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Title: Studies on the taxonomy and bionomics of some predscious spiders on insect pests of Rice Agroecosystem in Kuttanad, Kerala
Researcher: Sudhikumar, A V
Guide(s): Sebastian, P A
Keywords: insecticide toxicity
feeding potential
rice agroecosystem
Upload Date: 28-Feb-2013
University: Mahatma Gandhi University
Completed Date: 2007
Abstract: A study on the diversity of spider fauna in Kuttanad rice agroecosystems of Kerala was conducted during 2001-2004. Standard sweeping and hand picking methods were used for spider sampling from 8 sclected study sites. A total of 99 species of spiders belonging to 66 genera of 20 families were collected during the study. Spider population in the monsoon (Rabi) and winter (Kharif) seasons had a slight different species composition. There was significant difference in Shannon, Richness and Evenness indices between the two seasons. The collected spiders were classified into 7 feeding guilds and 5 vertical strata. Biological studies revealed that the number of instars and longevity period varied among the species and sexes of the same species. Laboratory experiments on feeding potential of the dominant spiders on major insect pests revealed that Pardosu pseudoannulata was the most efficient predator. Toxicological studies suggested the usefulness of Monocrotophos as a component of integrated pest management strategy for sustainable paddy cultivation. Of the three dominant species tested, P. pseudoannulatu was the least susceptible to the application of insecticides both by topical application and the dipping methods under laboratory conditions.
Pagination: 230p.
Appears in Departments:Department of Zoology

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01_title.pdfAttached File130.6 kBAdobe PDFView/Open
02_declaration.pdf41.55 kBAdobe PDFView/Open
03_certificate.pdf95.84 kBAdobe PDFView/Open
04_acknowledgements.pdf56.33 kBAdobe PDFView/Open
05_homage.pdf11.92 kBAdobe PDFView/Open
06_dedication.pdf10.35 kBAdobe PDFView/Open
07_abstract.pdf24.8 kBAdobe PDFView/Open
08_preface.pdf111.51 kBAdobe PDFView/Open
09_contents.pdf93.27 kBAdobe PDFView/Open
10_list of tables.pdf48.31 kBAdobe PDFView/Open
11_list of figures.pdf25.12 kBAdobe PDFView/Open
12_list of plates.pdf17.88 kBAdobe PDFView/Open
13_chapter 1.pdf2.42 MBAdobe PDFView/Open
14_chapter 2.pdf135.88 kBAdobe PDFView/Open
15_chapter 3.pdf227.6 kBAdobe PDFView/Open
16_chapter 4.pdf547.15 kBAdobe PDFView/Open
17_chapter 5.pdf383.07 kBAdobe PDFView/Open
18_chapter 6.pdf113.07 kBAdobe PDFView/Open
19_references.pdf900.67 kBAdobe PDFView/Open
20_index.pdf193.3 kBAdobe PDFView/Open

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