Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Pattern discrimination by the honeybee (Apis mellifera) is colour blind for radial tangential cues
Autore:
Horridge, GA;
Indirizzi:
Australian Natl Univ, Res Sch Biol Sci, Ctr Visual Sci, Canberra, ACT 2601, Australia Australian Natl Univ Canberra ACT Australia 2601 rra, ACT 2601, Australia
Titolo Testata:
JOURNAL OF COMPARATIVE PHYSIOLOGY A-SENSORY NEURAL AND BEHAVIORAL PHYSIOLOGY
fascicolo: 4, volume: 184, anno: 1999,
pagine: 413 - 422
SICI:
0340-7594(199904)184:4<413:PDBTH(>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
FLOWER-LIKE PATTERNS; SPECTRAL SENSITIVITY; CHROMATIC PROPERTIES; VISION; ORIENTATION; EYE; RECOGNITION; CELLS; SHAPE; BEES;
Keywords:
honeybee vision; radial tangential cues; colour-blind; Apis mellifera;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Horridge, GA Australian Natl Univ, Res Sch Biol Sci, Ctr Visual Sci, POB 475, Canberra,ACT 2601, Australia Australian Natl Univ POB 475 Canberra ACT Australia 2601 alia
Citazione:
G.A. Horridge, "Pattern discrimination by the honeybee (Apis mellifera) is colour blind for radial tangential cues", J COMP PH A, 184(4), 1999, pp. 413-422

Abstract

Bees were trained to discriminate between two patterns, one of which was associated with a reward, in a Y-choice apparatus with the targets presentedvertically at a distance at an angular subtense of 50 degrees. Previous work with this apparatus has found discrimination between two patterns of coloured gratings or radial sectors that are fixed in different orientations during the training. When there was contrast to the blue receptors alone, gratings of period 6 degrees were resolved, and 4 degrees when there was contrast to the green receptors. In the present work, bees discriminate betweena pattern containing tangentially arranged edges and one containing radially arranged edges, both with no average edge orientation. The targets were rotated every 5 min to make the locations of areas useless as cues. The edges remained consistently radial or tangential and were therefore the only cues. Tests with patterns of selected colours and various levels of grey show that for each colour there is a level of grey at which discrimination fails. Discrimination is therefore colour-blind. The same patterns were made with combinations of coloured papers that give no contrast to the green receptors or alternatively to the blue receptors. The bees discriminate only ifthe edges between colours present a contrast to the green receptors. The system that discriminates generalized radial and tangential cues is therefore colour blind because the inputs are restricted to the green receptors, not because receptor outputs are added together. The same result was obtainedwith a very coarse pattern of period 20 degrees.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/07/20 alle ore 22:14:44