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| Registros recuperados: 165 | |
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| Chong-robles, Jennyfers; Charmantier, Guy; Boulo, Viviane; Lizarraga-valdez, Joel; Enriquez-paredes, Luis M.; Giffard-mena, Ivone. |
| The euryhaline white shrimp Litopenaeus vannamei lives in both coastal and oceanic areas through ontogeny. Its osmoregulation pattern and variations in its tolerance to salinity are partially known from several studies under different experimental conditions (developmental stages, salinities and acclimation procedures). Although L. vannamei is recognized as one of the most euryhaline penaeid species, with adults and juveniles exhibiting an hyper-hypo-osmoregulatory pattern and being able to tolerate a wide salinity range, little is known on larval and early postlarval strategies to cope with salinity fluctuations. In order to establish their euryhalinity range and to fully understand the ontogenetic changes in L. vannamei osmoregulatory pattern, we... |
| Tipo: Text |
Palavras-chave: Osmotic pressure; Hypo-hyper osmoregulation; Osmotic stress; Survival; Crustacean; Larvae. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00169/28068/26283.pdf |
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| Brind'Amour, Anik; Bourget, Edwin; Tremblay, Rejean. |
| On the western coast of the Atlantic, according to the literature, 2 distinct groups of Semibalanus balanoides occur with a distinct interface near the Miramichi Estuary, New Brunswick, in the Gulf of St. Lawrence. On each side of this interface, the groups are characterized by clinal variations for MPI (mannose-6-phosphate isomerase) and GPI (glucose-6-phosphate isomerase). The present study was carried out to determine whether selection occurs at this interface, to establish how early in the sessile life period it occurs and to examine the selecting forces involved. Reciprocal transplant experiments of newly settled individuals to both sides of the interface were carried out. No significant differences specifically linked to source or destination were... |
| Tipo: Text |
Palavras-chave: Semibalanus; Genetics; Selection; Fecundity; Growth rate; Survival. |
| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/00048/15970/13410.pdf |
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| Petton, Bruno. |
| Depuis 2008, des mortalités massives d’huîtres creuses âgées de moins d’un an sont relevées sur le littoral français dès que la température de l’eau de mer atteint le seuil de 16°C. Ces mortalités de naissains sont associées à la détection du virus OsHV-1 μVar. Des travaux de qualification zoo-sanitaire menés depuis 2010 ont montré qu’un lot de naissains issus du captage naturel sur deux était infecté par le virus bien avant l’apparition des mortalités dans le milieu naturel, mais qu’a contrario les naissains d’écloserie expertisés présentaient une fréquence plus faible de portage latent. Dans ce contexte de crise zoo-sanitaire chronique, l’objectif de notre étude consistait à obtenir une information du statut zoo-sanitaire OsHV-1 μVar des populations de... |
| Tipo: Text |
Palavras-chave: Huitre creuse; Naissain; Survie; OsHV-1 μ Var; Epreuve thermique.; Pacific oyster; Spat; Survival; OsHV-1 μVar; Thermal challenge. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00335/44586/44304.pdf |
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| Degremont, Lionel; Bedier, Edouard; Soletchnik, Patrick; Ropert, Michel; Huvet, Arnaud; Moal, Jeanne; Samain, Jean-francois; Boudry, Pierre. |
| Summer mortality has been reported in the Pacific oyster, Crassostrea gigas, for many years in different parts of the world. The causes of this phenomenon are complex. The multidisciplinary program "MOREST", coordinated by IFREMER, was initiated to understand the causes of summer mortality of Crassostrea gigas juveniles in France and to reduce its impact on oyster production. Within this program, three successive groups of bi-parental families were bred in a hatchery in 2001 and placed in the field during summer in three sites (Ronce, Riviere d'Auray, and Baie des Veys). This paper reports the relative importance of family, site and field placement timing for three characters of major importance for oyster production: survival, growth, and yield. At the... |
| Tipo: Text |
Palavras-chave: Juvenile; Crassostrea gigas; Oysters; Yield; Growth; Survival. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-1693.pdf |
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| Blair, Tammy; Castell, Fisheries And Oceans Canada; Neil, Steven; D'Abramo, Louis; Cahu, Chantal; Harmon, Paul; Ogunmoye, Kehinde. |
