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Registros recuperados: 7.618
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De edelherthorzel Cephenemyia auribarbis gekweekt (Diptera: Oestridae) Naturalis
Aartsen, B. van; Zeegers, Th..
The rearing of the botfly Cephenemyia auribarbis (Diptera: Oestridae) After several failures we finally succeeded in rearing botflies Cephenemyia from third-instar larvae. From a red deer shot at 13 March 1998 about one hundred larvae of Cephenemyia auribarbis (Meigen, 1824) were collected. Ten individuals reached the pupal stage. After 22 days, one fullgrown male died in the pupa, and two males emerged and lived for 17 and 18 days respectively. This is one of the few recorded succesful attempts to rear botflies.
Tipo: Article / Letter to the editor Palavras-chave: Insecta; Diptera; Oestridae; Cephenemyia auribarbis; Nederland; Verspreiding; 42.75.
Ano: 1999 URL: http://www.repository.naturalis.nl/record/209799
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More empirical evidence on the adoption of chick peas in Western Australia. or: Different ways of thinking about nothing. AgEcon
Abadi Ghadim, Amir K.; Burton, Michael P.; Pannell, David J..
Tipo: Presentation Palavras-chave: Crop Production/Industries.
Ano: 1999 URL: http://purl.umn.edu/121986
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Contamination de l'etang de Thau par Alexandrium tamarense. Episode de novembre a decembre 1998 ArchiMer
Abadie, Eric; Zouher, Amzil; Belin, Catherine; Comps, Marie-annick; Elziere-papayanni, Panayota; Lassus, Patrick; Le Bec, Claude; Marcaillou-le Baut, Claire; Nezan, Elizabeth; Poggi, Robert.
A bloom of the toxic dinoflagellate Alexandrium tamarense was observed for the first time in Thau iagoon between November and December 1998. Maximum cell concentrations detected in shellfish farming areas (85 000 Cells/1) were high enough to make mussels and clams unsuitable for human consumption (max. 850 ug. STX eq.100 g'1) while toxic levels in oysters did not exceed, or even reach, the international public health threshold established for PSP toxins. This event, new to French Mediterranean waters, was investigated by both local and national veterinary services and by the Ifremer teams involved in the National Monitoring Network for Phytoplankton and Phycotoxines (Réphy). The chronological and operational description of the event was compared with data...
Tipo: Text Palavras-chave: Alexandrium; Monitoring; Toxic dinoflagellates; Thau lagoon; Alexandrium; Surveillance; Dinoflagellés toxiques; Etang de Thau.
Ano: 1999 URL: http://archimer.ifremer.fr/doc/1999/rapport-884.pdf
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A core subset of Brazilian maize germplasm. Repositório Alice
ABADIE, T.; ANDRADE, R.V. de; CORDEIRO, C.; MAGALHAES, J.R.; PARENTONI, S. N..
1999
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Milho; Germoplasma; Melhoramento; Brasil; Brazil; Zea mays; Core collection; Germplasm; Breeding.
Ano: 1999 URL: http://www.alice.cnptia.embrapa.br/handle/doc/483563
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Cytogenetic and molecular analyses of Oryza sativa L. x O. australiensis Domin. and O. sativa L. x O. brachyantha A. Chev. et Roehr derivatives International Rice Research Institute
Abbasi, Fida M..
xv, 119 leaves : ill. Thesis (Ph.D.) -- University of the Philippines at Los Baños
Tipo: Thesis Palavras-chave: Rice; Cytogenetics; Hybrids; Wild rice; Plant breeding; Molecular biology.
Ano: 1999 URL: http://hdl.handle.net/123456789/536
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Een nieuw kranswier voor Nederland duikt op in Twents natuurherstelproject: Nitella gracilis (Smith) Agardh (Sierlijk glanswier) Naturalis
Abbink-Meijerink, Corry G.; Eysink, Fons Th.W..
In the Netherlands, Nitella gracilis was recorded for the first time in 1998. It appeared in a nature development project in the nature reserve Stroothuizen close by the Dutch-German border in the east of the Netherlands. On this location Nitella gracilis appeared in a nature development project.
