses to the environment) behaviours may affect the spatial distribution of a population in a multi-FOB environment. Taking the example of tropical tunas associating with FOBs and using... |
| Tipo: Text |
Palavras-chave: Behaviour-based modelling; Bycatch; FAD; FOB; Sustainable fishery; Tuna. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00151/26275/24439.pdf |
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| Peltier, Hélène; Dabin, Willy; Dars, Cécile; Demaret, Fabien; Doremus, Ghislain; Van Canneyt, Olivier; Laran, Sophie; Mendez-fernadez, Paula; Spitz, Jérôme; Authier, Matthieu; Delphine, Pierre; Ridoux, Vincent. |
| Between the 1st of February and the March 31, 2017, 793 stranded cetaceans were found along the French Atlantic coasts. Common dolphins made up 84% of these strandings, and most of these presented evidence of death in fishing gear. The aim of this work is to test an approach that could help identify the fisheries potentially involved in a given stranding event. To do this we examined how the distributions of likely areas of mortality of bycaught dolphins, inferred from carcass drift modelling, coincide with fishing effort statistics of various fleets, generated from the Vessel Monitoring System, in the area over the same dates. Using reverse drift modelling, two main mortality areas were identified. A total of 3690 common dolphins (IC95% [2230; 6900]) were... |
| Tipo: Text |
Palavras-chave: Dolphins; Strandings; Bycatch; Fishing effort; Reverse drift; Vessel Monitoring System.. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00592/70392/68473.pdf |
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| Mancusi, Cecilia; Baino, Romano; Fortuna, Corina; De Sola, Luis Gil; Morey, Gabriel; Bradai, Mohamed Nejmeddine; Kallianotis, Argyrios; Soldo, Alen; Hemida, Farid; Saad, Adib Ali; Dimech, Mark; Peristeraki, Panagiota; Bariche, Michel; Clò, Simona; De Sabata, Eleonora; Castellano, Laura; Garibaldi, Fulvio; Lanteri, Luca; Tinti, Fausto; Pais, Antonio; Sperone, Emilio; Micarelli, Primo; Poisson, Francois; Sion, Letizia; Carlucci, Roberto; Cebrian-menchero, Daniel; Séret, Bernard; Ferretti, Francesco; El-far, Alaa; Saygu, Ismet; Shakman, Esmail A.; Bartoli, Alex; Guallart, Javier; Damalas, Dimitrios; Megalofonou, Persefoni; Vacchi, Marino; Bottaro, Massimiliano; Notarbartolo Di Sciara, Giuseppe; Follesa, Maria Cristina; Cannas, Rita; Kabasakal, Hakan; Zava, Bruno; Cavlan, Graziella; Jung, Armelle; Abudaya, Mohammed; Kolitari, Jerina; Barash, Adi; Joksimovic, Aleksandar; Marčeta, Bojan; Gonzalez Vilas, Luis; Tiralongo, Francesco; Giovos, Ioannis; Bargnesi, Filippo; Lelli, Stefano; Barone, Monica; Moro, Stefano; Mazzoldi, Carlotta; Charis, Charilaou; Abella, Alvaro Juan; Serena, Fabrizio; Colloca, Francesco; Cetkovic, Ilija. |
| The Mediterranean Large Elasmobranchs Monitoring (MEDLEM) database contains over 3000 records (more than 4000 individuals) of large elasmobranch species from 20 different countries around the Mediterranean and Black seas, observed from 1666 to 2017. The main species included in the archive are the devil fish (1 813 individuals), the basking shark (939 individuals), the blue shark (585 individuals) and the great white shark (337 individuals). In the last decades other species such as the shortfin mako (166 individuals), the spiny butterfly ray (138) and the thresher shark (174 individuals) were reported with an increasing frequency. This was possibly due to an increased public awareness on the conservation status of sharks, and a consequent development of... |
| Tipo: Text |
Palavras-chave: Bycatch; Databases; Geographical distribution; Large elasinobranchs; Mediterranean and Black seas; Sharks. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00649/76117/77080.pdf |
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| 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 |
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| Gilman, Eric; Chaloupka, Milani; Bach, Pascal; Fennell, Hannah; Hall, Martin; Musyl, Michael; Piovano, Susanna; Poisson, Francois; Song, Liming. |
