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Registros recuperados: 8
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Massive infections with fungus of the rotifer Brachionus plicatilis ArchiMer
Comps, Michel; Menu, Bruno; Moreau, V.
Massive infections of a fungus exhibiting sorne characteristics of the Lagenidiaceae are described for the flfst time from rotifers (Brachionus plicatilis ) reared in a hatchery as food for fish larvae. This fungal agent was associated with mass mortalities in thc populations of cultivaled rolifers.
Tipo: Text
Ano: 1993 URL: http://archimer.ifremer.fr/doc/00271/38251/36437.pdf
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Haematological and physiological characteristics of diploid and triploid sea bass, Dicentrarchus labrax L. ArchiMer
Peruzzi, Stefano; Varsamos, Stamatis; Chatain, Beatrice; Fauvel, Christian; Menu, Bruno; Falguiere, Jean-claude; Severe, Armelle; Flik, Gert.
The purpose of this study was to determine whether diploid and triploid sea bass differed in terms of main haematological and physiological characteristics. Diploid and triploid fish were produced by sub-optimal pressure treatments and held in communal environments under standard rearing conditions. Total red blood cell count (RBCC), haemoglobin concentration (Hb), hematocrit (Hct), mean cell volume (MCV), mean cellular haemoglobin content (MCH), mean cell haemoglobin concentration (MCHC), plasma metabolites, osmotic pressure, gill Na+/K+-ATPase activity, electrolytes, cortisol, and 3,5,3'-triiodo-L-thyronine (T-3) were measured and compared. Triploidisation in sea bass led to an increase in erythrocyte size (32% in cytoplasm surface area, and 50% in...
Tipo: Text Palavras-chave: Dicentrarchus labrax; Sea bass; Triploid; Diploid; Physiology; Haematology.
Ano: 2005 URL: https://archimer.ifremer.fr/doc/2005/publication-508.pdf
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Approche experimentale de la croissance et de la morphogenese de la larve de rouget mullus surmuletus ArchiMer
Menu, Bruno.
Dans le cadre restreint d'un mémoire de DEA, nous avons fait un bilan des données acquises au COB depuis 1975 et réalisé une approche expérimentale de l'embryogénèse et du développement larvaire du rouget en élevage.
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Ano: 1977 URL: http://archimer.ifremer.fr/doc/00137/24871/22960.pdf
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Evaluation de l'effet de l'environnement et de l'alimentation sur l'apparition d'anomalies de développement chez l'alevin de bar (Dicentrarchus labrax) ArchiMer
Menu, Bruno; Robin, Jh; Gouillou-coustans, Marie-francoise.
Larvae from a natural spawn of sea bass were distributed into 3 larval rearing lines in 2 distant sites, after simulated or true transportation. The specific rearing methods in the specific rearing environment of each laboratory were used :starvation under darkness for 160 degrees days and first feeding on Artemia (PP) in the Mediterranean laboratory of Palavas;first feeding on rotifers at 75 degrees days in the laboratory of Brest (Brittany) in 250 liters (BB) tanks or 35 liters tanks (Bb) of a separate rearing line. In the 250 liters tanks in Brest, 2 additional treatments before first feeding on Artemia were tested :starvation up to 160 degrees days under darkness with no bubbling (BP);starvation up to 160 degrees days under continuous illumination with...
Tipo: Text Palavras-chave: Pisciculture; Élevage larvaire; Malformations; Effets de l'environnement; Alimentation; Fish culture; Larval rearing; Abnormalities; Environmental effects; Diet.
Ano: 1998 URL: http://archimer.ifremer.fr/doc/00272/38284/36472.pdf
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Ponte, incubation et développement larvaire du rouget de roche ( Mullus surmuletus ) en laboratoire ArchiMer
Menu, Bruno; Girin, Michel.
A batch of red mullet spawners, held in captivity, spawned for 3 years in a 20 m3 tank. The eggs were incubated between 9 and 18° C, and hatched normally. The relationship between incubation time and temperature was calculated. Several rearing trials were performed at 19° C, in 150 l tanks. SurvivaIs up to 32 days were obtained, but metamorphosis was not yet completed at that age. The corresponding growth curves were drawn, and the Iarval development of the species was studied in detail.
