Faeces' odours attract gregarious locust hoppers
Collective motion is one of the most impressive common features of gregarious locusts: once formed, bands and swarms get moving for long distances. It was shown that visual perception of neighbours plays a key role in maintaining marching behaviour at a local scale. But at a larger scale, mechanisms underlying band cohesion are less understood. It was shown in several field studies that individuals separated from the band were able to get back to the group, even after being separated since a night. In this context, faeces' odours could be a possible indicator of the recent passage of a group. In this study, we tested if nymphs are attracted by faeces' odours and if this effect is modulated by the age of the faeces. To this end, we conducted individual olfactometric behavioural assays of instar hoppers of desert locust, Schistocerca gregaria, exposed to odours of 1 h-old and 24 h-old faeces. We also used Gas Chromatography-Mass Spectrometry (GC–MS) to identify odours' volatile organic compounds from faeces. The results of behavioural assays indicated a strong attractive effect of faeces, with no preference for one of the two faecal age classes. Nymphs spent significantly more time in the side of the olfactometer where the faeces' odours came from, and 72.7% of tested individuals chose this side first. We filtered and annotated 11 volatile organic compounds present in both fresh and old faeces in GC–MS analyses, including guaiacol and phenol, which are known to cause an aggregative effect on desert locusts. As the attractive effect lasted over 24 h, band's faeces could still have an attractive effect when individuals are separated from the band since one day. In this situation, latecomers individuals would be able to get back to the group by following the traces of their predecessors.
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Subjects: | L20 - Écologie animale, H10 - Ravageurs des plantes, Schistocerca gregaria, migration animale, comportement animal, propriété organoleptique, odeur, guaiacol, fèces, expérimentation en laboratoire, comportement grégaire, http://aims.fao.org/aos/agrovoc/c_31931, http://aims.fao.org/aos/agrovoc/c_32926, http://aims.fao.org/aos/agrovoc/c_8811, http://aims.fao.org/aos/agrovoc/c_5399, http://aims.fao.org/aos/agrovoc/c_14344, http://aims.fao.org/aos/agrovoc/c_11385, http://aims.fao.org/aos/agrovoc/c_2772, http://aims.fao.org/aos/agrovoc/c_15989, http://aims.fao.org/aos/agrovoc/c_df5a42b9, |
Online Access: | http://agritrop.cirad.fr/603749/ http://agritrop.cirad.fr/603749/1/PUB742.pdf |
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dig-cirad-fr-6037492024-01-29T19:03:25Z http://agritrop.cirad.fr/603749/ http://agritrop.cirad.fr/603749/ Faeces' odours attract gregarious locust hoppers. Vernier Camille, Barthès Nicolas, Chapuis Marie-Pierre, Foucaud Julien, Huguenin Joris, Leménager Nicolas, Piou Cyril. 2022. Journal of Insect Physiology, 143:104454, 10 p.https://doi.org/10.1016/j.jinsphys.2022.104454 <https://doi.org/10.1016/j.jinsphys.2022.104454> Faeces' odours attract gregarious locust hoppers Vernier, Camille Barthès, Nicolas Chapuis, Marie-Pierre Foucaud, Julien Huguenin, Joris Leménager, Nicolas Piou, Cyril eng 2022 Journal of Insect Physiology L20 - Écologie animale H10 - Ravageurs des plantes Schistocerca gregaria migration animale comportement animal propriété organoleptique odeur guaiacol fèces expérimentation en laboratoire comportement grégaire http://aims.fao.org/aos/agrovoc/c_31931 http://aims.fao.org/aos/agrovoc/c_32926 http://aims.fao.org/aos/agrovoc/c_8811 http://aims.fao.org/aos/agrovoc/c_5399 http://aims.fao.org/aos/agrovoc/c_14344 http://aims.fao.org/aos/agrovoc/c_11385 http://aims.fao.org/aos/agrovoc/c_2772 http://aims.fao.org/aos/agrovoc/c_15989 http://aims.fao.org/aos/agrovoc/c_df5a42b9 Collective motion is one of the most impressive common features of gregarious locusts: once formed, bands and swarms get moving for long distances. It was shown that