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Estimation du nombre de tortues vertes femelles adultes Chelonia mydas par saison de ponte à Tromelin et Europa (Océan Indien) (1973-1985) ArchiMer
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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Preliminary results on growth and movements of dogfish Scyliorhinus canicula (Linnaeus, 1758) in the Cantabrian Sea ArchiMer
Rodriguez-cabello, C; De La Gandara, F; Sanchez, F.
In this paper we present the first results on growth of dogfish (Scyliorhinus canicula L.) obtained from size frequency distributions collected during bottom trawl surveys and from 19 recaptures to date from 2 153 tagged individuals. The surveys belong to a series carried out in autumn in the Cantabrian Sea by the Institute Espanol de Oceanografia (1983-1995). The estimated parameters from the von Bertalanffy equation applying the Bhattacharya, Gulland and Holt and Ford-Walford methods were K of around 0.09-0.13, and a maximum length close to 89-98 cm. In addition, based on ten recoveries with reliable data of location we assume a priori that this species does not move long distances in the area of study
Tipo: Text Palavras-chave: Roussette; Croissance; Répartition en taille; Recapture; Migration; Dogfish; Growth; Length-frequency; Recapture; Migration.
Ano: 1998 URL: http://archimer.ifremer.fr/doc/00326/43691/43119.pdf
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