Representation of pheromones, interspecific signals, and plant odors in higher olfactory centers; mapping physiologically identified antennal-lobe projection neurons in the male heliothine moth
In the primary olfactory centre of the moth brain, for example, a few enlarged glomeruli situated dorsally, at the entrance of the antennal nerve, are devoted to information about female-produced substances whereas a set of more numerous ordinary glomeruli receives input about general odorants. Heli...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2014-10-01
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| Series: | Frontiers in Systems Neuroscience |
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| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fnsys.2014.00186/full |
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| author | Xin-Cheng eZhao Pål eKvello Bjarte eLøfaldl Siri eLillevold Hanna eMustaparta Bente Gunnveig eBerg |
| author_facet | Xin-Cheng eZhao Pål eKvello Bjarte eLøfaldl Siri eLillevold Hanna eMustaparta Bente Gunnveig eBerg |
| author_sort | Xin-Cheng eZhao |
| collection | DOAJ |
| description | In the primary olfactory centre of the moth brain, for example, a few enlarged glomeruli situated dorsally, at the entrance of the antennal nerve, are devoted to information about female-produced substances whereas a set of more numerous ordinary glomeruli receives input about general odorants. Heliothine moths are particularly suitable for studying central chemosensory mechanisms not only because of their anatomically separated systems for plant odours and pheromones but also due to their use of female-produced substances in communication across the species. Thus, the male-specific system of heliothine moths includes two sub arrangements, one ensuring attraction and mating behavior by carrying information about pheromones released by conspecifics, and the other reproductive isolation via signal information emitted from heterospecifics. Based on previous tracing experiments, a general chemotopic organization of the male-specific glomeruli has been demonstrated in a number of heliothine species. As compared to the well explored organization of the moth antennal lobe, demonstrating a non-overlapping representation of the biologically relevant stimuli, less is known about the neural arrangement residing at the following synaptic level, i.e. the mushroom body calyces and the lateral horn. In the study presented here, we have labelled physiologically characterized antennal-lobe projection neurons in males of the two heliothine species, Heliothis virescens and Helicoverpa assulta, for the purpose of mapping their target regions in the protocerebrum. In order to compare the representation of plant odours, pheromones, and interspecific signals in the higher brain regions of each species, we have created standard brain atlases and registered three-dimensional models of distinct uniglomerular projection neuron types into the relevant atlas. |
| first_indexed | 2024-12-21T02:30:25Z |
| format | Article |
| id | doaj.art-d7339f188450409fb4cf18d7b2b0c5a4 |
| institution | Directory Open Access Journal |
| issn | 1662-5137 |
| language | English |
| last_indexed | 2024-12-21T02:30:25Z |
| publishDate | 2014-10-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Systems Neuroscience |
| spelling | doaj.art-d7339f188450409fb4cf18d7b2b0c5a42022-12-21T19:18:57ZengFrontiers Media S.A.Frontiers in Systems Neuroscience1662-51372014-10-01810.3389/fnsys.2014.0018695970Representation of pheromones, interspecific signals, and plant odors in higher olfactory centers; mapping physiologically identified antennal-lobe projection neurons in the male heliothine mothXin-Cheng eZhao0Pål eKvello1Bjarte eLøfaldl2Siri eLillevold3Hanna eMustaparta4Bente Gunnveig eBerg5Norwegian University of Science and TechnologyNorwegian University of Science and Technology (NTNU)Norwegian University of Science and Technology (NTNU)Norwegian University of Science and TechnologyNorwegian University of Science and Technology (NTNU)Norwegian University of Science and TechnologyIn the primary olfactory centre of the moth brain, for example, a few enlarged glomeruli situated dorsally, at the entrance of the antennal nerve, are devoted to information about female-produced substances whereas a set of more numerous ordinary glomeruli receives input about general odorants. Heliothine moths are particularly suitable for studying central chemosensory mechanisms not only because of their anatomically separated systems for plant odours and pheromones but also due to their use of female-produced substances in communication across the species. Thus, the male-specific system of heliothine moths includes two sub arrangements, one ensuring attraction and mating behavior by carrying information about pheromones released by conspecifics, and the other reproductive isolation via signal information emitted from heterospecifics. Based on previous tracing experiments, a general chemotopic organization of the male-specific glomeruli has been demonstrated in a number of heliothine species. As compared to the well explored organization of the moth antennal lobe, demonstrating a non-overlapping representation of the biologically relevant stimuli, less is known about the neural arrangement residing at the following synaptic level, i.e. the mushroom body calyces and the lateral horn. In the study presented here, we have labelled physiologically characterized antennal-lobe projection neurons in males of the two heliothine species, Heliothis virescens and Helicoverpa assulta, for the purpose of mapping their target regions in the protocerebrum. In order to compare the representation of plant odours, pheromones, and interspecific signals in the higher brain regions of each species, we have created standard brain atlases and registered three-dimensional models of distinct uniglomerular projection neuron types into the relevant atlas.http://journal.frontiersin.org/Journal/10.3389/fnsys.2014.00186/fulllateral hornstandard brain atlasantennal-lobe projection neuronsantennal-lobe glomerulimacroglomerular compex (MGC) |
| spellingShingle | Xin-Cheng eZhao Pål eKvello Bjarte eLøfaldl Siri eLillevold Hanna eMustaparta Bente Gunnveig eBerg Representation of pheromones, interspecific signals, and plant odors in higher olfactory centers; mapping physiologically identified antennal-lobe projection neurons in the male heliothine moth Frontiers in Systems Neuroscience lateral horn standard brain atlas antennal-lobe projection neurons antennal-lobe glomeruli macroglomerular compex (MGC) |
| title | Representation of pheromones, interspecific signals, and plant odors in higher olfactory centers; mapping physiologically identified antennal-lobe projection neurons in the male heliothine moth |
| title_full | Representation of pheromones, interspecific signals, and plant odors in higher olfactory centers; mapping physiologically identified antennal-lobe projection neurons in the male heliothine moth |
| title_fullStr | Representation of pheromones, interspecific signals, and plant odors in higher olfactory centers; mapping physiologically identified antennal-lobe projection neurons in the male heliothine moth |
| title_full_unstemmed | Representation of pheromones, interspecific signals, and plant odors in higher olfactory centers; mapping physiologically identified antennal-lobe projection neurons in the male heliothine moth |
| title_short | Representation of pheromones, interspecific signals, and plant odors in higher olfactory centers; mapping physiologically identified antennal-lobe projection neurons in the male heliothine moth |
| title_sort | representation of pheromones interspecific signals and plant odors in higher olfactory centers mapping physiologically identified antennal lobe projection neurons in the male heliothine moth |
| topic | lateral horn standard brain atlas antennal-lobe projection neurons antennal-lobe glomeruli macroglomerular compex (MGC) |
| url | http://journal.frontiersin.org/Journal/10.3389/fnsys.2014.00186/full |
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