Green land and blue sea: a coloured landscape in the orientation of the sandhopper Talitrus saltator (Montagu) (Amphipoda, Talitridae)

Year: 2006

Authors: Ugolini A., Somigli S., Mercatelli L.

Autors Affiliation: Dipartimento di Biologia Animale e Genetica, Università di Firenze, Via Romana 17, 50125 Firenze, Italy; Istituto Nazionale di Ottica Applicata, Firenze, Italy

Abstract: The use of the landscape in the zonal recovery of Talitrus saltator (Montagu) was demonstrated in the past using natural and artificial landscapes. Here we evaluate the importance of colour in the landscape orientation of sandhoppers. Adult individuals of T. saltator were released in a Plexiglas bowl under the sun, with a view of an artificial landscape: a black cardboard strip or a pair of differently coloured filters, each occupying 180° of the horizon. Our results not only confirm the influence of the black and white artificial landscape-based compass cue on the zonal orientation of T. saltator, but also show that vision of a blue and green artificial landscape affects the direction of orientation; in fact, the orientation agreed with the directional indication of the landscape even when it contrasted with the sun compass indication. The same result was obtained with a blue-grey and green-grey landscape, but not with pairs of grey filters. Therefore, in the sandhoppers

Journal/Review: JOURNAL OF EXPERIMENTAL BIOLOGY

Volume: 209 (13)      Pages from: 2509  to: 2514

KeyWords: Colour; Landscape; Orientation; Amphipoda; Animals; Color; Color Perception; Cues; Orientation; Photic Stimulation, Amphipoda; Talitridae; Talitrus saltator
DOI: 10.1242/jeb.02300

Citations: 14
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