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| Registros recuperados: 135 | |
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| Ider, D.; Ramdane, Z.; Mahe, Kelig; Dufour, Jean-louis; Bacha, M.; Amara, R.. |
| Otolith-shape analysis was examined to determine its utility for biological stock identification of the bogue Boops boops along the Algerian coast of the Mediterranean Sea. The outlines of 179 sagittal otolith pairs from fish collected at three locations (Oran, Bejaia and Annaba) between 2013 and 2016 were digitised and analysed for shape variation by elliptical Fourier analysis. Potential confounding sources of variation (fish length, age and sex, and left or right otolith position) were examined and accounted for in the analyses before interpretation of spatial differences in distribution of the stock. Redundancy analysis showed a significant difference between the left and right otoliths. No difference was correlated with sex and age, but fish length... |
| Tipo: Text |
Palavras-chave: Biological stocks; Elliptical Fourier analysis; Image analysis; Linear discriminant analysis; Marine fish; Principal components analysis; Sex differences. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00409/52075/52855.pdf |
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| Bellamy, Elise; Mahe, Kelig; De Rafelis, Marc; Lartaud, Franck. |
| Cockle (Cerastoderma edule) growth has not been studied a lot yet and the current approach of counting external ridges in order to make age estimation is limited. Nevertheless, growth is a key parameter for monitoring bivalves populations, which are heavily exploited in French estuaries. The Bay of Somme which is located in the eastern Channel in the north of France, is the first French field of cockles (Cerastoderma edule). In order to improve stock management, it is necessary to increase our knowledge of this species. This study is looking at the growth of the common cockle. In this way, recapture of shells previously marked under calcein marker and then breed in natural conditions in the Bay of Somme, was performed in order to determine the shell... |
| Tipo: Text |
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| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00011/12268/9053.pdf |
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| Caill-milly, Nathalie; Bellamy, Elise; D'Amico, Franck; Mahe, Kelig. |
| Arcachon Bay is the first French field of Manila clam (Ruditapes philippinarum) with an annual production comprised between 500 and 1000 tons in the recent years. In order to improve stock management,an in situ experimentation of chemical marking, using calcein, has been undertaken to validate the periodicity of increment deposition and the optimal conditions of chemical marking in Arcachon Bay. Later on, daily growth rates will be analysed regarding to environmental parameters to increase our knowledge on this species.Manila clam were collected and divided into groups of 80 animals (including control group) which size distribution spread over a large range. Identified groups were marked by immersion in a calcein solution (CAS 1461-15-0), using different... |
| Tipo: Text |
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| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00039/15066/12401.pdf |
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| Mahe, Kelig; Duhamel, Erwan; Chantre, Celina; Bled Defruit, Geoffrey. |
| Cet atelier 2018 a été mis en place pour intercalibrer les estimations d'âge des anchois et des sardines en Atlantique entre Erwan Duhamel qui est le lecteur de ces espèces du golfe de Gascogne et Célina Chantre et Geoffrey Bled Defruit du pôle national de Sclérochronologie du laboratoire Ressources Halieutiques de Boulogne sur mer qui vont commencer à estimer l'âge de ces petits pélagiques dans le golfe de Gascogne. L'objectif est d'abord de calibrer les estimations d’âge pour ces 2 espèces de petits pélagiques dans le golfe de Gascogne et de revoir les moyens pour réaliser les images en mer lors de la campagne Pelgas et à terre en laboratoire. Cette intercalibration est basée sur la lecture d’images : 136 otolithes d'anchois et 140 otolithes de sardine... |
| Tipo: Text |
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| Ano: 2018 |
URL: http://archimer.ifremer.fr/doc/00434/54544/55913.pdf |
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| Mahe, Kelig; Elleboode, Romain; Øverbø Hansen, Hege; Román Marcote, Esther; Marull Hernández, Eva; Teruel Gómez, Josefina; Etherton, Mark. |
| The roundnose grenadier (Coryphaenoides rupestris) Otolith Exchange 2011 was a second one after the exchange of 2007. It was composed by 2 sets of otoliths from VIa(western Scotland ; n=64, the same as the exchange 2007 used one) sampled from January to June 2006 and otoliths from IIIa (Skagerrak ; n=63) sampled from January 2011. 6 readers participated from Spain (3 readers), UK England (1 reader), Norway (1 reader) and France (1 reader). Only images of otoliths sections were used during this exchange. The set of otoliths from VIa showed Coefficient of Variation of 14.9% and percent agreement to modal age of 29.3%. The set of otoliths from IIIa showed Coefficient of Variation of 22.6% and percent agreement to modal age of 30.7%. These results from both... |
| Tipo: Text |
