Archives of Phytopathology and Plant Protection (2019) 52, 1112-1124

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Mohamed El-Aalaoui, Rachid Bouharroud, Mohamed Sbaghi, Mustapha El Bouhssini and Lahoucine Hilali (2019)
First study of the biology of Cryptolaemus montrouzieri and its potential to feed on the mealybug Dactylopius opuntiae (Hemiptera: Dactylopiidae) under laboratory conditions in Morocco
Archives of Phytopathology and Plant Protection 52 (13-14), 1112-1124
Abstract: Dactylopius opuntiae, is known as specific Opuntia cochineal in many countries around the world. This sap-sucking insect was first detected in Morocco in 2014. To address the problem, the feeding potential of different development stages of Cryptolaemus montrouzieri Mulsant, a biological control agent against mealybugs, was investigated on different development stages of D. opuntiae. Fourth instar larvae and adults of C. montrouzieri were the most voracious feeders on different instars of the mealybug. The numbers of mealybug eggs consumed by first, second, third and fourth instar larva and adults of C. montrouzieri were 36.18 ± 1.84, 68.08 ± 4.17, 280.55 ± 5.41, 540.55 ± 5.35, 6514.13 ± 64.28, respectively. The numbers of mealybug nymphs consumed by the same stages of C. montrouzieri were 35.43 ± 1.75, 67.73 ± 3.88, 279.85 ± 5.58, 539.63 ± 5.08 and 6501.7 ± 81.94 (first instars) and 34.83 ± 1.20, 57.45 ± 1.22, 83.80 ± 1.92, 213.65 ± 3.46 and 6013.23 ± 35.46 (second instars), respectively. The corresponding figures for adult female mealybugs were 1.40 ± 0.78, 10.65 ± 1.83, 18.58 ± 1.24, 25.23 ± 1.10 and 197.15 ± 3.29, respectively. The egg, larval, prepupal, pupal and adult stages occupied 3.36–3.69, 20.21–27.59, 1.31–1.59, 10.62–10.72 and 96.10–102.51 days, respectively when the coccinellid was reared on different stages of D. opuntiae. The results indicate that C. montrouzieri has the potential to be used as a biocontrol agent in Morocco.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Mustapha El Bouhssini

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Dactylopius opuntiae
Cryptolaemus montrouzieri (predator) Dactylopius opuntiae Morocco