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| Registros recuperados: 13.863 | |
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| Taris, Nicolas; Baron, S; Sharbel, Tim; Sauvage, Christopher; Boudry, Pierre. |
| The analysis of parentage using microsatellite markers is of increasing importance, notably in aquaculture genetic research where communal rearing of mixed families can be used to reduce unwanted environmental variance. We present here an optimization of parental genotype assessment for larvae or adults of the Pacific oyster, Crassostrea gigas, using a multiplex system of three microsatellite loci. In conjunction with a simple DNA extraction protocol, this method enables high throughput analyses of parentage in C. gigas. Using this method, we successfully determined the parentage of 93% (1224 out of 1318) of the progeny in a factorial cross between 3 females and 10 males. The inability to genotype the remaining 7% was due to DNA degradation of larvae... |
| Tipo: Text |
Palavras-chave: Oysters; Aquaculture; Parental assignment; High throughput; Larval DNA extraction; Multiplex. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-1814.pdf |
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| Viana,Blandina Felipe; Kleinert,Astrid de Matos Peixoto. |
| We analyzed aspects of the community structure of Apoidea of a restricted area of dunes with restinga vegetation in Salvador, Bahia, Brazil. Standardized samples were taken for one year, 3 times a month from 6:00 a.m. to 6:00 p.m. A total of 3983 individuals (3770 females and 213 males) of 49 species, grouped into 13 morpho-functional types and belonging to five families, were collected from flowers in its majority. The fauna of Abaeté is composed by large solitary bees, best represented by Anthophoridae followed by Apidae; Halictidae; Megachilidae and Colletidae. Bees were active throughout the year, with peaks of abundance in periods of low rainfall. Daily activity was greatest between 08:00 and 14:00 hours, when relative humidity was lower and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bee's abundance; Bee diversity; Community structure; Restinga and dunes; Morpho-functional groups; Northeast Brazil. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032005000300005 |
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| Morales Gutierrez, A. Carlos. |
| To ignore the historical perspective of socio-economical phenomena while looking ahead to the future in an attempt to raise expectations and set new challenges, can prove a risky move when approaching the cooperative movement as a whole. This is particularly so in the case of the European agricultural cooperatives. We expect them to play a relevant role in the overall panorama of a globalized world. The aim of this article is to trace the origins of the agricultural cooperative movement in seven European countries (Belgium, Denmark, France, Italy, The Netherlands, Portugal and the United Kingdom) and discuss the coincidences and differences which account for common problems with a view to avoiding them in future joint ventures. Some issues discussed here... |
| Tipo: Journal Article |
Palavras-chave: Economic history; History of micro enterprise; Cooperative enterprise; Agricultural markets; Agribusiness. |
| Ano: 2005 |
URL: http://purl.umn.edu/59711 |
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| Barker, Anna B.E.; Warren-Smith, A.K.. |
| Anecdotal evidence suggests that a horse’s prior fitness level has an effect on the horse’s ability to return to that previous level of fitness. This trial aimed to test this assumption which would benefit horse trainers to create individual fitness programs for horses. Standardised exercise testing was used to compare the progress of two groups of horses during weeks three and seven of a 14-week training program. Group A had undergone a similar training program twelve months previously and Group B had not. Plasma lactate samples and heart rate monitoring were used to assess the levels of fitness of the horses. Analysis of variance showed that there was no significant difference in post-exercise plasma lactate concentration between the groups. The horses... |
| Tipo: Article |
Palavras-chave: Horse; Fitness training; Heart rate; Blood lactate; Farm Management. |
| Ano: 2005 |
URL: http://purl.umn.edu/123137 |
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| Kopp, Joel; Cornette, Florence; Simonne, Charlotte. |
| The blue mussel, Mytilus edulis has been reared along the Normandy coast line since the 1960s. The gonadal cycle of this mussel species shows a sharp decrease in meat quality during the winter period after spawning. This decline in meat quality is so severe that sales have to be suspended from December to July. Another species of mussel, Mytilus galloprovincialis, which is reared in the lagoons along the French shore of the Mediterranean Sea has a different spawning cycle. An experiment was undertaken to study the meat quality of M. Galloprovincialis throughout the year after the spat were transferred from the Mediterranean Sea to the Normandy coast. This species showed an immediate adaptation to the gonadal cycle of M. edulis. Despite suggestions from... |
| Tipo: Text |
Palavras-chave: Meat quality; Mytilus galloprovincialis; Mytilus edulis; Gonadal cycle. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-422.pdf |
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| Schoney, Richard A.; Moeller, Christof. |