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| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00063/17436/14942.pdf |
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| Romdhani, Ahlem; Ktari, Mohamed-hedi; Dufour, Jean-louis; Mahe, Kelig; Francour, Patrice. |
| Background. The greater forkbeard, Phycis blennoides (Brünnich, 1768), is a gadiform species, which has economical value and its population is dwelling in a 60–800 m depth range throughout the Atlantic and the Mediterranean. Along African north coast, there is a lack of information about the biology (age, growth, sex-ratio) of this species. This study provides the first data on population parameters of P. blennoides in Tunisia. Materials and Methods. Specimens of Phycis blennoides were collected from the landings of the artisanal fisheries between September 2007 and June 2010. The length–weight relations were determined according to the allometric equation: W = aTLb. Growth parameters were estimated using the von Bertalanffy growth equation. Results.... |
| Tipo: Text |
Palavras-chave: Otolith; Biological traits; Length-weight relation; Von Bertalanffy growth function. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00324/43532/43077.pdf |
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| Mauffret, Aourell; Wessel, Nathalie; Roubeix, Vincent; Akcha, Farida; Chouvelon, Tiphaine; Aminot, Yann; Munschy, Catherine; Couteau, Jérôme; Briaudeau, Tifanie; Izagirre, Urtzi; Mahe, Kelig; Godfrin, Yoann; Pollono, Charles; Moisan, Karine; Olivier, Nathalie; Bely, Nadege; Bruzac, Sandrine; Crochet, Sylvette; Thomas, Bastien; Sireau, Teddy; Burgeot, Thierry. |
| Le dispositif « SELI » est mis en place depuis 2016 pour acquérir des données sur les effets biologiques intégrateurs de la contamination chimique chez des organismes marins (poissons et bivalves) et ainsi renseigner le critère 2 du descripteur 8 de la DCSMM (Le niveau de concentration des contaminants ne provoque pas d’effets dus à la pollution). Le présent rapport concerne le volet SELIseine. Des poissons plats (194 soles, flets et limandes) ont été prélevés en septembre 2018 sur le N/O Antéa, et des moules ont été prélevées en février 2019 sur 6 stations dans le cadre du suivi ROCCH MV suivant le protocole de la convention OSPAR (2012). Les biomarqueurs suivis chez ces organismes couvrent plusieurs types d’effets toxiques (reprotoxicité, génotoxicité,... |
| Tipo: Text |
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| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00688/80024/83012.pdf |
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| Elleboode, Romain; Oudard, Clemence; Bellamy, Elise; Penil, Caroline; Mahe, Kelig. |
| Ce rapport synthétise l'analyse des otolithes d'anguilles prélevés en 2014 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). 212 anguilles ont été prélevées de septembre à décembre 2014 dans le lac de Grand Lieu (n=49), la Loire fluviale (n=51), la Dordogne (n=59) et la Garonne (n=53). La relation entre la longueur totale (Lt) et le poids total (W) des anguilles prélevées en 2014 dans toute la France est du type W = 4.10-4.Lt3,41. Ainsi, les anguilles présentent une allométrie majorante (b=3,41) 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... |
| Tipo: Text |
Palavras-chave: Anguille; Otolithe; Age; Dordogne; Loire; Garonne; Lac de Grand Lieu. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00310/42082/41385.pdf |
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| Oudard, Clemence; Elleboode, Romain; Mahe, Kelig. |
| L’acquisition des images peut se réaliser de façon « manuelle » (loupe binoculaire, microscope) ou de façon « automatique » à savoir à l’aide d’une platine motorisée ou d’un scanner selon le type de pièces calcifiées traitées. L’utilisation d’acquisition d’images par scanner montre un avantage de temps et de standardisation sur la méthode d’acquisition « manuelle » pour la prise d’images et la numérisation de pièces calcifiées entières fortement contrastées (analyse de forme sur otolithes entiers par exemple). Lors de l’utilisation d’un scanner, les paramètres de réglages d’acquisition et de traitement doivent être testés avant d’être appliqués de façon identique à l’ensemble des pièces calcifiées étudiées. De plus, ce mode d’acquisition assure un gain de... |
| Tipo: Text |
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| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00063/17419/14926.pdf |
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| Mahe, Kelig; Bellamy, Elise; D'Amico, Franck; Caill-milly, Nathalie. |
| Arcachon Bay, in the southern Bay of Biscay, is the first French production area of Manila clam (Ruditapes philippinarum) with an annual commercial fisheries production around 400 tons in recent years. This bivalve mollusc was introduced into the bay in the 1980s for aquaculture purpose and quickly succeeded in natural settlement so that its high market value led to the progressive establishment of a perennial fishery from the mid-1990s. Local management plans applied to this species are based on a licensing system for the commercial, protected fishery areas and days of prohibited fishing for both commercial and recreational fishermen. A minimum catch size is also prescribed by European regulation, and so growth rates are an important matter in this... |
| Tipo: Text |
