Asymmetry in Nematode Movement Patterns and Its Possible Significance in Orientation

Abstract

An analysis of previously published and fresh data emphasises the possible significance of movement patterns in orientation and in sampling the environment by nematodes. A comparison is made of the asymmetry of lateral undulation in several nematodes and examples are given from P. redivivus which suggest that such asymmetries may be influenced by temperature and electrical currents. Vertical and horizontal movement patterns in P. redivivus are also related to orientation mechanisms.