Altered susceptibility of granary weevil Sitophilus granarius (L.) (Coleoptera: Curculionidae) populations to insecticides after selection with pirimiphos-methyl and deltamethrin

2007 ◽  
Vol 43 (2) ◽  
pp. 134-141 ◽  
Author(s):  
Petar Kljajić ◽  
Ilija Perić
Keyword(s):  
Sitophilus Granarius ◽  
Granary Weevil ◽  
Pirimiphos Methyl

scholarly journals Effects of sublethal doses of contact insecticides on offspring production of different granary weevil populations

2010 ◽  
Vol 25 (1) ◽  
pp. 79-85 ◽  
Author(s):  
Petar Kljajic ◽  
Ilija Peric
Keyword(s):  
Laboratory Population ◽  
Sitophilus Granarius ◽  
Wheat Grain ◽  
Granary Weevil ◽  
Offspring Production ◽  
Pirimiphos Methyl ◽  
Sublethal Doses ◽  
F2 Generation ◽  
Contact Insecticides ◽  
F1 Generation

The effects of prior contact of granary weevil (Sitophilus granarius L.) parents from a laboratory population, a Belgrade Port population (selected with LD70 pirimiphos-methyl) and a Bijeljina population (selected with LD70 deltamethrin) with filter paper treated with sublethal doses (LD20 and LD50) of the insecticides dichlorvos, malathion, chlorpyrifos-methyl, pirimiphos-methyl and deltamethrin on offspring production of the surviving insects in F1 generation (after 10 weeks) and F2 generation (after 16 weeks) in untreated wheat grain was examined under laboratory conditions. Offspring reduction of laboratory weevils was highest at 96% in the F1 generation after parents' contact with LD50 dichlorvos, and lowest in F2 generation after contact with LD50 pirimiphos-methyl with 84% more insects than in the control. The highest offspring reduction of selected weevils from Belgrade Port, 83%, was recorded in F1 generation after treatment with LD50 dichlorvos and chlopyrifos-methyl, and the lowest in F1 and F2 generations after contact with LD50 pirimiphos-methyl, around 44%. The highest offspring reduction of the selected weevils from Bijeljina, 100%, was found in F1 and F2 generations after contact with LD50 dichlorvos, malathion and deltamethrin, and the lowest again in F1 and F2 generations after contact with LD20 chlorpyrifos-methyl, in which case insect numbers were some 130% higher than in the control. The results indicate that sublethal insecticide doses, apart from a significant decrease in their efficacy against treated granary weevil populations, may also provoke an increase in insect numbers in the following generations.

EFFECTS OF PHOTOPERIOD ON THE BIOLOGY OF THE GRANARY WEEVIL, SITOPHILUS GRANARIUS L. IN THE LABORATORY

2012 ◽  
Vol 3 (11) ◽  
pp. 1165-1171
Author(s):  
Y. Darwish ◽  
Y. Omar ◽  
R. Hassan ◽  
M. Mahmoud
Keyword(s):  
Sitophilus Granarius ◽  
Granary Weevil

Granary Weevil, Sitophilus granarius (Linnaeus) (Coleoptera: Curculionidae)

2008 ◽  
pp. 1653-1653
Author(s):  
Stewart B. Peck ◽  
Carol C. Mapes ◽  
Netta Dorchin ◽  
John B. Heppner ◽  
Eileen A. Buss ◽  
...  
Keyword(s):  
Sitophilus Granarius ◽  
Granary Weevil

scholarly journals Contributions to the Knowledge of Morphology of the Granary Weevil (Sitophilus Granarius L.), Major Pest of the Stored Cereals

1970 ◽  
Vol 66 (1) ◽  
Author(s):  
Adrian DINUŢĂ ◽  
Horia BUNESCU ◽  
Ilonka BODIŞ
Keyword(s):  
Sexual Dimorphism ◽  
Scientific Literature ◽  
Sitophilus Granarius ◽  
Granary Weevil ◽  
Complex Study ◽  
Sexual Pheromones ◽  
The World ◽  
Major Pest

To solve the multiple practical aspects raised by the achieving of cereals stocks protection (especially wheat and corn) against granary weevil Sitophilus granarius L., the research aimed a complex study on the sexual dimorphism at this species, aspect which help to prevent the weevils damages using unpollutant methods (with the aid of sexual pheromones, ovogenesis inhibitors, etc.). Due to the summarily data in the scientific literature of the world refering to the sexual dimorphism of the species, a detailed study was made within the Entomology Laboratory at the Faculty of Agriculture of USAMV Cluj-Napoca and at the Center of Electronical Microscopy of Babeş-Bolyai University in Cluj-Napoca (Romania), during 2005-2009

scholarly journals The RAPD Analysis of Genetic Variability in the Granary Weevil (Sitophilus Granarius L.) Populations

2008 ◽  
Vol 48 (4) ◽  
Author(s):  
Katarzyna Nowaczyk ◽  
Aleksandra Obrępalska-Stęplowska ◽  
Magdalena Gawlak ◽  
Paweł Olejarski ◽  
Jan Nawrot
Keyword(s):  
Genetic Variability ◽  
Rapd Analysis ◽  
Sitophilus Granarius ◽  
Granary Weevil

GROWTH AND DEVELOPMENT OF LARVAE OF THE GRANARY WEEVIL, SITOPHILUS GRANARIUS (COLEOPTERA: CURCULIONIDAE), ON NATURAL AND MERIDIC DIETS

1973 ◽  
Vol 105 (2) ◽  
pp. 249-256 ◽  
Author(s):  
J. E. Baker ◽  
J. M. Mabie
Keyword(s):  
Wheat Flour ◽  
Growth Rates ◽  
Adult Stage ◽  
Larval Growth ◽  
Pupal Stage ◽  
Sitophilus Granarius ◽  
Granary Weevil ◽  
Whole Wheat Flour ◽  
Whole Wheat ◽  
Meridic Diet

AbstractA procedure is described for obtaining free eggs and first-stage larvae of Sitophilus granarius (L.) and rearing the larvae to the adult stage on whole wheat, corn, and rice flours and on diet 2, a casein–starch-based meridic diet.Larval growth rates of males and females reared at 29 °C and 65% R.H. on whole wheat flour were comparable although males attained a higher maximum mean weight. Days to 50% adult emergence (eclosion) were 25.5 and 26.5 for females and males, respectively.Larval growth rates on whole wheat flour were comparable with those on whole corn flour but were better than the rates obtained on whole rice flour; however, growth on diet 2 was improved compared with that on whole wheat flour. The mean weights of 14-day-old larvae were 2.51 ±.40 mg and 1.25 ±.16 mg for those reared on diet 2 and wheat flour, respectively. Similarly, survival to the adult stage was slightly greater (79%) on diet 2 than on wheat (70%). On diet 1, a casein–glucose-based meridic diet, no larvae developed to the pupal stage.

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