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| Registros recuperados: 135 | |
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| Elleboode, Romain; Mahe, Kelig. |
| L’équipe de l’IFREMER du centre de Polynésie et celle de la Cellule Innovation et Valorisation de la Direction des Ressources Marines de Polynésie Française mènent des travaux afin de maîtriser la zootechnie de l’élevage du Platax (Platax orbicularis) en lagon. Des connaissances sur la physiologie de la reproduction s’est faite sur ces animaux, mais aucune information n’est disponible quant à l’évolution de la productivité de ces animaux en fonction de leur croissance (pas de données d’âge). Le pôle national de sclérochronologie de l’Ifremer de Boulogne-sur-Mer a été sollicité pour réaliser une étude de faisabilité de l’estimation de l’âge de cette espèce. Pour cela, dans un premier temps des techniques de préparation ont été utilisées sur des otolithes de... |
| Tipo: Text |
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| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00180/29158/27563.pdf |
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| Bourjea, Jerome; Mille, Tiphaine; Evano, Hugues; Mahe, Kelig. |
| L’espadon (Xiphias gladius) de l’océan Indien est actuellement une ressource évaluée comme étant pleinement exploitée à l’échelle de cet océan, avec un risque de surexploitation dans le sud-ouest de l’océan Indien. Une précédente étude a permis de démontrer que les espadons de l’océan Indien ne formaient qu’une seule et même population génétique (conclusion du projet IOSSS – ESPADON). L’objectif de ce projet a été d’explorer la forme de 395 otolithes d’espadons collectés dans sept zones différentes de l’océan Indien pour identifier s’ils provenaient de stocks différents ou non. Cette étude a permis de tirer 5 conclusions principales : les otolithes gauche et droit de l’espadon sont significativement similaires. 1- il n’y a pas d’effet de la taille des... |
| Tipo: Text |
Palavras-chave: Espadon; Xiphias gladius; Otolithe; Descripteur de Fourier; Stock; Océan Indien; Forme. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00272/38324/36565.pdf |
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| Romdhani, Ahlem; Chater, Ines; Ktari, Mohamed Hédi; Dufour, Jean-louis; Mahe, Kelig. |
| The age of fish in a population is fundamental to most of the questions fishery biologists attempt to answer about that population. The aim of this study was to report the parameters of the weight-length relationship and to estimate the age and growth of Phycis phycis (Linnaeus, 1766) in Gulf of Tunis. A sample of 272 specimens of P. phycis was collected from the landings of the small-scale artisanal fisheries between September 2007 and June 2010. The total length (TL) ranged from 14 to 55.5cm and total weight (TW) from 45 to 1779g. Length-weight relationship were described by allometrically positive for the females (TW = 0.0083*TL3. 0703), males (TW= 0.0063*TL3.1471), and both sexes (TW= 0.0082*TL3. 0759). No significant differences were found between... |
| Tipo: Text |
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| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00117/22790/20592.pdf |
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| Guillaud, Emilie; Elleboode, Romain; Mahe, Kelig; Bearez, Philippe. |
| The fish remains sampled from archaeological sites are generally the result of human food refuse; therefore, the study of retrieved fish scales may provide reliable information on the season of capture and on paleoclimate and paleoenvironmental changes. Among Western European freshwater fishes, the grayling, Thymallus thymallus¸ has the most easily recognizable scales and is a commonly recovered species from Paleolithic contexts. This study, therefore, is based on the growth pattern analysis of modern and archaeological scales from grayling specimens. The modern specimens were collected monthly in France (n = 22), Switzerland (n = 16), Finland (n = 20) and Sweden (n = 10). Scale growth patterns were measured using numerical analysis to a high accuracy. The... |
| Tipo: Text |
Palavras-chave: France; Le Taillis des Coteaux; Marginal increment analysis; Scales; Scalimetry; Sclerochronology; Thymallus thymallus; Upper Paleolithic. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00379/48992/49436.pdf |
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| Mahe, Kelig; Elleboode, Romain; Persohn, Cecile; Dufour, Jean-louis. |
| Age and growth of lemon sole (Microstomus kitt) were determined from 115 specimens collected in the Celtic Sea and in the North Sea in 2006 and 2007. Total length is ranged from 11 to 44 cm, while total weight varied between 12 and 1040 g. Age estimation was based on otoliths readings. The oldest male and female were estimated to be 9 years old. The length–weight relationships parameters for lemon sole in the Celtic Sea and in the North Sea were W=0.0043*TL3.2860 and W=0.0062*TL3.1505 respectively. Weight including both sexes increased with positive allometric growth. The von Bertalanffy growth equation in the North Sea was fitted on the basis of mean length-at-age data resulting in parameters values of TL∞ = 36.44 cm (S.E. = 0.484), K = 0.187 /y (S.E. =... |
| Tipo: Text |
Palavras-chave: Lemon sole; Growth; Von Bertalanffy; Celtic Sea; North Sea. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00019/13024/10002.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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| Mahe, Kelig; Evano, Hugues; Mille, Tiphaine; Bourjea, Jerome. |
