BIOCHEMICAL AND BIOLOGICAL EFFECTS OF INSECT GROWTH REGULATOR, TEFLUBENZURON ON PECTINOPHORA GOSSYPIELLA (SAUNDERS) (LEPIDOPTERA: GELECHIIDAE) AND COCCINELLA UNDECIMPUNCTATA (L.) (COLEOPTERA: COCCINELLIDAE)
Said, S., Raheem, A., Kandel, M. (2017). BIOCHEMICAL AND BIOLOGICAL EFFECTS OF INSECT GROWTH REGULATOR, TEFLUBENZURON ON PECTINOPHORA GOSSYPIELLA (SAUNDERS) (LEPIDOPTERA: GELECHIIDAE) AND COCCINELLA UNDECIMPUNCTATA (L.) (COLEOPTERA: COCCINELLIDAE). EKB Journal Management System, 2(2), 139-152. doi: 10.21608/mjapam.2017.125604
Saadiya M. Said; A. M. Abd El- Raheem; Mervat A. Kandel. "BIOCHEMICAL AND BIOLOGICAL EFFECTS OF INSECT GROWTH REGULATOR, TEFLUBENZURON ON PECTINOPHORA GOSSYPIELLA (SAUNDERS) (LEPIDOPTERA: GELECHIIDAE) AND COCCINELLA UNDECIMPUNCTATA (L.) (COLEOPTERA: COCCINELLIDAE)". EKB Journal Management System, 2, 2, 2017, 139-152. doi: 10.21608/mjapam.2017.125604
Said, S., Raheem, A., Kandel, M. (2017). 'BIOCHEMICAL AND BIOLOGICAL EFFECTS OF INSECT GROWTH REGULATOR, TEFLUBENZURON ON PECTINOPHORA GOSSYPIELLA (SAUNDERS) (LEPIDOPTERA: GELECHIIDAE) AND COCCINELLA UNDECIMPUNCTATA (L.) (COLEOPTERA: COCCINELLIDAE)', EKB Journal Management System, 2(2), pp. 139-152. doi: 10.21608/mjapam.2017.125604
Said, S., Raheem, A., Kandel, M. BIOCHEMICAL AND BIOLOGICAL EFFECTS OF INSECT GROWTH REGULATOR, TEFLUBENZURON ON PECTINOPHORA GOSSYPIELLA (SAUNDERS) (LEPIDOPTERA: GELECHIIDAE) AND COCCINELLA UNDECIMPUNCTATA (L.) (COLEOPTERA: COCCINELLIDAE). EKB Journal Management System, 2017; 2(2): 139-152. doi: 10.21608/mjapam.2017.125604

BIOCHEMICAL AND BIOLOGICAL EFFECTS OF INSECT GROWTH REGULATOR, TEFLUBENZURON ON PECTINOPHORA GOSSYPIELLA (SAUNDERS) (LEPIDOPTERA: GELECHIIDAE) AND COCCINELLA UNDECIMPUNCTATA (L.) (COLEOPTERA: COCCINELLIDAE)

Menoufia Journal of Plant Protection
Article 3, Volume 2, Issue 2, March and April 2017, Page 139-152  XML PDF (678.2 K)
Document Type: Original Article
DOI: 10.21608/mjapam.2017.125604
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Authors
Saadiya M. Said1; A. M. Abd El- Raheem1; Mervat A. Kandel2
1Economic Entomology & Agricultural Zoology Dept., Faculty of Agriculture, Menoufia University, Menoufia, Egypt.
2Plant Protection Research Institute, Agriculture Research Center, Dokki - Giza,
Abstract
This work was conducted to study the effects of the insect growth regulator, Teflubenzuron on survival, reproduction parameters of Pectinophora gossypiella, (Saunders) (Lepidoptera: Gelechiidae) as well as on pupae and adults of Coccinella undecimpunctata (L.) (Coleoptera: Coccinellidae). As for P. gossypiella the LC25 and LC50 values were 19.36 and 78.59 ppm, respectively, when the newly hatched larvae treated by Teflubenzuron, while LC90 value was 1189.25 ppm. Teflubenzuron treatments significantly prolonged the developmental time of survived larvae and pupae, causing longer life span compared to control. Statistical analysis of the obtained data demonstrated highly significant differences between oviposition and reproductive adults resulted from treated larvae and the control. The treatment with LC50 (78.59 ppm) of Teflubenzuron reduced the total protein content, while the phenoloxidase content was high significantly decreased. Chitinase activity was significantly increased causing failure of the pupation process. The transaminase enzymes activity (Got and GPT) were highly increased. Regarding to C. undecimpunctata, there were different mortality percentages of pupal after one to 7 days of exposing to 300, 150, 75, 37.5, 18.75 and 9.375 ppm of Teflubenzuron, where mortality and malformed was increased by increasing Teflubenzuron doses. Furthermore, pupa duration of the predator was significantly prolonged by increasing IGR doses, while adult longevity and fecundity were significantly decreased. Total protein and phenoloxidase values were significantly reduced when the pupal stages were treated and adult fed on P. gossypiella eggs treated with LC50 of Teflubenzuron.
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