How bees detect coloured targets using different regions of their compound eyes
Honeybees Apis mellifera detect coloured targets presented to the frontal region of their compound eyes using their colour vision system at larger visual angles (α > 15°), and an achromatic visual system based on the long-wave photoreceptor type at smaller visual angles (5°< α < 15°). Here...
| Autores principales: | , |
|---|---|
| Publicado: |
1999
|
| Materias: | |
| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03407594_v185_n6_p591_Giurfa http://hdl.handle.net/20.500.12110/paper_03407594_v185_n6_p591_Giurfa |
| Aporte de: |
| id |
paper:paper_03407594_v185_n6_p591_Giurfa |
|---|---|
| record_format |
dspace |
| spelling |
paper:paper_03407594_v185_n6_p591_Giurfa2023-06-08T15:34:15Z How bees detect coloured targets using different regions of their compound eyes Giurfa, Martín Zaccardi, Guillermo H. Compound eye Detection Honeybee Regionalisation Vision Honeybees Apis mellifera detect coloured targets presented to the frontal region of their compound eyes using their colour vision system at larger visual angles (α > 15°), and an achromatic visual system based on the long-wave photoreceptor type at smaller visual angles (5°< α < 15°). Here we examine the capability of the dorsal, ventral and frontal regions of the eye for colour detection. The minimum visual angle α(min) at which the bees detect a stimulus providing both chromatic contrast and receptor-specific contrast to the three receptor types varies for the different regions of the eye: 7.1 ± 0.5°for the ventral region, 8.2 ± 0.6° for the dorsal region and 4.0 ± 0.5°for the frontal region. Flight trajectories show that when the target was presented in the horizontal plane, bees used only the ventral region of their eyes to make their choices. When the targets appeared dorsally, bees used the frontodorsal region. This finding suggests that pure dorsal detection of coloured targets is difficult in this context. Furthermore, α(min) in the ventral plane depends on receptor-specific contrasts. The absence of S-receptor contrast does not affect the performance (α(min) = 5.9 ± 0.5°), whilst the absence of M- and L-receptor contrast significantly impairs the detection task. Minimal visual angles of 10.3 ± 0.9°and 17.6 ± 3°, respectively, are obtained in these cases. Thus, as for many visual tasks, the compound eye of the honeybee shows a regionalisation of colour detection that might be related to peripheral or central specialisations. Fil:Giurfa, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Zaccardi, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1999 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03407594_v185_n6_p591_Giurfa http://hdl.handle.net/20.500.12110/paper_03407594_v185_n6_p591_Giurfa |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Compound eye Detection Honeybee Regionalisation Vision |
| spellingShingle |
Compound eye Detection Honeybee Regionalisation Vision Giurfa, Martín Zaccardi, Guillermo H. How bees detect coloured targets using different regions of their compound eyes |
| topic_facet |
Compound eye Detection Honeybee Regionalisation Vision |
| description |
Honeybees Apis mellifera detect coloured targets presented to the frontal region of their compound eyes using their colour vision system at larger visual angles (α > 15°), and an achromatic visual system based on the long-wave photoreceptor type at smaller visual angles (5°< α < 15°). Here we examine the capability of the dorsal, ventral and frontal regions of the eye for colour detection. The minimum visual angle α(min) at which the bees detect a stimulus providing both chromatic contrast and receptor-specific contrast to the three receptor types varies for the different regions of the eye: 7.1 ± 0.5°for the ventral region, 8.2 ± 0.6° for the dorsal region and 4.0 ± 0.5°for the frontal region. Flight trajectories show that when the target was presented in the horizontal plane, bees used only the ventral region of their eyes to make their choices. When the targets appeared dorsally, bees used the frontodorsal region. This finding suggests that pure dorsal detection of coloured targets is difficult in this context. Furthermore, α(min) in the ventral plane depends on receptor-specific contrasts. The absence of S-receptor contrast does not affect the performance (α(min) = 5.9 ± 0.5°), whilst the absence of M- and L-receptor contrast significantly impairs the detection task. Minimal visual angles of 10.3 ± 0.9°and 17.6 ± 3°, respectively, are obtained in these cases. Thus, as for many visual tasks, the compound eye of the honeybee shows a regionalisation of colour detection that might be related to peripheral or central specialisations. |
| author |
Giurfa, Martín Zaccardi, Guillermo H. |
| author_facet |
Giurfa, Martín Zaccardi, Guillermo H. |
| author_sort |
Giurfa, Martín |
| title |
How bees detect coloured targets using different regions of their compound eyes |
| title_short |
How bees detect coloured targets using different regions of their compound eyes |
| title_full |
How bees detect coloured targets using different regions of their compound eyes |
| title_fullStr |
How bees detect coloured targets using different regions of their compound eyes |
| title_full_unstemmed |
How bees detect coloured targets using different regions of their compound eyes |
| title_sort |
how bees detect coloured targets using different regions of their compound eyes |
| publishDate |
1999 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03407594_v185_n6_p591_Giurfa http://hdl.handle.net/20.500.12110/paper_03407594_v185_n6_p591_Giurfa |
| work_keys_str_mv |
AT giurfamartin howbeesdetectcolouredtargetsusingdifferentregionsoftheircompoundeyes AT zaccardiguillermoh howbeesdetectcolouredtargetsusingdifferentregionsoftheircompoundeyes |
| _version_ |
1768546210920005632 |