visual perception of neighbours plays a key role in maintaining marching behaviour at a local scale. But at a larger scale, mechanisms underlying band cohesion are less understood. It was shown in several field studies that individuals separated from the band were able to get back to the group, even after being separated since a night. In this context, faeces' odours could be a possible indicator of the recent passage of a group. In this study, we tested if nymphs are attracted by faeces' odours and if this effect is modulated by the age of the faeces. To this end, we conducted individual olfactometric behavioural assays of instar hoppers of desert locust, Schistocerca gregaria, exposed to odours of 1 h-old and 24 h-old faeces. We also used Gas Chromatography-Mass Spectrometry (GC–MS) to identify odours' volatile organic compounds from faeces. The results of behavioural assays indicated a strong attractive effect of faeces, with no preference for one of the two faecal age classes. Nymphs spent significantly more time in the side of the olfactometer where the faeces' odours came from, and 72.7% of tested individuals chose this side first. We filtered and annotated 11 volatile organic compounds present in both fresh and old faeces in GC–MS analyses, including guaiacol and phenol, which are known to cause an aggregative effect on desert locusts. As the attractive effect lasted over 24 h, band's faeces could still have an attractive effect when individuals are separated from the band since one day. In this situation, latecomers individuals would be able to get back to the group by following the traces of their predecessors. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/603749/1/PUB742.pdf text Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1016/j.jinsphys.2022.104454 10.1016/j.jinsphys.2022.104454 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jinsphys.2022.104454 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1016/j.jinsphys.2022.104454 info:eu-repo/semantics/reference/purl/https://doi.org/10.18167/DVN1/D3OP8O info:eu-repo/grantAgreement///ANR-18-CE32-0010-01//(FRA) Etude de l'émergence du polyphénisme de phase et des risques associés/PEPPER |
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L20 - Écologie animale H10 - Ravageurs des plantes Schistocerca gregaria migration animale comportement animal propriété organoleptique odeur guaiacol fèces expérimentation en laboratoire comportement grégaire http://aims.fao.org/aos/agrovoc/c_31931 http://aims.fao.org/aos/agrovoc/c_32926 http://aims.fao.org/aos/agrovoc/c_8811 http://aims.fao.org/aos/agrovoc/c_5399 http://aims.fao.org/aos/agrovoc/c_14344 http://aims.fao.org/aos/agrovoc/c_11385 http://aims.fao.org/aos/agrovoc/c_2772 http://aims.fao.org/aos/agrovoc/c_15989 http://aims.fao.org/aos/agrovoc/c_df5a42b9 L20 - Écologie animale H10 - Ravageurs des plantes Schistocerca gregaria migration animale comportement animal propriété organoleptique odeur guaiacol fèces expérimentation en laboratoire comportement grégaire http://aims.fao.org/aos/agrovoc/c_31931 http://aims.fao.org/aos/agrovoc/c_32926 http://aims.fao.org/aos/agrovoc/c_8811 http://aims.fao.org/aos/agrovoc/c_5399 http://aims.fao.org/aos/agrovoc/c_14344 http://aims.fao.org/aos/agrovoc/c_11385 http://aims.fao.org/aos/agrovoc/c_2772 http://aims.fao.org/aos/agrovoc/c_15989 http://aims.fao.org/aos/agrovoc/c_df5a42b9 |
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L20 - Écologie animale H10 - Ravageurs des plantes Schistocerca gregaria migration animale comportement animal propriété organoleptique odeur guaiacol fèces expérimentation en laboratoire comportement grégaire http://aims.fao.org/aos/agrovoc/c_31931 http://aims.fao.org/aos/agrovoc/c_32926 http://aims.fao.org/aos/agrovoc/c_8811 http://aims.fao.org/aos/agrovoc/c_5399 http://aims.fao.org/aos/agrovoc/c_14344 http://aims.fao.org/aos/agrovoc/c_11385 http://aims.fao.org/aos/agrovoc/c_2772 http://aims.fao.org/aos/agrovoc/c_15989 http://aims.fao.org/aos/agrovoc/c_df5a42b9 L20 - Écologie animale