Effect of sub lethal concentrations of thiocyclam insecticide on biological parameters of Liriomyza sativae (Diptera: Agromyzidae) under laboratory conditions
Liriomyza sativae Blanchard is considered as one of the most important pests of greenhouse and farm vegetables. According to the recommendation of using thiocyclam insecticide against the mentioned pest, in the present study the lethal and sub-lethal effects (LC10= 49.15, LC20= 87.1 and LC30= 131.5...
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| Format: | Article |
| Language: | English |
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Entomological Society of Iran
2023-02-01
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| Series: | نامه انجمن حشرهشناسی ایران |
| Subjects: | |
| Online Access: | https://jesi.areeo.ac.ir/article_128222_7a5345905943a05ddd9e3603faa79cd2.pdf |
| _version_ | 1797870966229958656 |
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| author | Maryam Forouzan Aziz Sheikhi Garjan |
| author_facet | Maryam Forouzan Aziz Sheikhi Garjan |
| author_sort | Maryam Forouzan |
| collection | DOAJ |
| description | Liriomyza sativae Blanchard is considered as one of the most important pests of greenhouse and farm vegetables. According to the recommendation of using thiocyclam insecticide against the mentioned pest, in the present study the lethal and sub-lethal effects (LC10= 49.15, LC20= 87.1 and LC30= 131.5 a.i. mg/L) of thiocyclam insecticide (Evisect® SP50%) was evaluated on the biological parameters of this pest under laboratory conditions. The method used in the experiments was Leaf dip technique for leaves containing fly larva. Data analysis was performed using Age-stage two sex life table theory. The results showed that adult lifespan/longevity was significantly reduced by sublethal concentration. Fecundity was also affected by the studied concentrations and the lowest amount of this parameter (34.23 eggs/female) was recorded in LC30 concentration. Accordingly, sublethal concentrations reduced the net reproductive rate (R0), and there were significant differences among the values of this parameter at all treatments tested when compared with control (control: 78.01, LC10: 63.76, LC20: 33.6 and LC30: 11.58 offspring/individual). Other parameters such as intrinsic rate of increase (r), finite rate of increase (l) were also significantly lower than the control. The highest estimated values for r and λ were recorded at control (0.19 and 1.21 day-1, respectively). Finally, with the reduced rate of development for individuals treated with sublethal concentrations, the mean generation time (T) was significantly higher in individuals exposed to any concentration tested, So that it was the lowest in the control with 22.49 days and the highest in LC30 with 26.25 days. The findings of the present research indicate that thiocyclam insecticide has a good potential in controlling the leaf miner in lethal and sublethal concentrations, and the importance of considering the role of sublethal effects when attempting to evaluate the total impacts of specific pesticide on an insect pest population and its natural enemy. |
| first_indexed | 2024-04-10T00:35:42Z |
| format | Article |
| id | doaj.art-d344d24785ac4a81b4f6f604415e7205 |
| institution | Directory Open Access Journal |
| issn | 0259-9996 2783-3968 |
| language | English |
| last_indexed | 2024-04-10T00:35:42Z |
| publishDate | 2023-02-01 |
| publisher | Entomological Society of Iran |
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| series | نامه انجمن حشرهشناسی ایران |
| spelling | doaj.art-d344d24785ac4a81b4f6f604415e72052023-03-14T17:20:44ZengEntomological Society of Iranنامه انجمن حشرهشناسی ایران0259-99962783-39682023-02-0142427929010.52547/jesi.42.4.3128222Effect of sub lethal concentrations of thiocyclam insecticide on biological parameters of Liriomyza sativae (Diptera: Agromyzidae) under laboratory conditionsMaryam Forouzan0Aziz Sheikhi Garjan1Agricultural and natural resources research center of west Azarbaijan, AREEO, Urmia, IranIranian Research Institute of Plant Protection, AREEO, Tehran, IranLiriomyza sativae Blanchard is considered as one of the most important pests of greenhouse and farm vegetables. According to the recommendation of using thiocyclam insecticide against the mentioned pest, in the present study the lethal and sub-lethal effects (LC10= 49.15, LC20= 87.1 and LC30= 131.5 a.i. mg/L) of thiocyclam insecticide (Evisect® SP50%) was evaluated on the biological parameters of this pest under laboratory conditions. The method used in the experiments was Leaf dip technique for leaves containing fly larva. Data analysis was performed using Age-stage two sex life table theory. The results showed that adult lifespan/longevity was significantly reduced by sublethal concentration. Fecundity was also affected by the studied concentrations and the lowest amount of this parameter (34.23 eggs/female) was recorded in LC30 concentration. Accordingly, sublethal concentrations reduced the net reproductive rate (R0), and there were significant differences among the values of this parameter at all treatments tested when compared with control (control: 78.01, LC10: 63.76, LC20: 33.6 and LC30: 11.58 offspring/individual). Other parameters such as intrinsic rate of increase (r), finite rate of increase (l) were also significantly lower than the control. The highest estimated values for r and λ were recorded at control (0.19 and 1.21 day-1, respectively). Finally, with the reduced rate of development for individuals treated with sublethal concentrations, the mean generation time (T) was significantly higher in individuals exposed to any concentration tested, So that it was the lowest in the control with 22.49 days and the highest in LC30 with 26.25 days. The findings of the present research indicate that thiocyclam insecticide has a good potential in controlling the leaf miner in lethal and sublethal concentrations, and the importance of considering the role of sublethal effects when attempting to evaluate the total impacts of specific pesticide on an insect pest population and its natural enemy.https://jesi.areeo.ac.ir/article_128222_7a5345905943a05ddd9e3603faa79cd2.pdfvegetable leaf minerlife tablesub lethal effectspopulation growth parameters |
| spellingShingle | Maryam Forouzan Aziz Sheikhi Garjan Effect of sub lethal concentrations of thiocyclam insecticide on biological parameters of Liriomyza sativae (Diptera: Agromyzidae) under laboratory conditions نامه انجمن حشرهشناسی ایران vegetable leaf miner life table sub lethal effects population growth parameters |
| title | Effect of sub lethal concentrations of thiocyclam insecticide on biological parameters of Liriomyza sativae (Diptera: Agromyzidae) under laboratory conditions |
| title_full | Effect of sub lethal concentrations of thiocyclam insecticide on biological parameters of Liriomyza sativae (Diptera: Agromyzidae) under laboratory conditions |
| title_fullStr | Effect of sub lethal concentrations of thiocyclam insecticide on biological parameters of Liriomyza sativae (Diptera: Agromyzidae) under laboratory conditions |
| title_full_unstemmed | Effect of sub lethal concentrations of thiocyclam insecticide on biological parameters of Liriomyza sativae (Diptera: Agromyzidae) under laboratory conditions |
| title_short | Effect of sub lethal concentrations of thiocyclam insecticide on biological parameters of Liriomyza sativae (Diptera: Agromyzidae) under laboratory conditions |
| title_sort | effect of sub lethal concentrations of thiocyclam insecticide on biological parameters of liriomyza sativae diptera agromyzidae under laboratory conditions |
| topic | vegetable leaf miner life table sub lethal effects population growth parameters |
| url | https://jesi.areeo.ac.ir/article_128222_7a5345905943a05ddd9e3603faa79cd2.pdf |
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