|
|
|
| Registros recuperados: 15 | |
|
|
| Doray, Mathieu; Berger, Laurent; Le Bouffant, Naig; Coail, Jean-yves; Vacherot, Jean-philippe; De La Bernardie, Xavier; Moriniere, Pierre; Lys, Elisabeth; Schwab, Romain; Petitgas, Pierre. |
| Measuring fish target strength (TS) in the wild is challenging because: (i) TS varies versus physical (orientation relative to the incident sound wave, size, and depth) and physiological fish attributes (maturity and condition), (ii) the target species and its aforementioned attributes are difficult to assess in near real time, and (iii) in the case of packed fish schools, accepted echoes may originate from multiple unresolved targets. We propose a method for controlled TS measurements of densely packed small pelagic fish during daytime, based on the joint use of a Remotely Operated Towed Vehicle, “EROC”, with a pelagic trawl fitted with a codend opening system, “ENROL”. EROC, equipped with a 70-kHz split-beam echosounder (Simrad EK60) and a low-light... |
| Tipo: Text |
Palavras-chave: Acoustics; Deformed cylinder model; Engraulis encrasicolus; Remotely operated vehicle; Target strength; Video. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00346/45693/45623.pdf |
| |
|
|
| Masse, Jacques. |
| Eight acoustic surveys were carried our in the Bay of Biscay, during 1989-94, to study the distribution and abundance of anchovy (Engraulis encrasicolus, L.) in that area. Acoustic data were stored using the INES/MOVIES acquisition and processing system. Species-specific distribution patterns were confirmed through complementary sampling with a mid-water trawl. This paper summarises the combination of technical procedures used for acoustic assessments, and the results of acoustic surveys in the Bay of Biscay that pertain to the dynamics of this stock. Information is presented on the distribution and abundance of anchovy and co-occuring species, and on the movement patterns detected within the pelagic fish community, in relation to environmental conditions.... |
| Tipo: Text |
Palavras-chave: Acoustic; Anchovy; Engraulis encrasicolus; Schooling; Pelagic; Behaviour; Bay of Biscay. |
| Ano: 1996 |
URL: http://archimer.ifremer.fr/doc/00191/30265/28719.pdf |
| |
|
| |
|
|
| Gatti, Paul; Cominassi, Louise; Duhamel, Erwan; Grellier, Patrick; Le Delliou, Herve; Le Mestre, Sophie; Petitgas, Pierre; Rabiller, Manuella; Spitz, Jerome; Huret, Martin. |
| There is a growing interest in monitoring body condition of marine organisms in the context of the ecosystem approach to fisheries and global change. Fish condition is under the influence of environmental variability on seasonal scale, but also on longer timescales. It represents a good indicator of habitat quality or individual fitness, and is also a relevant parameter to evaluate energy transfer through the trophic chain. However, the sources of variability in fish condition need to be accurately understood and the significance of existing indices has to be correctly assessed. Here, we measured the energy density, a precise and global indicator of fish bioenergetic condition, for anchovy (Engraulis encrasicolus) and sardine (Sardina pilchardus) in the... |
| Tipo: Text |
Palavras-chave: Energy density; Calorimetry; Small pelagic fish; Engraulis encrasicolus; Sardina pilchardus; Northeast Atlantic. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00416/52754/53615.pdf |
| |
|
|
| Mafalda Júnior,Paulo; Rubín,Juan Perez de. |
| Two ichthyoplankton surveys were conducted during July 1994 and July 1995 in the Gulf of Cádiz with the aim of describing composition, abundance, distribution patterns and interannual variations of larval fish assemblages. Interannual differences were found in this study. In 1994, higher salinities were observed at external sites, though in 1995, higher values were observed at intermediate sites. The upper water column was warmer in 1994 and had less fish larvae density. During 1994, Sardinella aurita and Engraulis encrasicolus were abundant but spatial location was opposite. In 1995, abundance of both species was very different, but with similar spatial pattern. Cluster analysis revealed well-defined groups of stations and assemblages of larvae, primarily... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Larval fish assemblages; Sardinella aurita; Engraulis encrasicolus; Gulf of Cádiz. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000300014 |
| |
|
| |
|
| |
|
|
| Campello, Francois. |
| The author studies the microbial phenomena which occur during the maturation of French anchovies, some from the Basque, the others from the Roussillon coast. There are some differences in relation with the origin of the fishes. On a marine agar, the microflora of the Mediterranean ones is almost constant or in a light diminution while that of the Atlantic ones is climbing during 9 weeks before a decline. On an extremely salted agar and in the both origins the archaebacteria are increasing in number during 5 to 6 weeks and diminishing before. The complete ripening is obtained within 16-17 weeks. The limits of the significance of the microbiological analysis are discussed. |
| Tipo: Text |
Palavras-chave: MED; France; ANE; Clupeidae; Pisces; Engraulis encrasicolus; Microorganisms; Curing; Processing fishery products. |
| Ano: 1983 |
URL: http://archimer.ifremer.fr/doc/1983/publication-1826.pdf |
| |
|
| |
|
| |
|
|
| Menu, Clara. |
