Article (Scientific journals)
Effects of wildflower strips and an adjacent forest on aphids and their natural enemies in a pea field
Hatt, Séverin; Mouchon, Pierre; Chevalier Mendes Lopes, Thomas et al.
2017In Insects, 8 (3), p. 99
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Keywords :
conservation biological control; Syrphidae; Coccinellidae; parasitism; Pisum sativum L.
Abstract :
[en] Landscape diversification is a key element for the development of sustainable agriculture. This study explores whether the implementation of habitats for pest natural enemies enhances conservation biological control in an adjacent field. In the present study conducted in Gembloux (Belgium) in 2016, the effect of two different habitats (wildflower strips and a forest) and aphid abundance on the density of aphid natural enemies, mummified aphids and parasitism on pea plants was assessed through visual observations. The effect of the habitats on aphids was also evaluated. The habitats but not aphid density significantly affected hoverfly larvae, which were more abundant adjacent to wildflower strips than to the forest. The contrary was observed for ladybeetle adults, which were positively related with aphids but not affected by the adjacent habitats. The abundance of mummies and the parasitism rate were significantly affected by both the habitats and aphid density. They were both significantly enhanced adjacent to wildflower strips compared to the forest, but the total parasitism rate was low (<1%), questioning whether parasitoids could significantly control aphids on the pea crop. As for the aphids, their abundance was not significantly affected by the adjacent habitats. These results are discussed with respect to the potential of these habitats to provide overwintering sites and food resources for natural enemies, and thereby enhance conservation biological control.
Research center :
TERRA Teaching and Research Centre - TERRA
Disciplines :
Entomology & pest control
Agriculture & agronomy
Author, co-author :
Hatt, Séverin ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Gestion durable des bio-agresseurs
Mouchon, Pierre;  Institut Supérieur d’Agriculture de Lille
Chevalier Mendes Lopes, Thomas ;  Université de Liège - ULiège > Doct. sc. agro. & ingé. biol.
Francis, Frédéric  ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Gestion durable des bio-agresseurs
Language :
English
Title :
Effects of wildflower strips and an adjacent forest on aphids and their natural enemies in a pea field
Publication date :
13 September 2017
Journal title :
Insects
eISSN :
2075-4450
Publisher :
Molecular Diversity Preservation International (MDPI), Basel, Switzerland
Volume :
8
Issue :
3
Pages :
99
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
CARE AgricultureIsLife - Université de Liège, Gembloux Agro-Bio Tech
Available on ORBi :
since 14 October 2017

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