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Registros recuperados: 26
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3D-printed flow system for determination of lead in natural waters ArchiMer
Mattio, Elodie; Robert-peillard, Fabien; Branger, Catherine; Puzio, Kinga; Margaillan, Andre; Brach-papa, Christophe; Knoery, Joel; Boudenne, Jean-luc; Coulomb, Bruno.
The development of 3D printing in recent years opens up a vast array of possibilities in the field of flow analysis. In the present study, a new 3D-printed flow system has been developed for the selective spectrophotometric determination of lead in natural waters. This system was composed of three 3D-printed units (sample treatment, mixing coil and detection) that might have been assembled without any tubing to form a complete flow system. Lead was determined in a two-step procedure. A preconcentration of lead was first carried out on TrisKem Pb Resin located in a 3D-printed column reservoir closed by a tapped screw. This resin showed a high extraction selectivity for lead over many tested potential interfering metals. In a second step, lead was eluted by...
Tipo: Text Palavras-chave: Lead determination; 3D-printed MPFS system; Stereolithography; Natural waters.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00377/48770/49290.pdf
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3D-printed lab-on-valve for fluorescent determination of cadmium and lead in water ArchiMer
Mattio, Elodie; Robert-peillard, Fabien; Vassalo, Laurent; Branger, Catherine; Margaillan, Andre; Brach-papa, Christophe; Knoery, Joel; Boudenne, Jean-luc; Coulomb, Bruno.
In recent years, the development of 3D printing in flow analysis has allowed the creation of new systems with various applications. Up to now, 3D printing was mainly used for the manufacture of small units such as flow detection cells, preconcentration units or mixing systems. In the present study, a new 3D printed lab-on-valve system was developed to selectively quantify lead and cadmium in water. Different technologies were compared for lab-on-valve 3D printing. Printed test units have shown that stereolithography or digital light processing are satisfactory techniques for creating complex lab-on-valve units. The lab-on-valve system was composed of two columns, eight peripheral ports and a central port, and a coil integrating baffles to increase mixing...
Tipo: Text Palavras-chave: Stereolithography; Digital light processing; LOV-MSFIA; Natural waters.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00427/53874/54932.pdf
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Biomonitoring along the french coastline: could mercury isotopic composition indicate a temporal change in hg reaching the coastal zone? ArchiMer
Briant, Nicolas; Chouvelon, Tiphaine; Brach-papa, Christophe; Chiffoleau, Jean-francois; Savoye, Nicolas; Sonke, Jeroen; Knoery, Joel.
Mercury (Hg) is a natural element toxic to all living organisms. Its ocean biogeochemical cycle is dominated by atmospheric deposition, which human activities contribute to disrupt signi cantly, and to a lesser extent by riverine discharge. This element is bioamplifed and bioaccumulated in marine food webs. since mercury concentrations in some coastal animal species of high trophic level approach sanitary thresholds, understanding biogeochemical processes and mechanisms leading to these elevated Hg concentrations becomes important. The stable isotopic geochemistry of metal is indeed a very promising way to trace processes and transfers from one mercury biogeochemical reservoir to another (Sonke and Blum, 2013). The stable isotopes of Hg undergo...
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Ano: 2017 URL: http://archimer.ifremer.fr/doc/00394/50561/51253.pdf
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Chemical contaminants (trace metals, persistent organic pollutants) in albacore tuna from western Indian and south-eastern Atlantic Oceans: Trophic influence and potential as tracers of populations ArchiMer
Chouvelon, Tiphaine; Brach-papa, Christophe; Auger, Dominique; Bodin, Nathalie; Bruzac, Sandrine; Crochet, Sylvette; Degroote, Maxime; Hollanda, Stephanie J.; Hubert, Clarisse; Knoery, Joel; Munschy, Catherine; Puech, Alexis; Rozuel, Emmanuelle; Thomas, Bastien; West, Wendy; Bourjea, Jerome; Nikolic, Natacha.
Albacore tuna (Thunnus alalunga) is a highly commercial fish species harvested in the world's Oceans. Identifying the potential links between populations is one of the key tools that can improve the current management across fisheries areas. In addition to characterising populations' contamination state, chemical compounds can help refine foraging areas, individual flows and populations' structure, especially when combined with other intrinsic biogeochemical (trophic) markers such as carbon and nitrogen stable isotopes. This study investigated the bioaccumulation of seven selected trace metals – chromium, nickel, copper (Cu), zinc (Zn), cadmium (Cd), mercury (Hg) and lead – in the muscle of 443 albacore tunas, collected over two seasons and/or years in the...