| Until recently, it was considered impossible to feed newly hatched marine fish species with a compound diet. Substituting a compound diet for live prey was performed several weeks after hatching, depending on the species. Compound diets were well ingested at the early stage but larvae died with a gut full of food, suggesting that larvae were unable to digest the compound diet. The hypothesis was that younger larvae have insufficient digestive enzymes to thrive on compound diets, and that exogenous enzymes, provided from live prey, are necessary for early stages. The organogenesis of marine fish larvae is not completely achieved at hatching and histological studies have revealed that the anatomy of the digestive tract undergoes developmental changes over... |
| Tipo: Text |
Palavras-chave: Highly unsaturated fatty acids; Essential fatty acids; Survival; Growth; Artemia; Brachionus plicatilis; Microdiet; Haddock larvae. |
| Ano: 2003 |
URL: https://archimer.ifremer.fr/doc/2003/publication-445.pdf |
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| Saenz-romero, Cuauhtemoc; Lamy, Jean-baptiste; Ducousso, Alexis; Musch, Brigitte; Ehrenmann, Francois; Delzon, Sylvain; Cavers, Stephen; Chalupka, Wladyslaw; Dagdas, Said; Hansen, Jon Kehlet; Lee, Steve J.; Liesebach, Mirko; Rau, Hans-martin; Psomas, Achilleas; Schneck, Volker; Steiner, Wilfried; Zimmermann, Niklaus E.; Kremer, Antoine. |
| How temperate forests will respond to climate change is uncertain; projections range from severe decline to increased growth. We conducted field tests of sessile oak (Quercus petraea), a widespread keystone European forest tree species, including more than 150,000 trees sourced from 116 geographically diverse populations. The tests were planted on 23 field sites in six European countries, in order to expose them to a wide range of climates, including sites reflecting future warmer and drier climates. By assessing tree height and survival, our objectives were twofold: (1) to identify the source of differential population responses to climate (genetic differentiation due to past divergent climatic selection versus plastic responses to ongoing climate... |
| Tipo: Text |
Palavras-chave: Climatic change; Climatic transfer distance; Mixed model; Quercus petraea; Survival; Tree growth. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00358/46967/46882.pdf |
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| Pernet, Fabrice. |
| Le naissain d’huître creuse Crassostrea gigas est touché chaque année depuis 2008 par des mortalités causées par un microvariant de l’ostreid herpesvirus 1 (OsHV-1 μVar). Plusieurs études montrent que ces évènements de mortalité se produisent préférentiellement lorsque la température de l’eau est comprise entre 16°C et 24°C. Par conséquent, une exposition rapide des huîtres infectées par OsHV-1 à des températures supérieures à 24°C pourrait limiter les mortalités causées par le virus. Il est proposé de (1) vérifier l’hypothèse selon laquelle l’exposition à haute température réduit la mortalité des huîtres infectées par OsHV-1, et (2) déterminer si les animaux qui ont survécu suite à l’infection par OsHV-1 et au traitement thermique sont... |
| Tipo: Text |
Palavras-chave: Epidémiologie; Huître; OsHV-1; Risque; Survie; Température; Epidemiology; Oysters; OsHV-1; Risk; Survival; Temperature. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00434/54574/55953.pdf |
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| Degremont, Lionel; Nourry, Max; Maurouard, Elise. |
| The ostreid herpesvirus 1 (OsHV-1) is one of the major pathogens affecting the Pacific oyster Crassostrea gigas, and numerous mortality outbreaks have been observed worldwide. We report the first results of our experimental breeding program using mass selection focused on survival and resistance to OsHV-1 after four generations of selection for two lines. These lines originated from two stocks of adult wild oysters sampled from the Marennes-Oléron Bay in 2008. Each line was spawned in February 2009 to produce the base populations. Both lines were then either protected from OsHV-1 or tested in the field in 2009 where they were exposed to OsHV-1. For each line during 2010 to 2013, one generation per year was produced using either the survivors of the... |
| Tipo: Text |
Palavras-chave: Survival; Crassostrea gigas; Realized heritability; Selection response; OsHV-1; Disease resistance. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00266/37751/36064.pdf |
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| Lok, A; Acarli, S.; Serdar, S; Kose, A; Goulletquer, Philippe. |
| The growth and survival rates of four size classes (10, 15, 20, and 25 mm) of bearded horse mussels (Modiolus barbatus) grown in net bags in Mersin Bay, Izmir, were assessed from May 2001 to May 2002. Temperature ranged 14-23 degrees C, average chlorophyll a was 3.34 +/- 0.35 mu g/l, average total particulate matter 12.43 +/- 0.68 mg/l, and average particulate organic carbon 210.23 +/- 18.00 mu g/l. Shell lengths increased 23.05, 19.76, 19.40, and 12.09 mm in the four classes (from small to large) and live weights increased 13.21, 10.46, 10.06, and 4.96 g, respectively. Survival rates ranged from 25% in the smallest size class to 87.5% in the 20 mm class (p < 0.05). Mussels grew significantly fastest in the smallest size class (p < 0.05). |
