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Paralyzing Action from a Distance in an Arboreal African Ant Species
Due to their prowess in interspecific competition and ability to catch a wide range of arthropod prey (mostly termites with which they are engaged in an evolutionary arms race), ants are recognized as a good model for studying the chemicals involved in defensive and predatory behaviors. Ants' w...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2011
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3237465/ https://www.ncbi.nlm.nih.gov/pubmed/22194854 http://dx.doi.org/10.1371/journal.pone.0028571 |
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author | Rifflet, Aline Tene, Nathan Orivel, Jerome Treilhou, Michel Dejean, Alain Vetillard, Angelique |
author_facet | Rifflet, Aline Tene, Nathan Orivel, Jerome Treilhou, Michel Dejean, Alain Vetillard, Angelique |
author_sort | Rifflet, Aline |
collection | PubMed |
description | Due to their prowess in interspecific competition and ability to catch a wide range of arthropod prey (mostly termites with which they are engaged in an evolutionary arms race), ants are recognized as a good model for studying the chemicals involved in defensive and predatory behaviors. Ants' wide diversity of nesting habits and relationships with plants and prey types implies that these chemicals are also very diverse. Using the African myrmicine ant Crematogaster striatula as our focal species, we adopted a three-pronged research approach. We studied the aggressive and predatory behaviors of the ant workers, conducted bioassays on the effect of their Dufour gland contents on termites, and analyzed these contents. (1) The workers defend themselves or eliminate termites by orienting their abdominal tip toward the opponent, stinger protruded. The chemicals emitted, apparently volatile, trigger the recruitment of nestmates situated in the vicinity and act without the stinger having to come into direct contact with the opponent. Whereas alien ants competing with C. striatula for sugary food sources are repelled by this behavior and retreat further and further away, termites defend their nest whatever the danger. They face down C. striatula workers and end up by rolling onto their backs, their legs batting the air. (2) The bioassays showed that the toxicity of the Dufour gland contents acts in a time-dependent manner, leading to the irreversible paralysis, and, ultimately, death of the termites. (3) Gas chromatography-mass spectrometry analyses showed that the Dufour gland contains a mixture of mono- or polyunsaturated long-chain derivatives, bearing functional groups like oxo-alcohols or oxo-acetates. Electrospray ionization-mass spectrometry showed the presence of a molecule of 1584 Da that might be a large, acetylated alkaloid capable of splitting into smaller molecules that could be responsible for the final degree of venom toxicity. |
format | Online Article Text |
id | pubmed-3237465 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-32374652011-12-22 Paralyzing Action from a Distance in an Arboreal African Ant Species Rifflet, Aline Tene, Nathan Orivel, Jerome Treilhou, Michel Dejean, Alain Vetillard, Angelique PLoS One Research Article Due to their prowess in interspecific competition and ability to catch a wide range of arthropod prey (mostly termites with which they are engaged in an evolutionary arms race), ants are recognized as a good model for studying the chemicals involved in defensive and predatory behaviors. Ants' wide diversity of nesting habits and relationships with plants and prey types implies that these chemicals are also very diverse. Using the African myrmicine ant Crematogaster striatula as our focal species, we adopted a three-pronged research approach. We studied the aggressive and predatory behaviors of the ant workers, conducted bioassays on the effect of their Dufour gland contents on termites, and analyzed these contents. (1) The workers defend themselves or eliminate termites by orienting their abdominal tip toward the opponent, stinger protruded. The chemicals emitted, apparently volatile, trigger the recruitment of nestmates situated in the vicinity and act without the stinger having to come into direct contact with the opponent. Whereas alien ants competing with C. striatula for sugary food sources are repelled by this behavior and retreat further and further away, termites defend their nest whatever the danger. They face down C. striatula workers and end up by rolling onto their backs, their legs batting the air. (2) The bioassays showed that the toxicity of the Dufour gland contents acts in a time-dependent manner, leading to the irreversible paralysis, and, ultimately, death of the termites. (3) Gas chromatography-mass spectrometry analyses showed that the Dufour gland contains a mixture of mono- or polyunsaturated long-chain derivatives, bearing functional groups like oxo-alcohols or oxo-acetates. Electrospray ionization-mass spectrometry showed the presence of a molecule of 1584 Da that might be a large, acetylated alkaloid capable of splitting into smaller molecules that could be responsible for the final degree of venom toxicity. Public Library of Science 2011-12-14 /pmc/articles/PMC3237465/ /pubmed/22194854 http://dx.doi.org/10.1371/journal.pone.0028571 Text en Rifflet et al. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Rifflet, Aline Tene, Nathan Orivel, Jerome Treilhou, Michel Dejean, Alain Vetillard, Angelique Paralyzing Action from a Distance in an Arboreal African Ant Species |
title | Paralyzing Action from a Distance in an Arboreal African Ant Species |
title_full | Paralyzing Action from a Distance in an Arboreal African Ant Species |
title_fullStr | Paralyzing Action from a Distance in an Arboreal African Ant Species |
title_full_unstemmed | Paralyzing Action from a Distance in an Arboreal African Ant Species |
title_short | Paralyzing Action from a Distance in an Arboreal African Ant Species |
title_sort | paralyzing action from a distance in an arboreal african ant species |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3237465/ https://www.ncbi.nlm.nih.gov/pubmed/22194854 http://dx.doi.org/10.1371/journal.pone.0028571 |
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