Tipo: Text Palavras-chave: Top predator; Bioaccumulation; Inorganic elements; Organic contaminants; Stable isotopes; Intrinsic markers.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00384/49532/51152.pdf
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Effect of local hydroclimate on phytoplankton groups in the Charente estuary ArchiMer
Guesdon, Stephane; Stachowski-haberkorn, Sabine; Lambert, Christophe; Beker, Beatriz; Brach-papa, Christophe; Auger, Dominique; Bechemin, Christian.
This study aimed to describe seasonal variations of phytoplankton abundances in relation to the physical and chemical (nutrients and metals) environment under the influence of freshwater input in the Charente river estuary (Marennes-Oléron bay, France) over three years, from 2011 to 2014. Phytoplankton abundances were determined using microscopy and flow cytometry. Considering high frequency temperature and salinity data, breakpoints in each series led to the identification of two local hydroclimatic periods: the first (2011 and early 2012) being warmer and higher in salinity than the second (from spring 2012 to the beginning of 2014). A multiblock PLS analysis highlighted the significant contribution of the physical environment (temperature, salinity and...
Tipo: Text Palavras-chave: Hydroclimate; Estuary; Phytoplankton; Size composition; Nutrients; Trace metals.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00349/46005/45674.pdf
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Effets de l'hydroclimat local sur les groupes de phytoplancton dans l'estuaire de la Charente ArchiMer
Guesdon, Stephane; Stachowski-haberkorn, Sabine; Lambert, Christophe; Beker, Beatriz; Brach-papa, Christophe; Auger, Dominique; Bechemin, Christian.
Cette étude s’inscrit dans le cadre du projet TOPHYPAC (2011-2014) financé par le programme “Pesticides” du Ministère de l’Écologie, du Développement durable et de l’Énergie. Ce travail vise à décrire les variations saisonnières des abondances de phytoplancton en lien avec l'environnement physique et chimique (nutriments et métaux) de l'estuaire de la Charente de 2011 à 2014. À partir des données d'abondances de groupes phytoplanctoniques déterminés par microscopie et par cytométrie de flux, les contributions relatives des variables environnementales sur la dynamique du phytoplancton ont été évaluées : dans ce but, une analyse PLS multibloc a été réalisée. Celle-ci souligne une contribution importante de l'environnement physique (température, salinité et...
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Ano: 2016 URL: http://archimer.ifremer.fr/doc/00361/47173/47139.pdf
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Etudes sanitaires du cordon du Jaï et de l’Etang de Berre. Département des Bouches du Rhône ArchiMer
Marco-miralles, Francoise; Brach-papa, Christophe.
Suite à la demande d’exploitation des zones du Cordon du Jaï et de l’étang de Berre par les professionnels, la Direction Départementale des Territoires et de la Mer des Bouches du Rhône (DDTM 13) a sollicité l’Ifremer pour la réalisation d’une étude de zone en vue du classement des zones de production de coquillages pour le groupe 2 (bivalves fouisseurs) « Etang de Berre » et « Cordon du Jaï ». En raison de la proximité géographique de ces deux zones, une seule étude a été réalisée par le Laboratoire Environnement Ressources Provence Azur Corse (LER-PAC). Celle-ci, menée en collaboration avec le GIPREB, a bénéficié d’un financement DGAL. La stratégie d’échantillonnage de cette étude de zone a été déterminée sur la base des résultats d’une étude de dossier...
Tipo: Text Palavras-chave: Etude sanitaire; REMI; Contamination bactériologique des coquillages; E. Coli; Contaminants chimiques; Cordon du Jaï; Etang de Berre; Bivalve fouisseur.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00390/50181/50803.pdf
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Etudes sanitaires du cordon du Jaï et de l'Etang de Berre. Département des Bouches du Rhône. Rapport provisoire. ArchiMer
Marco-miralles, Francoise; Brach-papa, Christophe.
Suite à la demande d’exploitation des zones du Cordon du Jaï et de l’Etang de Berre par les professionnels, la Direction Départementale des Territoires et de la Mer des Bouches du Rhône (DDTM 13) a sollicité l’Ifremer pour la réalisation d’une étude de zone en vue du classement des zones de production de coquillages pour le groupe 2 (bivalves fouisseurs) « Etang de Berre » et « Cordon du Jaï ». En raison de la proximité géographique de ces deux zones, une seule étude a été réalisée par le Laboratoire Environnement Ressources Provence Azur Corse (LER-PAC). Celle-ci, menée en collaboration avec le GIPREB, a bénéficié d’un financement DGAL. La stratégie d’échantillonnage de cette étude de zone a été déterminée sur la base des résultats d’une étude de dossier...
