First report of a heterorhabditid nematode in Surigao del Sur, Philippines

Issue Date

10-2017

Abstract

Surigao del Sur is one of the top tourist spots in the Philippines because of its breath-taking scenery and diverse flora and fauna. Recent soil sampling along the shore of Bretania, Municipality of San Agustin followed by soil baiting for an interesting group of microfaunal species revealed the presence of a population of entomopathogenic nematodes (EPNs) in the province. This group of nematodes has been holding a worldwide reputation as effective biological control agents against agriculturally important insect pests belonging to an array of insect orders. Characterization of this local population identified the isolate as Heterorhabditis indica Poinar et al. This was based on characteristics of infected Ostrinia furnacalis (Guenee) cadavers, general morphology of infective juveniles, females, and males, and molecular analyses of the ITS region of the nematode’s 28S rDNA gene. Their bacterial symbionts were also isolated, characterized, and identified as Photorhabdus luminescens (Thomas & Poinar) Boenare et al., based on the 16S rRNA. Bioefficacy assays are underway to determine their biological control potential.

Source or Periodical Title

The Philippine Entomologist

ISSN

0048-3753

Volume

31

Issue

2

Page

147-148

Document Type

Article

College

College of Agriculture and Food Science (CAFS)

Frequency

semi-annually

Language

English

En – AGROVOC descriptors

HETERORHABDITIS; ENTOMOPHILIC NEMATODES; OSTRINIA FURNACALIS; INSECTA; PESTS; BIOLOGICAL CONTROL AGENTS; BIOLOGICAL CONTROL; SOIL SAMPLING; PHILIPPINES

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