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| Registros recuperados: 25 | |
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| Saldanha,Tatiana; Bragagnolo,Neura. |
| Due to the adverse effects of the cholesterol oxidation products for the human health, the search of the occurrence and the quantification of these compounds in foods are considered of great importance. In this paper the effect of grilling in hake and sardine on cholesterol oxides formation and fatty acids alterations was investigated. The main fatty acids determined in both fishes were docosahexaenoic (DHA), oleic, eicosapentaenoic (EPA) and palmitoleic. The total lipids, fatty acids and cholesterol contents were decreased significantly (p < 0.02) after thermal treatment, with simultaneous increase of the cholesterol oxides contents. The cholesterol oxides determined in both species in the present study were: 19-hydroxycholesterol,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hake; Sardine; Fatty acids; Cholesterol; Effect of grilling; HPLC. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612010000200015 |
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| Paterson, Barbara; Marine Research Institute (Ma-Re), Zoology Department, University of Cape Town, South Africa; Barbara@paterson.alt.na; Kirchner, Carola; National Marine Information and Research Centre (NatMirc), Ministry of Fisheries and Marine Resources, Namibia; University of Cape Town, Graduate School of Business, South Africa; carola.kirchner32@gmail.com; Ommer, Rosemary E.; University of Victoria; ommer@uvic.ca. |
| As a legacy of Namibia’s colonial past, the country inherited severely depleted fish resources at the time of independence. Today, Namibia’s fisheries are almost exclusively industrial. The hake fishery is the country’s most important fishery, which was restructured from a pre-independence foreign fishery into one that is characterized by locally based, vertically integrated fishing and processing companies. It is widely believed that Namibia has successfully combined the neoliberal economics that have been characteristic of the development narratives since the 1980s with welfarist goals for poverty reduction. However, there are strong indications that the fish stocks are declining, while the high economic expectations for the... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Distant water fleets; Fisheries; Hake; Merlucius capensis; Merluccius paradoxus; Namibia; Namibianisation; Northern Benguela; South West Africa; Sustainable fisheries development. |
| Ano: 2013 |
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| Quero, Jean-claude. |
| This study concerns mainly 2 species Merluccius capensis and M. paradoxus; M. polli is a more northern species though the 3 species are known to inhabit the same regions. The life cycle, seasonal migrations geographical distribution and fishing grounds of the 2 main species are discussed in detail. The intensity of fishing in this region, over the past 10 years has increased to such an extent that during 1968 -1970 this production accounted for one half level on a world-wide basis. Attempts have been made by Britain to market this fish as a frozen product. |
| Tipo: Text |
Palavras-chave: South Africa; Fishing; Population dynamic; Ecology; Biology; Gadoide; Hake. |
| Ano: 1973 |
URL: http://archimer.ifremer.fr/doc/1973/publication-2228.pdf |
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| Cormon, Xochitl. |
| North Sea saithe (Pollachius virens) has high economic value for European fisheries. In recent years, North Sea saithe abundance has decreased, while abundance of hake (Merluccius merluccius), which was rarely fished in the North Sea, has increased dramatically in the area. This work investigates the nature of the ecological interactions between saithe and hake in the North Sea, in order to understand if recent hake emergence in this area could explain, at least partially, the recent decline of the saithe stock. The results obtained during this research suggested competitive interactions between saithe and hake predators in the area. In addition, this investigation revealed potential negative effects of hake on the resident saithe stock. Therefore, hake... |
| Tipo: Text |
Palavras-chave: Compétition; Lieu noir; Merlu; Simple réseau trophique; Émergence d’un prédateur; Mer du nord; Exploitative competition; Saithe; Hake; Simple foodweb; Up-coming predator; North sea. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00345/45638/45268.pdf |
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| Cervino, Santiago; Dominguez-petit, Rosario; Jardim, Ernesto; Mehault, Sonia; Pineiro, Carmen; Saborido-rey, Fran. |
| Spawning stock biomass (SSB) is one of the most common measures of stock status. However recent research on reproductive potential has shown that alternative variables may be an improvement over SSB. In the case of European hake (Merluccius merluccius), it is known that large individuals produce more eggs by unit of body weight, and their quality is better than those of small individuals. Under these circumstances, application of reproductive potential may be pertinent in the implementation of the Johannesburg agreement, since it is not only the spawning biomass but also its age or length structure that defines stock productivity and its ability to achieve maximum sustainable yield (MSY). In this contribution we used an age-length structured population... |
| Tipo: Text |
