Effect of leaflets palm date biochemical composition on infestation rate by the white cochineal Parlatoria blanchardi (Himiptera-Diaspididae)

Paper Details

Research Paper 01/08/2021
Views (394) Download (20)

Effect of leaflets palm date biochemical composition on infestation rate by the white cochineal Parlatoria blanchardi (Himiptera-Diaspididae)

Benameur-Saggou Hayet, Benbrahim Keltoum, Rekia Chennouf, Idder Mohamed Azzedine
Int. J. Biosci.19( 2), 129-138, August 2021.
Certificate: IJB 2021 [Generate Certificate]


The white cochineal Parlatoria blanchardi is the most redoubtable pest of date palm Phoenix dactylifera in the palm groves of the region of Ouargla (Sahara Desert of Algeria). In order to explain the food preferences of the insect pest, this study aims to relate the variation of infestation rates caused by the white cochineal to biochemical characteristics of leaflets of two date palm cultivars Deglet-Nour and Ghars. The study of the dynamic populations of the white cochineal showed that it had the same developmental pattern in both cultivars (P=0.107 for the study months). Three annual generations are recorded, of which the spring generation is the most dangerous, with a mean number of individuals of 77.72±6.07 at Deglet-Nour and 46.10±5.14 at Ghars. Estimating infestation rates of Parlatoria blanchardi showed that the cultivar Deglet-Nour has higher infestation rates (36.34%±9.92) compared to Ghars (7.08%±2.34). The highest infestation rates are recorded during the months of April, May and October. Biochemical analyses were performed on leaflets of the two cultivars and the study of the principal components (PCA) shows that the Ghars cultivar has a higher cationic ratio K+/ Ca2++ Mg2+ (0.34%±0.11) than the Deglet-Nour (0.29%±0.04) rich on Mg2+ (0.33±0.02) and Ca2+ (1.03±0.13), which contributes to its resistance against the pest.


Achoura A. 2013. Contribution to the knowledge of the effects of oasis ecological parameters on the fluctuations in numbers of the date palm scale Parlatoria blanchardi Targ. 1868 (Homoptera, Diaspididae) in the Biskra region. Doctoral Thesis. University of Biskra, Algeria, 107-116.

Allam A. 2013. Infestation of date palms by Parlatoria blanchardi. European University Edition (Eds.). Germany, 45-101.

Audigie CL, Figarella J, Zonszain F. 1980. Manuel d’Analyses Biochimiques. Doin, Paris (Eds.). France, 270.

Bakry MMS, Roya A, Abdrabbo MAA, Moussa SFM. 2015. Estimate the effect of climatic factors on population density of Parlatoria date scale insect, Parlatoria blanchardi by different models of correlation and regression. Academic Research Journal of Agricultural Science and Research 3(8), 207-218. http://dx.doi.org/10.14662/ARJASR2015.044

Benameur Saggou H. 2018. Utilisation de Pharoscymnus ovoideus et Pharoscymnus numidicus (Coleoptera-Coccinellidae) dans une tentative de lutte biologique contre Parlatoria blanchardi Targ. (Homoptera-Diaspididae) dans les palmeraies à Ouargla (Sud-est algérien). Doctoral Thesis. University of Ouargla, Algeria, 1-6.

Berenbaum R. 1995. The chemistry of defense. Proceeding National Academy of Sciences 92, 2-8.

Bonvalet A. 1981. L’analyse minérale de plantes oléagineuse 36(2), 83-92.

Boughezala Hamad M. 2011. Etude bioécologique de la cochenille Blanche Parlatoria blanchardi Targioni-Tozzetti, 1892 (Homoptera-Diaspididae) sur quelques variétés de dattes à de Ouargla. Eco-engineering thesis. University of Ouargla, Algeria, 68-79.

Boussaid L, Maache L. 2001. Données sur la bio-écologie et la   dynamique des      populations de Parlatoria blanchardi Targ. dans la cuvette d’Ouargla. Mem Agr engineer, IAS Ouargla, Algeria, 72-80.

Bouguedoura N, Bennaceur N, Babahani S, Benziouche SE. 2015. Date Palm Status and Perspective in Algeria. Date Palm Genetic Resources and Utilisation book. Al-Khayri et al. (Eds.), Volume 1: Africa and the Americas. http://dx.doi.org/10.1007/978-94-017-9694-1_4

Brun J, Marro JP, Iperti G. 1998. La lutte biologique. Les ravageurs du palmier dattier. INRA and URBIC (Eds.), Paris, 5-6.