Tipo: Text Palavras-chave: Etude sanitaire; REMI; Contamination bactériologique des coquillages; E. Coli; Contaminants chimiques; Cordon du Jaï; Etang de Berre; Bivalve fouisseur.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00376/48712/49096.pdf
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Evaluation de la qualité des zones de production conchylicole. Région PACA (Provence-Alpes-Côte d' Azur). Edition 2017 ArchiMer
Marco-miralles, Francoise; Brach-papa, Christophe.
Après un rappel des objectifs, du fonctionnement et de la méthode d’interprétation des résultats du réseau de contrôle microbiologique REMI, ce rapport effectue un bilan national et décrit le programme annuel de la Région PACA (Provence-Alpes-Côte d’Azur). Il présente l’ensemble des résultats obtenus, en particulier l’estimation de la qualité des zones de production de coquillages classées et l’évolution de leur qualité.
Tipo: Text Palavras-chave: REMI; E. Coli; Contamination bactériologique des coquillages; Classement sanitaire des zones de production; Région PACA (Provence-Alpes-Côte d’Azur)..
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00388/49967/50543.pdf
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Evaluation de la qualité des zones de production conchylicoles . Départements des Bouches du Rhône, du Var et de la Haute Corse. Edition 2019 ArchiMer
Marco-miralles, Francoise; Brach-papa, Christophe.
Après un rappel des objectifs, du fonctionnement et de la méthode d’interprétation des résultats du réseau de contrôle microbiologique REMI, ce rapport effectue un bilan national et décrit le programme annuel des départements des Bouches-du-Rhône, du Var et de la Haute-Corse. Il présente l’ensemble des résultats obtenus, en particulier l’estimation de la qualité des zones de production de coquillages classées et l’évolution de leur qualité pour la période 2016-2018.
Tipo: Text Palavras-chave: REMI; E. coli; Contamination bactériologique des coquillages; Classement sanitaire des zones de production; Région PACA (Provence-Alpes-Côte d’Azur)..
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00494/60524/63987.pdf
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Evidencing the Impact of Coastal Contaminated Sediments on Mussels Through Pb Stable Isotopes Composition ArchiMer
Huy Dang, Duc; Schafer, Jörg; Brach-papa, Christophe; Lenoble, Veronique; Durrieu, Gael; Dutruch, Lionel; Chiffoleau, Jean-francois; Gonzalez, Jean-louis; Blanc, Gerard; Mullot, Jean-ulrich; Mounier, Stephane; Garnier, Cedric.
Heavily contaminated sediments are a serious concern for ecosystem quality, especially in coastal areas, where vulnerability is high due to intense anthropogenic pressure. Surface sediments (54 stations), 50 cm interface cores (five specific stations), river particles, coal and bulk Pb plate from past French Navy activities, seawater and mussels were collected in Toulon Bay (NW Mediterranean Sea). Lead content and Pb stable isotope composition have evidenced the direct impact of sediment pollution stock on both the water column quality and the living organisms, through the specific Pb isotopic signature in these considered compartments. The history of pollution events including past and present contaminant dispersion in Toulon Bay were also demonstrated by...
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Ano: 2015 URL: http://archimer.ifremer.fr/doc/00288/39884/38624.pdf
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Expertise de l'Ifremer sur la contamination significative historique en milieu marin, en particulier par des métaux toxiques tels que le mercure et l'arsenic par la société Alteo ArchiMer
Dreves, Luc; Amouroux, Isabelle; Gonzalez, Jean-louis; Knoery, Joel; Andral, Bruno; Chiffoleau, Jean-francois; Brach-papa, Christophe; Claisse, Didier; Burgeot, Thierry.
Expertise réalisée dans le cadre de la saisine, datée du 10 octobre 2014, auprès du PDG de l'Ifremer de la Ministre de l’Écologie, du Développement Durable et de l’Énergie, sur la demande de poursuite de rejet d'effluents industriels liquides en Méditerranée
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Ano: 2015 URL: http://archimer.ifremer.fr/doc/00260/37099/35615.pdf
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Growth, condition and metal concentration in juveniles of two Diplodus species in ports ArchiMer
Bouchoucha, Marc; Brach-papa, Christophe; Gonzalez, Jean-louis; Lenfant, P.; Darnaude, A. M..