Tipo: Article / Letter to the editor
Ano: 1999 URL: http://www.repository.naturalis.nl/record/528100
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CAN U.S. AGRICULTURE PRODUCE THE BASIC FOODSTUFFS CONSISTENT WITH THE DIETARY GUIDELINES? AgEcon
Abbott, Philip C..
Tipo: Conference Paper or Presentation Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 1999 URL: http://purl.umn.edu/32904
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Using a decision theoretic approach to choose among alternative import protocols for an import competing commodity AgEcon
Abdalla, Ali; Rodriguez, Gil; Heaney, Anna.
The global push toward free trade and the consequent rise in volume of imports from a wider range of countries incurs the likelihood of introducing unwanted pathogens. Given that a zero-risk quarantine policy is not possible, there are tradeoffs between the gains from international trade and the potential costs to society of disease incursions. The aim in this paper is to demonstrate a means for choosing among alternative import protocols through an economic model. The economic modeling approach applied to a stylised set of import protocols was a two step process. First, the gains and losses to consumers and producers, including costs of disease, were estimated for each import protocol. In the second step, three decision rules — minimax, minimin and...
Tipo: Presentation Palavras-chave: Demand and Price Analysis; International Relations/Trade.
Ano: 1999 URL: http://purl.umn.edu/123752
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PACKAGING INDUSTRY IN THE REPUBIC OF UZBEKISTAN AgEcon
Abduganiyev, Abdukakhkhor A..
The objective of this study is to analyse the supply and demand for food and drink packaging products in Uzbekistan, and the role of government in supporting the packaging sector. The report is divided into 8 sections. Following this introduction is a section on problem definition. Analysis is divided into 4 sections: demand for packaging products, supply of packaging products, foreign currency expenditure, and waste management. The report finishes off with conclusions and recommendations regarding the role of government in supporting the packaging sector.
Tipo: Working or Discussion Paper Palavras-chave: The Republic of Uzbekistan; Uzbek Industry; Package Industry; Fruit; Vegetable and Wine Association Institute; Food Industry Association; Meat and Dairy Association; Oil; Fat and Tobacco Association; Building Materials Concern (glass production).; Agribusiness.
Ano: 1999 URL: http://purl.umn.edu/23968
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PROCESSING SECTOR IN THE REBUBLIC OF UZBEKISTAN AgEcon
Abduganiyev, Abdukakhkhor A..
The objective of this study is to analyse the supply and demand for food and drink packaging products in Uzbekistan, and the role of government in supporting the packaging sector. The report is divided into 8 sections. Following this introduction is a section on problem definition. Analysis is divided into 4 sections: demand for packaging products, supply of packaging products, foreign currency expenditure, and waste management. The report finishes off with conclusions and recommendations regarding the role of government in supporting the packaging sector.
Tipo: Working or Discussion Paper Palavras-chave: Republic of Uzbekistan Uzbek Industry Package Industry Fruit; Vegetable and Wine Association Institute Food Industry Association Meat and Dairy Association Oil; Fat and Tobacco Association Building Materials Concern glass production Agribusiness.
Ano: 1999 URL: http://purl.umn.edu/23974
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CO-OPERATIVES IN THE REPUBlIC OF UZBEKISTAN AgEcon
Abduganiyev, Abdukakhkhor A..
The development of farmers' producer co-operatives, in the privet sector, can make a significant contribution to the improvements that are urgently required in agricultural production of Uzbekistan. Farmers' co-operatives can provide input-supply, marketing and processing operations in the private sector. In this report, relevant areas within the agricultural sector were reviewed, constraints identified and recommendations made for the future development of farmers' co-operatives in Uzbekistan.
Tipo: Working or Discussion Paper Palavras-chave: Agribusiness.
Ano: 1999 URL: http://purl.umn.edu/24009
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An Empirical Investigation of Short and Long-run Agricultural Wage Formation in Ghana AgEcon
Abdulai, Awudu; Delgado, Christopher L..