| Tipo: Text |
Palavras-chave: Turkey; Survival; Modiolus barbatus; Growth; Bearded horse mussel. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-2143.pdf |
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| Degremont, Lionel; Ernande, Bruno; Bedier, Edouard; Boudry, Pierre. |
| The multidisciplinary project "MOREST" aims to improve our understanding of causes of summer mortality in Crassostrea gigas juveniles in France and to reduce its impact on oyster production. As pail of the MOREST project, 43 full-sib families nested within 17 half-sib families were produced, planted out and tested in 3 sites during summer 2001 to assess to what extent genetic variability exists for this trait. A strong genetic basis was found for survival as narrow-sense heritability estimates ranged from 0.47 to 1.08, with higher values in sites where summer mortality was higher. Genetic correlations across sites were positive and very high for survival, indicating no genotype by environment interaction. In contrast, lower genetic variation was observed... |
| Tipo: Text |
Palavras-chave: Growth; Survival; Juveniles; Heritability; Crassostrea gigas. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2457.pdf |
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| Goyard, Emmanuel; Goarant, Cyrille; Ansquer, Dominique; Brun, Pierre; De Decker, Sophie; Dufour, Robert; Galinie, C; Peignon, Jean-marie; Pham, Dominique; Vourey, Elodie; Harache, Yves; Patrois, Jacques. |
| Two populations of the Latin American shrimp Penaeus (Litopenaeus)stylirostris domesticated in Hawaii and in New Caledonia were previously shown to be genetically differentiated and proven highly inbred. In New Caledonia, where different Vibriosis affect shrimp production and antibiotic use is banned in growing ponds, the Hawaiian population was introduced to increase the allelic variability available for local shrimp farmers and start a genetic improvement program. Growth and survival rates of the two pure populations and the two-way F-1-hybrids obtained by breeding Hawaiian animals with New Caledonian animals were assessed in several simple experiments (earthen ponds, floating cages and experimental infection challenges) during two years on two... |
| Tipo: Text |
Palavras-chave: Vibriosis; Survival; Growth; Penaeus Litopenaeus stylirostris; Shrimp; Cross breeding; Genetic improvement. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4316.pdf |
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| Tamazouzt, Lakhdar; Chatain, Beatrice; Fontaine, Pascal. |
| The influence of interaction between light intensity and tank wall colours on survival and growth of perch larvae (Perca fluviatilis L.) was investigated for 15 days after hatching. Three light intensities (250, 400 and 800 Ix) and four wall colours (black, dark grey, light grey and white) were used. At the end of the experiment, survival rates ranged between 1% and 26%, and varied according to the different treatments (P = 0.0001; df = 11). A global effect of light intensity was detected(P = 0.0001; df = 2) and the highest survival rate was observed under 250 Ix. Survival was also influenced by the tank wall colour(P = 0.0001; df = 3): light grey showed the best result (17%). The greatest growth in weight and length was observed in tanks with light grey... |
| Tipo: Text |
Palavras-chave: Growth; Survival; Light level; Tank colour; Larvae; Eurasian perch. |
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/2000/publication-505.pdf |
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| Guilbaud, Morgan; Chafsey, Ingrid; Pilet, Marie-france; Leroi, Francoise; Prevost, Herve; Hebraud, Michel; Dousset, Xavier. |
| Aims: To investigate the effect of liquid smoke on growth, survival, proteomic pattern and haemolytic potential of Listeria monocytogenes. Methods and Results: Growth and survival curves were recorded in brain-heart infusion broth supplemented with three concentrations of liquid smoke. L. monocytogenes growth was inhibited in the presence of 15 mu g ml(-1) phenol while a rapid decrease in cell viability occurred in the presence of 30 mu g ml(-1) phenol. The proteome of L. monocytogenes cytosoluble proteins was slightly modified after 2-h incubation with 30 mu g ml(-1) phenol but no protein already characterized in response to other known stresses was induced, except the protease ClpP. Liquid smoke inhibited the haemolytic potential without affecting hly... |
| Tipo: Text |
Palavras-chave: Survival; Stress; Proteome analysis; Listeria monocytogenes; Liquid smoke; Haemolysis. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4522.pdf |
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| Registros recuperados: 165 | |
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