Table 1.

Summary of the effects of He-LWamide II and Hydra-RFamide I on migration of H. echinata

[He-LWamide II] (mol l-1) [Hydra-RFamide I] (mol l-1)
Parameters of migrationDimension0 (Control)10-810-70 (Control)10-7
Track length (observed)mm h-14.6 (1)10.2 (2.2)8.8 (1.9)5.1 (1)2.3 (0.5)
Number of active periods (N)h-11.8 (1)1.8 (1)1.7 (0.9)1.7 (1)1.1 (0.6)
Length of active periods (L)min8.0 (1)15.3 (1.9)14.5 (1.8)8.7 (1)6.6 (0.8)
Speed of migration during active periods (S)mm min-10.32 (1)0.41 (1.3)0.38 (1.2)0.33 (1)0.31 (0.9)
Track length (calculated as N×L×S)mm h-14.6 (1)11.3 (2.5)9.4 (2.0)4.9 (1)2.3 (0.5)
  • The numbers in parentheses show ratios relative to the control values at 0 mol l-1 set at 1.