title: Wave Forms of Caenorhabditis elegans in a Chemical Attractant and Repellent and in Thermal Gradients.
abstract: The wave forms and activity patterns of Caenorhabditis elegans were examined on agar in the presence of known chemical attractants (NaCl) and repellents (D-tryptophan), and in thermal gradients. Total activity was reduced in both attractants and repellents. Different combinations of transfers between chemicals were investigated. Two thresholds were found for NaCl: 10(-3) M NaC1 caused reduced activity; 10 M NaCl increased reversals. D- or L-tryptophan influenced neither orientation nor the ability of thermally acclimatized individuals to remain at their eccritic temperature.
authors.forename: T A
authors.initials: TA
authors.lastname: Rutherford
authors.forename: N A
authors.initials: NA
authors.lastname: Croll