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| Registros recuperados: 79 | |
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| Laubier, Lucien; Reyss, Daniel. |
| Ces journées ont permis de préciser les résultats scientifiques obtenus par des années d'efforts poursuivis avec ténacité. Dès sa création en effet, le CNEXO s'est efforcé de susciter la constitution d'équipes de recherches spécialement consacrées à l'aquaculture ; il s'est attaché, en tant que coordonnateur national, à réorienter les programmes d'un certain nombre de laboratoires vers des travaux liés à l'aquaculture, en particulier des études sur la reproduction et la nutrition des animaux marins ; il s'est préoccupé de former le personnel sans lequel cette orientation nouvelle et les expérimentations "sur le terrain" auraient été vides de sens. Des bourses de spécialisation ont été attribuées à des chercheurs et à des techniciens qui ont notamment été... |
| Tipo: Text |
Palavras-chave: Aquaculture; Reproduction; Nutrition; Mollusca; Crustacea; Pisces; Croissance organisme. |
| Ano: 1974 |
URL: http://archimer.ifremer.fr/doc/00173/28433/26766.pdf |
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| Daget, J.. |
| The author explains that the population dynamics study, descriptive and explicative way, the changes which happen in the structure and the parameters (growth rate, sex ratio, fecundity, mortality etc.) of a monospecific population, by the use of mathematical models which permit prediction and simulation. If the fish population is not exploited, it is necessary to sample it directly and obtain samples representative of the demographical structure by experimental fishing (like electrical fishing) or by selectivity corrections. If the population is exploited, often the exploited phasis of the stock is only studied from samples representative of the whole captures. Now it happens that there is an important difference between the demographical structure of the... |
| Tipo: Text |
Palavras-chave: Pisces; Catch statistics; Mathematical models; Population dynamics. |
| Ano: 1976 |
URL: http://archimer.ifremer.fr/doc/1976/publication-1999.pdf |
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| This work, divided in three parts, intends to establish a synthesis of knowledge about electric sea fishing. Taxis and tetanus thresholds for stimuli. In the second part, fish behaviour in electric field is described to know what sort of stimuli are the most efficient. The third part shows a fishing gear with light, electric field and pump and sums up the results of I.S.T.P.M. studies. Different problems are discussed and theoretical efficiency of the device is evaluated for sardines, Sardina pilchardus. At last, foreign studies about electric beam trawl are approached in an annex part. |
| Tipo: Text |
Palavras-chave: Pisces; Pump fishing; Electrified gear; Electric stimuli; Electric fishing. |
| Ano: 1980 |
URL: http://archimer.ifremer.fr/doc/1980/publication-1936.pdf |
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| 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 |
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| Maitre, J; Mercier, L; Dolo, L; Valotaire, Y. |
| In the liver of rainbow trout (Salmo gairdnerii ), vitellogenin (Vg) synthesis is influenced by oestradiol (E sub(2)) which is believed to act through the classical mechanism of steroid hormone action. After binding of the hormone to a soluble specific receptor protein, the oestradiol-receptor complex is translocated to the nucleus, where it interacts with DNA and modulates expression of Vg genes, leading to increased synthesis of specific mRNA and Vg. The authors show here: (i) the presence of specific oestrogen receptors in the cytosol of the male trout liver. (ii) The male liver, offering, an ideal experimental control of "zero" background, the authors followed - in the liver of male trouts - the kinetics of induction of Vg mRNA by hybridization with Vg... |
| Tipo: Text |
Palavras-chave: Salmonidae; Pisces; Proteins; Liver; RNA; Steroids; Biosynthesis; Receptors; Sex hormones; Sexual reproduction. |
| Ano: 1983 |
URL: http://archimer.ifremer.fr/doc/1983/acte-1230.pdf |
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| Anthouard, M; Paris, J. |
| Movement activity and localization of food were studied dynamically with the objective of establishing the capacities of behavioral adaptation of the young Dicentrarchus labrax faced with a novel situation. The role played by previous rearing conditions was demonstrated, the level of stimulation being a sensitive intervening factor (currents associated with the food). The data show the favourable effects of such treatment, and are in agreement with work carried out on higher vertebrates, which have brought to light the importance of early stimulation in behavioral ontogeny which respect to emotionality as well as capacities of adaptation in subjects reaching adulthood. |
| Tipo: Text |
Palavras-chave: Dicentrarchus labrax; Serranidae; Pisces; Juveniles; Stimuli; Locating; Locomotion; Fish culture; Nutrition; Ethology. |
| Ano: 1983 |
URL: http://archimer.ifremer.fr/doc/1983/acte-1253.pdf |
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| Registros recuperados: 79 | |
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