Document Details
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Document Type |
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Thesis |
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Document Title |
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BIOLOGICAL AND HISTOPATHOLOGICAL STUDIES ON THE EFFECTS OF SOME BOTANICAL EXTRACTS ON THE COTTON LEAFWORM SPODOPTERA LITTORALIS (BOISD.) (LEPIDOPTERA : NOCTUIDAE) دراسات بيولوجية وهستوباثولوجية على تأثير بعض المستخلصات النباتيةعلى دودة ورق القطن الكبرى (سبودوبتر التيوراليس ) |
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Subject |
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BIOLOGICAL AND HISTOPATHOLOGICAL STUDIES ON THE EFFECTS OF SOME BOTANICAL EXTRACTS ON THE COTTON LEAFWORM SPODOPTERA LITTORALIS (BOISD.) (LEPIDOPTERA : NOCTUIDAE) |
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Document Language |
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Arabic |
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Abstract |
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1. Spodoptera littoralis (Boisd.) (Lepidoptera, Noctuidae) considered as one of the most agricultural pests and wildly spread in the middle east region, this pest it is the most damaged to numerous types of the agricultural cropes.
2. There is more than one plant that used in the study and produced high effectiveness and clear toxicity against S. littoralis (Boisd) these plants are Allium sativum , Thymus vulgaris and Abrus precatorius disolved in (acetone , ethanolic and petroleum ether)
3. The toxicological studies showed existence of clear homogeneity in obtained results, where there was an increase in toxicity rates with increased concentrations for all plant extracts on some biological aspects such as larval weight, larval mortality, pupation, pupal weight, adult emergence, sex ratio, fecundity, fertility, and longevity
4. Our results clearly indicated certain morphological changes (malformations) , it was found that all these effects occur under all the used dosages for all developmental stages (larvae- pupae and adults) , the intermediate stages also had been showed, (larva - pupae and pupae - adult).
5. The histological examination assured that the tested extracts induced several histopathological symptoms in the treated larvae such as degeneration in the muscle layers, disorganization in the epithelial cells, absence of nuclei, vacuolizations, separation of peritrophic membrane as well as detachment of the basement membrane of the mid- gut, Also fat body shows sever changes like shrinkage, damage and vacuolization .As well as ovaries and testis showed histopathological changes such as shrinkage of oocytes , degeneration of the follicular epithelium , vacuolization and histruction of nurse cells , histruction in the different stages of spermatogensis, vacuolization as well as degeneration in the epithelial sheath and testicular follicles was also observed. |
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Supervisor |
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Prof.Dr. Faten Farid Abul dahab |
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Thesis Type |
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Doctorate Thesis |
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Publishing Year |
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1429 AH
2008 AD |
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Added Date |
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Wednesday, June 3, 2009 |
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Researchers
| حنان أبو القاسم بصلي | Bosly, Hanan Abo AlKasem | Researcher | Doctorate | |
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