| Fisheries can profoundly affect bycatch species with ‘slow’ life history traits. Managing bait type offers one tool to control species selectivity. Different species and sizes of marine predators have different prey, and hence bait, preferences. This preference is a function of a bait’s chemical, visual, acoustic and textural characteristics and size, and for seabirds the effect on hook sink rate is also important. We conducted a global meta-analysis of existing estimates of the relative risk of capture on different pelagic longline baits. We applied a Bayesian random effects meta-analytic regression modelling approach to estimate overall expected bait-specific catch rates. For blue shark and marine turtles, there were 34% (95% HDI: 4–59%) and 60% (95%... |
| Tipo: Text |
Palavras-chave: Bait; Bycatch; Longline; Mitigation; Selectivity; Tuna. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00643/75536/76441.pdf |
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| Morizur, Yvon; Gaudou, Olivier; Demaneche, Sebastien. |
| During the years 2008 to 2013 several observations of catches were planned on board of set netters fishing in the bay of Biscay, in the English Channel, in the North sea and in the Mediterranean area (around Corsica). All the observations were done on nets without pingers and they were pooled to provide an average bycatch rate of marine mammals by fleet. Estimates of annual bycatch by using the fishing efforts of the year 2012 were provided by fleet. Harbour porpoise Phocoena phocoena was the most common bycatch in set nets. An average annual estimate of 600 harbour porpoises was obtained for the French fleet; other species recorded in set nets were mainly common dolphin Delphinus delphis, striped dolphin Stenella coeruleoalba and the two species of seals... |
| Tipo: Text |
Palavras-chave: France; Bycatch; Marine mammals; Phocoena phocoena; Set nets; Trammel nets; Gill nets; EU regulation 812/2004. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00209/32016/30451.pdf |
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| Filmalter, John; Cowley, Paul; Forget, Fabien; Dagorn, Laurent. |
| The silky shark Carcharhinus falciformis is the primary elasmobranch bycatch in the global tuna purse seine fishery using fish aggregating devices (FADs). Information on the associative behaviour of this species with floating objects remains limited. Here the use of various electronic tags provided important new insight into this behaviour. Thirty-eight juvenile silky sharks (69 to 116 cm total length; TL) were tagged with acoustic tags at 9 drifting FADs equipped with satellite-linked acoustic receivers in the western Indian Ocean (total monitoring = 154 d). Presence/absence and swimming depth data were transmitted from the receivers. A subset of 17 individuals was also fitted with pop-up satellite archival tags (PSATs; n = 13), or internal archival tags... |
| Tipo: Text |
Palavras-chave: Shark; Behaviour; Telemetry; FAD; Bycatch. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00300/41086/73619.pdf |
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| Uhlmann, Sebastian S.; Van Helmond, Aloysius T. M.; Stefansdottir, Elisabet Kemp; Siguroardottir, Sigriour; Haralabous, John; Maria Bellido, Jose; Carbonell, A.; Catchpole, Tom; Damalas, Dimitrios; Fauconnet, Laurence; Feekings, Jordan; Garcia, Teresa; Madsen, Niels; Mallold, Sandra; Margeirsson, Sveinn; Palialexis, Andreas; Readdy, Lisa; Valeiras, Julio; Vassilopoulou, Vassiliki; Rochet, Marie-joelle. |
| To reduce the practice of discarding commercially fished organisms, several measures such as a discard ban and extra allowances on top of landings quotas (“catch quota”) have been proposed by the European Commission. However, for their development and successful implementation, an understanding of discard patterns on a European scale is needed. In this study, we present an inter-national synthesis of discard data collected on board commercial, towed-gear equipped vessels operating under six different national flags spanning from the Baltic to the Mediterranean Seas mainly between 2003 and 2008. We considered discarded species of commercial value such as Atlantic cod (Gadus morhua), haddock (Melanogrammus aeglefinus), European hake (Merluccius merluccius),... |
