scholarly journals An analysis of inherited factors affecting the sex ratio in the rice weevil, Sitophilus oryzae L.

Heredity ◽  
1985 ◽  
Vol 55 (2) ◽  
pp. 145-150 ◽  
Author(s):  
Graham J Holloway
Keyword(s):  
Sex Ratio ◽  
Sitophilus Oryzae ◽  
Rice Weevil ◽  
Factors Affecting

scholarly journals Factors affecting the insecticidal efficacy of the diatomaceous earth formulation SilicoSec® against adults of the rice weevil, Sitophilus oryzae (L.) (Coleoptera: Curculionidae)

2006 ◽  
Vol 41 (2) ◽  
pp. 201-207 ◽  
Author(s):  
Christos G. Athanassiou ◽  
Nickolas G. Kavallieratos ◽  
Constantin B. Dimizas ◽  
Basileios J. Vayias ◽  
Željko Tomanović
Keyword(s):  
Diatomaceous Earth ◽  
Sitophilus Oryzae ◽  
Rice Weevil ◽  
Factors Affecting ◽  
Insecticidal Efficacy

scholarly journals Potential insecticidal activity of four essential oils against the rice weevil, Sitophilus oryzae (L.) (Coleoptera: Curculionidae)

BioResources ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. 7767-7783
Author(s):  
Mohamed E. Tawfeek ◽  
Hayssam M. Ali ◽  
Mohammad Akrami ◽  
Mohamed Z. M. Salem
Keyword(s):  
Mass Spectrometry ◽  
Alkaline Phosphatase ◽  
Sitophilus Oryzae ◽  
Imperata Cylindrica ◽  
Rice Weevil ◽  
Gas Chromatograph ◽  
Cymbopogon Citratus ◽  
Phytochemical Composition ◽  
Germacrene D ◽  
Gas Chromatograph Mass Spectrometry

Oils extracted from Cymbopogon citratus, Lantana camara, Artemisia camphorata, and Imperata cylindrica plants were used as potential insecticides against the rice weevil, Sitophilus oryzae (L.) (Coleoptera: Curculionidae). The phytochemical composition of the isolated oils was identified by gas chromatograph-mass spectrometry (GC-MS). Oil contact toxicities were evaluated against the adults of S. oryzae. The activities of acetylcholinesterase (AChE), alkaline phosphatase (ALP), and transaminases enzymes (AST) were measured. L. camara oil (LC50 = 9.81 mg/cm2) demonstrated the highest effect, followed by C. citratus oil (LC50 = 10.89 mg/cm2), A. camphorata EO (LC50 = 16.12 mg/cm2), and I. cylindrica oil (LC50= 36.85 mg/cm2) against the adults of S. oryzae. The inhibition percentages of AChE were 38.8, 41.7, 35.0, and 27.2%; ALP were 42.4, 49.3, 28.1, and 18.7%; AST were 33.9, 38.7, 20.8, and 11.8%; and ALT were 22.7, 30.5, 14.6, and 9.6% after treated S. oryzae with oils from C. citratus, L. camara, A. camphorata and I. cylindrica, respectively. The highest abundant compounds in C. citratus were geranial (25.95%), nerylacetal (8.85%), and neral (8.45%), in L. camara were caryophyllene (12.2%), and 3-elemene (8.89%), in A. camphorata were germacrene D-4-ol (20.83%), and borneol (19.47%), and in I. cylindrica were 5-phenylundecane (10.68%), and 6-phenyldodecane (8.70%).

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