Les obstacles épistémologiques dans l'évolution de la pensée transformiste.Mignon, Jacques ; in Probio-Revue (2004), 3 Detailed reference viewed: 13 (2 ULg) Tournières, jachères et insectes auxiliaires; Haubruge, Eric ; et alArticle for general public (2003) Detailed reference viewed: 8 (2 ULg) Le complexe Chrysoperla carnea en Belgique (Neuroptera : Chrysopidae); Mignon, Jacques ; in Notes Fauniques de Gembloux (2003), 50 De 1997 à 2002, près de 4000 Chrysoperla carnea sensu lato furent collectées dans quinze localités de Belgique, principalement dans la ville de Gembloux (Province de Namur). Le fauchage de la végétation à ... [more ▼] De 1997 à 2002, près de 4000 Chrysoperla carnea sensu lato furent collectées dans quinze localités de Belgique, principalement dans la ville de Gembloux (Province de Namur). Le fauchage de la végétation à l’aide d’un filet représente le principal mode d’échantillonnage. Les individus capturés furent identifiés sur base des descriptions de Thierry et al. (1992), Duelli (1995, 1999 communication personnelle), ainsi que par comparaison, soit avec différents types morphologiques (de D. Thierry), soit à des individus identifiés sur base de leurs chants (par P. Duelli). Chrysoperla kolthoffi sensu Cloupeau (Ch.c.c.4. ou « motorboat » sensu Henry) constitue le taxon le plus représenté dans les différentes localités. Chrysoperla carnea sensu Cloupeau (« low motorboat » sensu Henry) est également souvent rencontrée abondamment, principalement en automne. Seule Chrysoperla lucasina Lacroix est observée plus rarement chaque année et dans chaque lieu. La fréquence saisonnière de Ch. carnea s.C. est variable. Ainsi, elle est relativement faible en été et elle augmente progressivement au cours de l’automne. A cette période, les proportions de Ch. kolthoffi diminuent tandis que le taux de Ch. lucasina reste stable. [less ▲] Detailed reference viewed: 11 (0 ULg) Insectes et communication; ; et al in Journal des Ingénieurs (Le) (2003), 87 Detailed reference viewed: 32 (4 ULg) Evaluation de la présence des Syrphidae en cultures maraîchères et relation avec les populations aphidiennes.Francis, Frédéric ; ; et alin Abstract book (2003) Detailed reference viewed: 8 (0 ULg) Insecticide activity of surfactins and iturins from a biopesticide Bacillus subtilis Cohn (S499 strain); Deleu, Magali ; et alin Mededelingen van de Faculteit Landbouwkundige en Toegepaste Biologische Wetenschappen (Rijksuniversiteit te Gent) (2002), 67(3), 647-655 Surfactin C14, surfactin C15, and iturin C15 are lipopeptides purified from Bacillus subtilis (S499 strain). They were incorporated into the artificial diet of the fruit fly Drosophila melanogaster to ... [more ▼] Surfactin C14, surfactin C15, and iturin C15 are lipopeptides purified from Bacillus subtilis (S499 strain). They were incorporated into the artificial diet of the fruit fly Drosophila melanogaster to assess their potential insecticidal activities. Surfactins with long fatty acid chains (C14 and C15) had an insecticidal effect on the fruit fly, D. melanogaster. On the contrary, iturin was not toxic to D. melanogaster. At 100 ppm, surfactin C14 and C15 caused 85.4 and 92.6% adult mortality, respectively, after a one-day exposure. F1 progeny fly emergence inhibition by C14 and C15 were 79.8 and 91.3%, respectively. To check whether the biocide activity of lipopeptides was due to their surface-active properties, detergent Triton X100, SDS, CTAB, and Tween 80 were tested. No adult mortality was recorded with the detergents but Triton X100 and SDS showed F1 progeny emergence inhibition similar to that of surfactins. We showed that there was a dose-response activity with surfactin C15 [less ▲] Detailed reference viewed: 109 (6 ULg) The green lacewings in Belgium (Neuroptera : Chrysopidae); Mignon, Jacques ; in Acta Zoologica Academiae Scientiarum Hungaricae (2002), 48(Suppl. 