High abundances of juvenile fish in certain ports suggest they might provide alternative nursery habitats for several species. To further investigate this possibility, post-settlement growth, metal uptake and body condition were estimated in 127 juveniles of two seabream species, collected in 2014–15, inside and outside the highly polluted ports of the Bay of Toulon. This showed that differences in local pollution levels (here in Hg, Cu, Pb and Zn) are not consistently mirrored within fish flesh. Muscle metal concentrations, below sanitary thresholds for both species, were higher in ports for Cu, Pb and V only. Otherwise, fish muscle composition principally differed by species or by year. Juvenile growth and condition were equivalent at all sites. Higher...
Tipo: Text Palavras-chave: Coastal areas; Nursery habitats; Fish; Contamination; Otoliths.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00408/51932/52609.pdf
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Insights from the spatial and temporal distributions of mercury species and isotopes in bivalves from the french coastline ArchiMer
Briant, Nicolas; Knoery, Joel; Chouvelon, Tiphaine; Brach-papa, Christophe; Chiffoleau, Jean-francois; Savoye, Nicolas; Sonke, Jeroen.
Mercury cycles between atmosphere, terrestrial and aquatic reservoirs through a complex combination of transport and transformation processes, until it is buried in oceanic or terrestrial sediments. Monomethylmercury is the main species bioaccumulated and bioampli ed in the food chain. Knowledge of the origin (continental, oceanicorlocalsediment)ofthisspeciesforthelittoralenvironnment can still be improved. This study focuses on ~200 samples of bivalves (mussels: Mytilus edulis and Mytilus galloprovincialis and oysters: Crassostrea gigas and Isognomon alatus) from ~80 stations along the French coast. The goals of this study were i) to describe Hg levels, speciation and isotopic composition in various bioindicator bivalves from the French coastline, and ii)...
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Ano: 2017 URL: http://archimer.ifremer.fr/doc/00394/50562/51254.pdf
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Integrated monitoring of chemicals and their effects on four sentinel species, Limanda limanda, Platichthys flesus, Nucella lapillus and Mytilus sp, in Seine Bay: A key step towards applying biological effects to monitoring ArchiMer
Burgeot, Thierry; Akcha, Farida; Menard, Dominique; Robinson, Craig; Loizeau, Veronique; Brach-papa, Christophe; Martinez-gomez, Concepcion; Le Goff, Jeremie; Budzinski, Helene; Le Menach, Karine; Cachot, Jerome; Minier, Christophe; Broeg, Katja; Hylland, Ketil.
The International workshop on Integrated Assessment of CONtaminants impacts on the North sea (ICON) provided a framework to validate the application of chemical and biological interpretation thresholds (BACs and EACs) in the Seine Bay in France. Bioassays (oyster larval anomalies, Corophium arenarium toxicity assay and DR Calux) for sediment and biomarkers: ethoxyresorufin-O-deethylase (EROD) activity, acetylcholinesterase (AChE) activity, lysosomal membrane stability (LMS), DNA strand breaks using the comet assay, DNA adducts, micronucleus (MN), PAH metabolites, intersex and fish external pathologies were analyzed in four marine sentinel species (Platichthys flesus, Limanda limanda, Mytilus sp. and Nucella lapilus). Polycyclic aromatic hydrocarbons...
Tipo: Text Palavras-chave: Biomarkers; Bioassays; Chemical contamination; Integrated monitoring in chemistry and biology; Local study; Large geographical scale.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00357/46789/46655.pdf
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Mercury in organisms from the Northwestern Mediterranean slope: Importance of food sources ArchiMer
Cresson, Pierre; Fabri, Marie-claire; Bouchoucha, Marc; Brach-papa, Christophe; Chavanon, Fabienne; Jadaud, Angelique; Knoery, Joel; Marco-miralles, Francoise; Cossa, D..
Mercury (Hg) is a global threat for marine ecosystems, especially within the Mediterranean Sea. The concern is higher for deep-sea organisms, as the Hg concentration in their tissues is commonly high. To assess the influence of food supply at two trophic levels, total Hg concentrations and carbon and nitrogen stable isotope ratios were determined in 7 species (4 teleosts, 2 sharks, and 1 crustacean) sampled on the upper part of the continental slope of the Gulf of Lions (Northwestern Mediterranean Sea), at depths between 284 and 816 m. Mean Hg concentrations ranged from 1.30 ± 0.61 to 7.13 ± 7.09 μg g− 1 dry mass, with maximum values observed for small-spotted catshark Scyliorhinus canicula. For all species except blue whiting Micromesistius poutassou, Hg...
