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See detailLes populations d'origine immigrée face au droit en Belgique
Martiniello, Marco ULg; Foblets, Marie-Claire

Book published by Academia Press (2004)

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See detailLes populations de grands mammifères et d'autruches du Parc National de Zakouma au Tchad : statuts et tendances évolutives
Dejace, Philippe; Gauthier, Laure; Bouché, Philippe ULg

in Revue d'Ecologie (2000), 55

Zakouma National Park is situated in the south-east of Chad Republic and covers more than 3 000 km2. Rehabilitated in 1989, it is certainly one of the best-preserved wildlife sanctuaries in Sahelian ... [more ▼]

Zakouma National Park is situated in the south-east of Chad Republic and covers more than 3 000 km2. Rehabilitated in 1989, it is certainly one of the best-preserved wildlife sanctuaries in Sahelian Africa. Aerial census shows that most of its original fauna is still present, making the Park an exception in the region despite the recent troubled history of this country. Total population estimates of elephants, buffaloes and topis are given and distribution maps are presented for eleven species. Results are compared with two previous estimates. Except for the ostrich and perhaps the warthog, probably in regression, the populations of two species are stable (hartebeest and giraffe) while the others are clearly increasing (buffalo, topi, elephant and roan antelope). Those encouraging results are the consequence of the remoteness of the park, wich is far from any big town, and also overflooded and isolated during the wet season. Those facts contribute to maintain the human pressure at a sustainable level. [less ▲]

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See detailLes populations de rats noirs insulaires de l'ouest de l'Europe. Essai préliminaire de caractérisation génétique (caryotype et ADN mitochondrial)
Libois, Roland ULg; Torrico, Jorge; Ramalhinho, Maria Graça et al

in Vie et Milieu (1996), 46(3-4), 213-218

The colonisation of Europe by the black rat (Rattus rattus) dates back only to the Roman times. This rodent is now widespread all over the continent as well as on many islands where it was introduced by ... [more ▼]

The colonisation of Europe by the black rat (Rattus rattus) dates back only to the Roman times. This rodent is now widespread all over the continent as well as on many islands where it was introduced by man. In some instances, insular populations are morphologically differentiated by their greater size. In order to study the possible origin of these insular populations, rats were caught on many Mediterranean (Sicily, Sardinia, Lavezzi, Corsica, Elba, Porquerolles) and Atlantic islands (Ré, Oléron, Azores) and compared to animals from continental Europe (Spain), and Africa (Tunisia, Benin). Their karyotype was determined and their mtDNA restriction patterns studied using the HAE III and RSA I endonucleases and a polyacrylamide gel electrophoresis. These patterns appear very similar to each other though one of them is specific to the African animals, probably indicating that Europe and Africa were colonised by different strains. [less ▲]

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See detailLes populations insulaires face au changement climatique : des migrations à anticiper
Cournil, Christel; Gemenne, François ULg

in VertigO : la Revue Electronique en Sciences de l'Environnement (2010), 10(3),

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See detailPopulations of aphid natural enemies in agroecosystems, with special emphasis on the Multicoloured Asian Ladybird Harmonia axyridis Pallas (Coleoptera: Coccinellidae)
Vandereycken, Axel ULg

Doctoral thesis (2014)

The international trade of goods and food can lead to the introduction of alien species in the importing countries. Even if in the most cases there is no negative impact induced by alien species, in some ... [more ▼]