Palavras-chave: Egg production; Biological reference points; Steepness; Length based models; Hake. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00161/27254/25487.pdf |
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| Doyen, Luc; Thebaud, Olivier; Bene, Christopher; Martinet, V.; Gourguet, S.; Bertignac, Michel; Fifas, Spyros; Blanchard, Fabian. |
| Academia and management agencies show a growing interest for ecosystem-based fishery management (EBFM). However, the way to operationalize this approach remains challenging. The present paper illustrates how the concepts of stochastic co-viability, which accounts for dynamic complexities, uncertainties, risk and sustainability constraints, can be useful for the implementation of EBFM. In the present case, this concept is used to identify fishing strategies that satisfy both ecological conservation and economic sustainability in a multi-species, multi-fleet context. Economic Viability Analysis (EVA) and the broader Co-Viability Analysis (CVA), are proposed to expand the usual Population Viability Analysis (PVA) and precautionary approach. An illustration is... |
| Tipo: Text |
Palavras-chave: Ecosystem based fisheries management; Viability; Stochastic; Nephrops; Hake. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00074/18571/16153.pdf |
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| Laurec, Alain; Charuau, Anatole; Perodou, Jean-bernard; Nedelec, Daniel; Biseau, Alain; Durand, Jean-louis; Rivoalen, Jean-jacques; Dupouy, Herve; Le Louarn, G.; Leroux, L.. |
| The general study, scheduled from 1984 to 1986, aims at providing a judgement about the fisheries in the Celtic Sea. This area has been chosen because it is frequented by EEC vessels with, for the time being, a large majority of French vessels. Activities there are easier to monitor than anywhere else as coastal fisheries are little developed in the area. The final product will consist of a certain number of hypotheses about the planning strategies that could be implemented in the Celtic Sea. The main idea is, firstly, to conduct analytical studies, stock by stock, in order then, to synthesize them into a model integrating the interactions between fleets in relation to their target species. A bio-economical model, deriving from the latter, will enable the... |
| Tipo: Text |
Palavras-chave: Monk; Cuckoo ray; Blue whiting; Cod; Hake; Ling; Common dab; Data bases; Fishing statistics; French fisheries; Demersal fish; Nephrops; Celtic Sea; Baudroies; Raie fleurie; Julienne; Cardine; Morue; Merlu; Merlan; Base de données; Rejets; Statistiques de pêche; Pêcheries françaises; Poissons demersaux; Langoustine; Mer Celtique. |
| Ano: 1985 |
URL: http://archimer.ifremer.fr/doc/1985/rapport-3671.pdf |
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| Cormon, Xochitl; Kempf, Alexander; Vermard, Youen; Vinther, Morten; Marchal, Paul. |
| During the last 15 years, northern European hake (Merluccius merluccius) has increased in abundance, and its spatial distribution has expanded in the North Sea region in correlation with temperature. In a context of global warming, this spatial shift could impact local trophic interactions: direct impacts may affect forage fish through modified predator–prey interactions, and indirect impacts may materialize through competition with other resident predators. For instance, North Sea saithe (Pollachius virens) spatial overlap with hake has increased while saithe spawning-stock biomass has decreased recently notwithstanding a sustainable exploitation. In this context, we investigated the range of potential impacts resulting from most recent hake emergence in... |
| Tipo: Text |
Palavras-chave: Hake; Interspecific competition; Maximum sustainable yield; Multispecies stock assessment; Norway pout; Predator-prey interactions; Saithe; Simple foodweb; SMS. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00327/43794/45917.pdf |
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| Cosson, Jacky; Groison, Anne-laure; Suquet, Marc; Fauvel, Christian. |
| As in many marine fish, motility is triggered by osmotic pressure (OP) in cod and hake spermatozoa and motility ranges several minutes with a high velocity (above 50 mu m/s) period restricted to 100 s. A decrease in the flagellar beat frequency (BF) is partly responsible of this briefness. Detailed observations of the flagella during the motility period showed: 1) sea water provokes OP damages (blebs) which impair the correct wave propagation 2) waves become restricted to the proximal flagellum and tip becomes devoid of wave 3) the wave amplitude decreases. The combination of these factors drastically limits to the earliest period of motility the ability for spermatozoa to efficiently progress towards egg for fertilization. |
| Tipo: Text |
Palavras-chave: Osmotic pressure; Sperm motility; Spermatozoa; Hake; Cod. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-6552.pdf |
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| Doray, Mathieu; Mahevas, Stephanie; Trenkel, Verena. |
| Few analyses have been performed to estimate the efficiency of trawls targeting demersal fish using the ratio of catches and acoustic densities. In summer 2006, acoustic and fishing data were collected simultaneously over 3 d by three fishing vessels equipped with identical pelagic trawls in the Bay of Biscay. Variography identified moderate spatial autocorrelation in the acoustic backscatter at a mean scale of 3 km, a scale slightly smaller than the mean haul length (3.5 km), indicating that fish horizontal availability did not influence trawl efficiency. Acoustic backscattering densities expressed as nautical area scattering coefficients (NASCs) recorded in the trawled layer were compared with equivalent NASC (ENASC) values calculated from the species... |
