Movement and locomotion of Tylenchorhynchus brassicae Siddiqi, 1961 on water agar medium

Undulatory or serpentine movement was observed in Tylenchorhynchus brassicae. No track formation was observed on 0.5% water agar medium. However, on 1.0% water agar, nematodes left sinusoidal track. At 3.0%, nature of track was erratic crest and trough and almost a linear pattern on 5.0%. There was also a corresponding increase in the number of waves per body length of the nematode, but the rate of movement (speed = μm/sec.) of both sexes and larvae decreased in higher concentrations of agar medium.