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Registros recuperados: 13
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A review of capture and post-release mortality of elasmobranchs ArchiMer
Ellis, J. R.; Phillips, S. R. Mccully; Poisson, Francois.
There is a need to better understand the survivorship of discarded fishes, both for commercial stocks and species of conservation concern. Within European waters, the landing obligations that are currently being phased in as part of the European Union's reformed common fisheries policy means that an increasing number of fish stocks, with certain exceptions, should not be discarded unless it can be demonstrated that there is a high probability of survival. This study reviews the various approaches that have been used to examine the discard survival of elasmobranchs, both in terms of at-vessel mortality (AVM) and post-release mortality (PRM), with relevant findings summarized for both the main types of fishing gear used and by taxonomic group. Discard...
Tipo: Text Palavras-chave: Batoids; By-catch; Discards; Dogfish; Sharks; Survival.
Ano: 2017 URL: https://archimer.ifremer.fr/doc/00358/46902/46980.pdf
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Biologia de Paralonchurus brasiliensis (Steindachner) (Teleostei, Sciaenidae) no litoral sul do Estado do Paraná, Brasil Zoologia
Robert,Maurício de C.; Michels-Souza,Maria A.; Chaves,Paulo de T..
Apresentam-se atributos de estrutura populacional, reprodução e alimentação de Paralonchurus brasiliensis no litoral Sul do Estado do Paraná. As coletas foram realizadas com rede de arrasto de fundo, de março de 1999 a janeiro de 2000, sobre as isóbatas 10 e 15 m. Os indivíduos são mais abundantes durante a primavera, época de recrutamento dos jovens menores que 93 mm. A relação peso/comprimento para sexos grupados é PT(g) = 2,74E-6.CT(mm)3,22 (n = 659; R² = 0,99). Maturação gonadal é registrada a partir da classe de comprimento 130-165 mm, e o comprimento médio de primeira maturação - sexos grupados - é estimado em 175 mm. Poliquetas são o item alimentar mais freqüente em todas as classes de tamanho e estações do ano, seguidos de crustáceos e peixes....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Alimentação; By-catch; Desova; Maria-luísa; Recrutamento.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000100024
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Collaborative research: Development of a manual on elasmobranch handling and release best practices in tropical tuna purse-seine fisheries ArchiMer
Poisson, Francois; Seret, Bernard; Vernet, Anne-lise; Goujon, Michel; Dagorn, Laurent.
The reduction of by-catch mortality is an objective of the ecosystem approach to fisheries and a request made by consumers. Elasmobranchs, an important component of the French tropical tuna purse seine fishery by-catch, are currently thrown back into the sea. Fishers interact with various types of elasmobranchs that range widely in size, weight and shape, and could pose various degrees of danger to the crew. A diversity of discarding practices within the fleet were reported, some practices were considered suitable, others needed to be adapted and improved and others simply had to be banned. The majority of the crews were likely to improve their handling practices if they were presented with practical suggestions that were quick and easy. Combining...
Tipo: Text Palavras-chave: By-catch; Tropical purse-seiner; Sharks; Handling/release practices; Mitigation; Fish welfare.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00159/27008/28367.pdf
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Contribución al estudio biológico de la tintorera (prionace glauca) capturada accidentalmente en la pesquería de palangre de superficie de pez espada en el mediterráneo occidental OceanDocs
de la Serna, J.M.; Valeiras, J..
(Contribution to the biological study of blue shark (Prionace glauca) incidental catch by the Spanish surface longline fisheries for swordfish in the western Mediterranean). Blue shark (Prionace glauca) bycatches in the Spanish surface longline fisheries in the Mediterranean targeting swordfish (Xiphias gladius) from 1999 to 2001 represented 2% of the total catch. Information from onboard observers during 861 fishing sets in 26 longliners indicated that the highest catches were made in area 4-35000 (Alboran Sea) which represents 75.6% of the total observed catch of blue shark. The observed CPUE are from 5.5 to 34.1 kg/1000 hooks. Mean size at capture (LJFL) was 141.6 cm (SD=35.88). The proportion of females from the total was 0.5.
Tipo: Report Palavras-chave: Swordfish fishery; Mediterranean; Blue shark; By-catch; Prionace glauca; Shark fisheries.
Ano: 2003 URL: http://hdl.handle.net/1834/790
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Contribución al estudio biológico de la tintorera (prionace glauca) capturada accidentalmente en la pesquería de palangre de superficie de pez espada en el mediterráneo occidental OceanDocs
de la Serna, J.M.; Valeiras, J..
