Lebbouz, Ismahane
(2017)
Etude de la pyrale des dattes Ectomyelois ceratoniae Zeller.,1839, dans la région de M’ghaier (Algérie), infestation,cycle de développement et essai bio insecticide.
Doctoral thesis, universit mohamed khaider -biskra.
Abstract
The date moth, Ectomyelois ceratoniae, infests date both in the field, on date palms
and the proliferation continuing during storage. Chemical interventions have failed until today
an effective protection of the date production because of the biology and feeding behavior of
this pest. The larvae of this moth, feeding and developing, inside the date where they are
protected there. This work aims to study the fluctuations of adult’s flight, development cycle
and monitoring of laying and infestation rate on three varieties at high market value which
are, Deglet Nour,r Degla beida and Ghars in the region of El Meghaier during date campaigns
of 2011, 2012 and 2013 years. In the quest for new substances from vegetable origin as
alternative to the chemical control, leafs extracts of plants; Peganum harmala, Cleome
arabica and Daphne gnidium were tested against different development stage of E.
ceratoniae.
Monitoring fluctuations of adults flight using pheromone traps, allowed us to detected
two main flight periods; one in spring and other in fall responsible for the dates attack and
other host fruits by E. ceratoniae. The individuals captured in summer appear to be the rough
outline of fall generation and those which are captured in winter seem to be the rough outline
of partial generation that will be completed its development cycle next year, its mean the
spring generation.
Monitoring of laying and infestation rates, shows that Deglet Nour variety is the most
attacked than Degla Beida and Ghars varieties and Tmar stage is the most attacked than
whatever the variety. The study of life cycle average indicates that duration of life cycle on
Deglet Nour is longer than duration of life cycle on Degla beida.
The biological control, show that P. harmala and C. arabica essential oils have
ovicidal, larvicidal and adulticidal activities. The date moth is more sensitive to C. arabica
essential oils than P. harmala essential oils while the results of treatment by aqueous extracts
of plants tested show that the date moth is more sensitive to P. harmala aqueous extract than
C. arabica and D. gnidium aqueous extracts. The contact treatment is more effective than
ingestion treatment whatever the aqueous extract used.
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Etude de la pyrale des dattes Ectomyelois ceratoniae Zeller.,1839, dans la région de M’ghaier (Algérie), infestation,cycle de développement et essai bio insecticide. (deposited 07 Apr 2019 09:34)
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