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See detailInsectes et communication
Arnaud, Ludovic; Detrain, Claire; Gaspar, Charles et al

in Journal des Ingénieurs (Le) (2003), 87

Detailed reference viewed: 97 (5 ULiège)
See detailInsectes et communication chimique - Sémiochimiques et olfaction
Verheggen, François ULiege

Conference (2011, March 15)

Les insectes communiquent avec leurs semblables et avec leur environnement par le biais de molécules organiques informatives nommées sémiochimiques. L'écologie chimique est la branche de l'écologie qui s ... [more ▼]

Les insectes communiquent avec leurs semblables et avec leur environnement par le biais de molécules organiques informatives nommées sémiochimiques. L'écologie chimique est la branche de l'écologie qui s'intéresse au décriptage de ce mode de communication, dont le maitre d'œuvre est le système olfactif des insectes, où antennes et sensilles supportent toute la machinerie physiologique nécessaire à la perception des phéromones et coactones. Pour comprendre le language chimique employé par un insecte, de nombreux outils ont été développés, permettant (1) l'échantillonnage des molécules organiques produites par un insecte, (2) la séparation, la quantification et l'identification des différents constituants du mélange phéromonal,(3) l'étude de la perception par le système olfactif de l'insecte et (4) l'étude du comportement d'un individu mis en présence d'un potentiel bouquet phéromonal ou de l'un de ses constituants. De nombreuses phéromones et coactones ont déjà trouvé le chemin de la valorisation dans le domaine de la protection des cultures. Bien que les insectes d'intérêt agronomique soient les plus largement étudiés, les sémiochimiques employés par d'autres groupes d'insectes font l'objet de nouvelles recherches, avec notamment l'émergence de l'entomologie criminelle [less ▲]

Detailed reference viewed: 102 (11 ULiège)
See detailInsectes et communication chimique - Techniques et méthodes en écologie chimique
Verheggen, François ULiege

Conference (2011, March 17)

Les insectes communiquent avec leurs semblables et avec leur environnement par le biais de molécules organiques informatives nommées sémiochimiques. L'écologie chimique est la branche de l'écologie qui s ... [more ▼]

Les insectes communiquent avec leurs semblables et avec leur environnement par le biais de molécules organiques informatives nommées sémiochimiques. L'écologie chimique est la branche de l'écologie qui s'intéresse au décriptage de ce mode de communication, dont le maitre d'œuvre est le système olfactif des insectes, où antennes et sensilles supportent toute la machinerie physiologique nécessaire à la perception des phéromones et coactones. Pour comprendre le language chimique employé par un insecte, de nombreux outils ont été développés, permettant (1) l'échantillonnage des molécules organiques produites par un insecte, (2) la séparation, la quantification et l'identification des différents constituants du mélange phéromonal,(3) l'étude de la perception par le système olfactif de l'insecte et (4) l'étude du comportement d'un individu mis en présence d'un potentiel bouquet phéromonal ou de l'un de ses constituants. De nombreuses phéromones et coactones ont déjà trouvé le chemin de la valorisation dans le domaine de la protection des cultures. Bien que les insectes d'intérêt agronomique soient les plus largement étudiés, les sémiochimiques employés par d'autres groupes d'insectes font l'objet de nouvelles recherches, avec notamment l'émergence de l'entomologie criminelle [less ▲]

Detailed reference viewed: 72 (15 ULiège)
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See detailInsectes ravageurs: Protection des grains stockés
Mignon, Jacques ULiege; Haubruge, Eric ULiege; Gaspar, Charles

in Agricontact (1996), 287

Detailed reference viewed: 73 (6 ULiège)
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See detailLes insectes, des aliments?
Blecker, Christophe ULiege

Conference (2013, March 28)

Detailed reference viewed: 18 (2 ULiège)
See detailLes insectes, des aliments?
Blecker, Christophe ULiege

Conference (2014, May 02)

Detailed reference viewed: 23 (7 ULiège)
See detailLes insectes: Jardiniers du diable, templier de Lucifer
Verheggen, François ULiege

Conference given outside the academic context (2013)

Detailed reference viewed: 32 (2 ULiège)
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See detailInsecticidal activity of Boscia senegalensis (Pers.) Lam ex Poir. on Caryedon serratus (Ol.) pest of stored groundnuts
Gueye, Momar Talla; Seck, Dogo; Ba, Seynabou et al

in African Journal of Agricultural Research (2011), 6(30), 6348-6353

Detailed reference viewed: 67 (3 ULiège)
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See detailInsecticidal activity of Lavandula angustifolia Mill. against the pea aphid Acyrtosiphum pisum
Attia, Sabrine; Lognay, Georges ULiege; Heuskin, Stéphanie ULiege et al

in Journal of Entomology and Zoology Studies (2016), 4(1), 118-122

The essential oil of Lavandula angustifolia was investigated for its biocide activity against Acyrtosiphum pisum by fumigation. The oil was characterised by GC-MS revealing that linalool was the most ... [more ▼]

