Differential Coding of Fruit, Leaf, and Microbial Odours in the Brains of <i>Drosophila suzukii</i> and <i>Drosophila melanogaster</i>
<i>Drosophila suzukii</i> severely damages the production of berry and stone fruits in large parts of the world. Unlike <i>D. melanogaster</i>, which reproduces on overripe and fermenting fruits on the ground, <i>D. suzukii</i> prefers to lay its eggs in ripening...
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2025-01-01
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| author | Claire Dumenil Gülsüm Yildirim Albrecht Haase |
| author_facet | Claire Dumenil Gülsüm Yildirim Albrecht Haase |
| author_sort | Claire Dumenil |
| collection | DOAJ |
| description | <i>Drosophila suzukii</i> severely damages the production of berry and stone fruits in large parts of the world. Unlike <i>D. melanogaster</i>, which reproduces on overripe and fermenting fruits on the ground, <i>D. suzukii</i> prefers to lay its eggs in ripening fruits still on the plants. Flies locate fruit hosts by their odorant volatiles, which are detected and encoded by a highly specialised olfactory system before being translated into behaviour. The exact information-processing pathway is not yet fully understood, especially the evaluation of odour attractiveness. It is also unclear what differentiates the brains of <i>D. suzukii</i> and <i>D. melanogaster</i> to cause the crucial difference in host selection. We hypothesised that the basis for different behaviours is already formed at the level of the antennal lobe of <i>D. suzukii</i> and <i>D. melanogaster</i> by different neuronal responses to volatiles associated with ripe and fermenting fruit. We thus investigated by 3D in vivo two-photon calcium imaging how both species encoded odours from ripe fruits, leaves, fermented fruits, bacteria, and their mixtures in the antennal lobe. We then assessed their behavioural responses to mixtures of ripe and fermenting odours. The neural responses reflect species-dependent shifts in the odour code. In addition to this, morphological differences were also observed. However, this was not directly reflected in different behavioural responses to the odours tested. |
| format | Article |
| id | doaj-art-5072cefaa90d4d588067b175485a6edc |
| institution | Kabale University |
| issn | 2075-4450 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
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| series | Insects |
| spelling | doaj-art-5072cefaa90d4d588067b175485a6edc2025-01-24T13:35:50ZengMDPI AGInsects2075-44502025-01-011618410.3390/insects16010084Differential Coding of Fruit, Leaf, and Microbial Odours in the Brains of <i>Drosophila suzukii</i> and <i>Drosophila melanogaster</i>Claire Dumenil0Gülsüm Yildirim1Albrecht Haase2Centre for Mind/Brain Sciences (CIMeC), University of Trento, 38068 Rovereto, ItalyCentre for Mind/Brain Sciences (CIMeC), University of Trento, 38068 Rovereto, ItalyCentre for Mind/Brain Sciences (CIMeC), University of Trento, 38068 Rovereto, Italy<i>Drosophila suzukii</i> severely damages the production of berry and stone fruits in large parts of the world. Unlike <i>D. melanogaster</i>, which reproduces on overripe and fermenting fruits on the ground, <i>D. suzukii</i> prefers to lay its eggs in ripening fruits still on the plants. Flies locate fruit hosts by their odorant volatiles, which are detected and encoded by a highly specialised olfactory system before being translated into behaviour. The exact information-processing pathway is not yet fully understood, especially the evaluation of odour attractiveness. It is also unclear what differentiates the brains of <i>D. suzukii</i> and <i>D. melanogaster</i> to cause the crucial difference in host selection. We hypothesised that the basis for different behaviours is already formed at the level of the antennal lobe of <i>D. suzukii</i> and <i>D. melanogaster</i> by different neuronal responses to volatiles associated with ripe and fermenting fruit. We thus investigated by 3D in vivo two-photon calcium imaging how both species encoded odours from ripe fruits, leaves, fermented fruits, bacteria, and their mixtures in the antennal lobe. We then assessed their behavioural responses to mixtures of ripe and fermenting odours. The neural responses reflect species-dependent shifts in the odour code. In addition to this, morphological differences were also observed. However, this was not directly reflected in different behavioural responses to the odours tested.https://www.mdpi.com/2075-4450/16/1/84<i>Drosophila suzukii</i>olfactionantennal lobeodour codecalcium imagingpreference assay |
| spellingShingle | Claire Dumenil Gülsüm Yildirim Albrecht Haase Differential Coding of Fruit, Leaf, and Microbial Odours in the Brains of <i>Drosophila suzukii</i> and <i>Drosophila melanogaster</i> Insects <i>Drosophila suzukii</i> olfaction antennal lobe odour code calcium imaging preference assay |
| title | Differential Coding of Fruit, Leaf, and Microbial Odours in the Brains of <i>Drosophila suzukii</i> and <i>Drosophila melanogaster</i> |
| title_full | Differential Coding of Fruit, Leaf, and Microbial Odours in the Brains of <i>Drosophila suzukii</i> and <i>Drosophila melanogaster</i> |
| title_fullStr | Differential Coding of Fruit, Leaf, and Microbial Odours in the Brains of <i>Drosophila suzukii</i> and <i>Drosophila melanogaster</i> |
| title_full_unstemmed | Differential Coding of Fruit, Leaf, and Microbial Odours in the Brains of <i>Drosophila suzukii</i> and <i>Drosophila melanogaster</i> |
| title_short | Differential Coding of Fruit, Leaf, and Microbial Odours in the Brains of <i>Drosophila suzukii</i> and <i>Drosophila melanogaster</i> |
| title_sort | differential coding of fruit leaf and microbial odours in the brains of i drosophila suzukii i and i drosophila melanogaster i |
| topic | <i>Drosophila suzukii</i> olfaction antennal lobe odour code calcium imaging preference assay |
| url | https://www.mdpi.com/2075-4450/16/1/84 |
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