This paper investigates empirically the factors that influence real agricultural wage rates in Ghana, based on 1957 to 1991 data. The Johansen cointegration framework is used to examine long-run relationships among agricultural and urban wage rates, the domestic terms of trade between agriculture and nonagriculture, urban unemployment, capital stock in agriculture and the size of the rural population. An error correction model is then used to investigate short-run dynamic relationships among the variables. The results show that: (1) there is only one stable equilibrium relationship among agricultural wage rates and their determinants in the long-run; (2) a 1 percent change in the domestic terms of trade between agriculture and non-agriculture leads to a...
Tipo: Working or Discussion Paper Palavras-chave: Income; Ghana; Agriculture; Economic Aspects; Labor and Human Capital.
Ano: 1999 URL: http://purl.umn.edu/97382
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ESTIMATION OF RISK AVERSION COEFFICIENTS FOR DRYLAND WHEAT AND IRRIGATED CORN ENTERPRISES IN KANSAS AgEcon
Abdulkadri, Abdullahi O.; Langemeier, Michael R..
The risk attitudes of dryland wheat and irrigated corn enterprises in Kansas have been examined in this paper using the nonlinear mean-standard deviation approach. Our results showed that dryland wheat enterprises are characterized by increasing absolute and increasing relative risk aversion. The level of wealth is noted to have an impact on risk attitudes.
Tipo: Conference Paper or Presentation Palavras-chave: Crop Production/Industries; Risk and Uncertainty.
Ano: 1999 URL: http://purl.umn.edu/21658
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Use of MEDITS trawl survey data and commercial fleet information for the assessment of some Mediterranean demersal resources ArchiMer
Abella, Alvaro; Belluscio, Andrea; Bertrand, Jacques; Carbonara, Pier Luigi; Giordano, Daniela; Sbrana, Mario; Zamboni, Ada.
An assessment of the state of the fisheries of hake, red mullet and Norway lobster was carried out by using trawl survey data from the MEDITS research programme. The assessment was performed by means of the application of a composite model utilising the total mortality rate Z as a direct index of fishing effort. The studied area covered the whole western Italian coast (Ligurian and Tyrrhenian seas) and the eastern coasts of Corsica. The area was divided into twelve sub-areas, considered to be of similar ecological characteristics with similar initial productivity but considered to experience different rates of exploitation. Available information on fishing fleets and their geographic distribution was used in creating sub-areas. For each one of these...
Tipo: Text Palavras-chave: Modèles composites; Estimation des stocks; Merluccius merluccius; Mullus barbatus; Nephrops norvegicus; Méditerranée; Composite models; Stock assessment; Merluccius merluccius; Mullus barbatus; Nephrops norvegicus; Mediterranean sea.
Ano: 1999 URL: http://archimer.ifremer.fr/doc/00188/29876/28360.pdf
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Les insectes des monts Mandara : le regard des Mofu-Diamaré et le regard de l'entomologiste IRD
Aberlenc, H.P.; Deguine, J.P..
Le glossaire (encore incomplet) du vocabulaire des Mofu de Douvangar recense près de 140 mots désignant des insectes et autres anthropodes. Ce vocabulaire est analysé d'un point de vue exclusivement entomologique. Certains mots peuvent être rapprochés des taxons de la classification zoologique (au niveau des groupes espèce, sous-famille, famine ou ordre). Mais serait-il pertinent de confondre des concepts issus d'approches aussi différentes de la nature ? Il ne suffit pas qu'un terme vernaculaire désigne un animal ou un groupe d'animaux précis pour être assimilable à un taxon ! Un taxon est un concept qui n'existe que dans le cadre d'une théorie scientifique. Les Mofu ne nomment pas tous les insectes qu'ils côtoient : certains les intéressent beaucoup et...
Tipo: Text Palavras-chave: INSECTE; TAXONOMIE; ENTOMOLOGIE GENERALE; ANTHROPOLOGIE; LINGUISTIQUE; VOCABULAIRE; LANGUE VERNACULAIRE; TERMITE; INSECTE NUISIBLE; PARASITE; ETHOLOGIE; MYTHOLOGIE.
