Plant Parasitic



Webmaster: Daniel Snyder

Last Edited: May 30, 2002


Genus Hopolaimus

Lance Nematode

Two important species:
- H. columbus (limited in distribution; economically
important on soybean and cotton is southern US
- H. galeatus (more widely distributed; wider host range
including cotton, wheat, pine, oak, grasses)

  • large nematode that can be very destructive
  • forms cavities in cortex by rupturing cells
  • all stages are infective
  • life cycle 45-49 days
  • prolific numbers detectable in infected plant tissue
  • forms cavities and necrotic lesions, but does not feed in the stele
  • feed as semiendoparasites with bodies sometimes outside root surface
  • usually do not infect in damaging numbers

University of Nebraska-Lincoln page for Lance Nematodes