| Two efficient farms are constructed for the brown soils of Saskatchewan, Canada and for Mecklenburg, Germany based on producer panels. Both farms feature highly integrated cropping systems which take advantage of cropping synergies. However, farm risk is inherently different between the two because differences in 1) climate that gives rise to very different yield risk and cost structure, and 2) EU programs which offer fixed cash payments and stable sugar beet prices. As expected, risk is much higher for the Saskatchewan case farm - it has a chance of a negative cash flow of approximately one year in five. In sharp contrast, the Mecklenburg has very little chance of generating a negative cash flow. Hence, it is easy to understand why crop insurance and... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Risk and return; EV model; Saskatchewan and German grain farms; Crop Production/Industries. |
| Ano: 2005 |
URL: http://purl.umn.edu/24227 |
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| Nachimuthu, Gunasekhar; Kristiansen, Paul; Lockwood, Peter; Guppy, Chris. |
| Organic farming is an alternative to conventional farming for providing sustainable crops with high export demand. This review analyses research findings on organic farming in Australia, with an emphasis on soil health. Several reports have indicated that organic farm management generally improves soil physical properties in Australia and elsewhere. Although low nitrogen (N) availability can constrain yields, organic farmers can improve N supply through legume green manures. Plant available phosphorus (P) is a more serious limiting factor in organic farming, particularly in Australia with naturally low P levels. Phosphorus is less easily replaced in the soil than N, and there is a need for alternate sources of organic-certified P and methods to enhance P... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil quality. |
| Ano: 2005 |
URL: http://orgprints.org/4362/4/Nachimuthu_etal_4p_revised%2Ded.doc |
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| Wolf, Marianne McGarry; Carpenter, Scott; Qenani-Petrela, Eivis. |
| This research shows that the wine market in the California is segmented by age. The wine-consumption behavior of the California wine consumer differs between the Generation X consumer and those in Generation Y and Baby Boomers. There are differences in demographics, purchasing attitudes, and purchasing behaviors among wine consumers from different generations. The findings from this research demonstrate that it is increasingly important to develop marketing strategies that are segmented for the target wine consumer. Generation Y are young wine consumers who are especially important for the industry because they offer an opportunity for growththese younger generations are developing tastes now that are likely to last as they age. |
| Tipo: Journal Article |
Palavras-chave: Consumer/Household Economics. |
| Ano: 2005 |
URL: http://purl.umn.edu/26724 |
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| Boas, Ana Alice Vilas; Goldey, Patricia. |
| This paper describes a comparison on farmers’ participation in farmers’ organisations and attempts to explain why they prefer to carry out production and marketing activities by themselves. It also examines the implications of the findings for rural extension and related services. A total of 122 interviews were conducted with different categories of farmers and with the extension workers. The comparative analysis of two case studies (Cruz Alta and Pantano) showed that socio-economic characteristics were not very significant in determining the level of farmers’ participation in farmers’ organizations in Minas Gerais. The ability of managers emerged as one of the most important factors in the success or failure of farmers’ organizations. The presence of... |
| Tipo: Journal Article |
Palavras-chave: Rural extension; Associations; Management; Community/Rural/Urban Development; Teaching/Communication/Extension/Profession. |
| Ano: 2005 |
URL: http://purl.umn.edu/43922 |
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| Donnelly, William A.; Manifold, Diane. |
| The compilation of NTMs for goods and services described in this paper cover 53 countries, and it was constructed so as to focus upon members of the Asia Pacific Economic Cooperation forum (APEC) and the proposed Free Trade Area of the Americas (FTAA). The compilation is organized by country, category, generic barrier, specific barrier, sector, product, source, and year. It provides information on goods and services and gives the reference source for each entry. The information contained is expected to be of potential use to researchers and policymakers. |
| Tipo: Working or Discussion Paper |
Palavras-chave: International Relations/Trade. |
| Ano: 2005 |
URL: http://purl.umn.edu/15869 |
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| Mccombie, Helen; Ledu, Christophe; Phelipot, Pascal; Lapegue, Sylvie; Boudry, Pierre; Gerard, Andre. |
| We present a new method to produce tetraploid Crassostrea gigas by cytochalasin B inhibition of polar body 2 expulsion in diploid females crossed with tetraploid males. This offers a means of direct introgression of genetic characters from selected diploid to tetraploid lines, avoiding a triploid step. Offspring larval ploidy shifted over time and depended on size, with tetraploids more frequent among the smaller larvae and triploids among the large. Viable tetraploids were found at 4 and 6 months, indicating the technique was successful. The possibility that gynogenesis occurred was tested by microsatellite analysis to confirm the presence of paternally inherited alleles. These were present in all animals of the 2n x 4n + CB (female first) cross. However,... |
