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2015 ; 6
(2
): 514-23
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Predation of the Peach Aphid Myzus persicae by the mirid Predator Macrolophus
pygmaeus on Sweet Peppers: Effect of Prey and Predator Density
#MMPMID26463201
De Backer L
; Wäckers FL
; Francis F
; Verheggen FJ
Insects
2015[Jun]; 6
(2
): 514-23
PMID26463201
show ga
Integrated Pest Management strategies are widely implemented in sweet peppers.
Aphid biological control on sweet pepers includes curative applications of
parasitoids and generalist predators, but with limited efficiency. Macrolophus
pygmaeus is a zoophytophagous predator which has been reported to predate on
aphids, but has traditionally been used to control other pests, including
whiteflies. In this work, we evaluate the effectiveness of M. pygmaeus in
controlling Myzus persicae (Homoptera: Aphididae) by testing different
combinations of aphid and predator densities in cage-experiments under greenhouse
conditions. The impact of the presence of an alternative factitious prey (E.
kuehniella eggs) was also investigated. Macrolophus pygmaeus, at densities of
four individuals/plant, caused rapid decline of newly established aphid
populations. When aphid infestations were heavy, the mirid bug reduced the aphid
numbers but did not fully eradicate aphid populations. The availability of a
factitious prey did not influence M. pygmaeus predation on aphids. Based on our
data, preventive application of M. pygmaeus, along with a supplementary food
source , is recommended to control early infestations of aphids.