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Laddawan Insung. Biological studies of diamondback moth, plutella xylostella linnaeus, its larval parasite, cotesia plutellae kurdjumov and the insecticides toxicity to larval parasite. Master's Degree(Entomology). มหาวิทยาลัยเกษตรศาสตร์. : มหาวิทยาลัยเกษตรศาสตร์, 2001.
Biological studies of diamondback moth, plutella xylostella linnaeus, its larval parasite, cotesia plutellae kurdjumov and the insecticides toxicity to larval parasite
Name: Laddawan Insung
Abstract:
The biology of diamondback moth, Plutella xylostella L., and its larval parasite, Cotesia plutellae Kurdjumov was studied in the laboratory at the temperature of 15, 20, 25 and 30 deg C as well as toxicity of some insecticides to this parasite ws also performed. In DBM, the development periods form egg to emergence of adult were 39.6, 23.8, 17.4 and 14.5 days, respectively. The highest fecundity was 245.8 eggs / female at 20 deg C, whereas the lowest fecundity was 107.9 eggs / female at 15 deg C. In C. plutellae, the developmental periods were 39.4, 26.1, 16.8 and 13.1 days, respectively. C. plutellae reared at 25 deg C had both the highest values of adult emergence and fecundity (obtained form its cocoon numbers) which were 72.1% and 106 cocoon 2 female, respectively.Toxicity of five recommended insecticides; fipronil, chlorpenapyr, abamectin, diafenthiuron and cypermethrin for controlling DBM was evaluated against adult and pupa stages of C. plutellae. It was found that fipronil, chlorpenapyr and diafenthiuron were remarkably harmful toxic to adult of C. plutellae, caused > 99% mortality. Abamectin was moderately harmful toxic, caused 80-99% mortality. All insecticides tested were observed harmless to pupae of C. plutellae, The effect of insecticides on parasitization of C. plutellae emerging form treated cocoon was also examed. The obtained results showed that cypermethrin appeared to be the lowest effect to C. plutellae which could express as % reduction in parasitization of 27.6%. The obtained results were provided more information regarding insecticides selectivety of the parasite for integrated management of DBM and judicious use of insecticides on environment conservation.
มหาวิทยาลัยเกษตรศาสตร์
Address:
กรุงเทพมหานคร (Bangkok)
Name: Ouab Sarnthoy
Role:
, Thesis Advisor
Created:
2001
Issued:
2548-09-16
Modified:
2548-09-16
วิทยานิพนธ์/Thesis
URL: http://www.lib.ku.ac.th/KUthesis/LaddawanIns/index.html
ISBN:
974-462-009-9
CallNumber:
SB945.D5 .L34
eng
DegreeName: Master of Science
Level: Master's Degree
Descipline: Entomology
Grantor: มหาวิทยาลัยเกษตรศาสตร์
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ใช้เวลา
0.045725 วินาที
Laddawan Insung
| Title | Contributor | Type |
|---|---|---|
| Biological studies of diamondback moth, plutella xylostella linnaeus, its larval parasite, cotesia plutellae kurdjumov and the insecticides toxicity to larval parasite
มหาวิทยาลัยเกษตรศาสตร์ Laddawan Insung | Ouab Sarnthoy | วิทยานิพนธ์/Thesis |
Ouab Sarnthoy