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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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| 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... |
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| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00063/17433/14940.pdf |
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