| Small pelagic fish show a general decrease in size and body condition over the past two decades in the North-East Atlantic. The underlying factors are still not well understood, however recent studies point to a bottom-up control. In order to understand how the environment impacts the main biological functions, i.e. growth, reproduction and maintenance, we adopted a bioenergetic modelling framework based on the Dynamic Energy Budget theory. To improve the robustness of our study, we chose a comparative approach between two species, Engraulis encrasicolus and Sardina pilchardus, both living in three areas, namely the English Channel, the Bay of Biscay and the Gulf of Lion. Our model is calibrated over the Bay of Biscay and then applied to the other areas,... |
| Tipo: Text |
Palavras-chave: Engraulis encrasicolus; Sardina pilchardus; Théorie Dynamic Energy Budget; Traits d'histoire de vie; Manche; Golfe de Gascogne; Golfe du Lion; Engraulis encrasicolus; Sardina pilchardus; Dynamic Energy Budget theory; Life history traits; English Channel; Bay of Biscay; Gulf of Lion. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00667/77900/80092.pdf |
| |
|
|
| Chouvelon, Tiphaine; Strady, Emilie; Harmelin-vivien, Mireille; Radakovitch, Olivier; Brach-papa, Christophe; Crochet, Sylvette; Knoery, Joel; Rozuel, Emmanuelle; Thomas, Bastien; Tronczynski, Jacek; Chiffoleau, Jean-francois. |
| Trace metal contamination in the European sardine and anchovy food web was investigated in the Gulf of Lions, NW Mediterranean Sea, including seawater and size fractions of plankton. The results highlighted: i) higher and more variable concentrations in the smaller plankton size classes for all metals except cadmium; ii) higher concentrations in anchovy versus sardine for all elements except lead; iii) different patterns of metal bioaccumulation through the food web: cobalt, nickel, copper, silver, lead and zinc displayed continuously decreasing concentrations (with the exception of increased zinc in fish only), while mercury concentrations dropped considerably in larger plankton size classes and rose significantly in fish. Lastly, cadmium concentrations... |
| Tipo: Text |
Palavras-chave: Inorganic elements; Seawater; Size-classed plankton; Sardina pilchardus; Engraulis encrasicolus; Mediterranean Sea. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00511/62286/67906.pdf |
| |
|
|
| Bacha, Mahmoud; Moali, Aissa; Benmansour, Nasr-eddine; Brylinski, Jean-michel; Mahe, Kelig; Amara, Rachid. |
| Age, growth and diet of anchovy were studied for the first time from samples collected in the Bay of Benisaf (west Algerian coast) during summer (spawning period) and autumn (recruitment period) 2007. Age structure and growth parameters were determined by otolith (sagitta) analyses. The von Bertalanffy growth function fitted to age-length data showed that most of anchovy growth is achieved during the first year of life, suggesting that this stock is primarily supported by the smallest age groups and has a strong dependence on recruitment. There were no significant differences between males and females, and pooled mean parameters were: L infinity = 15.61 cm, k = 0.75 per year and to, -1.32 years. Whatever the age-class anchovy is strictly zooplanktivorous.... |
| Tipo: Text |
Palavras-chave: Engraulidae; Engraulis encrasicolus; MED; West Algeria; Anchovy; Growth; Age; Diet; Ontogenetic. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00011/12212/9046.pdf |
| |
|
|
| Pethybridge, Heidi; Roos, David; Loizeau, Veronique; Pecquerie, Laure; Bacher, Cedric. |
| A size-structured, bioenergetics model was implemented to examine the effects of short-term environmental changes on European anchovy, Engraulis encrasicolus, in the North-western Mediterranean Sea. The model approach was based on Dynamic Energy Budget (DEB) theory and details the acquisition and allocation of energy (J d(-1)) during an organisms' full life-cycle. Model calibration was achieved using biometric data collected from the Gulf of Lions between 2002 and 2011. Bioenergetics simulations successfully captured ontogenetic and seasonal growth patterns, including active growth in spring/summer, loss of mass in autumn/winter and the timing and amplitude of multi-batch spawning events. Scenario analysis determined that vital rates (growth and fecundity)... |
| Tipo: Text |
Palavras-chave: Engraulis encrasicolus; NW Mediterranean Sea; Environmental variability; Dynamic Energy Budget theory; Growth; Fecundity. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00127/23822/22490.pdf |
| |
|
|
| Huret, Martin; Tsiaras, K; Daewel, U; Skogen, Md; Gatti, Paul; Petitgas, Pierre; Somarakis, S. |
| Anchovy Engraulis encrasicolus distribution in European waters spans from the Mediterranean Sea to the North Sea, and is expected to expand further north with global warming. Observations from the eastern Mediterranean (North Aegean Sea), the Bay of Biscay and the North Sea reveal latitudinal differences in growth, maximum size, fecundity and timing of reproduction. We set up a mechanistic framework combining a bioenergetics model with regional physical-biogeochemical models providing temperature and zooplankton biomass to investigate the underlying mechanisms of variation in these traits. The bioenergetics model, based on the Dynamic Energy Budget theory and initially calibrated in the Bay of Biscay, was used to simulate growth and reproduction patterns.... |
| Tipo: Text |
Palavras-chave: Engraulis encrasicolus; Countergradient variation; Growth; Reproduction; Dynamic Energy Budget theory; Bay of Biscay; Aegean Sea; North Sea. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00504/61564/65489.pdf |
| |
| Registros recuperados: 15 | |
|
|
|