Palavras-chave: Calcein; In-situ marking; Ruditapes philippinarum; Bivalve mollusks; Fisheries. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00665/77693/79770.pdf |
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| Mahe, Kelig; Jurado, A; Garcia Guerreiro, A; Massaro, A; Dueñas, C; Lopez, E; Mullins, E; Lanteri, L; Ferreira, Mj; Elleboode, Romain; Mannini, A; Antolinez, A; Delfs, G; Casciaro, L; O'Cuaig, M; Torres, P; Dijkman, A; Bellamy, Elise; Eriksen, K; Carbonara, P. |
| The ICES Planning Group on Commercial Catch, Discards and Biological Sampling (PGCCDBS) identified the need of the Horse Mackerel, Mediterranean Horse Mackerel and Blue Jack Mackerel (Trachurus trachurus, T. mediterreaneus and T. picturatus) otolith exchange to take place in 2015. It was the forth exchange. The IFREMER institute and the COISPA Tecnologia & Ricerca, Italy, coordinated this exchange. A total of 550 fish was sampled from the Atlantic Ocean (Eastern Channel, Celtic Sea, Bay of Biscay, Azores, Portuguese waters and Tenerife) and the Mediterranean Sea (Alboran Sea, South Adriatic Sea and Ligurian Sea). 19 readers from 8 countries (France, Germany, Spain, Ireland, Italy, Portugal, Netherlands and Norway) participated to this exchange. Among... |
| Tipo: Text |
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| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00274/38499/36971.pdf |
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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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| Boufersaoui, Samira; Kassar, Abderrahmane; Mokrane, Zakia; Elleboode, Romain; Mahe, Kelig. |
| Background. Striped seabream, Lithognathus mormyrus (Linnaeus, 1758), is a bony fish, which has a high economic value on the Algerian coast. Because of the increasing fishing pressure, however, a close monitoring is recommended. The information about the biology of this species, occurring in the south-western Mediterranean Sea and especially in the north African coast, is very limited. The presently reported study provides new estimated data on age and growth parameters of striped seabream in Algeria. Materials and methods. A total of 449 specimens of L. mormyrus were sampled for 2 years (January 2013 to December 2014) from the commercial fishery in the central part of the Algerian coast. The samples were collected monthly. The fish ranged in size from... |
| Tipo: Text |
Palavras-chave: Lithognathus mormyrus; Otolith; Age; Growth; Algerian coast; Mediterranean Sea. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00473/58448/61028.pdf |
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| Delpech, Jean-paul; Mahe, Kelig; Mehault, Sonia; Rostiaux, Emilie; Biais, Gerard; Coppin, Franck; Vaz, Sandrine. |
| This report is a result of a contract between Ifremer and the French Ministry of Industry. The aim was to map the distribution of the fisheries resources from french scientific surveys. Two areas have been selected: - the "Eastern Channel" area, including 7 administrative departments : Nord, Pas-de-Calais, Somme, Seine-Maritime, Eure, Calvados and Manche. - the "Loire-Gironde" area, including 4 administrative departments : Loire-Atlantique, Vendée, Charente-Maritime and Gironde. |
| Tipo: Text |
Palavras-chave: Bay of Biscay; Eastern Channel; Juvenile; Adult; Abundance index; Specific richness; Mapping; Fisheries; Scientific survey; Golfe de Gascogne; Manche est; Juvénile; Adulte; Indice d'abondance; Richesse spécifique; Cartographie; Campagne halieutique. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/rapport-6642.pdf |
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| Evano, Hugues; Metral, Luisa; Brisset, Blandine; Bourjea, Jerome; Nikolic, Natacha; Mahe, Kelig. |
| Ce guide présente les modes et règles de prélèvement puis de stockage des otolithes de grands pélagiques (thons et espadons). Ils ont été mis en place dans le cadre de projets de recherche comme « Germon » (http://wwz.ifremer.fr/lareunion/Les-projets/GERMON-en-cours), « IOSSS-Espadon » (http://wwz.ifremer.fr/lareunion/Les-projets/IOSSS-ESPADON) et «thon rouge (ICCAT-GBYP) » et dans le cadre de réseaux de surveillance coordonnés au niveau international, en particulier au sein du règlement européen sur la collecte des données halieutiques (DCMAP, Data Collection Multi Annual Programme). Ce guide a pour but de standardiser les prélèvements d’otolithes effectués à l'Ifremer sur ces grands pélagiques. Il reprend et complète la synthèse française des procédures... |
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| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00212/32318/30767.pdf |
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| Elleboode, Romain; Mahe, Kelig. |
| Le pôle de Sclérochronologie de l'IFREMER de Boulogne-sur-mer a réalisé une étude de scalimétrie d'espèces de poissons d'eau douce : Brème, Chevaine, Carpe, Brochet, Barbeau, Sandre, Gardon, Perche. Des essais d’interprétation des écailles ont été réalisés sur chacune des espèces et ce rapport présente les images numériques des estimations d'âge ainsi obtenues. |
| Tipo: Text |
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| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/00180/29127/27533.pdf |
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| Registros recuperados: 135 | |
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