| Tipo: Text |
Palavras-chave: Bycatch; Common Fisheries Policy reform; Data Collection Framework; Discard reduction; Europe; Monitoring. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00198/30932/29347.pdf |
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| Mannocci, Laura; Forget, Fabien; Travassos Tolotti, Mariana; Bach, Pascal; Bez, Nicolas; Demarcq, Herve; Kaplan, David; Sabarros, Philippe; Simier, Monique; Capello, Manuela; Dagorn, Laurent. |
| Fisheries observer programs represent the most reliable way to collect data on fisheries bycatch. However, their limited coverage leads to important data gaps that preclude bycatch mitigation at the basin scale. Habitat models developed from available fisheries observer programs offer a potential solution to fill these data gaps. We focus on tropical tuna purse seine fisheries (TTPSF) that span across the tropics and extensively rely on floating objects (FOBs) for catching tuna schools, leading to the bycatch of other species associated with these objects. Bycatch under floating objects is dominated by five species, including the vulnerable silky shark Carcharhinus falciformis and four bony fishes (oceanic triggerfish Canthidermis maculata, rainbow runner... |
| Tipo: Text |
Palavras-chave: Bycatch; Habitat modelling; Hotspots; Fisheries observer programs; Geographical extrapolation; Tropical oceans. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00662/77385/78986.pdf |
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| Marceniuk,Alexandre Pires; Rotundo,Matheus Marcos; Caires,Rodrigo Antunes; Cordeiro,Ana Patricia Barros; Wosiacki,Wolmar Benjamin; Oliveira,Claudio; Souza-Serra,Rayla Roberta Maganhães de; Romão-Júnior,João Gomes; Santos,Wagner César Rosa dos; Reis,Thayson da Silva; Muniz,Mairink Ribeiro; Cardoso,Gustavo Stabile; Ferrari,Stephen; Klautau,Alex Garcia Cavalleiro de Macedo; Montag,Luciano. |
| ABSTRACT The Brazilian North coast is one of the world’s most important shrimp fishery grounds, with a total area of approximately 223,000 km2. However, the available data on the diversity of fish caught by the region’s industrial trawler fleet are limited to the commercially-valuable species. This lacuna in the data on the region’s marine fish fauna is worrying, both for the management of stocks and the conservation of the local biodiversity. The present study was based on a comprehensive inventory of the teleost fishes captured by the industrial outrigger trawling operations off the North coast of Brazil. This inventory recorded 201 species belonging to 64 families and 20 orders, and revealed a unique fauna, characterized by 17 endemic species, and a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiversity; Bycatch; Fishes discarded; Inventory; Marine fish; Outrigger trawling. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000200205 |
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| Diop, M.. |
| Résumé L’analyse des échantillons prélevés sur les captures des crevettiers et merluttiers espagnols opérant dans les eaux mauritaniennes entre 1991 et 1994, a montré que ces pêcheries engendrent beaucoup de prises accessoires. Ces dernières varient entre 87% et 89% pour la pêcherie crevettière et dépassent 64% pour la pêcherie merluttière. Le rapport prises accessoires/capture espèce cible varie donc de 7 :1 à 8 :1 pour les crevettiers et se situerait à environ 2 :1 pour les merluttiers. Les prises accessoires sont constituées principalement de poissons démersaux (représentés essentiellement par les sparidés), de céphalopodes (poulpe, seiches et calmar) et de petits pélagiques. Les poissons démersaux sont largement dominants. |
| Tipo: Journal Contribution |
Palavras-chave: Shrimp fisheries; Hake fisheries; Bycatch; Http://aims.fao.org/aos/agrovoc/c_15949. |
| Ano: 1996 |
URL: http://hdl.handle.net/1834/230 |
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| Registros recuperados: 30 | |
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