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Related Experiment Video

Updated: Jul 6, 2026

Soil Sampling and Isolation of Entomopathogenic Nematodes (Steinernematidae, Heterorhabditidae)
07:45

Soil Sampling and Isolation of Entomopathogenic Nematodes (Steinernematidae, Heterorhabditidae)

Published on: July 11, 2014

Isolation and identification of entomopathogenic nematodes and their symbiotic bacteria from Hérault and Gard

Vanya Emelianoff1, Nathalie Le Brun, Sylvie Pagès

  • 1Département Génétique et Environnement, équipe Interactions, Institut des Sciences de l'évolution UMR CNRS 5554, Université de Montpellier II, Place Eugène Bataillon, 34000 Montpellier, France.

Journal of Invertebrate Pathology
|March 21, 2008
PubMed
Summary

This study identified native entomopathogenic nematodes (EPN) and their bacterial symbionts in Southern France. Findings include new EPN species crucial for biological pest control strategies.

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Published on: September 28, 2021

Area of Science:

  • Entomology
  • Microbiology
  • Nematology

Background:

  • Effective biological pest control relies on identifying native entomopathogenic nematodes (EPN) and their symbiotic bacteria.
  • No prior research has documented EPN and their symbionts in metropolitan France.

Purpose of the Study:

  • To survey and molecularly characterize EPN and their associated bacteria in the Hérault and Gard regions of Southern France.
  • To establish a baseline for native EPN populations for future pest management applications.

Main Methods:

  • Field surveys were conducted to isolate EPN and their symbiotic bacteria.
  • Molecular characterization, including phylogenetic analysis, was used to identify nematode species and bacterial symbionts.
  • DNA sequencing and analysis were employed for precise species and strain identification.

Main Results:

  • Three *Steinernema* species (*S. feltiae*, *S. affine*, and a new undescribed species) and one *Heterorhabditis* species (*H. bacteriophora*) were identified.
  • Bacterial symbionts *Xenorhabdus bovienii*, *Xenorhabdus kozodoii*, *Photorhabdus luminescens ssp. kayaii*, and *Photorhabdus luminescens ssp. laumondii* were associated with the identified nematodes.
  • The undescribed *Steinernema* sp. is phylogenetically close to *S. arenarium*, suggesting a new species within the 'glaseri-group'.

Conclusions:

  • This research provides the first molecular identification of EPN and their bacterial symbionts in metropolitan France.
  • The discovery of a new *Steinernema* species and distinct strains of *H. bacteriophora* offers valuable resources for developing targeted biological control programs.
  • Understanding native EPN diversity is essential for sustainable pest management and conservation efforts.