Artificial light and sun compass orientation in the sandhopper Talitrus saltator (Crustacea, Amphipoda)

1997 ◽  
Vol 182 (1) ◽  
pp. 43-50 ◽  
Author(s):  
A. Ugolini ◽  
B. Tiribilli ◽  
C. Castellini
Keyword(s):  
Artificial Light ◽  
Compass Orientation ◽  
Sun Compass ◽  
Talitrus Saltator

The role of the biological clock in the sun compass orientation of free-running individuals of Talitrus saltator

2005 ◽  
Vol 69 (4) ◽  
pp. 835-843 ◽  
Author(s):  
Felicita Scapini ◽  
Claudia Rossano ◽  
Giovanni M. Marchetti ◽  
Elfed Morgan
Keyword(s):  
Biological Clock ◽  
The Sun ◽  
Compass Orientation ◽  
Sun Compass ◽  
Talitrus Saltator ◽  
Free Running

Sun-compass orientation in the characidCheirodon pulcher

1992 ◽  
Vol 35 (3) ◽  
pp. 321-325 ◽  
Author(s):  
Luis E. Levin ◽  
Pedro Belmonte ◽  
Olga González
Keyword(s):  
Compass Orientation ◽  
Sun Compass

Sun-compass orientation in the mosquitofish, Gambusia affinis

1969 ◽  
Vol 17 (4) ◽  
pp. 636-640 ◽  
Author(s):  
C. Phillip Goodyear ◽  
Denzel E. Ferguson
Keyword(s):  
Gambusia Affinis ◽  
Compass Orientation ◽  
Sun Compass

scholarly journals Pigeons combine compass and landmark guidance in familiar route navigation

2007 ◽  
Vol 104 (18) ◽  
pp. 7471-7476 ◽  
Author(s):  
Dora Biro ◽  
Robin Freeman ◽  
Jessica Meade ◽  
Stephen Roberts ◽  
Tim Guilford
Keyword(s):  
Global Positioning System ◽  
Columba Livia ◽  
Homing Pigeon ◽  
Positioning System ◽  
Compass Orientation ◽  
Sun Compass ◽  
Global Positioning ◽  
Global Positioning System Tracking ◽  
Tracking Technology ◽  
Route Navigation

How do birds orient over familiar terrain? In the best studied avian species, the homing pigeon (Columba livia), two apparently independent primary mechanisms are currently debated: either memorized visual landmarks provide homeward guidance directly, or birds rely on a compass to home from familiar locations. Using miniature Global Positioning System tracking technology and clock-shift procedures, we set sun-compass and landmark information in conflict, showing that experienced birds can accurately complete their memorized routes by using landmarks alone. Nevertheless, we also find that route following is often consistently offset in the expected compass direction, faithfully reproducing the shape of the track, but in parallel. Thus, we demonstrate conditions under which compass orientation and landmark guidance must be combined into a system of simultaneous or oscillating dual control.

scholarly journals Stimulus-dependent orientation strategies in monarch butterflies

2021 ◽  
Author(s):  
Myriam Franzke ◽  
Christian Kraus ◽  
Maria Gayler ◽  
David Dreyer ◽  
Keram Pfeiffer ◽  
...  
Keyword(s):  
Visual Cues ◽  
Danaus Plexippus ◽  
Monarch Butterfly ◽  
Central Complex ◽  
Orientation Behavior ◽  
Compass Orientation ◽  
Monarch Butterflies ◽  
Sun Compass ◽  
Bright Stripe ◽  
Flight Route

Insects are well-known for their ability to keep track of their heading direction based on a combination of skylight cues and visual landmarks. This allows them to navigate back to their nest, disperse throughout unfamiliar environments, as well as migrate over large distances between their breeding and non-breeding habitats. The monarch butterfly (Danaus plexippus) for instance is known for its annual southward migration from North America to certain trees in Central Mexico. To maintain a constant flight route, these butterflies use a time-compensated sun compass for orientation which is processed in a region in the brain, termed the central complex. However, to successfully complete their journey, the butterflies' brain must generate a multitude of orientation strategies, allowing them to dynamically switch from sun-compass orientation to a tactic behavior toward a certain target. To study if monarch butterflies exhibit different orientation modes and if they can switch between them, we observed the orientation behavior of tethered flying butterflies in a flight simulator while presenting different visual cues to them. We found that the butterflies' behavior depended on the presented visual stimulus. Thus, while a dark stripe was used for flight stabilization, a bright stripe was fixated by the butterflies in their frontal visual field. If we replaced a bright stripe by a simulated sun stimulus, the butterflies switched their orientation behavior and exhibited compass orientation. Taken together, our data show that monarch butterflies rely on and switch between different orientation modes, allowing them to adjust orientation to the actual behavioral demands of the animal.

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