(Contribution to the biological study of blue shark (Prionace glauca) incidental catch by the Spanish surface longline fisheries for swordfish in the western Mediterranean). Blue shark (Prionace glauca) bycatches in the Spanish surface longline fisheries in the Mediterranean targeting swordfish (Xiphias gladius) from 1999 to 2001 represented 2% of the total catch. Information from onboard observers during 861 fishing sets in 26 longliners indicated that the highest catches were made in area 4-35000 (Alboran Sea) which represents 75.6% of the total observed catch of blue shark. The observed CPUE are from 5.5 to 34.1 kg/1000 hooks. Mean size at capture (LJFL) was 141.6 cm (SD=35.88). The proportion of females from the total was 0.5.
Tipo: Report Palavras-chave: Swordfish fishery; Blue shark; By-catch; Mediterranean; Prionace glauca; Shark fisheries; Sharks.
Ano: 2003 URL: http://hdl.handle.net/1834/790
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Descartes da pesca do camarão sete-barbas como fonte de alimento para aves marinhas Zoologia
Branco,Joaquim Olinto.
From July 1996 to June 1997, in Armação do Itapocoroy, Penha, Santa Catarina State, Brazil, monthly census were done in three areas of traditional fishery and Itacolomis islands. A total of 10021 seabirds were registered, belonging to eight species, five genus and four families. The average number of seabirds per dragging varied between 80,2 and 113,6. Sterna spp, appeared at first in 43,3% of the released by-catch, followed by Larus dominicanus Lichtenstein, 1823, Fregata magnificens Matheus, 1914, Phalacrocorax brasilianus (Humboldt, 1805) and Sula leucogaster Boddaert, 1783. The average size of the fish consumed by the seabirds oscillated from 8,3 cm (Sterna spp.) to 18,5 cm (F. magnificens), with an average time from 6,12 to 7,55 minutes per by-catch...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Seabirds; By-catch; Feeding.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000100033
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Ecosystem approach to fisheries: a brief overview and some considerations for its application in ICCAT ArchiMer
Fromentin, Jean-marc; Fonteneau, Alain; Restrepo, Victor.
During the last SCRS plenary meeting, the sub-committee on environment suggested to present a document on the ‘Ecosystem Approach to Fisheries’ (EAF). This document firstly recalls the general scientific and institutional background of EAF, then we propose a synoptic view of EAF, including four main domains: governance, exploitation, resources and impacts on ecosystems. The way that EAF is tackled within the various tuna commissions is then summarised. Finally, we rapidly examine the way the SCRS could cope with EAF issues and we suggest to merge the sub-committee on environment with this on by-catch into a single subcommittee on ecosystem.
Tipo: Text Palavras-chave: Ecosystem; Resources; Exploitation; Governance; Environment; By-catch.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/00192/30334/28809.pdf
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Estrutura populacional de Callinectes ornatus Ordway (Crustacea, Portunidae) no Balneário Shangri-Lá, Pontal do Paraná, Paraná, Brasil Zoologia
Baptista,Cassiana; Pinheiro,Marcelo A. Amaro; Blankensteyn,Arno; Borzone,Carlos A..
Swimming crabs are commonly found in the otter-trawl shrimp fishery by-catch, which operate intensively in the Coastal Plain of Leste Beach, where is located Shangri-lá Beach (25°37'30"S and 48°25'08"W), Paraná State. This work aimed to study the population structure of Callinectes ornatus Ordway, 1863, the most abundant swimming crab in this beach. Between March 2000 and April 2001, fortnightly visits were accomplished in Shangri-lá at the fish market, where all swimming crabs of one otter-trawl were collected. The following data from each individual of C. ornatus were obtained: sex, carapace width (excluding lateral spines), weight, and the gonadal maturation stage, based on its color and size. Juveniles and mature males were dominant, mean sexual...
Tipo: Info:eu-repo/semantics/article Palavras-chave: By-catch; Maturity; Population biology; Sex ratio; Swimming crab.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000400018
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Les îles Éparses : vingt-cinq ans de recherche sur les tortues marines ArchiMer
Bourjea, Jerome; Ciccione, Stephane; Lauret-stepler, Marie; Marmoex, Cyril; Jean, Claire.
Depuis le milieu des années 70, les activités de recherche sur les tortues marines des îles Éparses se sont développées de manière constante. Elles ont mis en évidence l’importance des quatre îles Éparses émergées (Europa, Juan de Nova, Glorieuses et Tromelin) qui font partie des principaux sites de ponte des tortues vertes (Chelonia mydas) de l’océan Indien et qu’elles appartiennent à 2 stocks génétiques différents pour l’espèce. Mais ces îles ne sont pas que des réservoirs de générations futures. Plus récemment, il a été montré qu’elles sont également des habitats primordiaux pour le développement des Tortues vertes et imbriquées (Eretmochelys imbricata) immatures qui y trouvent une protection contre les prédateurs et de la nourriture. L’ensemble des...
