International Journal of Entomology Research

International Journal of Entomology Research


International Journal of Entomology Research
International Journal of Entomology Research
Vol. 6, Issue 3 (2021)

Study of the natural and parasitic mortality of the white scale Parlatoria blanchardi targ., 1868 of the date palm in the region of Biskra


Hana Chebaani, Nacer Tarai, Billal Nia, Khalid Jaber AL-Hussainawy, Sabreen Mohsen Hasan

The date palm is the fruit tree par excellence of the Saharan desert where it plays a role in both an economic role thanks to the production of dates which are rich in nutrients, provides a multitude of secondary products, and an ecological role since it gives its structure to the oasis. However, this phoenicultural potential remains very fragile against certain formidable diseases and pests. The white scale is among the most dangerous pests that threaten on the date palm. This insect is provided with a mouthpiece type sucking sucker equipped with a rostrum allowing it to attach and feed sap. This leads to the weakening of the tree and causes a reduction in the yield and commercial quality of the dates. Abiotic factors (temperature) and biotic factors (predators) play a key role in the proliferation of the white scale. The natural enemies of Parlatoria blanchardi in the Biskra region are Chrysopa vulgaris, Pharoscymnus numidicus, Pharoscymnus ovoideus, Cybocephalus palmarum and a predatory mite.
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How to cite this article:
Hana Chebaani, Nacer Tarai, Billal Nia, Khalid Jaber AL-Hussainawy, Sabreen Mohsen Hasan. Study of the natural and parasitic mortality of the white scale Parlatoria blanchardi targ., 1868 of the date palm in the region of Biskra. International Journal of Entomology Research, Volume 6, Issue 3, 2021, Pages 11-15
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