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| Registros recuperados: 54 | |
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| Roos, David; Pelletier, Dominique; Ciccione, Stéphane; Taquet, Marc; Hughes, George. |
| Monitoring the abundance of green turtles (Chelonia mydas) is necessary to assess population trends and risks of collapse. This note presents a study aimed at comparing three techniques for the direct estimation of green turtle numbers in their foraging habitats (seagrass beds and reef flats). The experiment was carried out at Mayotte Island, Western Indian Ocean. The techniques involved were surveys by snorkel, and aerial surveys using a microlight aircraft and a paramotor. Each technique had shortcomings and advantages. While each technique provided estimations of turtle numbers only surveys by snorkel permitted identification of species and sex, whenever visibility and turtle behaviour permitted. Along the shorelines, and over foraging areas, the... |
| Tipo: Text |
Palavras-chave: Foraging habitats; Snorkelling survey; Aerial survey; Abundance estimation; Chelonia mydas; Green turtle. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-432.pdf |
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| Doray, Mathieu; Stequert, Bernard; Taquet, Marc. |
| Daily growth increments measured in the otolith of Thunnus atlanticus were used to estimate the age and growth of individuals. which were sampled from an artisanal fishery operating around fish aggregating devices (FADs) moored off Martinique Island. In this study, 76 otoliths were analysed for fish ranging from 20 to 68 cm fork lengths (FL). The fish were caught using trolling lines at depths ranging from 0 to 10 m. Counts were made, under a light microscope, on the external part of the transverse section of the sagittae, from the primordium to the ventral edge. The mean coefficient of variation of the age reading was 2.4%. To validate readings, the number of increments for 11 individuals was counted using both optic and scanning electron microscopes. The... |
| Tipo: Text |
Palavras-chave: Thunnus atlanticus; Daily increment; Otolith; Age. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/2004/publication-396.pdf |
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| Letourneur, Yves; Chabanet, Pascale; Durville, Patrick; Taquet, Marc; Teissier, Emmanuel; Parmentier, Maurice; Quero, Jean-claude; Pothin, Karine. |
| The ichthyofauna of Reunion Island, Southwestern Indian Ocean, was sampled during several ecological and artisanal fisheries studies. Information from these investigations and from other sources were included to compile the present checklist of the marine fishes of the island. A total of 885 species belonging to 150 families was recorded. Nine species are known only from Reunion, indicating endemism of about 1.0%. The most speciose families (Labridae, Gobiidae, Serranidae, and Pomacentridae) were also among the most speciose at the neighbouring Mauritius Island (except gobiids), and, generally, on other islands in the Indian Ocean area (Maldives, Chagos, Madagascar and Christmas Island). The Gobiidae only represented 5.4% of the ichthyofauna, which was... |
| Tipo: Text |
Palavras-chave: Biogeography; Checklist; Reunion Island; ISW; Marine ichthyofauna. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/2004/publication-713.pdf |
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| Taquet, Marc; Dagorn, L; Gaertner, J; Girard, C; Aumerruddy, R; Sancho, G; Itano, D. |
| To study the behavior of dolphinfish (Coryphaena hippurus) around drifting Fish Aggregating Devices (FADs), we tagged individuals with long-lived, coded sonic transmitters and attached automated sonic receivers to drifting FADs in two regions of the Western Indian Ocean. Among the three tagging methods used in this study (surgery, external hooks, underwater bait without capture), the latest resulted in residence times significantly shorter than the other ones, likely due to regurgitation. Dolphinfish tagged with the two other methods usually stayed several days associated to FADs (Kaplan-Meier survival analysis 5.09 days, mean 6.25 days, SD 4.39 days, maximum 15.26 days), drifting with them. There was no significant difference in the residence times of... |
| Tipo: Text |
