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| Registros recuperados: 58 | |
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| Peixoto,M.G.C.D.; Bergmann,J.A.G.; Fonseca,C.G.; Penna,V.M.; Pereira,C.S.. |
| Data on 1,294 superovulations of Brahman, Gyr, Guzerat and Nellore females were used to evaluate the effects of: breed; herd; year of birth; inbreeding coefficient and age at superovulation of the donor; month, season and year of superovulation; hormone source and dose; and the number of previous treatments on the superovulation results. Four data sets were considered to study the influence of donors elimination effect after each consecutive superovulation. Each one contained only records of the first, or of the two firsts, or three firsts or all superovulations. The average number of palpated corpora lutea per superovulation varied from 8.6 to 12.6. The total number of recovered structures and viable embryos ranged from 4.1 to 7.3 and from 7.3 to 13.8,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cattle; Zebu; Superovulation; Environmental effects; MOET nucleus. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352006000400019 |
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| Correia,Gisele Batista; Siqueira-Souza,Flávia Kelly; Freitas,Carlos Edwar de Carvalho. |
| The flood pulse is a key factor that drives the biota of large rivers with adjacent floodplains, but the direction and intensity of its effects are not uniform for all trophic guilds of fish. In this study, we tested the existence of intra- and inter-annual changes in the relative condition factors (kn) of three Curimatidae: Potamorhina altamazonica, Potamorhina latior, and Psectrogaster rutiloides. We used weight and length data from fish that were caught in eight floodplain lakes of the Rio Solimões. These data were from experimental fisheries during each season of the hydrological cycle: flooding, flood, drying, and dry from 2004, 2005, and 2006. In general, there are similar patterns of intra-annual changes for these three species, with the highest... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Weight-length relationship; Curimatidae; Environmental effects; Relative condition factor; Floodplain lakes. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000400101 |
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| Padilha,Alessandro Haiduck; Sattler,Aroni; Cobuci,Jaime Araújo; McManus,Concepta Margaret. |
| Heritability and genetic correlations for honey (HP) and propolis production (PP), hygienic behavior (HB), syrupcollection rate (SCR) and percentage of mites on adult bees (PMAB) of a population of Africanized honeybees were estimated. Data from 110 queen bees over three generations were evaluated. Single and multi-trait models were analyzed by Bayesian Inference using MTGSAM. The localization of the hive was significant for SCR and HB and highly significant for PP. Season-year was highly significant only for SCR. The number of frames with bees was significant for HP and PP, including SCR. The heritability estimates were 0.16 for HP, 0.23 for SCR, 0.52 for HB, 0.66 for PP, and 0.13 for PMAB. The genetic correlations were positive among productive traits... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Heritability; Genetic correlations; Environmental effects; Apis mellifera. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572013000200011 |
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| Killen, S. S.; Adriaenssens, B.; Marras, S.; Claireaux, Guy; Cooke, S. J.. |
| Repeatability of behavioural and physiological traits is increasingly a focus for animal researchers, for which fish have become important models. Almost all of this work has been done in the context of evolutionary ecology, with few explicit attempts to apply repeatability and context dependency of trait variation toward understanding conservation-related issues. Here, we review work examining the degree to which repeatability of traits (such as boldness, swimming performance, metabolic rate and stress responsiveness) is context dependent. We review methods for quantifying repeatability (distinguishing between within-context and across-context repeatability) and confounding factors that may be especially problematic when attempting to measure... |
| Tipo: Text |
Palavras-chave: Environmental effects; Intraclass correlation; Personality; Phenotypic plasticity; Reaction norm; Temperature. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00337/44823/44372.pdf |
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| Planque, Benjamin; Bellier, Edwige; Lazure, Pascal. |
| Large amplitude variations in recruitment of small pelagic fish result from interactions between a fluctuating environment and population dynamics processes such as spawning. The spatial extent and location of spawning, which is critical to the fate of eggs and larvae, can vary strongly from year to year, as a result of changing population structure and environmental conditions. Spawning habitat can be divided into 'potential spawning habitat', defined as habitat where the hydrographic conditions are suitable for spawning, 'realized spawning habitat', defined as habitat where spawning actually occurs, and 'successful spawning habitat', defined as habitat from where successful recruitment has resulted. Using biological data collected during the period... |
| Tipo: Text |
Palavras-chave: Sardine; Potential spawning habitat; Generalized additive models; Environmental effects; Bay of Biscay; Anchovy. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2180.pdf |
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| Portier, R; Meyers, S. |
