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EnglishWe compared the morphology of the primary olfactory center, the antennal lobe (AL), in 2 homopteran insects, Hyalesthes obsoletus Signoret (Homoptera: Cixiidae) and Scaphoideus titanus Ball (Homoptera: Cicadomorpha). The comparison between the ALs of the 2 species is particularly interesting considering that, although both use volatile cues to locate their host plants, their feeding behavior differs considerably: specifically, H. obsoletus is a highly polyphagous species, whereas S. titanus is strictly monophagous (on grapevine). Our investigation of the AL structure using immunocytochemical staining and antennal backfills did not reveal any sexual dimorphism in either the size of the ALs or in the size of individual glomeruli for either species. Instead, the AL of H. obsoletus displayed numerous and well-delineated glomeruli (about 130 in both sexes) arranged in a multilayered structure, whereas the smaller AL of S. titanus contained fewer than 15 glomerular-like structures. This difference is likely to reflect the comparatively reduced olfactory abilities in S. titanus, probably as a consequence of the reduced number of volatiles coming from the single host plant. Instead, in H. obsoletus, the ability to distinguish among several host plants may require a more complex olfactory neuronal network
Rossi Stacconi, M.V.; Hansson, B.S.; Rybak, J.; Romani, R. (2014). Comparative neuroanatomy of the antennal lobes of 2 homopteran species. CHEMICAL SENSES, 39 (4): 283-294. doi: 10.1093/chemse/bjt114 handle: http://hdl.handle.net/10449/24038
| Citation: | Rossi Stacconi, M.V.; Hansson, B.S.; Rybak, J.; Romani, R. (2014). Comparative neuroanatomy of the antennal lobes of 2 homopteran species. CHEMICAL SENSES, 39 (4): 283-294. doi: 10.1093/chemse/bjt114 handle: http://hdl.handle.net/10449/24038 | |
| Internal authors: | ||
| Organization unit: | CRI [2011-01 - today]: DEPARTMENT OF SUSTAINABLE AGRO-ECOSYSTEMS AND BIORESOURCES | |
| Authors: | Rossi Stacconi, M.V.; Hansson, B.S.; Rybak, J.; Romani, R. | |
| Title: | Comparative neuroanatomy of the antennal lobes of 2 homopteran species | |
| Journal: | CHEMICAL SENSES | |
| Issue Date: | 2014 | |
| Scientific Disciplinary Area: | Settore AGR/11 - ENTOMOLOGIA GENERALE E APPLICATA | |
| Keywords ENG: | Antennal lobe confocal microscopy Glomeruli Olfaction Hyalesthes obsoletus Scaphoideus titanus | |
| Keywords ITA: | Lobo antennale Microscopia confocale Glomeruli Olfatto | |
| Language: | English | |
| IF: | With Impact Factor ISI | |
| Publication status: | Published | |
| Nature of content: | Articolo in rivista/Article | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1093/chemse/bjt114 | |
| Appears in Collections: | 01 - Journal article |
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