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| Mahe, Kelig; Sevin, Karine; Petursdottir, Groa; Finnbogadottir, Gudrun; Wilhelms, Ines; Beußel, Friederike; Bland, Barbara; Solbakken, Lisbet; Seim, Silje E.; Holm, Else; Mjanger, Hildegunn; Senneset, Harald; Ottesen, Merete V.; Skadal, Janicke. |
| The ICES Planning Group on Commercial Catch, Discards and Biological Sampling (PGCCDBS) identified the need of a Saithe (Polliachius virens) otolith exchange to take place in 2013. It was the second exchange after that’s of 2008. The IFREMER institute coordinated this exchange. A total of 295 fish was sampled from the Barent sea (ICES area : IIa, N=24), from the North Sea (ICES area : IV, N=34) and from the Western Scotland (ICES area : VIa, N=237). The length range of the fish was between 37 and 96 cm, with mean 60 cm. 13 readers from 5 countries (France, Germany, Iceland, Sweden & Norway) were participated. Mean precision of age estimate for individual fish were Coefficient of Variation (CV) of 6.2% and percent agreement to modal age of 85.9. Among... |
| Tipo: Text |
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| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00185/29595/27962.pdf |
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| Mahe, Kelig; Penil, Caroline; Sevin, Karine. |
| Ce rapport synthétise l'analyse des otolithes d'anguilles prélevés en 2011 dans le cadre du suivi des captures de cette espèce inscrite à la DCF (Data Collection Framework règlement CE n°199/2008 du conseil du 25 février 2008). 140 anguilles ont été prélevées entre fin juillet et fin octobre 2011 dans la Loire, la Dordogne et la Gironde. La relation entre la longueur totale (Lt) et le poids total (Wt) des anguilles prélevées en 2011 dans toute la France (Loire, Garonne et Dordogne) est du type Wt = 5.10-7.Lt3,21. Ainsi, les anguilles présentent une allométrie majorante (b=3.21) c’est-à-dire que le poids croit plus vite que la longueur. L'institut IFREMER à travers le pôle national de Sclérochronologie à Boulogne-sur-mer a préparé et interprété les... |
| Tipo: Text |
Palavras-chave: Anguille; Otolithe; Age; Dordogne; Garonne; Loire. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00310/42080/41383.pdf |
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| Mahe, Kelig; Cochard, Marie-laure; Quero, Jean-claude; Sevin, Karine; Bailly, Nicolas; Tetard, Alain. |
| Premier signalement de Epinephelus marginatus (Serranidae: Epinephelinae) en Manche orientale. Le premier signalement du mérou noir Epinephelus marginatus (Lowe, 1834) en Manche orientale est rapporté. Un spécimen a été capturé le 10 juin 2011 en baie de Seine. Il mesurait 66 cm et pesait 5,5 kg. D'après l'étude des écailles, il s'agissait d'une femelle adulte âgée de 12 ans qui n'avait pas effectué sa croissance dans la Manche, ce qui confirme le fait d'une observation occasionnelle et non le signe d'une extension d'aire de répartition avec une population établie. |
| Tipo: Text |
Palavras-chave: Serranidae; Epinephelus marginatus; Atlantic Ocean; Eastern English Channel; First record. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00113/22395/20097.pdf |
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| Cresson, Pierre; Fabri, Marie-claire; Miralles, Francoise Marco; Dufour, Jean-louis; Elleboode, Romain; Sevin, Karine; Mahe, Kelig; Bouchoucha, Marc. |
| Despite being generally located far from contamination sources, deep marine ecosystems are impacted by chemicals like PCB. The PCB contamination in five fish and shark species collected in the continental slope of the Gulf of Lions (NW Mediterranean Sea) was measured, with a special focus on intra- and interspecific variability and on the driving factors. Significant differences occurred between species. Higher values were measured in Scyliorhinus canicula, Galeus melastomus and Helicolenus dactylopterus and lower values in Phycis blennoides and Lepidorhombus boscii. These differences might be explained by specific abilities to accumulate and eliminate contaminant, mostly through cytochrome P450 pathway. Interindividual variation was also high and no... |
| Tipo: Text |
Palavras-chave: Bioaccumulation; Continental slope; Gulf of Lions; PCB. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00313/42421/41790.pdf |
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| Mahe, Kelig; Holmes, Alison; Huet, Jerome; Sevin, Karine; Elleboode, Romain. |
| For seabass (Dicentrarchus labrax), Otolith and Scale Exchange Scheme 2011 was the first exchange. A total of 155 fish from Eastern English Channel (ICES area : VIId) was sampled on-board French research vessels (Gwen-Drez and Thalassa) during 2 international surveys (Channel Ground Fish Survey and International Bottom Trawl Survey). The length range of the fish was between 17 and 74 cm, with a mean length at 46.99 cm. For each fish, the Sagittae otoliths and few scales were used to compare the age estimation between both calcified pieces. 4 readers were participated from UK England (1 reader) and France (3 readers). Only images were used during this exchange. There were noted by the readers that it was very difficult to obtain an image of the scale with... |
| Tipo: Text |
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| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00063/17433/14940.pdf |
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| Bellamy, Elise; Sevin, Karine; Penil, Caroline; Mahe, Kelig. |
| Ce rapport synthétise l'analyse des otolithes d'anguilles prélevés en 2013 dans le cadre du suivi des captures de cette espèce inscrite à la DCF (Data Collection Framework règlement CE n°199/2008 du conseil du 25 février 2008). 240 anguilles ont été prélevées en septembre/octobre 2013 dans le lac de Grand Lieu, la Dordogne et la Garonne. La relation entre la longueur totale (Lt) et le poids total (W) des anguilles prélevées en 2013 dans toute la France est du type W = 3.10-7.Lt3,273. Ainsi, les anguilles présentent une allométrie majorante (b=3,273) c’est-à-dire que le poids croit plus vite que la longueur. L'institut IFREMER à travers le pôle national de Sclérochronologie à Boulogne-sur-mer a préparé et interprété les otolithes, pièces calcifiées de... |
| Tipo: Text |
Palavras-chave: Anguille; Otolithe; Age; Dordogne; Garonne; Lac de Grand Lieu. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00310/42081/41384.pdf |
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| Mahe, Kelig; Sevin, Karine; Moerman, Martine; Holmes, Alison. |
| The ICES Planning Group on Commercial Catch, Discards and Biological Sampling (PGCCDBS) identified the need of a seabass Dicentrarchus labrax) otolith exchange to take place in 2013. It was the second exchange after that’s of 2011. The IFREMER institute coordinated this exchange. A total of 223 fish from the bay of Biscay (ICES area : VIII, N=29), the Eastern English Channel (ICES area : VIId, N=149) and the North Sea (ICES area : IV, N=45) was sampled onboard French research vessels (Gwen-Drez and Thalassa) during 3 international surveys (EVHOE, CGFS and IBTS). The length range of the fish was between 26 and 71 cm, with mean 42.3 cm. For each fish, the Sagittae otoliths and few scales were used to compare the age estimation between the both calcified... |
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| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00185/29596/27963.pdf |
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