2), 53-59 There are merely three published sources of information on the green lacewings in Belgium. The first two were written by a Belgian and a Catalan author at the beginning of the 20th century and the third ... [more ▼] There are merely three published sources of information on the green lacewings in Belgium. The first two were written by a Belgian and a Catalan author at the beginning of the 20th century and the third was published in 1980. Interestingly, the most recent study reported the fewest species (11), the most previous contained 12 and the second one showed 17 species, This confused situation and the paucity of data initiated the authors to identify the green lacewing collection of the Gembloux University of Agricultural Sciences, where lacewings from different parts of Belgium were preserved, and also to collect chrysopids regularly, Summarising the species reported in the literature and caught during sampling, 18 green lacewing species have been verified in Belgium: Nothochrysa fulviceps, Nothochrysa capitata, Hypochrysa elegans, Nineta flava, Nineta vittata, Nineta pallida, Chrysotropia ciliata, Chrysopa perla, Chrysopa dorsalis, Chrysopa abbreviata, Chrysopa formosa, Chrysopa phlyllochroma, Chrysopa pallens, Dichochrysa flavifrons, Dichochrysa prasina, Dichochrysa ventralis, Chrysoperla carnea, Cunctochrysa albolineata. Considering the known references, one species, Nineta pallida proved to be new for the Belgian fauna. [less ▲] Detailed reference viewed: 63 (2 ULg) The impact of grain quantity on the biology of Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae): oviposition, distribution of eggs, adult emergence, body weight and sex ratio; ; Haubruge, Eric ![]() in Journal of Stored Products Research (2002), 38 Detailed reference viewed: 7 (1 ULg) Responses and adaptations of Episyrphus balteatus and Adalia bipunctata to allelochemicals from Brassicaceae plant through their preys; Haubruge, Eric ; et alin 8th International Symposium on Ecology of Aphidophaga, Azores 2002. Proceeding abstract 68 (2002) Detailed reference viewed: 8 (3 ULg) Aphid prey suitability as environmental effect on Adalia bipunctata reproduction; ; Francis, Frédéric ![]() in Med. Fac. Landbouw. Univ. Gent (2002), 67(3), 563-568 Detailed reference viewed: 6 (2 ULg) Effect of some insecticides on acetylcholinesterase from beneficial insects: Coccinella septempunctata, Chrysoperla carnea and Forficula auricularia; Francis, Frédéric ; et alin Med. Fac. Landbouw. Univ. Gent (2002), 67(3), 671-677 Detailed reference viewed: 7 (1 ULg) Impact of closed habitat on the entomological diversity and abundance in carrot open fields; ; Haubruge, Eric et alin Med. Fac. Landbouw. Univ. Gent (2002), 67(3), 481-486 Detailed reference viewed: 8 (0 ULg) Mesures agri-environnementales et biodiversité : effet des tournières enherbées sur les populations de syrphes en grandes culturesFrancis, Frédéric ; ; et alin 1. Annales de la 2ème Conférence Internationale sur les moyens alternatifs de lutte contre les organismes nuisibles aux végétaux (2002) Detailed reference viewed: 24 (2 ULg) Entomological diversity in agro-ecosystems : not necessarily an ecological desertFrancis, Frédéric ; Haubruge, Eric ; et alin Bulletin de l’Institut Royal des Sciences naturelles de Belgique, Biologie, 72 : 153-154. (2002) Detailed reference viewed: 12 (0 ULg) Effets de l’environnement proche sur la biodiversité entomologique en carottes de plein champ; ; et al in Annales de la 2ème Conférence Internationale sur les moyens alternatifs de lutte contre les organismes nuisibles aux végétaux (2002) Detailed reference viewed: 15 (1 ULg) The prevalence of mycotoxins in Kashin-Beck diseaseHaubruge, Eric ; ; et alin International Orthopaedics (2001), 25 Detailed reference viewed: 11 (6 ULg) Responses and adaptations of Episyrphus balteatus to allelochemicals from plant through their preysFrancis, Frédéric ; ; Haubruge, Eric et alin Abstract book (2001) Detailed reference viewed: 8 (0 ULg) Oviposition preferences of Episyrphus balteatus; Haubruge, Eric ; et alin Med. Fac. Landbouw. Univ. Gent (2001), 66(2a), 269-275 Detailed reference viewed: 7 (0 ULg) Evaluation of aphidophagous ladybird populations in a vegetable crop and implications as biological agentsFrancis, Frédéric ; ; Haubruge, Eric et alin Med. Fac. Landbouw. Univ. Gent (2001), 66(2a), 333-340 Detailed reference viewed: 11 (2 ULg) Ecosystem disturbances: an opportunity for biodiversity persistence; Francis, Frédéric ; Haubruge, Eric et alin Abstract book (2001) Detailed reference viewed: 9 (3 ULg) |
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