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  • Honeybees  (1)
  • Learning  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Visual landmarks and route following in desert ants (1992)
    Springer
    Journal of comparative physiology 170 (1992), S. 435-442 
    Details
    ISSN: 1432-1351
    Keywords: Ants ; Landmarks ; Learning ; Navigation ; Vision
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Little is known about the way in which animals far from home use familiar landmarks to guide their homeward path. Desert ants, Cataglyphis spp., which forage individually over long distances are beginning to provide some answers. We find that ants running 30 m from a feeding place to their nest memorise the visual characteristics of prominent landmarks which lie close to their path. Although remembered visual features are used for identifying a landmark and for deciding whether to go to its left or right, they are not responsible for the detailed steering of an ant's path. The form of the trajectory as an ant approaches and detours around a landmark seems to be controlled by the latter's immediate retinal size; the larger it is, the greater the ant's turning velocity away from the landmark.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00191460
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  • 2
    Electronic Resource
    Electronic Resource
    On the encoding of movement vectors by honeybees. Are distance and direction represented independently? (1996)
    Springer
    Journal of comparative physiology 179 (1996), S. 395-406 
    Details
    ISSN: 1432-1351
    Keywords: Honeybees ; Vector averaging ; Motor trajectories ; Path-integration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Honeybees flying repeatedly over the same trajectory link it to an associated visual stimulus such that on viewing the stimulus they perform a trajectory in the habitual direction. To test if trajectory length can also be linked to a visual stimulus, bees were trained to fly through a multi-comparmented maze. Bees flew through a multi-compartmented maze. In one compartment a short trajectory could be linked to a stripe pattern oriented at 45° to the horizontal. In another compartment a longer trajectory could be linked to 135° stripes. Bees made both associations: their trajectories were short when viewing 45° stripes and longer when viewing 135° stripes. 90° stripes evoked trajectories of intermediate length. To test if distance and direction are linked independently to stripe orientation, a bee's trajectory was linked to 135° stripes in one compartment and to 45° stripes in another. These trajectories were the same length but differed in their horizontal direction by 60° or by 120°. 90° stripes evoked trajectories of intermediate direction which were shorter than those elicited by either training pattern. Bees were also trained to generate one long and one short trajectory with directions 120° apart. The trajectories elicited by 90° stripes were then biased towards the direction of the long training vector. Length and direction are not treated separately. The rules for combining trajectories resemble those of vector averaging.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00194993
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    Paper (German National Licenses)
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