| Tipo: Text |
Palavras-chave: Oyster breeding; Gynogenesis; Polar body; Cytochalasin B; Polyploidy; Crassostrea gigas. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-632.pdf |
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| McDonald, Scott; van Schoor, Melt. |
| Following recent international oil price increases, there has been considerable interest in how this external factor can affect the South African economy. This paper reports results from a computable general equilibrium (CGE) analysis of an increase (up to 30 per cent) in international oil prices. Background information is provided, which puts the magnitude of the price variations in historical context. We describe the procedure used to adjust the social accounting matrix (SAM), which is used to calibrate the model, to account explicitly for crude oil. Then, the effects of the crude oil price increase are traced through the economy, from markets, industries through to factors, households and the government. Predictably, the shock hurts the economy: a 20... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2005 |
URL: http://purl.umn.edu/15633 |
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| Cavalcanti,Renata da Silva; Farias Neto,Severino Rodrigues de; Vilar,Eudésio Oliveira. |
| Most electrochemical reactors present reactions with the growth and departure of gas bubbles which influence on the reactor hydrodynamics and this study is usually complex, representing a vast field for research. The present paper had as objective to study a bi-phase (gas-liquid) system aiming to foresee the influence of departure of hydrogen bubbles generated on effective electrode surface situated on cathodic semi-cell. Nevertheless, it was idealized that the gas was injected into the semi cell, through the effective electrode surface With this hypothesis, it was possible to study, and numerically analyze, the hydrodynamic behavior of the hydrogen bubbles in the interior of the study domain, applying concepts of computational fluid dynamics by using the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hydrogen; Bubble; CFD; Finite volumes; Electrochemical reactor. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000400027 |
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| Gonçalves,Rodrigo B.; Melo,Gabriel A. R.. |
| Coletas sistemáticas de abelhas em uma área restrita no Parque Estadual de Vila Velha, Paraná, no período de outubro de 2002 a outubro de 2003, resultaram em 1552 espécimes pertencentes a 181 espécies. Estas espécies estão distribuídas em 58 gêneros, 24 tribos e 5 subfamílias. As plantas visitadas correspondem a 113 espécies, em 72 gêneros e 38 famílias. Megachile com 20 espécies foi o gênero mais rico e Ceratina o gênero mais abundante dentre os gêneros nativos. Apis mellifera foi a espécie mais coletada, correspondendo a 28% do total de indivíduos, e Bombus atratus foi a espécie mais abundante dentre as abelhas nativas. A riqueza e a equitabilidade nos meses foram variáveis, sendo março o mais rico e novembro o de maior equitabilidade. Apesar de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Apoidea; Campos gerais; Levantamento; Neotropical; Savana. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262005000400017 |
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| Chamoux,E.; Otis,M.; Gallo-Payet,N.. |
| The human adrenal cortex, involved in adaptive responses to stress, body homeostasis and secondary sexual characters, emerges from a tightly regulated development of a zone-specific secretion pattern during fetal life. Its development during fetal life is critical for the well being of pregnancy, the initiation of delivery, and even for an adequate adaptation to extra-uterine life. As early as from the sixth week of pregnancy, the fetal adrenal gland is characterized by a highly proliferative zone at the periphery, a concentric migration accompanied by cell differentiation (cortisol secretion) and apoptosis in the central androgen-secreting fetal zone. After birth, a strong reorganization occurs in the adrenal gland so that it better fulfills the newborn's... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Adrenal gland; Development; Human fetus; Extracellular matrix; Angiotensin II; Adrenocorticotropin. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005001000006 |
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| Bouet, Antoine; Decreux, Yvan; Fontagne, Lionel; Jean, Sebastien; Laborde, David. |
| In order to provide with a consistent assessment of protection across the world in 2001, the MAcMap-HS6 database includes ad valorem equivalent measure of tariff duties and tariff rate quotas for 163 countries and 208 partners, at the six-digit level of the Harmonized System (5,111 products), and accounting for all preferential agreements. We first describe the methodology used to compute and aggregate ad valorem-equivalent applied tariff duties, well suited for analytical purposes. Special emphasis is put in minimizing the endogeneity bias in the aggregation procedure, and in acknowledging structural differences in export specialization. We then overview applied protection across the world, in terms of average as well as distribution. Protection... |
| Tipo: Working or Discussion Paper |
Palavras-chave: International Relations/Trade. |
| Ano: 2005 |
URL: http://purl.umn.edu/18859 |
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| Registros recuperados: 13.863 | |
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