ISSN:
1420-9098
Keywords:
Nocturnal orientation
;
canopy orientation
;
structural guidelines
;
Camponotus pennsyhanicus
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Summary The black carpenter antCamponotus pennsylvanicus (DeGeer), a predominantly nocturnal Formicine ant, responds to a hierarchy of visual and tactile cues when orienting along odor trails at night. Under illumination from moonlight or artificial light, workers rely upon these beacons to mediate phototactic orientation. In the absence of moonlight or artificial lights, ants were able to orient visually to terrestrial landmarks. In the absence of all landmarks, save for overhanging tree branches, ants could negotiate shortcuts or make directional changes in response to visual landmarks presented within the tree canopy on a moonless night. When experimental manipulations placed the ants in total darkness, they could no longer negotiate shortcuts and would resort to thigmotactic orientation along structural guidelines to reach a food source. The hierachical organization of these diverse cues in a foraging strategy is discussed, as well as their adaptive significance toC. pennsyhanicus.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01338835
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