The essential oil of Lavandula angustifolia was investigated for its biocide activity against Acyrtosiphum pisum by fumigation. The oil was characterised by GC-MS revealing that linalool was the most abundant component (38.57%), followed by linalyl acetate (29.95%), 1,8-cineole (13,66%), camphor (13,13%), -pinene (3,14%) and terpinene-4-ol (1,54%). The Mortality was measured upon treatment with oil concentrations ranging from 5 to 25 µl.l-1 of air. The mortality of aphids increased with oil concentration and LC50 values were determined to be 11.2 µl.l-1 of air. The full mixture was also prepared and toxicity was compared with individual constituents. The results showed that the presence of all constituents were necessary to equal the toxicity of the natural oils L. angustifolia oil can provide valuable pesticide activity with significantly lower LC50 values [less ▲]

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See detailInsecticidal effect of Jatropha curcas L. seed oil on Callosobruchus maculatus Fab and Bruchidius atrolineatus Pic (Coleoptera: Bruchidae) on stored cowpea seeds (Vigna unguiculata L. Walp.) in Niger
Abdoul Habou, Zakari; Haougui, Adamou; Basso, Adamou et al

in African Journal of Agricultural Research (2014), 9(32), 2506-2510

Detailed reference viewed: 27 (4 ULiège)
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See detailInsecticidal effect of Jatropha curcas oil on the aphid Aphis fabae (Hemiptera: Aphididae) and on the main insect pests associated with cowpeas (Vigna unguiculata) in Niger
Abdoul Habou, Zakari; Haougui, A.; Mergeai, Guy ULiege et al

in Tropicultura (2011), 29(4), 225-229

The insecticidal activity of Jatropha curcas has been evaluated on various crop pests. Oil concentrations of 0.5, 1, 2.5, 5, 10 and 15% were first tested on the black bean aphid (Aphis fabae Scop.) as ... [more ▼]

The insecticidal activity of Jatropha curcas has been evaluated on various crop pests. Oil concentrations of 0.5, 1, 2.5, 5, 10 and 15% were first tested on the black bean aphid (Aphis fabae Scop.) as part of an efficacy test conducted in the laboratory. During a second stage, the insecticidal efficacy of 5 and 7.5% oil concentrations was evaluated on the main pests infesting cowpea crops (Vigna unguiculata L.) as part of a field test conducted at the University of Niamey (Niger). The results obtained in the two tests demonstrate the biocidal effect of the treatments applied, which increases with the concentration. On the black bean aphid, the biocidal effect increases during the hours following the application of oil before reaching a peak after 4 days. On cowpeas, J. curcas oil concentrations of 5% and 7.5% make it possible to reduce the level of attack by aphids (Aphis craccivora) by 10 and 50% respectively compared to the control. A 50% and 75% fall in the number of thrips (Megalurothrips sjöstedti) and bugs (Anoplocnemis curvipes), respectively, can be observed under the same conditions. This treatment made it possible to greatly increase yields compared to the untreated control. [less ▲]

Detailed reference viewed: 148 (7 ULiège)
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See detailInsecticide activity of surfactins and iturins from a biopesticide Bacillus subtilis Cohn (S499 strain)
Assié, Lazar; Deleu, Magali ULiege; Arnaud, Ludovic et al

in 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: 152 (7 ULiège)
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See detailInsecticide resistance enhances male reproductive success in a beetle
Arnaud, Ludovic; Haubruge, Eric ULiege

in Evolution (2002), 56(12), 2435-2444

Detailed reference viewed: 29 (0 ULiège)
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See detailInsecticide resistance gene transmission by insecticide-susceptible insects
Arnaud, Ludovic; Callaghan, Amanda; Haubruge, Eric ULiege

in Functional Ecology (2001)

Detailed reference viewed: 17 (1 ULiège)
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See detailInsects Associated With Jatropha curcas Linn. (Euphorbiaceae) in West Niger
Zakari, Abdoul Habou; Toudou, Adam; Haubruge, Eric ULiege et al

in Journal of Insect Science [=JIS] (2014)

Jatropha curcas has been introduced into Niger since 2004 by International Crops Research Institute for the Semi-Arid Tropics (ICRISAT). This plant is cultivated for its oil, which can be used as a ... [more ▼]