| The environmental effect and fate of several agricultural and industrial source toxicants were evaluated in controlled laboratory microcosm systems in the presence of the aminopolysaccharide polymer, chitin. Toxicants examined included methyl parathion, phenol, pentachlorophenol, 2,4 dichlorophenol, 1,2 dichloroethane and Kepone. Microcosm operating parameters, including pH/Eh, salinity, temperature, flow rate and sediment/water interface conditions, were based on comparable in situ measurements. Fate analysis predictions were based on mineralization of the parent toxicant compound as measured by chromatographic analysis or super(14)CO sub(2) expiration. Chitin, amended to continuous flow microcosms, promoted either cometabolic or cooxidative... |
| Tipo: Text |
Palavras-chave: Controlled conditions; Chemical pollutants; Industrial wastes; Pesticides; Metabolism; Food webs; Biodegradation; Ecosystems; Microorganisms; Environmental effects; Brackishwater pollution; Estuaries; Toxicants; Chitin. |
| Ano: 1984 |
URL: http://archimer.ifremer.fr/doc/1984/acte-1011.pdf |
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| Galgani, Francois; Benyamin, Y; Vanworhmoudt, A; Cecaldi, J. |
| Proteolytic enzymes of hepatopancreas of six species of peneids (Penaeus kerathurus, P. japonicus, P. monodon, P. stylirostris, P. merguiensis and P. vannamei ) have been studied. Some of their physiological variations have been characterised. Increase in acclimation temperature of crustaceans enhances increase of specific activities of proteases. Variations of salinity does not modify specific activities, nor quantities of trypsin, nor electrophoretic patterns of these different proteases. |
| Tipo: Text |
Palavras-chave: Penaeus kerathurus; Penaeidae; Malacostraca; Diets; Growth; Larval development; Life cycle; Acclimation; Environmental effects; Digestive glands; Enzymatic activity; Salinity effects; Temperature effects; Enzymes; Endocrinology; Digestion; Développement larvaire; Croissance; Cycle d'intermue; Carboxypeptidase A and B; Leucine aminopeptidase; Chymotrypsin; Trypsine; Enzymes digestives; Homarus ganmarus; Palaemon serratus; P. vannamei; P. merguiensis; P. stylirostris; P. monodon; P. japonicus; Penaeus keratkurus. |
| Ano: 1983 |
URL: http://archimer.ifremer.fr/doc/1983/acte-1195.pdf |
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| Prudence, Marie. |
| Two amylase genes, A and B, from the oyster Crassostrea gigas were characterized. Using PCR-RFLP, 6 and 4 alleles, respectively, were described for the amylase genes A and B. The roles of A and B amylase genes were investigated experimentally. They are expressed during larval and adult stages, and A transcripts are more abundant than B. The A transcript increases significantly with temperature, in high trophic conditions. However, A and B transcript levels do not change when food quantity increases although amylase activity augments. The level of B is correlated with dietary starch quantities, whereas the amount of A appears to remain constant ; simultaneously amylase activity decreases and the KM increases. These results suggest that expression of B is... |
| Tipo: Text |
Palavras-chave: Enzymatic analyse; Genetic polymorphism; Genes; Nutrition; Growth; Environmental effects; Oysters; Amylases; Amylases; Analyse enzymatique; Polymorphisme génétique; Gènes; Nutrition; Croissance; Effets de l'environnement; Huîtres; Amylases; Amylases. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/these-1700.pdf |
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| Ulu, K. Narynbek; Huneau, B.; Le Gac, Pierre-yves; Verron, E.. |
| Fatigue properties of filled natural rubber in seawater environment are investigated by uniaxial fatigue and crack propagation experiments, and the damage is analyzed by scanning electron microscopy. The behavior under relaxing and non-relaxing loading conditions is studied and the results are compared to those obtained in air environment. For relaxing loading conditions, fatigue behavior is the same in both environments. Under non-relaxing conditions at large strain levels, for which the influence of strain-induced crystallization is important, fatigue life is longer in seawater. Such behavior could be explained by increased internal temperatures of specimens tested in air due to lower heat conductivity of air as compared to seawater. Such conclusion is... |
| Tipo: Text |
Palavras-chave: Natural rubber; Fatigue; Environmental effects; Seawater; Strain-induced crystallization. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00324/43523/43055.pdf |
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| Nigeria with a total area of 923,800 sq km occupies about 14% of land area in West Africa. The country lies between 4oN and 14oN, and between 3oE and 15oE. It is bordered respectively in the north, east, and west by Niger, the Cameroon, and Benin Republic, while the Gulf of Guinea, an arm of the Atlantic Ocean, forms the southern border. Most of Nigeria is covered with Pre- Cambrian rocks, but there are also metamorphic and sedimentary rocks of Eocene times as well as volcanic rocks. In general, three types of geologic structures exist in Nigeria, namely, areas of uplift, basins of sedimentation, and isolated volcanic areas. The areas of uplift are made up of the oldest rocks in Nigeria - the basement complex rocks. The basins of sedimentation are the... |
| Tipo: Report |
Palavras-chave: Environmental effects; Climate change; Http://aims.fao.org/aos/agrovoc/c_35367. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/794 |
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| Registros recuperados: 58 | |
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