The international trade of goods and food can lead to the introduction of alien species in the importing countries. Even if in the most cases there is no negative impact induced by alien species, in some cases the new imported species can spread out of control. These species can cause economical and ecological damages. The Multicoloured Asian ladybird Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae) is one of these species which was intentionally introduced for biological control and has spread from its native range in Central and Eastern Asia to large parts of North and South America, Europe and Africa. The decline of native species is linked to the spread and the aggressive behaviour of H. axyridis. The objective of this thesis is the evaluation of aphid's predator population densities and predator diversities, with a special focus on H. axyridis in agroecosystems in Wallonia, in the South of Belgium. First, field crops preferences of H. axyridis were determined. Later aphid's predator population changes during time were evaluated. Finally H. axyridis population changes between two crop farming were evaluated. Our main findings were as follows. Results, based on insects collected since 2001, highlighted that the first collected H. axyridis was in 2002 and the population of H. axyridis is increasing until 2008. In the same time population of Adalia bipunctata, Propylea quatuordecimpunctata and Psyllobora vigintiduopunctata, three native species, are decreasing. Samplings in agroecosystems highlighted that aphid's predator community is composed of few dominant species: three coccinellids Coccinella septempunctata, P. quatuordecimpunctata and H. axyridis, one syrphid Episyrphus balteatus and one chrysopid Chrysoperla carnea. We have shown that H. axyridis do not invade all Wallonia crops at the same rate because corn and broad bean are more invaded that wheat and potato at both larval and adult stages. Moreover in corn, H. axyridis populations has strongly increased from 2009 to 2011. Finally, organic farming do not enhance abundance of H. axyridis but lead to increase the total abundance of aphid natural enemies. [less ▲]

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See detailLes populations riveraines du Ranch de Nazinga : anthropologie politique, aménagement des terroirs et zones villageoises de chasse
Vermeulen, Cédric ULg; Michaux, J. F.

in Delvingt, W.; Vermeulen, Cédric (Eds.) Nazinga (2007)

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See detailLes populations riveraines du Ranch de Nazinga : anthropologie politique, aménagement des terroirs et zones villageoises de chasse
Vermeulen, Cédric ULg; Michaux, J.-F.

in Vermeulen, Cédric; Delvingt, W. (Eds.) Nazinga (2007)

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See detailLes populations rurales : évolutions et perceptions en Wallonie
Mougenot, Catherine ULg

in Espace, Populations, Sociétés (1986), III

Les connaissances sur les populations rurales sont elles-mêmes produites par les représentations qu’on se fait de ce monde rural. Elles mobilisent des catégories de description et d’analyse qui sont ... [more ▼]

Les connaissances sur les populations rurales sont elles-mêmes produites par les représentations qu’on se fait de ce monde rural. Elles mobilisent des catégories de description et d’analyse qui sont influencées par le contexte du moment. Autrement dit, elles sont le reflet de préoccupations sociales qui définissent les questions prioritaires ou pertinentes à leur sujet. L’analyse porte plus spécifiquement sur la situation de l’après-guerre en Région wallonne (Belgique). [less ▲]

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See detailPopulations vulnérables en temps de conflit armé
Pierre, Alexia ULg

in Guedah, Mohamed (Ed.) Délinquance et changements sociaux – dialogue nord/sud (2009)

De nombreux textes conventionnels et internationaux prévoient des dispositions de protection des populations non combattantes en temps de conflit armé. Parmi ces populations civiles, certains groupes sont ... [more ▼]

De nombreux textes conventionnels et internationaux prévoient des dispositions de protection des populations non combattantes en temps de conflit armé. Parmi ces populations civiles, certains groupes sont considérés comme plus vulnérables, dont les femmes et les enfants, pour lesquels des protections spéciales sont prévues. Malgré ces dispositions particulières, ces populations continuent de subir des exactions en temps de guerre, par exemple le viol systématique et massif, ou l'utilisation d'enfants dans les combats. [less ▲]

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See detailPopulism and producerism in Europe and United States
Jamin, Jérôme ULg

Conference (2003)

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See detailPopulisme en Europe
Jamin, Jérôme ULg

Conference given outside the academic context (2008)

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See detailPopulisme et stigmatisation d’une lutte ouvrière : l’affaire "Clabecq"
Geuens, Geoffrey ULg

in Hermès (2005), 42 ("Peuple, populaire, populisme")

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See detailPopulisme, dépolitisation, délégitimation
Delruelle, Edouard ULg

Conference given outside the academic context (2010)

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See detailPorc et reduction des rejets azotes.
Leterme, Pascal; Thewis, André ULg

in Agricontact (1994), (259), 3-4

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See detailLe porc sur parcours : le retour aux origines.
Bindelle, Jérôme ULg

Article for general public (2003)