Tipo: Text
Ano: 1978 URL: http://archimer.ifremer.fr/doc/00138/24885/22976.pdf
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Flow cytometric determination of genome size in European seabass (Dicentrarchus labrax), gilthead seabream (Sparus aurata), thinlip mullet (Liza ramada), and European eel (Anguilla anguilla) ArchiMer
Peruzzi, Stefano; Chatain, Beatrice; Menu, Bruno.
The nuclear DNA content in Dicentrarchus labrax, Sparus aurata, Liza ramada, and Anguilla anguilla, was measured by flow cytometric analysis. Male human leukocytes were used as internal reference cells. Nucleated fish erythrocytes were stained simultaneously to human leukocytes with a staining buffer containing propidium iodide (PI). Nuclear DNA contents of target species were estimated in relation to an assigned value of 7.0 pg DNA for male human leukocytes. The DNA content/nucleus (+/- CI) was 1.55 +/- 0.02 pg for D. labrax, 1.90 +/- 0.03 pg for S. aurata, 1.57 +/- 0.02 pg for L. ramada, and 2.43 +/- 0.04 pg for A. anguilla. Intraspecific DNA content variations ranged from 0-9% and averaged around 4% in all taxa. The results did not evidence significant...
Tipo: Text Palavras-chave: Anguilla anguilla; Liza ramada; Sparus aurata; Dicentrarchus labrax; Teleosts; DNA content.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/publication-411.pdf
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Cryopreservation of sea bass (Dicentrarchus labrax) spermatozoa in experimental and production simulating conditions ArchiMer
Fauvel, Christian; Suquet, Marc; Dreanno, Catherine; Zonno, Vincenzo; Menu, Bruno.
A sperm cryopreservation protocol adapted from turbot, was tested on sea bass using either 250-mu L straws or 1.5-mL cryovials. A dilution to 1/3 in Mounib's extender and a cooling rate of 65 degrees C.min(-1) allowed frozen sperm to recover an initial motility similar to that of fresh sperm at thawing; however, significant differences in motility (P < 0.001, n = 10 fish semen) were observed at further post-activation times, the motility decrease being faster in thawed sperm. At the experimental scale, triplicate inseminations of 2-mL aliquots (approximately 2 000 eggs) showed a significant fertility decay of thawed sperm compared to that of fresh sperm (P < 0.01, n = 12 fish semen) when a discriminating 35.10(3) spermatozoa to egg ratio was applied....
Tipo: Text Palavras-chave: Dicentrarchus labrax; Sea bass; Cryobank; Insemination; Spermatozoa; Cryopreservation; Dicentrarchus labrax; Loup; Banque de sperme; Insémination; Cryoconservation; Cryoconservation.
Ano: 1998 URL: http://archimer.ifremer.fr/doc/1998/publication-866.pdf
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A shortcut method for sexing juvenile European sea bass, Dicentrarchus labrax L. ArchiMer
Menu, Bruno; Peruzzi, Stefano; Vergnet, Alain; Vidal, Marie-odile; Chatain, Beatrice.
The objective of this study was to develop a rapid and effective method of sexing juvenile sea bass with minimum labour and material. To this end, the gonad squash mount technique was applied along with macroscopic techniques for sexing a large number of experimental fish at the age of 215-275 days post fertilization (p.f.). At this age, 90% of the 3894 fish could be unambiguously sexed by macroscopic examination of their gonads, whereas the remaining proportion was identified using squash mount preparations (10%). The accuracy of the observations was measured up to classical histology procedures. Undifferentiated fish accounted for 0.1% of the total population only. The application of the squash mount technique holds out the prospect of considerable...
Tipo: Text Palavras-chave: Histology; Squash; Juvenile; Gonads; Seabass; Dicentrarchus labrax.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/publication-378.pdf
Registros recuperados: 8
Primeira ... 1 ... Última
 

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