Characteristics and virulence of two populations of Philippine Entomophathogenic nematodes against select Lepidopterous pests

Issue Date

10-2014

Abstract

Six Steinernema and one Heterorhabditis nematode populations were isolated from different agroecosystems across the Philippines using Asian corn borer, Ostrinia furnacalis Guenee, larvae as bait. Highest O. furnacalis mortality rates were observed for MBLB and PBCB populations after 24 hours of exposure to 200 infective juveniles (IJs) during the preliminary pathogenecity assays. The morphology and morphometric characters of IJs and males of the two populations showed strong resemblance with S. abbasi and H. indica, respectively. Additionally, their nucleotide sequences for the ITSI-5, 8S-ITSI regions were 99% and 100% similar to these species, respectively. Penetration rate, LC50 and LT50 values in selected lepidopterous pests were also determined to further assess the virulence of these entomopathogenic nematodes.

Source or Periodical Title

The Philippine Entomologist

ISSN

0048-3753

Volume

28

Issue

2

Page

202-203

Document Type

Article

Frequency

semi-annually

Language

English

En – AGROVOC descriptors

OSTRINIA FURNACALIS; HETERORHABDITIS; STEINERMA; ENTOMOPHILIC NEMATODES; PESTS OF PLANTS; PATHOGENICITY; PHILIPPINES

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