Tipo: Text Palavras-chave: Continental slope; Trophic webs; Depth; Teleosts; Sharks; Stable isotopes.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00206/31759/30693.pdf
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Monitoring of Pb Contamination in Loire Estuary: Trends, Distribution and Isotopic composition ArchiMer
Brach-papa, Christophe; Chiffoleau, Jean-francois; Knoery, Joel; Chouvelon, Tiphaine; Auger, Dominique; Bretaudeau-sanjuan, Jane; Crochet, Sylvette; Rozuel, Emmanuelle; Thomas, Bastien; Vasileva, Emilia; Oriana, Anna Maria.
The Loire River is one of the largest river systems in Western Europe and a major source of continental inputs to the marine environment in the Bay of Biscay. Its catchment area drains agricultural and industrial zones and its estuary is increasingly urbanized. Even if the Loire River is not considered as a highly polluted system, studies have shown estuarine Pb contamination due to industrial inputs and combustion of leaded gasoline until the mid 1990’s. A retrospective study, based on the analysis (Pb levels and isotopic composition) of mussel samples collected by the French mussel watch program (RNO/ROCCH) has highlighted this contamination and its trend between 1985-2005 (Couture et al., 2010). This poster furthers the work initiated by Couture et al....
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Ano: 2014 URL: http://archimer.ifremer.fr/doc/00188/29958/28404.pdf
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Oligotrophy as a major driver of mercury bioaccumulation in medium-to high-trophic level consumers: A marine ecosystem-comparative study ArchiMer
Chouvelon, Tiphaine; Cresson, Pierre; Bouchoucha, Marc; Brach-papa, Christophe; Bustamante, Paco; Crochet, Sylvette; Marco-miralles, Francoise; Thomas, Bastien; Knoery, Joel.
Mercury (Hg) is a global contaminant of environmental concern. Numerous factors influencing its bioaccumulation in marine organisms have already been described at both individual and species levels (e.g., size or age, habitat, trophic level). However, few studies have compared the trophic characteristics of ecosystems to explain underlying mechanisms of differences in Hg bioaccumulation and biomagnification among food webs and systems. The present study aimed at investigating the potential primary role of the trophic status of systems on Hg bioaccumulation and biomagnification in temperate marine food webs, as shown by their medium-to high-trophic level consumers. It used data from samples collected at the shelf-edge (i.e. offshore organisms) in two...
Tipo: Text Palavras-chave: Biomagnifying metal; Bioaccumulation; Trophic status; Ecosystem productivity; Temperate systems.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00410/52111/52936.pdf
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Particles transformation in estuaries: Fe, Mn and REE signatures through the Loire Estuary ArchiMer
Thibault De Chanvalon, A.; Metzger, E.; Mouret, A.; Knoery, Joel; Chiffoleau, Jean-francois; Brach-papa, Christophe.
During their transfer across estuaries, particles endure numerous cycles of deposition-resuspension accompanied by several redox oscillations. These oscillations are likely to modify the particles content of redox sensitive metals such as Fe, Mn and two rare earth elements (REE): Ce and Eu. The present paper focuses on the fate of particles originating from the Loire Estuary by the study of chemical composition changes of both total and ascorbate-extracted phases. Transformations of particles buried in the sediment are estimated from sediment cores sampled in an estuarine intertidal mudflat Changes affecting particles that are transferred to the ocean are evaluated by comparing the composition of suspended particulate matter (SPM) from riverine time series...
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Ano: 2016 URL: http://archimer.ifremer.fr/doc/00367/47848/47935.pdf
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Projet GERMON. Structure génétique et migration du thon Germon ArchiMer
Nikolic, Natacha; Puech, Alexis; Chouvelon, Tiphaine; Munschy, Catherine; Bodin, Nathalie; Brach-papa, Christophe; Potier, Michel; West, Wendy; Knoery, Joel; Zudaire, Iker; Dhurmeea, Zahirah; Degroote, Maxime; Cedras, Maria; Evano, Hugues; Bourjea, Jerome.
The GERMON project had several aims i) to understand the populations’ structure between albacore tuna southwest of the Indian Ocean and southeast Atlantic, ii) to determine the origin of juveniles observed in South Africa iii) to improve the understanding of the biology field (Size/Size and Size/Weight; reproduction and feeding area; trophic linkages) and iv) to initiate work on chemical analyzes and adaptation of the albacore species to its environment. These aims have been held and the results allow a better understanding of the management albacore. A general summary of results is presented in Part 9.
Tipo: Text Palavras-chave: Germon; Thunnus alalunga; Génétique; Stock; Structure; Connectivité; Chimie; Reproduction; Alimentation; Habitat; Albacore; Thunnus alalunga; Genetic; Stock; Structure; Connectivity; Chemical; Reproduction; Feeding behavior; Habitat.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00293/40461/39152.pdf
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