| Swordfish (Xiphias gladius) is an oceanic-pelagic species currently fully exploited by several fisheries in the Indian Ocean, with suspicion of overexploitation in the southwest, but without a clear understanding of the real stock structure within this Ocean. Population structure of the Indian stock was studied in the western Indian Ocean using 395 individual samples collected from 2009 to 2014. Sagittal otoliths of the fish have been removed and shape analysis performed on these calcified pieces. Otolith morphometrics data and normalized Elliptical Fourier Descriptors (EFDs) were then extracted automatically by the dedicated image-analysis system TNPC. Preliminary, side effect was tested by Redundancy analysis (RDA) combined to permutation tests on 91... |
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| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00220/33150/31633.pdf |
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| Mahe, Kelig; Aumond, Yoann; Rabhi, Khalef; Elleboode, Romain; Bellamy, Elise; Huet, Jerome; Gault, M.; Roos, David. |
| The ornate jobfish Pristipomoides argyrogrammicus Valenciennes 1832 occurs in the Indo-West Pacific Ocean, where it is harvested by small-scale coastal fisheries. Management of this species is hindered by lack of adequate biological data. We sampled a total of 113 individuals from the landings of local artisanal fishers on the island of Réunion (southwestern Indian Ocean), from March 2014 to March 2015. The relationships between two types of body length (total and standard length, cm) and total weight (g) were shown to be significant (p < 0.05). The length–weight relationship was described by a power function, with the scaling factor estimated to be 0.008 and the exponent 3.146. Age was determined using whole otoliths. The von Bertalanffy growth... |
| Tipo: Text |
Palavras-chave: Age estimate; General linear model; Lutjanidae; Modelled age; Morphometric parameters; Otolith morphometry; Reading precision. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00399/51017/51863.pdf |
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| Mahe, Kelig; Foucher, Eric; Elleboode, Romain; Iglesias, Samuel; Tetard, Alain. |
| The family Dactylopteridae comprises seven valid species mostly distributed in tropical and subtropical seas (Eschmeyer and Fong, 2013). The flying gurnard Dactylopterus volitans (Linnaeus, 1758) is present in the Eastern Atlantic, apparently from the North Sea to Angola, including the entire Mediterranean Sea and the Azores, and in the Western Atlantic, from Canada to Argentina (Froese and Pauly, 2013). It is the only species of the family Dactylopteridae present in the European Atlantic (from 36 degrees N to 66 degrees N) (Roux, 1986; Quero et al., 2003). The point map of D. volitans given in FishBase (Froese and Pauly, 2013) showed a single record in the Bay of Biscay and a single record point in the Southern North Sea, although the latter seems to be... |
| Tipo: Text |
Palavras-chave: Dactylopteridae; Dactylopterus volitans; Atlantic Ocean; Eastern English Channel; First record. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00176/28747/27244.pdf |
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| Mille, Tiphaine; Mahe, Kelig; Cachera, Marie; Villanueva, Ching-maria; De Pontual, Helene; Ernande, Bruno. |
| Previous studies have shown that food amount influence fish otolith structure, opacity and shape and that diet composition has an effect on otolith chemical composition. This study investigated the potential correlation between diet and otolith shape in 5 wild marine fish species by addressing 4 complementary questions. First, is there a global relationship between diet and otolith shape? Second, which prey categories are involved in this relationship? Third, what are the respective contributions of food quantity and relative composition to diet–otolith shape co-variation? Fourth, is diet energetic composition related to otolith shape? For each species, we investigated how otolith shape varies with diet. These questions were tackled by describing diet in... |
| Tipo: Text |
Palavras-chave: Fourier analysis; English Channel; Interspecific; Morphometric analysis; Otolith growth; Saccular otolith; Stomach contents. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00345/45639/45269.pdf |
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| Mahe, Kelig; Deschamps, Denise; Elleboode, Romain; Goraguer, Herle. |
| France and Canada work together to follow the salmon populations (Salmo salar) of the North-western Atlantic, integrating the French territory of Saint Pierre and Miquelon (subdivision 3Ps). Ageing data are thus provided by these countries. The age estimation of salmon is carried out starting from the scales. These present two distinct areas because this migrating fish lives at first in rivers and the second part at sea with some passages in rivers (homing phenomenon). As a result of which, the interpretation of ages from these scales is difficult. The purpose of this meeting which was held in Saint-Pierre and Miquelon from the 10 to September 14, 2012 with French and Canadian scientists, was to measure and optimize the precision of the age data provided... |
| Tipo: Text |
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| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00116/22680/20415.pdf |
