References of "2006"
     in
Bookmark and Share    
Full Text
See detailElectroantennogram of Culex quinquefasciatus Say (Diptera:Culicidae) to chemical compounds from fermented infusions and improvement of gravid mosquito trapping
Latte, Nicolas ULg

Master's dissertation (2006)

The urban mosquito Culex quinquefasciatus Say (Diptera: Culicidae) uses chemicals to locate suitable water pools for oviposition. These chemicals when identified can be used to trap gravid female ... [more ▼]

The urban mosquito Culex quinquefasciatus Say (Diptera: Culicidae) uses chemicals to locate suitable water pools for oviposition. These chemicals when identified can be used to trap gravid female mosquitoes. Experiments in Davis and in Sacramento (California, in the United States) were made to improve the trapping efficiency of Reiter/Cumming gravid traps baited by several attractants (or attractant blends). Unfortunately, it appeared that the number of gravid female mosquitoes collected was not sufficient to differentiate the efficacy of attractant blends tested by statistical analysis. However, a positive correlation between the total mosquito number collected daily and the highest humidity shows that the mosquito oviposition activity seems to be influenced by the humidity during the night. Observations on total number of mosquitoes and the highest temperature seem to reveal a threshold temperature which is critical for the adult mosquito survival. A coupled gas chromatography – electronantennography (GC-EAD) protocol was also developed step by step in order to find new Culex quinquefasciatus oviposition attractants. After obtaining repetitive electroantennographic (EA) response, two comparison experiments (SPME fiber type and infusion type) were made to finalize the specific GC-EAD/SPME protocol. This with the aim to prospect new attractants from fermented Bermuda grass infusion. Analyses based on all results permit to distinguish the EA responses from random perturbations (electromagnetic and vibration). GC-EAD/SPME of Bermuda grass infusion analyses confirms the presence of 10 and the activity of 9 chemical compounds as established by Du and Millar in 1999. Furthermore, experiments on Culex quinquefasciatus performed with the new protocol, brought to light the EA activity of 10 other unknown chemicals, 7 of which are low molecular weight chemical compounds. These new chemicals have now to be identified and their ability to elicit EA responses still has to be confirmed. [less ▲]

Detailed reference viewed: 39 (10 ULg)
Full Text
Peer Reviewed
See detailEtude de la diversité des pucerons et des auxiliaires adiphages relative à la présence d'orties en bordures de champ
Alhmedi, A.; Francis, Frédéric ULg; Bodson, Bernard ULg et al

in Notes Fauniques de Gembloux (2006), 59(2), 121-124

Detailed reference viewed: 33 (6 ULg)
Full Text
Peer Reviewed
See detailTemporal shift of diet in alternative cannibalistic morphs of the tiger salamander
Denoël, Mathieu ULg; Whiteman, Howard H.; Wissinger, Scott A.

in Biological Journal of the Linnean Society (2006), 89(2), 373-382

Evolutionary theory predicts that alternative trophic morphologies are adaptive because they allow a broad use of resources in heterogeneous environments. The development of a cannibal morphology is ... [more ▼]

Evolutionary theory predicts that alternative trophic morphologies are adaptive because they allow a broad use of resources in heterogeneous environments. The development of a cannibal morphology is expected to result in cannibalism and high individual fitness, but conflicting results show that the situation is more complex. The goal of the present study was to increase our understanding of the ultimate benefits of a cannibalistic polyphenism by determining temporal changes in the feeding habits and biomass intake in a population of tiger salamanders (Ambystoma tigrinum nebulosum). Cannibals in this species develop a larger head than typicals and have prominent teeth, both useful for consuming large prey. Although cannibalism was only detected in cannibal morphs, large temporal variation in resource partitioning was found between morphs. The two morphs always differed in their foraging habits, but cannibalism mainly occurred immediately after the ontogenetic divergence between morphs. Cannibals shifted their foraging later to a more planktivorous diet (i.e. the primarily prey of the typical morph). Cannibals also obtained more prey biomass than typicals. These results indicate that the cannibalistic morph is advantageous over the typical development, but that these advantages vary ontogenetically. Although the results obtained are consistent with models predicting the maintenance of cannibalism polyphenism in natural populations, they show that the foraging tactics utilized by cannibal morphs, and the fitness consequences accrued by such tactics, are likely to be more complex and dynamic than previous studies have suggested. (c) 2006 The Linnean Society of London. [less ▲]

Detailed reference viewed: 110 (8 ULg)
See detailEtat de la question sur l'hyperactivité et les troubles attentionnels
Catale, Corinne ULg

Conference given outside the academic context (2006)

Detailed reference viewed: 5 (5 ULg)
Full Text
See detailD'Anatole France à Jean Paulhan : Terreur et Littérature
Denis, Benoît ULg

in Etudes Sartriennes (2006), (11), 81-97

Detailed reference viewed: 18 (1 ULg)
See detailLes dynamiques de localisation des services aux entreprises
Merenne-Schoumaker, Bernadette ULg; Moyaert, Laurence

in Gallouj, Camal; Leloup, Fabienne; Merenne-Schoumaker, Bernadette (Eds.) et al Services aux entreprises et développement régional (2006)

Les services aux entreprises contribuent à la structuration de l’espace du fait de leur inégale répartition. Comprendre les principes qui gouvernent la localisation de ces activités, et a fortiori leur ... [more ▼]

