Effects of Sublethal Doses of Contact Insecticides on Offspring Production of Different Granary Weevil Populations
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)...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Institute of Pesticides and Environmental Protection
2010-01-01
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| Series: | Pesticidi i Fitomedicina |
| Subjects: | |
| Online Access: | http://www.pesting.org.rs/download.php/documents/25-1/25-1%2079-85.pdf |
| _version_ | 1819039026213027840 |
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| author | Petar Kljajić Ilija Perić |
| author_facet | Petar Kljajić Ilija Perić |
| author_sort | Petar Kljajić |
| collection | DOAJ |
| description | 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 reductionof selected weevils from Belgrade Port, 83%, was recorded in F1 generation after treatement 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 intheir efficacy against treated granary weevil populations, may also provoke an increase in insect numbers in the following generations. |
| first_indexed | 2024-12-21T08:46:39Z |
| format | Article |
| id | doaj.art-cd775e0afc6a455f93df21a24b444f86 |
| institution | Directory Open Access Journal |
| issn | 1820-3949 |
| language | English |
| last_indexed | 2024-12-21T08:46:39Z |
| publishDate | 2010-01-01 |
| publisher | Institute of Pesticides and Environmental Protection |
| record_format | Article |
| series | Pesticidi i Fitomedicina |
| spelling | doaj.art-cd775e0afc6a455f93df21a24b444f862022-12-21T19:09:49ZengInstitute of Pesticides and Environmental ProtectionPesticidi i Fitomedicina1820-39492010-01-012517985Effects of Sublethal Doses of Contact Insecticides on Offspring Production of Different Granary Weevil PopulationsPetar KljajićIlija PerićThe 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 reductionof selected weevils from Belgrade Port, 83%, was recorded in F1 generation after treatement 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 intheir efficacy against treated granary weevil populations, may also provoke an increase in insect numbers in the following generations.http://www.pesting.org.rs/download.php/documents/25-1/25-1%2079-85.pdfSitophilus granarius populationsContact insecticidesSublethal effectsOffspring production |
| spellingShingle | Petar Kljajić Ilija Perić Effects of Sublethal Doses of Contact Insecticides on Offspring Production of Different Granary Weevil Populations Pesticidi i Fitomedicina Sitophilus granarius populations Contact insecticides Sublethal effects Offspring production |
| title | Effects of Sublethal Doses of Contact Insecticides on Offspring Production of Different Granary Weevil Populations |
| title_full | Effects of Sublethal Doses of Contact Insecticides on Offspring Production of Different Granary Weevil Populations |
| title_fullStr | Effects of Sublethal Doses of Contact Insecticides on Offspring Production of Different Granary Weevil Populations |
| title_full_unstemmed | Effects of Sublethal Doses of Contact Insecticides on Offspring Production of Different Granary Weevil Populations |
| title_short | Effects of Sublethal Doses of Contact Insecticides on Offspring Production of Different Granary Weevil Populations |
| title_sort | effects of sublethal doses of contact insecticides on offspring production of different granary weevil populations |
| topic | Sitophilus granarius populations Contact insecticides Sublethal effects Offspring production |
| url | http://www.pesting.org.rs/download.php/documents/25-1/25-1%2079-85.pdf |
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