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See detailLes porcheries : réservoirs des Culicoides (Diptera: Ceratopogonidae), vecteurs des virus de la Maladie de la Langue bleue et de Schmallenberg ?
Zimmer, Jean-Yves ULg; Saegerman, Claude ULg; Martinelle, Ludovic ULg et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2014), 18(4), 480-487

La fièvre catarrhale ovine (FCO) est une arbovirose qui affecte les ruminants domestiques et sauvages. Depuis sa récente apparition en Europe du Nord, cette épizootie virale a engendré des pertes ... [more ▼]

La fièvre catarrhale ovine (FCO) est une arbovirose qui affecte les ruminants domestiques et sauvages. Depuis sa récente apparition en Europe du Nord, cette épizootie virale a engendré des pertes économiques considérables. Les vecteurs biologiques du virus de la FCO sont des moucherons piqueurs appartenant au genre Culicoides (Diptera : Ceratopogonidae). Plusieurs campagnes de piégeage lumineux de ces moucherons adultes ont été réalisées précédemment en Belgique au sein d’exploitations bovines et ovines, mais aucune à l’intérieur des exploitations porcines. Cette étude vise donc à évaluer, au moyen de pièges lumineux, les populations de culicoïdes éventuellement présentes à l’intérieur de deux porcheries belges au cours de l’automne et de l’hiver 2008. La présence des espèces (potentiellement) vectrices du genre Culicoides a ainsi été mise en évidence à l’intérieur de ces bâtiments durant l’automne : 8 et 749 spécimens appartenant à 2 et 7 espèces ont ainsi respectivement été piégés au sein des porcheries, avec une majorité de femelles du complexe Obsoletus. L’ouverture des bâtiments semble fortement influencer leur présence. L’observation du statut alimentaire des femelles laisse supposer que ces moucherons sont susceptibles de se nourrir ou de pondre au sein des porcheries, même si le sang de porc n’a pas pu être identifié dans l’abdomen des femelles gorgées et que le lisier n’a pas révélé la présence de larves. Les porcs pourraient ainsi intervenir dans le maintien des populations d’espèces potentiellement vectrices du virus de la FCO, ou du nouveau virus dénommé virus Schmallenberg. [less ▲]

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See detailPorcine anatomy as a training model in vascular in interventionnal radiology
Ghysels; Brisbois; Donkers et al

Poster (1996)

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See detailPorcine CD18 mediates Actinobacillus pleuropneumoniae ApxIII species-specific toxicity
Vanden bergh, Philippe; Zecchinon, Laurent; Fett, Thomas ULg et al

in Veterinary Research (2009), 40(4), 33

Actinobacillus pleuropneumoniae, the causative agent of porcine pleuropneumonia, produces Apx toxins that are recognized as major virulence factors. Recently, we showed that ApxIIIA-cytotoxic activity ... [more ▼]

Actinobacillus pleuropneumoniae, the causative agent of porcine pleuropneumonia, produces Apx toxins that are recognized as major virulence factors. Recently, we showed that ApxIIIA-cytotoxic activity specifically targets Sus scrofa leukocytes. Since both LtxA from Aggregatibacter actinomycetem comitans (aggressive periodontitis in humans) and LktA from Mannheimia haemolytica (pneumonia in ruminants) share this characteristic, respectively towards human and ruminant leukocytes, and because both use the CD18 subunit to interact with their respective LFA-1, we hypothesized that ApxIIIA was likely to bind porcine CD18 to exercise its deleterious effects on pig leukocytes. A beta(2)-integrin-deficient ApxIIIA-resistant human erythroleukemic cell line was transfected either with homologous or heterologous CD11a/ CD18 heterodimers using a set of plasmids coding for human (ApxIIIA-resistant), bovine (-resistant) and porcine (-susceptible) CD11a and CD18 subunits. Cell preparations that switched from ApxIIIA-resistance to -susceptibility were then sought to identify the LFA-1 subunit involved. The results showed that the ApxIIIA-resistant recipient cell line was rendered susceptible only if the CD18 partner within the LFA-1 heterodimer was that of the pig. It is concluded that porcine CD18 is necessary to mediate A. pleuropneumoniae ApxIIIA toxin-induced leukolysis. [less ▲]

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