Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados OceanDocs (3) Autor Lucifora, L.O. (3) Lasta, M.L. (2) Valero, J. (2) Bogazzi, E. (1) Bremec, C. (1) Burgos, G. (1) Hernandez, D.R. (1) Mais... Palavra-chave Scallop fisheries (2) Abundance (1) Age (1) Benthos (1) Biomass (1) Exploitation (1) Feeding behaviour (1) Fishery surveys (1) Fishing grounds (1) Growth (1) Http://aims.fao.org/aos/agrovoc/c_10778 (1) Http://aims.fao.org/aos/agrovoc/c_186 (1) Http://aims.fao.org/aos/agrovoc/c_2947 (1) Http://aims.fao.org/aos/agrovoc/c_3394 (1) Http://aims.fao.org/aos/agrovoc/c_37902 (1) Http://aims.fao.org/aos/agrovoc/c_878 (1) Http://aims.fao.org/aos/agrovoc/c_926 (1) Reproductive behaviour (1) Shark fisheries (1) Mais... Tipo do documento Journal Contribution (2) Theses and Dissertations (1) Ano 2003 (1) 2001 (1) 1998 (1) País Belgium (3) Idioma Espanhol (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Ecología y conservación de los grandes tiburones costeros de Bahía Anegada, provincia de Buenos Aires, Argentina. OceanDocs Lucifora, L.O.. Reproduction, age, growth, feeding habits and population dynamics of four large temperate sharks (sand tiger shark Carcharias taurus, school shark Galeorhinus galeus, copper shark Carcharhinus brachyurus, and broadnose sevengill shark Notorynchus cepedianus) were studied in Anegada Bay (between 39°50' and 40°40'S), Argentina. Data were gathered from 1089 individuals examined during a three-year study period. Age and growth were studied through examination of vertebral centra only in the first three species. Population dynamics was modeled through stage matrix population models. Most sand tiger sharks examined were adults and evidence indicates that they use the study area as a mating ground. Sand tiger males mature at 193 and females at 223 cm total length... Tipo: Theses and Dissertations Palavras-chave: Reproductive behaviour; Feeding behaviour; Age; Growth; Exploitation; Shark fisheries; Reproductive behaviour; Feeding behaviour; Growth; Age; Http://aims.fao.org/aos/agrovoc/c_37902; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_186. Ano: 2003 URL: http://hdl.handle.net/1834/1441 Analisis de la captura incidental asociada a la pesqueria de vieira patagónica Zygochlamys patagonica OceanDocs Bremec, C.; Lasta, M.L.; Lucifora, L.O.; Valero, J.. The faunistic composition of invertebrate by-catch associated with the Patagonian scallop Zygochlamys patagonica fishery before its development were studied. Analyzed material was sampled from catches performed in different beds with the F/V Erin Bruce during 1995, all of them in undisturbed areas, in the Argentine continental shelf. Macrofaunal species were identified, weighted and percentages of presence estimated. By-catch invertebrate species were determined for every bed, mainly invertebrates without present commercial value. This baseline information is considered a useful tool to detect structural changes in the benthic communities in relation to the conservation of possible substrates of recruitment of this resource and to estimate the evolution of... Tipo: Journal Contribution Palavras-chave: Scallop fisheries; Benthos; Fishing grounds; Benthos; Fishing grounds; Http://aims.fao.org/aos/agrovoc/c_878; Http://aims.fao.org/aos/agrovoc/c_2947. Ano: 1998 URL: http://hdl.handle.net/1834/2468 Uso de técnicas geoestadísticas en la estimación de la abundancia de vieira patagónica (Zygochlamys patagonica). OceanDocs Lasta, M.L.; Hernandez, D.R.; Bogazzi, E.; Burgos, G.; Valero, J.; Lucifora, L.O.. To evaluate absolute biomass, a research cruise was conducted on three scallop (Zygochlamys patagonica)beds (38°S-56°W, September 1998). The estimated bed surface was 1,162 nm(2). Sampling stations were regularly spaced at 5 nm intervals. A total of 118 trawls were performed with a non-selective dredge 2,5 m wide (efficiency 16-21. ). Trawls duration and speed were 10 minutes and 3 nm.h(-1)respectively. Samples were taken to estimate total and commercial (greater or equal than 55 mm total height)scallop weight and size frequency distribution. Coefficients of variation (CV)of the estimated biomass were calculated for each bed using geoestatistical techniques and a simple random sampling alternative with the same number of samples. The CVs for total scallop... Tipo: Journal Contribution Palavras-chave: Fishery surveys; Scallop fisheries; Biomass; Abundance; Biomass; Http://aims.fao.org/aos/agrovoc/c_926. Ano: 2001 URL: http://hdl.handle.net/1834/1870 Registros recuperados: 3 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