SUMMARY: Primary and secondary form variants of isolated from 21 strains (13 species) of Steinernematidae and Heterorhabditidae were tested for 240 biochemical and physiological characters. Primary form variants, isolated from the infective stage nematodes, could always be distinguished from the secondary by adsorption of neutral red from MacConkey agar. Lecithinase, antibiotic activity and/or adsorption of bromothymol blue were useful for distinguishing the variants of most strains. The variants of all strains also differed for other characteristics but the distinguishing characteristics varied from strain to strain. The importance of including both variants of each strain and of using appropriate methods in the study of taxonomy was demonstrated.


Article metrics loading...

Loading full text...

Full text loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error