Les services aux entreprises contribuent à la structuration de l’espace du fait de leur inégale répartition. Comprendre les principes qui gouvernent la localisation de ces activités, et a fortiori leur tendance à la concentration spatiale, constitue de ce fait un enjeu car de celle-ci dépend le développement régional. La localisation des services peut être analysée à différentes échelles, allant de l’international au local. Mais comme celle-ci a toujours été étroitement lié à celle des villes, on distingue généralement deux échelles essentielles : la localisation interurbaine (expliquant les choix de localisation des services entre les diverses villes) et la localisation intra-urbaine (rendant compte du choix d’un site particulier au sein même d’une agglomération ou zone urbaine). [less ▲]

Detailed reference viewed: 63 (2 ULg)
Full Text
Peer Reviewed
See detailTechno-logie. À propos du Château des Carpathes
Durand, Pascal ULg

in Gras, A.; Musso, P. (Eds.) Politique, communication et technologies (2006)

Detailed reference viewed: 33 (11 ULg)
See detailSome Issues for the Successful Implementation of an E-Government Project
Rondeaux, Giseline ULg

in Makkia, M.; Antiroikko, A. (Eds.) Encyclopedia of Digital Government (2006)

Detailed reference viewed: 22 (4 ULg)
Full Text
Peer Reviewed
See detailDetection of novel single-nucleotide polymorphisms (SNPs) in the CYP21 gene and association analysis of two SNPs for CYP21 and ESR2 with litter size in a commercial sow population
Buske, Bernd ULg; Sternstein, Ina; Reissmann, Monika et al

in Journal of Animal Breeding & Genetics (2006), 123(5), 343-348

Detailed reference viewed: 26 (11 ULg)
See detailIl destino della scrittura (postfazione)
Ricciardi, Stefania ULg; Veronesi, Sandro

in Occhio per occhio: La pena di morte in 4 storie [1992] (2006)

Detailed reference viewed: 10 (1 ULg)
Full Text
Peer Reviewed
See detailOptimization of a reliable, fast, cheap and sensitive silver staining method to detect SSR markers in polyacrylamide gels.
Benbouza, H.; Jacquemin, J. M.; Baudoin, Jean-Pierre ULg et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2006), 10(2), 77-81

Detailed reference viewed: 33 (4 ULg)
Full Text
Peer Reviewed
See detailEnergy conserving balance of explicit time steps to combine implicit and explicit algorithms in structural dynamics
Noels, Ludovic ULg; Stainier, Laurent ULg; Ponthot, Jean-Philippe ULg

in Computer Methods in Applied Mechanics & Engineering (2006), 195(19-22), 21692192

Recent developments have proved the advantage of combining both time implicit and time explicit integration algorithms in structural dynamics. A major problem is to define the initial conditions for the ... [more ▼]

Recent developments have proved the advantage of combining both time implicit and time explicit integration algorithms in structural dynamics. A major problem is to define the initial conditions for the implicit simulation on the basis of a solution obtained from an unbalanced explicit resolution. The unbalanced nature of the explicit algorithm leads to oscillations in the fields of interest. Therefore, the values obtained after an explicit computation cannot be used directly as initial conditions for an implicit simulation. In this paper, we develop such initial values that lead to a stable (no numerical creation of energy) and energy-conserving transition. (c) 2005 Elsevier B.V. All rights reserved. [less ▲]

Detailed reference viewed: 34 (8 ULg)
Full Text
See detailValuer van der munte - Muntplacaat
Adam, Renaud ULg; Boffa, Sergio

in Bousmanne, Bernard; Thieffry, Sandrine; Wijsman, Hanno (Eds.) Filips de Schone (1478-1506) : schatten van de laatste hertog van Bourgondië : [tentoonstelling : Brussel, Koninklijke Bibliotheek van België, Nassaukapel, van 3 november 2006 tot 27 januari 2007] : catalogus (2006)

Detailed reference viewed: 15 (0 ULg)
See detailLe tranchant des modernes (suite)
Delville, Michel ULg

in Belloi, Livio; Delville, Michel (Eds.) L'oeuvre en morceaux (2006)

Detailed reference viewed: 3 (0 ULg)
Full Text
Peer Reviewed
See detailThe Castelnau's fish collection and watercolour notebooks
Loneux, Michèle ULg

in Segers, Hendrik; Desmet, P.; Baus, Erika (Eds.) Proceedings of the 3rd GBIF Science Symposium - Tropical Biodiversity: Science, Data, Conservation (2006)

In 1865, Jean-Theodore Lacordaire (professor of natural sciences at the University of Liège) purchased more than thousand specimens collected by the famous explorer ‘Comte de Castelnau’. Castelnau (London ... [more ▼]

In 1865, Jean-Theodore Lacordaire (professor of natural sciences at the University of Liège) purchased more than thousand specimens collected by the famous explorer ‘Comte de Castelnau’. Castelnau (London 1812 – Melbourne 1880) travelled around the world being both explorer and diplomat. His most famous trip was the crossing of South America from Mato Gross to Peru, coming back by the Amazon. He discovered and described several species. The specimens collected by Castelnau present at the Museum of Zoology include mainly birds and fishes. One of the fish specimens is labelled as Chrysophrys nasutus type and is probably the (holo)type specimen for Cymatoceps nasutus. The fish specimens were accompanied by five original watercolour notebooks, showing coloured fish-drawings made by the collector at the catch moment. Despite the fact that some of the paintings were used in the past to restore the colours of the naturalised fishes, further research on the relations between the collection and the notebooks should be made. [less ▲]

Detailed reference viewed: 16 (0 ULg)