Jatropha curcas has been introduced into Niger since 2004 by International Crops Research Institute for the Semi-Arid Tropics (ICRISAT). This plant is cultivated for its oil, which can be used as a Biofuel. Through direct and indirect insect collection methods, an inventory of the insect associated with J. curcas has been conducted in Western Niger during two rainy seasons (from June to October) in 2010 and 2011. We have identified insects belonging to the following families: Acrididae (Oedaleus senegalensis Krauss, 15 Oedaleus nigeriensis Uvarov, Heteracris leani Uvarov, Catantops stramineus Walker, Parga cyanoptera Uvarov, and Acanthacris ruficornis citrina Audinet-Serville), Pyrgomorphidae (Poekilocerus bufonius hieroglyphicus Klug), Cetoniidae (Pachnoda interrupta Olivier, Pachnoda marginata aurantia Herbst, Pachnoda sinuata Heinrich and McClain, and Rhabdotis sobrina Gory and Percheron), Meloidae (Decapotoma lunata Pallas), Pentatomidae (Agonoscelis versicoloratus Dallas, Nezara viridula Linn, and Antestia sp. Kirkaldy), Coreidae (Leptoglossus membranaceus Fabricius and Cletus trigonus Thunberg), and Scutelleridae (Calidea panaethiopica Kirkaldy). Origin and 20 potential impact on J. curcas of all these insect species are presented and discussed. The lower insect’s diversity indexes are observed in 2010 and 2011 for Niamey, Saga, and Gaya because of semi-arid character of the Sahelian area. [less ▲]

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See detailInsects complex associated with the tropical basil, Ocimum gratissimum L. (Lamiaceae) in southern Benin.
Yarou, Boni Barthélémy ULiege; Bokonon-Ganta, H. Aimé; Assogba Komlan, Françoise et al

Poster (2016, December 16)

Tropical basil is an aromatic leafy vegetable used for its medicinal and therapeutic properties in numerous countries in West Africa (Benin, Nigeria, Togo, etc.). In Benin, it is produced on almost all ... [more ▼]

Tropical basil is an aromatic leafy vegetable used for its medicinal and therapeutic properties in numerous countries in West Africa (Benin, Nigeria, Togo, etc.). In Benin, it is produced on almost all urban and periurban garden throughout the year for fresh market. Until now there are few or nearly no publications about the arthropod community of this specie, even less in the context of Benin. Thus, to assess this community, basil plots were mowed using a sweep net in three localities (Ouidah, Togba and Sèmè) of southern Benin. Preliminary results focus on the different insect families that colonized tropical basil in southern Benin environmental conditions. These include: Aphididae (Homoptera), Cercopidae (Homoptera), Chrysomelidae (Coleoptera), Coccinelledidea (Coleoptera), Meloidae (Coleoptera), Braconidae (Hymenoptera), Ichneumonidae (Hymenoptera), Formicidae (Hymenoptera), Vespidae (Hymenoptera), Apoidae (Hymenoptera), Reduviidae (Heteroptera), Pentatomidae (Heteroptera), Pyrgomorphidae (Orthoptera), Acrididae (Orthoptera), Syrphidae (Diptera), Diopsidae (Diptera). Among these families, there are pests: Aphis gossypii G. (Homoptera: Aphididae), Zonocerus variegatus L. (Orthoptera: Pyrgomorphidae), etc.; predators: Ischiodon aegyptius W. (Diptera: Syrphidae), Cheilomenes spp. (Coleoptera: Coccinelledidea), Rhynocoris spp. (Heteroptera: Reduviidae), etc.; parasitoids and pollinators. From this study, it appeared that there is a large diversity of families and functional groups (pests, predators, parasitoids and pollinators) associated with tropical basil . Moreover, the presence of natural enemies could be an advantage for farmers in intercropping systems. This would help reduce the use of synthetic insecticides. This result, which is a first knowledge of the insect fauna associated with tropical basil under the environmental conditions of Southern Benin, will be supplemented by a spatio temporal study to assess the variability and the dynamics of this insect fauna. [less ▲]

Detailed reference viewed: 38 (4 ULiège)
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See detailInsects, the next European foodie craze?
Caparros Megido, Rudy ULiege; Haubruge, Eric ULiege; Francis, Frédéric ULiege

in Edible Insects in Sustainable Food Systems (in press)

Edible insects are systematically targeted as a major future food for European consumers but success in introducing entomophagy in Western society depends on factors governing consumers’ attitudes towards ... [more ▼]

Edible insects are systematically targeted as a major future food for European consumers but success in introducing entomophagy in Western society depends on factors governing consumers’ attitudes towards insect-based products. Effectively, as for sushi in the 2000s, edible insects are considered as new food products in Europe and are deeply related to a fear or a reject feeling by consumers called “food neophobia“. Consequently, several studies have been achieved to face the actual aversion of European consumers for insects. These studies principally tried to understand the insect-related neophobia, to highlight positive arguments for entomophagy development and also to test possible ways of integration of insects as food. The purpose of this chapter is to get an overview of the actual literature on edible insect acceptability in Europe to propose conceivable solutions for product development and new approaches for further studies. [less ▲]

Detailed reference viewed: 71 (5 ULiège)