Palavras-chave: Indian Ocean; Meeting point; Ecological trap; Behavior of fish; Ultrasonic telemetry; Acoustic tagging; FAD; Dolphinfish. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-3733.pdf |
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| Taquet, Marc; Sancho, G; Dagorn, L; Gaertner, J; Itano, D; Aumeeruddy, R; Wendling, B; Peignon, C. |
| We adapted a visual census method, mainly used in demersal and reef fish studies, to characterize fish communities associated to drifting fish aggregating devices (FADs) in the Western Indian Ocean. Drifting FAD associated fishes from both equatorial (Seychelles) and tropical waters (Reunion Island) were examined by divers. A total of 32 species (belonging to 16 families) were observed associated with drifting FADs in equatorial waters, and 24 species (14 families) were found around FADs in tropical waters. Twenty species were found in both regions. The highest number of species observed at a single FAD was 18 (12 +/- 2, mean +/- SD) in equatorial and 13 (10 +/- 3) in tropical waters, not counting circumnatant species loosely associated with the FAD. Some... |
| Tipo: Text |
Palavras-chave: Indian Ocean; Reunion Island; Seychelles; Fish aggregations; Visual census; Drifting FAD; Pelagic fishes. |
| Ano: 2007 |
URL: https://archimer.ifremer.fr/doc/00602/71370/69818.pdf |
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| Taquet, Marc; Sancho, G; Dagorn, L; Gaertner, J; Itano, D; Aumeeruddy, R; Wendling, B; Peignon, C. |
| We adapted a visual census method, mainly used in demersal and reef fish studies, to characterize fish communities associated to drifting fish aggregating devices (FADs) in the Western Indian Ocean. Drifting FAD associated fishes from both equatorial (Seychelles) and tropical waters (Reunion Island) were examined by divers. A total of 32 species (belonging to 16 families) were observed associated with drifting FADs in equatorial waters, and 24 species (14 families) were found around FADs in tropical waters. Twenty species were found in both regions. The highest number of species observed at a single FAD was 18 (12 +/- 2, mean +/- SD) in equatorial and 13 (10 +/- 3) in tropical waters, not counting circumnatant species loosely associated with the FAD. Some... |
| Tipo: Text |
Palavras-chave: Indian Ocean; Reunion Island; Seychelles; Fish aggregations; Visual census; Drifting FAD; Pelagic fishes. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-3734.pdf |
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| Taquet, Marc; Blanc, Michel; Dagorn, Laurent; Filmalter, John David; Fonteneau, Alain; Forget, Fabien; Gaertner, Jean-claude; Galzin, René; Gervain, Paul; Goujon, Michel; Guillotreau, Patrice; Guyader, Olivier; Hall, Martin; Holland, Kim; Itano, David; Monteagudo, Jean-pierre; Morales-nin, Beatriz; Reynal, Lionel; Sharp, Michael; Sokimi, Williams; Tanetoa, Mainui; Yen Kai Sun, Stephen. |
| Tipo: Text |
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| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00115/22657/20383.pdf |
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| Dagorn, Laurent; Holland, Kim N.; Hallier, Jean-pierre; Taquet, Marc; Moreno, Gala; Sancho, Gorka; Itano, David; Aumeeruddy, Ryaz; Girard, Charlotte; Million, Julien; Fonteneau, Alain. |
| Yellowfin tuna (Thunnus albacares) are known to preferentially occupy the Surface mixed layer above the thermocline and it has been Suggested that they are physiologically restricted to water lerriperatt.11-CS no more than 8 degrees C colder than Surface waters. However, we here report for dive data acquired from a large yellowfin tuna which demonstrate for the first time that this species is indeed capable of making prolonged dives into deep cold waters. A yellowfin tuna (134 cm fork length) caught near ail anchored fish aggregating device (FAD) in the Seychelles (Western Indian Ocean) was equipped with all internally implanted archival tag and released. The fish was recaptured 98 days later. As predicted for this species, this fish spent 85% of its time... |
| Tipo: Text |
Palavras-chave: Indian ocean; Yellowfin tuna; Swimming speed; Diving behavior; Vertical movements; Archival tap. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1402.pdf |
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| Guillou, Annie; Lagin, Alain-sabin; Lebeau, Alain; Priour, Daniel; Repecaud, Michel; Reynal, Lionel; Sacchi, Jacques; Taquet, Marc. |