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| Chater, Ines; Romdhani-dhahri, Ahlem; Dufour, Jean-louis; Mahe, Kelig; Chakroun-marzouk, Nadia. |
| The growth and mortality of the brown meagre, Sciaena umbra from the Gulf of Tunis, were investigated using a sample of 276 specimens, ranging from 15.3 to 49.2 cm total length and from 43 to 1565 g total weight. Specimens were collected from artisanal fisheries between October 2008 and September 2011. Otoliths were extracted, thin cross-sections were realized and radii were measured. The log-linear morphometric relationships between total length-total weight and total length-otolith radius were significant (p < 0.05), showed positive allometry (b=3.15) and isometry (b=0.90), respectively. The marginal analysis suggested that only one growth increment was deposited per year. The maximum age of the brown meagre was 22 years for males and 31 years for... |
| Tipo: Text |
Palavras-chave: Brown meagre; Thin otoliths; Growth; Mortality; Gulf of Tunis; Mediterranean Sea. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00424/53552/54415.pdf |
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| Cochard, Marie-laure; Elleboode, Romain; Mahe, Kelig. |
| La baie de Granville dans le golfe normano-breton, située en Manche Est, représente la principale région française et européenne de pêche du buccin (Buccinum undatum) et génère une activité économique importante (environ 8000 tonnes et 12 millions € par an). Cette pêcherie est exploitée par 50 à 60 caseyeurs (arts dormants). Elle est très encadrée réglementairement (licences, quotas journaliers, taille minimale de capture). Bien que la production estimée soit relativement stable ces dernières années, la pêcherie reste vulnérable car localisée dans la partie méridionale de l’aire de répartition de l’espèce et pourrait être impactée défavorablement par un réchauffement climatique (Cf. derniers scenarii du GIEC). En ce sens, le buccin pourrait constituer une... |
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| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00387/49801/50369.pdf |
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| Delpech, Jean-paul; Mehault, Sonia; Rostiaux, Emilie; Leaute, Jean-pierre; Leblond, Emilie; Demaneche, Sebastien; Coppin, Franck; Mahe, Kelig; Vaz, Sandrine. |
| This report is a result of a contract between Ifremer and the French Ministry of Industry. The aim was to provide map the fisheries activity and landings for french fishing vessels, located in the Eastern Channel and the Bay of Biscay during the year 2005. 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: Fishing fleets; Fishing gears; Bay of Biscay; Eastern Channel; Mapping; Landings; Fisheries activity; Flottilles; Pêche; Engins; Golfe de Gascogne; Manche est; Cartographie; Production; Activité halieutique. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/rapport-6645.pdf |
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| Khoufi, Widien; Elleboode, Romain; Jaziri, Héla; El Fehri, Safouène; Bellamy, Elise; Ben Meriem, Sadok; Romdhane, Mohamed; Mahe, Kelig. |
| Hake (Merluccius merluccius) is widely distributed in the Atlantic Ocean and the Mediterranean Sea. It is one of the most exploited demersal fish. In Tunisia, hake is captured from the north to the south (KHOUFI et al., 2010). Hake is an important species of economic interest and thus the subject of a large literature, but its biology remains insufficiently known, particularly on terms of age and growth estimations, which are essential for stock assessment and management. Otolith microstructure provides a useful tool for age determination of juvenile hake, based on daily increment deposition (ARNERI & MORALES-NIN, 2000; MORALES-NIN et al., 2005; KACHER & AMARA, 2005; BELCARI et al., 2006). Consequently, we studied growth and estimated age, using... |
| Tipo: Text |
Palavras-chave: Merluccius merluccius; Microstructure journalière; Phase pélagique; Taux de croissance; Merluccius merluccius; Daily microstructure; Pelagic phase; Growth rate. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00116/22681/20416.pdf |
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| Mahe, Kelig; Rabhi, Khalef; Bellamy, Elise; Elleboode, Romain; Aumond, Yoann; Huet, Jerome; Cresson, Pierre; Roos, David. |
| The oblique-banded grouper, Epinephelus radiatus (Day, 1968), occurred within the whole Indo- West Pacific where it is harvested by small-scale coastal fisheries. The aim of this study was to estimate the growth of this species at Reunion Island (South-West Indian Ocean) since no study investigated this topic so far. Fifty-seven individuals were sampled in the landings of the French local artisanal fisheries from March 2014 to March 2015. The relationships between two types of body length (total and standard lengths, cm) and total weight (g) were significant (p < 0.05). Total length-weight relationship was described by the following parameters: a = 0.01 and b = 3.098. For each individual, morphometry of the whole otolith was described with several... |
| Tipo: Text |
Palavras-chave: Epinephelidae; Epinephelus radiatus; Otolith; Indian Ocean; Ageing; Otolith weight. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00313/42385/41723.pdf |
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| Registros recuperados: 135 | |
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