Chaboussou F. 1975. Les facteurs culturaux dans la résistance des agrumes vis-à-vis des ravageurs. Seminars on citrus insects and mites. Algeria, 43.

El-Said MI.  2000. Survey of date palm insects in North Sinai with special reference to the ecology and biology of the species, Parlatoria blanchardi (Targ-Tozz), supper family Coccoidea. M Sc Thesis Faculty of Agriculture, Cairo Univ. Egypt, 97-98.

El-Sherif SI, Elwan EA, Abd-El-Razik MIE. 2001. Ecological observations on the date palm Parlatoria scale, Parlatoria blanchardi (Targ-Tozz) (Homoptera: Diaspididae) in North Sinai, Egypt. Second International Conference on Date Palms. Al-Ain, UAE, 25-27.

Euverte G. 1962. Programme d’étude de Parlatoria blanchardi TARG et ses prédateurs      sur la station de Kankossa. Report I F A C, 70-75.

Haddad L. 2000. Quelques données sur la bio-écologie d’Ectomyelois ceratoniae dans les régions de Touggourt et Ouargla, en vue d’une éventuelle lutte contre ce déprédateur. Mem Agr engineer, IAS. Ouargla, Algeria, 48-49.

Harborne JB. 1993. Introduction to chemical ecology. Academic press (Eds.). London, 186-207.

Hellali R. 2002. Rôle du potassium dans la physiologie de la plante. Workshop on Potassium Fertilization Management, Research Achievements and Perspectives. Tunisia, 6-7.

Idder MA. 2011. Lutte biologique en palmeraies algériennes: cas de la cochenille blanche Parlatoria blanchardi, de la pyrale des dattes Ectomyelois ceratoniae et du boufaroua Oligonychus afrasiaticus. Doctoral thesis in Agronomic Sciences, ENSA, El-Harrach, Algeria, 52-78.

Idder-Ighili H. 2015. Interaction entre les cultivars des dattes et la faune associée dans la région de Ouargla (Sud-est algérien). Doctoral thesis in Agronomic Sciences, University of Ouargla, Algeria, 62-64.

Jabnoune M. 2008. Plant adaptation to saline stress: characterisation of sodium and     potassium transporters of the HKT family in rice. Doctoral thesis. International Centre for Higher Studies, Montpellier, France, 10-22.

Mangold JR. 1978. Attraction of Euphasiopteryx ochracea, Corethrella sp and gryllids to broadcast songs of the southern male cricket. The Florida Entomologist 61(2), 57-61.

Madkouri M. 1978. Etude bioécologique de Parlatoria blanchardi Targ. (Homoptera-Diaspididae) et d’un prédateur Chilocorus cacti Scop. (Coleoptera- Coccinellidae) en vue de son éventuelle utilisation dans les palmeraies de Sud Marocain. The agriculture research notebooks 34, 75-91.

Mehaoua MS. 2009. Etude du niveau d’infestation par la cochenille blanche Parlatoria  blanchardi (Homoptera-Diaspididae) sur trois variétés de palmier dattier dans une    palmeraie à Biskra. Mem. Magister in Agronomic Sciences, INA, El-Harrach, Algeria, 98-115.

Nadir M. 1972. K-Ca, K-Mg antagonisms and the influence of potassium on other      mineral elements, in particular the different forms of calcium in Citrus leaves. Revue Al Awamia 44, 81-108.

Nadji N. 2011. Influence de différents facteurs écologiques sur la dynamique des populations de la Cochenille blanche Parlatoria blanchardi Targ., 1868 (Homoptera, Diaspididae) dans une palmeraie à Biskra. Masters thesis, université mohamed khider – Biskra, 26-43.

Smirnoff W. 1957. La cochenille du palmier dattier (Parlatoria blanchardi Targ.) en      Afrique du Nord. Comportement, importance économique, prédateurs et lutte biologique. Revue Entomophaga 2, 1-98.

Pousset J. 2008. Agriculture naturelle. Agridicisions (Eds.).Paris, France, 166-174.

Vet LEM, Dicke M. 1992. Ecology of infochemical use by natural enemies in a tritrophic context. Annual Review of Entomology 37, 141-172. http://dx.doi.org/10.1146/annurev.en.37.010192.001041