H10 - Ravageurs des plantes Schistocerca gregaria migration animale comportement animal propriété organoleptique odeur guaiacol fèces expérimentation en laboratoire comportement grégaire http://aims.fao.org/aos/agrovoc/c_31931 http://aims.fao.org/aos/agrovoc/c_32926 http://aims.fao.org/aos/agrovoc/c_8811 http://aims.fao.org/aos/agrovoc/c_5399 http://aims.fao.org/aos/agrovoc/c_14344 http://aims.fao.org/aos/agrovoc/c_11385 http://aims.fao.org/aos/agrovoc/c_2772 http://aims.fao.org/aos/agrovoc/c_15989 http://aims.fao.org/aos/agrovoc/c_df5a42b9 Vernier, Camille Barthès, Nicolas Chapuis, Marie-Pierre Foucaud, Julien Huguenin, Joris Leménager, Nicolas Piou, Cyril Faeces' odours attract gregarious locust hoppers |
description |
Collective motion is one of the most impressive common features of gregarious locusts: once formed, bands and swarms get moving for long distances. It was shown that visual perception of neighbours plays a key role in maintaining marching behaviour at a local scale. But at a larger scale, mechanisms underlying band cohesion are less understood. It was shown in several field studies that individuals separated from the band were able to get back to the group, even after being separated since a night. In this context, faeces' odours could be a possible indicator of the recent passage of a group. In this study, we tested if nymphs are attracted by faeces' odours and if this effect is modulated by the age of the faeces. To this end, we conducted individual olfactometric behavioural assays of instar hoppers of desert locust, Schistocerca gregaria, exposed to odours of 1 h-old and 24 h-old faeces. We also used Gas Chromatography-Mass Spectrometry (GC–MS) to identify odours' volatile organic compounds from faeces. The results of behavioural assays indicated a strong attractive effect of faeces, with no preference for one of the two faecal age classes. Nymphs spent significantly more time in the side of the olfactometer where the faeces' odours came from, and 72.7% of tested individuals chose this side first. We filtered and annotated 11 volatile organic compounds present in both fresh and old faeces in GC–MS analyses, including guaiacol and phenol, which are known to cause an aggregative effect on desert locusts. As the attractive effect lasted over 24 h, band's faeces could still have an attractive effect when individuals are separated from the band since one day. In this situation, latecomers individuals would be able to get back to the group by following the traces of their predecessors. |
format |
article |
topic_facet |
L20 - Écologie animale H10 - Ravageurs des plantes Schistocerca gregaria migration animale comportement animal propriété organoleptique odeur guaiacol fèces expérimentation en laboratoire comportement grégaire http://aims.fao.org/aos/agrovoc/c_31931 http://aims.fao.org/aos/agrovoc/c_32926 http://aims.fao.org/aos/agrovoc/c_8811 http://aims.fao.org/aos/agrovoc/c_5399 http://aims.fao.org/aos/agrovoc/c_14344 http://aims.fao.org/aos/agrovoc/c_11385 http://aims.fao.org/aos/agrovoc/c_2772 http://aims.fao.org/aos/agrovoc/c_15989 http://aims.fao.org/aos/agrovoc/c_df5a42b9 |
author |
Vernier, Camille Barthès, Nicolas Chapuis, Marie-Pierre Foucaud, Julien Huguenin, Joris Leménager, Nicolas Piou, Cyril |
author_facet |
Vernier, Camille Barthès, Nicolas Chapuis, Marie-Pierre Foucaud, Julien Huguenin, Joris Leménager, Nicolas Piou, Cyril |
author_sort |
Vernier, Camille |
title |
Faeces' odours attract gregarious locust hoppers |
title_short |
Faeces' odours attract gregarious locust hoppers |
title_full |
Faeces' odours attract gregarious locust hoppers |
title_fullStr |
Faeces' odours attract gregarious locust hoppers |
title_full_unstemmed |
Faeces' odours attract gregarious locust hoppers |
title_sort |
faeces' odours attract gregarious locust hoppers |
url |
http://agritrop.cirad.fr/603749/ http://agritrop.cirad.fr/603749/1/PUB742.pdf |
work_keys_str_mv |
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_version_ |
1792500497937072128 |