| Tipo: Text |
Palavras-chave: Availability; Bay of Biscay; Catchability; Generalized linear model; Geostatistics; Hake; Vulnerability. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00002/11372/7980.pdf |
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| Charuau, Anatole. |
| Fishing crayfish on the gulf's mudflats is a traditional business practised by 450 boats of 12 to 18 metres in length and employs 2,500 sailors. In the north of the gulf, this activity is exclusive, in the south, immature hake are also caught, because the crayfish areas coincide, in part, with the nurseries of the northern stock of this species. Management of these fisheries, called mixed, of crayfish and hake is one of the greatest problems of the Gulf of Gascony. All assessments tend to show the responsibility of the crayfish boats in the future of the hake stock. The solution is likely to pass through a generalised increase of the 80 mm meshing that would lead, eventually, the hake stock yield to its maximum, but would eliminate a great many trades... |
| Tipo: Text |
Palavras-chave: Mixed fisheries; Bio economical modelisation; Bay of Biscay; Simulation; Prawn; Hake; Fishing fleet strategy; Fishing assessment; Pecherie mixre; Golfe de Gascogne; Modele bio economique; Simulation; Langoustine; Merlu; Stratégie des flottilles; Gestion des pêcheries. |
| Ano: 1988 |
URL: http://archimer.ifremer.fr/doc/1988/rapport-2569.pdf |
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| Pelletier, Dominique; Beucher, Helene; Chevalier, Robert; Laurec, Alain; Alperi, J.; Pereda, P.; Guichet, Roger; Dupouy, Herve; Peronnet, Isabelle. |
| The aim of the project "rationalization of biological sampling for stock assessment of marine fisheries in the bay of Biscay" is to perform statistical methods and computer programs allowing to test prognoses and diagnoses based on estimates of fishing mortalities, recruitments, yields per recruit, and the "gain-loss" function. The project gathers the laboratories of the community working on the Bay of Biscay fisheries, namely - Santander in Spain (1. E. 0) - La Rochelle and Lorient in France (IFREMER). A descriptive study has been carried out. The prepared documents contain a description of the procedures used to collect the information, by each of the laboratories involved, on: - landings - biological samplings. More comprehensive data have been gathered... |
| Tipo: Text |
Palavras-chave: Capture; Marine biology; Fisheries; Megrim; Monk; Hake; Data collection; TAC; Bay of Biscay; Stock assessement; Sampling; Statistics; Capture; Biologie marine; Halieutique; Cardine; Baudroie; Merlu; Collecte de données; TAC; Golfe de Gascogne; Evaluation des stocks; Echantillonnage; Statistiques. |
| Ano: 1991 |
URL: http://archimer.ifremer.fr/doc/1991/rapport-3621.pdf |
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| Kell, L; Pilling, G; Kirkwood, G; Pastoors, M; Mesnil, Benoit; Korsbrekke, K; Abaunza, P; Aps, R; Biseau, Alain; Kunzlik, P; Needle, C; Roel, B; Ulrich, Clara. |
| Current scientific management objectives for ICES roundfish stocks are to ensure conservation of the biological resource and do not explicitly consider economic or social objectives. For example, there are currently no objectives to maximize the sustainable yield or to reduce variability in total allowable catches (TACs). This is despite the fact that the current system can result in wide annual fluctuations in TAC, limiting the ability of the fishing industry to plan for the future. Therefore, this study evaluated management strategies that stabilized catches by setting bounds on the interannual variability in TACs. An integrated modelling framework was used, which simulated both the real and observed systems and the interactions between system... |
| Tipo: Text |
Palavras-chave: Whiting; TAC; Simulation; Saithe; Population modelling; North Sea; Management; Limiting variations; Harvest strategies; Hake; Haddock; Evaluation; Cod; Bounds. |
| Ano: 2006 |
URL: https://archimer.ifremer.fr/doc/2006/publication-3694.pdf |
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| Guichet, Roger. |
| European hake is one of the most important commercial species of the North East Atlantic. Its biology is quite well known in spite of age reading problems. This report provides a review of the state of knowledge based on updated data, specially for parameters used in the working groups in charge of stocks assessments. The fisheries for hake are essentially sequential. In recent years fishing mortalities have been moderate and the over exploitation of the stocks is due to the excessive catches of young fish and to the fishing pattern of some fleets. The result of this inappropriate exploitation pattern is dangerous with a decrease of the spawning stock biomass and recrutrnent for the two stocks. |
| Tipo: Text |
Palavras-chave: Merlu; Nord Est Atlantique; Biologie; Exploitation; Gestion; Hake; North East Atlantic; Biology; Fisheries; Management. |
| Ano: 1996 |
URL: http://archimer.ifremer.fr/doc/00422/53327/54169.pdf |
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| Registros recuperados: 25 | |
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