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Juvenile-hormone-mediated plasticity of aggregation behaviour and olfactory processing in adult desert locusts

Ignell, Rickard LU ; Couillaud, F and Anton, Sylvia LU (2001) In Journal of Experimental Biology 204(2). p.249-259
Abstract
In desert locusts Schistocerca gregaria, aggregation behaviour is elicited by aggregation pheromones. In this study, we show that the behavioural response to the major and most potent adult aggregation pheromone component, phenylacetonitrile, is age- and juvenile-hormone-dependent. Furthermore, we show that juvenile hormone influences the responsiveness of olfactory interneurons in the antennal lobe to aggregation pheromone, whereas the responsiveness of antennal receptor neurons is not changed. Old locusts and locusts injected with juvenile hormone, in contrast to young locusts and locusts deprived of juvenile hormone through allatectomy, i.e. after surgical removal of the gland producing this hormone, do not display any aggregation... (More)
In desert locusts Schistocerca gregaria, aggregation behaviour is elicited by aggregation pheromones. In this study, we show that the behavioural response to the major and most potent adult aggregation pheromone component, phenylacetonitrile, is age- and juvenile-hormone-dependent. Furthermore, we show that juvenile hormone influences the responsiveness of olfactory interneurons in the antennal lobe to aggregation pheromone, whereas the responsiveness of antennal receptor neurons is not changed. Old locusts and locusts injected with juvenile hormone, in contrast to young locusts and locusts deprived of juvenile hormone through allatectomy, i.e. after surgical removal of the gland producing this hormone, do not display any aggregation behaviour, as indicated by long-term behavioural observations. The lack of positive olfactory-guided behaviour coincides with an impairment of the central olfactory system, which displays a lower number of neurons responding to aggregation pheromone. Indirect and direct actions of juvenile hormone at different levels of the central nervous system may thus contribute to the regulation and modulation of behavioural responsiveness in the locust. (Less)
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published
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in
Journal of Experimental Biology
volume
204
issue
2
pages
249 - 259
publisher
The Company of Biologists Ltd
external identifiers
  • scopus:0035141104
ISSN
1477-9145
language
English
LU publication?
yes
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The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Ecology/Ecotoxicology (Closed 2011) (011006020), Department of Ecology (Closed 2011) (011006010)
id
e0294b6a-5cd9-4366-add5-6cf9a15e4afd (old id 149682)
alternative location
http://jeb.biologists.org/cgi/reprint/204/2/249
date added to LUP
2016-04-01 11:54:13
date last changed
2020-10-27 04:15:01
@article{e0294b6a-5cd9-4366-add5-6cf9a15e4afd,
  abstract     = {In desert locusts Schistocerca gregaria, aggregation behaviour is elicited by aggregation pheromones. In this study, we show that the behavioural response to the major and most potent adult aggregation pheromone component, phenylacetonitrile, is age- and juvenile-hormone-dependent. Furthermore, we show that juvenile hormone influences the responsiveness of olfactory interneurons in the antennal lobe to aggregation pheromone, whereas the responsiveness of antennal receptor neurons is not changed. Old locusts and locusts injected with juvenile hormone, in contrast to young locusts and locusts deprived of juvenile hormone through allatectomy, i.e. after surgical removal of the gland producing this hormone, do not display any aggregation behaviour, as indicated by long-term behavioural observations. The lack of positive olfactory-guided behaviour coincides with an impairment of the central olfactory system, which displays a lower number of neurons responding to aggregation pheromone. Indirect and direct actions of juvenile hormone at different levels of the central nervous system may thus contribute to the regulation and modulation of behavioural responsiveness in the locust.},
  author       = {Ignell, Rickard and Couillaud, F and Anton, Sylvia},
  issn         = {1477-9145},
  language     = {eng},
  number       = {2},
  pages        = {249--259},
  publisher    = {The Company of Biologists Ltd},
  series       = {Journal of Experimental Biology},
  title        = {Juvenile-hormone-mediated plasticity of aggregation behaviour and olfactory processing in adult desert locusts},
  url          = {http://jeb.biologists.org/cgi/reprint/204/2/249},
  volume       = {204},
  year         = {2001},
}