Ano: 1999 URL: http://www.documentation.ird.fr/hor/fdi:010020138
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A new species of Pseudoniphargus (Crustacea, Amphipoda) from subterranean water of northeastern Morocco: Historical biogeography and evolutionary aspects Naturalis
Abiari, A. Fakher el; Oulbaz, Z.; Messouli, M.; Coineau, N..
A new species of Pseudoniphargus, P. longiflagellum (Crustacea, Amphipoda) is described from subterranean fresh water of the Riftan region of Morocco. This species is closely related to the group P. ruffoi-P. longipes, which shares several apomorphic characters. The two-step model of colonization and evolution provides an understanding of the origin and the age of this stygobiont. P. longiflagellum is derived from marine ancestors that lived in the coastal groundwater of the Tethyan South-Rifian channel during the Miocene Tortonian period. The regression of this corridor during the late Tortonian period or at the beginning of the Messinian period may have played a major role in the evolutionary history through vicariance.
Tipo: Article / Letter to the editor Palavras-chave: Systematics; Historical biogeography; Crustacea; Groundwater Amphipoda; Pseudoniphargus; Morocco.
Ano: 1999 URL: http://www.repository.naturalis.nl/record/534391
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Water column and recent sediment data on diatoms and coccolithophorids, off Portugal, confirm sediment record of upwelling events ArchiMer
Abrantes, F; Moita, Mt.
Diatom and coccolithophorid abundance and diatom assemblage composition found in the water column along the Portuguese margin, during upwelling and non-upwelling conditions, are compared to the distribution patterns observed in the recent sediments from the same area. The water column results indicate a one order of magnitude increase in phytoplankton biomass during upwelling conditions (summer), with diatoms being the most important contributors. Coccolithophorids, on the contrary, dominate the phytoplankton in winter (non-upwelling), The comparison of the upwelling and non-upwelling spatial distribution of these phytoplankton groups to their sedimentary record reveals the sediment record as a reflection of the upwelling situation, preserving most of its...
Tipo: Text Palavras-chave: Upwelling; Portugal; Diatomée; Colonne d'eau; Sédiment; Upwelling; Portugal; Diatom; Water column; Sediment.
Ano: 1999 URL: http://archimer.ifremer.fr/doc/00325/43630/43253.pdf
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Water column and recent sediment data on diatoms and coccolithophorids, off Portugal, confirm sediment record of upwelling events ArchiMer
Abrantes, F; Moita, Mt.
Diatom and coccolithophorid abundance and diatom assemblage composition found in the water column along the Portuguese margin, during upwelling and non-upwelling conditions, are compared to the distribution patterns observed in the recent sediments from the same area. The water column results indicate a one order of magnitude increase in phytoplankton biomass during upwelling conditions (summer). with diatoms being the most important contributors. Coccolithophorids, on the contrary, dominate the phytoplankton in winter (non-upwelling). The comparison of the upwelling and non-upwelling spatial distribution of these phytoplankton groups to their sedimentary record reveals the sediment record as a reflection of the upwelling situation, preserving most of its...
Tipo: Text Palavras-chave: Upwelling; Portugal; Diatomée; Colonne d’eau; Sédiment; Upwelling; Portugal; Diatom; Water column; Sediment.
Ano: 1999 URL: http://archimer.ifremer.fr/doc/00325/43613/43915.pdf
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Extrator de água-de-coco verde. Infoteca-e
ABREU, F. A. P. de..
O extrator de água-de-coco verde é uma equipamento que foi projetado e concebido para suprir as necessidades de engarrafamento de água-de-coco verde, produto tropical que atualmente possui alto potencial de mercado em outros países e regiões não produtoras. É apresentado neste trabalho o estado da técnica, avanços obtidos com o uso do extrator mecânico, características do equipamento além de algumas recomendações técnicas.
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Água de coco - Extrator; Abertura de cocos.
Ano: 1999 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/425831
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Alta densidade na produçao de frangos de corte. Infoteca-e
ABREU, P. G. de; ABREU, V. M. N..
1999
Tipo: Séries anteriores (INFOTECA-E) Palavras-chave: Frango de corte; Instalação; Densidade; Broiler; Housing; Density.
Ano: 1999 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/439412
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