Tipo: Text Palavras-chave: Îles Éparses; Océan Indien; Chelonia mydas; Eretmochelys imbricata; Stock; Migration; Capture accidentelle; Éparses Islands; Indian Ocean; Chelonia mydas; Eretmochelys imbricata; Stock; Migration; By-catch.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00073/18455/15999.pdf
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Occurrence of Rhinoptericola megacantha (CESTODA, TRYPANORHYNCHA) in new host and new location Arq. Bras. Med. Vet. Zootec.
Napoleão,S.R.; Antonucci,A.M.; Amorim,A.F.; Takemoto,R.M..
Relata-se a ocorrência de Rhinoptericola megacantha (Cestoda, Trypanorhyncha) parasitando duas raias da espécie Rhinoptera brasiliensis, de um total de sete espécimes analisados. Foram encontrados três espécimes do cestóide, que havia sido descrito ocorrendo apenas no hospedeiro Rhinoptera bonasus capturado em Virginia (EUA), Golfo Venezuelano e Golfo do México. Este é o primeiro relato da ocorrência de R. megacantha no hospedeiro R. brasiliensis e primeira ocorrência no Brasil deste cestóide.
Tipo: Info:eu-repo/semantics/other Palavras-chave: Rhinoptera brasiliensis; Rhinoptericola megacantha; By-catch; Elasmobranch; Brazil.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352015000401175
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Results of the 2003 observer program on board the French purse seiner targeting Atlantic bluefin tuna in the Mediterranean sea ArchiMer
Fromentin, Jean-marc; Farrugio, Henri.
In 2003, IFREMER implemented an observer program on board of the French purse seiner targeting bluefin tuna (BFT) in the Mediterranean Sea to collect the size composition of catches. The protocol and the sampling design were established by IFREMER and the operations were carried out by two independent scientific observers (each one following a given boat over two distinguished fishing seasons). The 788 BFT measured by the two observers during the ~ 190 fishing days were mostly small/juveniles fish and solely represented 2.7% of the total catches. The sampling appears largely insufficient to be representative of this fleet and was furthermore strongly biased (big BFT being under-sampled). From our viewpoint, the implementation of a joint observer program on...
Tipo: Text Palavras-chave: Atlantic bluefin tuna; Catch; Size composition; Observer; Purse seine; Mediterranean; By-catch.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/00194/30502/28912.pdf
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Structure et connectivité de la mégafaune marine à l’échelle d’une région océanique. Enjeux pour la gestion durable des tortues vertes dans l’océan Indien occidental ArchiMer
Bourjea, Jerome.
This thesis is a comprehensive work aiming to improve scientific knowledge on the green turtle (Chelonia mydas) in order to provide key scientific evidences needed for the implementation of coherent and effective management measures to protect at the Western Indian Ocean scale this threatened species. In a first step, this work aimed to established baseline data on the abundance of green turtles nesting females and long term trends of some key nesting populations of the region by applying different modelling methods. In a second step, this work determined the regional genetic structure of this species and the relationships that exists between the different populations. Finally, the conservation of marine turtles being closely dependant to external...
Tipo: Text Palavras-chave: Tortues marines; Tortue verte; Chelonia mydas; Mégafaune; Évaluation de population; Tendance sur long terme; Structure génétique; Génétique des populations; Capture accidentelle; Biologie de la conservation; Unité de gestion; Océan Indien; Marines turtles; Green turtle; Chelonia mydas; Megafauna; Population assessment; Long term trend; Genetic structure; Population genetic; By-catch; Incidental catch; Biological conservation; Management units; Indian ocean.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00244/35505/34009.pdf
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Variabilidad temporal de la fauna acompañante del camarón Farfantepenaeus notialis en el Golfo de Ana María, Cuba OceanDocs
Valdés, E.; Villafuerte, V.; Domínguez, H.; Pérez, A..
Se analizó la diversidad de la fauna acompañante del camarón en la pesquería del Golfo de Ana María (plataforma suroriental cubana), en términos de la variabilidad temporal de los grupos taxonómicos que la integran y la abundancia relativa de las especies presentes, en particular de la ictiofauna. En el período 2002-2009, los peces fueron el principal integrante de la fauna acompañante del camarón en 82 %, seguido en orden por los crustáceos, moluscos, poríferos y equinodermos con cifras bajas. Resultó poca variabilidad entre los niveles de representatividad de los grupos taxonómicos del período 2002-2008 respecto al 2009. Se determinaron nueve especies de peces representativas (85 % de la captura), siendo dominantes la mojarra (Gerres cinereus), la...
Tipo: Journal Contribution Palavras-chave: Variability; By-catch; Relative abundance.
Ano: 2011 URL: http://hdl.handle.net/1834/4647
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