Lethal and sublethal effects of a chitin synthesis inhibitor, lufenuron, against Glyphodes pyloalis Walker (Lepidoptera: Pyralidae)
Glyphodes pyloalis Walker is a serious pest of mulberry trees in Iran. In this study, lethal (LC50 = 19 ppm) and sublethal effects (LC10 = 3.74 andLC30 = 9.77 ppm) of lufenuron were evaluated against 4th instar larvae of G. pyloalis. After treating the larvae at LC30 and LC50 level, most of them die...
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| Format: | Article |
| Language: | English |
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University of Tarbiat Modares
2016-06-01
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| Series: | Journal of Crop Protection |
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| Online Access: | http://jcp.modares.ac.ir/article-3-522-en.html |
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| author | Frouzan Piri Aliabadi Ahad Sahragard Mohammad Ghadamyari |
| author_facet | Frouzan Piri Aliabadi Ahad Sahragard Mohammad Ghadamyari |
| author_sort | Frouzan Piri Aliabadi |
| collection | DOAJ |
| description | Glyphodes pyloalis Walker is a serious pest of mulberry trees in Iran. In this study, lethal (LC50 = 19 ppm) and sublethal effects (LC10 = 3.74 andLC30 = 9.77 ppm) of lufenuron were evaluated against 4th instar larvae of G. pyloalis. After treating the larvae at LC30 and LC50 level, most of them died during the molting process and only a few individuals developed to the 5th larval instar. The highest rate of mortality wasobserved in 5th larval (68.42%) and pre-pupal (59.57%) stages at LC50 concentration. Also, lufenuron caused an increase in larval, pre-pupal and pupal developmental periods. The successful pupation decreased to 53.64% at the LC30. Also, no prepupa molted to pupation after treatment of larvae at the LC50. Larval weight was significantly reduced at 48, 72 and 96 h after treatment, compared to the control. Adult emergence and female longevity were also reduced at LC30. The LC30 of lufenuron negatively affected reproduction of G. pyloalis. Larval content of carbohydrate and protein were decreased significantly 48 and 72 h after treatment, however, lipid and glycogen content were decreased significantly only 72 h after treatment at LC10, LC30 or LC50. Findings indicated adverse effects on some biological and biochemical parameters at lethal and sublethal concentrations of lufenuron which necessitate further investigations for its application in an integrated management of G. pyloalis. |
| first_indexed | 2024-04-12T17:43:08Z |
| format | Article |
| id | doaj.art-1e356d949fd646e8a7c64ddf9257b3c4 |
| institution | Directory Open Access Journal |
| issn | 2251-9041 2251-905X |
| language | English |
| last_indexed | 2024-04-12T17:43:08Z |
| publishDate | 2016-06-01 |
| publisher | University of Tarbiat Modares |
| record_format | Article |
| series | Journal of Crop Protection |
| spelling | doaj.art-1e356d949fd646e8a7c64ddf9257b3c42022-12-22T03:22:44ZengUniversity of Tarbiat ModaresJournal of Crop Protection2251-90412251-905X2016-06-0152203214Lethal and sublethal effects of a chitin synthesis inhibitor, lufenuron, against Glyphodes pyloalis Walker (Lepidoptera: Pyralidae)Frouzan Piri Aliabadi0Ahad Sahragard1Mohammad Ghadamyari2 Department of Plant Protection, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran. Department of Plant Protection, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran. Department of Plant Protection, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran. Glyphodes pyloalis Walker is a serious pest of mulberry trees in Iran. In this study, lethal (LC50 = 19 ppm) and sublethal effects (LC10 = 3.74 andLC30 = 9.77 ppm) of lufenuron were evaluated against 4th instar larvae of G. pyloalis. After treating the larvae at LC30 and LC50 level, most of them died during the molting process and only a few individuals developed to the 5th larval instar. The highest rate of mortality wasobserved in 5th larval (68.42%) and pre-pupal (59.57%) stages at LC50 concentration. Also, lufenuron caused an increase in larval, pre-pupal and pupal developmental periods. The successful pupation decreased to 53.64% at the LC30. Also, no prepupa molted to pupation after treatment of larvae at the LC50. Larval weight was significantly reduced at 48, 72 and 96 h after treatment, compared to the control. Adult emergence and female longevity were also reduced at LC30. The LC30 of lufenuron negatively affected reproduction of G. pyloalis. Larval content of carbohydrate and protein were decreased significantly 48 and 72 h after treatment, however, lipid and glycogen content were decreased significantly only 72 h after treatment at LC10, LC30 or LC50. Findings indicated adverse effects on some biological and biochemical parameters at lethal and sublethal concentrations of lufenuron which necessitate further investigations for its application in an integrated management of G. pyloalis.http://jcp.modares.ac.ir/article-3-522-en.htmlglyphodes pyloalislufenuronfecunditysub-lethal effectsigr |
| spellingShingle | Frouzan Piri Aliabadi Ahad Sahragard Mohammad Ghadamyari Lethal and sublethal effects of a chitin synthesis inhibitor, lufenuron, against Glyphodes pyloalis Walker (Lepidoptera: Pyralidae) Journal of Crop Protection glyphodes pyloalis lufenuron fecundity sub-lethal effects igr |
| title | Lethal and sublethal effects of a chitin synthesis inhibitor, lufenuron, against Glyphodes pyloalis Walker (Lepidoptera: Pyralidae) |
| title_full | Lethal and sublethal effects of a chitin synthesis inhibitor, lufenuron, against Glyphodes pyloalis Walker (Lepidoptera: Pyralidae) |
| title_fullStr | Lethal and sublethal effects of a chitin synthesis inhibitor, lufenuron, against Glyphodes pyloalis Walker (Lepidoptera: Pyralidae) |
| title_full_unstemmed | Lethal and sublethal effects of a chitin synthesis inhibitor, lufenuron, against Glyphodes pyloalis Walker (Lepidoptera: Pyralidae) |
| title_short | Lethal and sublethal effects of a chitin synthesis inhibitor, lufenuron, against Glyphodes pyloalis Walker (Lepidoptera: Pyralidae) |
| title_sort | lethal and sublethal effects of a chitin synthesis inhibitor lufenuron against glyphodes pyloalis walker lepidoptera pyralidae |
| topic | glyphodes pyloalis lufenuron fecundity sub-lethal effects igr |
| url | http://jcp.modares.ac.ir/article-3-522-en.html |
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