Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: 

RelevânciaAutorTítuloAno

Imprime registros no formato resumido
Registros recuperados: 4
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Otolith shape variation provides a marker of stock origin for north Atlantic bluefin tuna (Thunnus thynnus) ArchiMer
Brophy, Deirdre; Haynes, Paula; Arrizabalaga, Haritz; Fraile, Igaratza; Fromentin, Jean-marc; Garibaldi, Fulvio; Katavic, Ivan; Tinti, Fausto; Karakulak, F. Saadet; Macias, David; Busawon, Dheeraj; Hanke, Alex; Kimoto, Ai; Sakai, Osamu; Deguara, Simeon; Abid, Nouredinne; Santos, Miguel Neves.
Two stocks of bluefin tuna (Thunnus thynnus) inhabit the north Atlantic; the western and eastern stocks spawn in the Gulf of Mexico and the Mediterranean Sea respectively. Trans-Atlantic movements occur outside spawning time whereas natal homing maintains stock structure. Commercial fisheries may exploit a mixed assemblage of both stocks. The incorporation of mixing rates into stock assessment is precluded by uncertainties surrounding stock discrimination. Otolith shape descriptors were used to characterise western and eastern stocks of Atlantic bluefin tuna in the present study and to estimate stock composition in catches of unknown origin. Otolith shape varied with length and between locations and years. Within a restricted size range (200-297-cm fork...
Tipo: Text Palavras-chave: Elliptical Fourier analysis; Population structure; Stock mixture analysis.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00346/45745/45381.pdf
Imagem não selecionada

Imprime registro no formato completo
Tagging Atlantic bluefin tuna from a farming cage: An attempt to reduce handling times for large scale deployments ArchiMer
Rouyer, Tristan; Bonhommeau, Sylvain; Giordano, Nicolas; Ellul, Saviour; Ellul, Giovanni; Deguara, Simeon; Wendling, Bertrand; Belhaj, Mohamed Moez; Kerzerho, Vincent; Bernard, Serge.
Our knowledge on the biology and ecology of marine species have improved greatly through the use of archival tags by enabling the collection on information from individual in the wild. This is specifically true for large pelagic species such as the Atlantic Bluefin tuna (ABFT, Thunnus thynnus) where, for the first time, it has been possible to confirm through fisheries-independent data, migration patterns, reproductive and feeding behaviours and habitat use. However, large-scale tagging experiments that would enable researchers to tackle group behaviour are difficult to set up. On the one hand, the impact of the actual tagging operation should be as minimal as possible to avoid any change in behaviour of the fish which could influence tag data analyses. On...
Tipo: Text Palavras-chave: Large Atlantic bluefin tuna; Electronic tagging; Release; Farming.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00466/57818/60365.pdf
Imagem não selecionada

Imprime registro no formato completo
Determining natal origin for improved management of Atlantic bluefin tuna ArchiMer
Rodríguez‐ezpeleta, Naiara; Díaz‐arce, Natalia; Walter, John F; Richardson, David E; Rooker, Jay R; Nøttestad, Leif; Hanke, Alex R; Franks, James S; Deguara, Simeon; Lauretta, Matthew V; Addis, Piero; Varela, Jose Luis; Fraile, Igaratza; Goñi, Nicolas; Abid, Noureddine; Alemany, Francisco; Oray, Isik K; Quattro, Joseph M; Sow, Fambaye N; Itoh, Tomoyuki; Karakulak, F Saadet; Pascual‐alayón, Pedro J; Santos, Miguel N; Tsukahara, Yohei; Lutcavage, Molly; Fromentin, Jean-marc; Arrizabalaga, Haritz.
Effective sustainable management of marine fisheries requires that assessed management units (that is, fish stocks) correspond to biological populations. This issue has long been discussed in the context of Atlantic bluefin tuna (ABFT, Thunnus thynnus) management, which currently considers two unmixed stocks but does not take into account how individuals born in each of the two main spawning grounds (Gulf of Mexico and Mediterranean Sea) mix in feeding aggregations throughout the Atlantic Ocean. Using thousands of genome‐wide molecular markers obtained from larvae and young of the year collected at the species’ main spawning grounds, we provide what is, to the best of our knowledge, the first direct genetic evidence for “natal homing” in ABFT. This has...
Tipo: Text
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00595/70710/68917.pdf
Imagem não selecionada

Imprime registro no formato completo
Tagging Atlantic bluefin tuna from a Mediterranean spawning ground using a purse seiner ArchiMer
Rouyer, Tristan; Bonhommeau, Sylvain; Giordano, Nicolas; Giordano, François; Ellul, Saviour; Ellul, Giovanni; Deguara, Simeon; Wendling, Bertrand; Bernard, Serge; Kerzerho, Vincent.
Atlantic bluefin tuna, Thunnus thynnus, is as an emblematic and commercially valuable large pelagic species. In the past ten years, the purse seine fishery in the Mediterranean represents more than 50 % of the catch. Nowadays, purse seines target large fish and operate during the spawning season in the spawning grounds. Electronic tagging has shed a considerable amount of light on the ecology and behaviour of bluefin tuna over the past twenty years. However, such technique has rarely been applied on large bluefin tunas caught by the Mediterranean purse seine fishery despite its major importance. The logistical constraints related to this specific fishery, combined with the timing of migration of the fish and the requirements related to the handling of big...
Tipo: Text Palavras-chave: Large Atlantic bluefin tuna; Eastern Atlantic and Mediterranean stock; Electronic tagging; Purse seine; Migrations.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00607/71876/70622.pdf
Registros recuperados: 4
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional