| 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 | 1999 | 1998 | 1997 | 1996 | 1995 | Wittlinger, M., Wolf, H., Wehner, R.: (2007):  id 35 Hair plate mechanoreceptors associated with body segments are not necessary for three-dimensional path integration in desert ants, Cataglyphis fortis J Exp Biol, 210, 375-382 | ABSTRACT | | ZORA | Nørgaard, T., Henschel, J.R., Wehner, R. (2007):  id 36 Use of local cues in the night-time navigation of the wandering desert spider Leucorchestris arenicola (Araneae, Sparassidae) J Comp Physiol A (2007) 193:217–222 | ABSTRACT | | ZORA | Narendra A., Cheng K., Wehner R.: (2007):  id 37 Acquiring, retaining and integrating memories of the outbound distance in the Australian desert ant Melophorus bagoti The Journal of Experimental Biology 210, 570-577 | ABSTRACT | | ZORA | Wehner, R.,Fukushi, T.,Isler, K.: (2007):  id 38 On Being Small: Brain Allometry in Ants Brain Behav Evol 2007;69:220-228 | ZORA | Grah, G., Wehner, R. and Ronacher, B. (2007):  id 88 Desert ants do not acquire and use a three-dimensional vector. Frontiers in Zoology 2007, 4:12-39 | ABSTRACT | | ZORA | Hegedüs, R., Åkesson, S., Wehner, R. and Horvath, G. (2007):  id 89 Could Vikings have navigated under foggy and cloudy conditions by skylight polarization? On the atmospheric optical prerequisites of polarimetric Viking navigation under foggy and cloudy skies. Proc. R. Soc. A (2007) 463, 1081–1095 | ABSTRACT | | ZORA | Müller, M. and Wehner, R. (2007):  id 90 Wind and sky as compass cues in desert ant navigation Naturwissenschaften (2007) 94, 589-594 | ABSTRACT | | ZORA | Wehner, R. (2007):  id 91 The desert ant's navigational toolkit: procedural rather than positional knowledge. Proceedings of the 63rd Annual Meeting of the Institute of Navigation 2007:1-14, April 23 - 25, Cambridge, Massachusetts | ABSTRACT | ZORA | Wittlinger, M., Wehner, R. and Wolf, H. (2007):  id 92 The desert ant odometer: a stride integrator that accounts for stride length and walking speed. J. Exp. Biol. (2007) 210, 198-207 | ABSTRACT | | ZORA | Abstract: Desert ants, Cataglyphis, use path integration as a major means of navigation. Path integration requires measurement of two parameters, namely, direction and distance of travel. Directional information is provided by a celestial compass, whereas distance measurement is accomplished by a stride integrator, or pedometer. Here we examine the recently demonstrated pedometer function in more detail. By manipulating leg lengths in foraging desert ants we could also change their stride lengths. Ants with elongated legs (‘stilts’) or shortened legs (‘stumps’) take larger or shorter strides, respectively, and misgauge travel distance. Travel distance is overestimated by experimental animals walking on stilts, and underestimated by animals walking on stumps – strongly indicative of stride integrator function in distance measurement. High-speed video analysis was used to examine the actual changes in stride length, stride frequency and walking speed caused by the manipulations of leg length. Unexpectedly, quantitative characteristics of walking behaviour remained almost unaffected by imposed changes in leg length, demonstrating remarkable robustness of leg coordination and walking performance. These data further allowed normalisation of homing distances displayed by manipulated animals with regard to scaling and speed effects. The predicted changes in homing distance are in quantitative agreement with the experimental data, further supporting the pedometer hypothesis. __________ imls/literature