Laboratory evaluation of seven Pakistani strains of entomopathogenic nematode against stored grain insect pest Sitophilus oryzae L

Seven indigenous entomopathogenic nematodes viz., S. pakistanense Shahina, Anis, Reid & Maqbool (Ham 10 strain); S. asiaticum Anis, Shahina, Reid & Rowe (211 strain); S. abbasi Elawad, Ahmad & Reid (507 strain); S. siamkayai Stock, Somsook & Reid (157 strain); S. feltiae Filipjev (A0...

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Published inPakistan journal of nematology Vol. 28; no. 2; pp. 295 - 305
Main Authors Shahina, F. (Karachi Univ. (Pakistan). National Nematological Research Centre), Salma, J. (Karachi Univ. (Pakistan). National Nematological Research Centre)
Format Journal Article
LanguageEnglish
Published 01.07.2010
Subjects
ENTOMOPHILIC NEMATODES
HETERORHABDITIS
LABORATORY EXPERIMENTATION
PAKISTAN
RICE
SITOPHILUS ORYZAE
SPECIES
STEINERNEMA
STORED PRODUCTS PEST CONTROL
STORED PRODUCTS PESTS
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Summary:Seven indigenous entomopathogenic nematodes viz., S. pakistanense Shahina, Anis, Reid & Maqbool (Ham 10 strain); S. asiaticum Anis, Shahina, Reid & Rowe (211 strain); S. abbasi Elawad, Ahmad & Reid (507 strain); S. siamkayai Stock, Somsook & Reid (157 strain); S. feltiae Filipjev (A05 strains), H. bacteriophora Poinar (1743 strain) and H. indica Poinar, Karunakar & David (HAM-64 strain) were examined against adult and pupal stage of Sitophilus oryzae in laboratory bioassays. The activity of the strains was determined at their concentrations. Mortality of adult and pupal stage rice weevils was higher in the nematode treatments than in the control. LC50 values were 42-169 IJs/pupae and 55-370 IJs/adult S. oryzae. This study concludes that entomopathogenic nematodes have unique host seeking and reproductive strategies and have anatomical characteristics that encourage consideration of their application in storage structures.
Bibliography:H10
J11
CATPAK-70032
ISSN:0255-7576