| Since 1983, the research on the optimal conception of FADs in Martinique was particularly focused on the improvement of their resistance to different maritime or human aggressions. Following several experimentations made with different types of fads, the choice was brought on light devices anchored in 1 500 to 2 000 m depths and an experimental approach was conducted to identify the causes of loss of fads and to attempt to modelize their hydrodynamic behaviour with relation to the sea conditions. Three mathematical models are used to simulate the fad behaviour under current action and swell, and to estimate the forces exerted on each part of the device. The results of this study are presented. The fad design used nowadays for the development of pelagic... |
| Tipo: Text |
Palavras-chave: Attracting techniques Fishing technology Maintenance and repair Tuna fisheries Article Geographic Terms: ASW; Caribbean Sea; Lesser Antilles Lesser Antilles; Martinique. |
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/00042/15287/12673.pdf |
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| Biais, Gerard; Taquet, Marc. |
| Dix dispositifs de concentration de poissons (DCP) ont été posés autour de l'Ile de La Réunion au cours de l'année 1988. Ils sont constitués de bouées supportant du matériel attractif (feuillards plastiques et filets) et mouillés entre 3 et 12 milles nautiques de la côte sur des fonds de 500 à 1500 mètres de profondeur. Un suivi de l'activité de péche à proximité des DCP a permis d'établir à 30 tonnes par DCP les captures annuelles effectuées dans la zone proche des DCP. Les thons (Thunnus albacares, Thunnus obesus) et les daurades (Coryphaena hippurus) constituent l'essentiel des prises. Il est difficile d'évaluer la réduction des coûts de production qu'induisent les DCP, néanmoins le coût d'un DCP est estimé de l'ordre de 1 à 2% de la production en... |
| Tipo: Text |
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| Ano: 1990 |
URL: http://archimer.ifremer.fr/doc/00104/21489/19070.pdf |
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| Poisson, Francois; Gaertner, Jean-claude; Taquet, Marc; Durbec, Jean-pierre; Bigelow, Keith. |
| Commercial longline fishing data were analyzed and experiments were conducted with gear equipped with hook timers and time-depth recorders in the Reunion Island fishery (21 degrees 5'S lat., 53 degrees 28'E long.) to elucidate direct and indirect effects of the lunar cycle and other operational factors that affect catch rates, catch composition, fish behavior, capture time, and fish survival. Logbook data from 1998 through 2000, comprising 2009 sets, indicated that swordfish (Xiphias gladius) catch-per unit of effort (CPUE) increased during the first and last quarter of the lunar phase, whereas albacore (Thunnus alalunga) CPUE was highest during the full moon. Swordfish were caught rapidly after the longline was set and, like bigeye tuna (Thunnus obesus),... |
| Tipo: Text |
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| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00011/12237/9019.pdf |
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| Le Gall, Jean-yves; Bosc, Pierre; Taquet, Marc. |
| A research programm on the marine green turtle Chelonia mydas nesting on the two major reproduction sites for the species in the Indian Ocean, conducled over last 15 years, included intensive tagging programm. Processing of these lagging data provides estimations of adult female populations {or each site and season from two independent methods. First classical method is the ratio of total number of nests produced over a define time on the mean individual number of nests by female during the same time (November, December, January). The computed mean individual number ranges from 3 to 3.5 obtained over 2 to 3 months. The second method is the multiple capture-recapture method (JOLLY, 1965; SEBER, 1965; MANLY, 1984). Il is an original tentative of applying... |
| Tipo: Text |
Palavras-chave: Tortue verte; Chelonia mydas; Reproduckion; Ponte; Population; Femelles; Marquage; Recapture; Océan Indien.; Marine green turtle; Chelonia mydas; Capture; Recapture; Indian Ocean; Nesting; Populations; Tagging; Reproduction. |
| Ano: 1986 |
URL: http://archimer.ifremer.fr/doc/00113/22406/20103.pdf |
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| Registros recuperados: 54 | |
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