A behavioral mechanism underlying ecological divergence in the malaria mosquito Anopheles gambiae
Disruptive selection mediated by predation on aquatic immature stages has been proposed as a major force driving ecological divergence and fostering speciation between the M and S molecular forms of the African malaria mosquito, Anopheles gambiae. In the dry savannahs of West Africa where both molecular forms co-occur, the S form thrives in temporary pools filled with rainwater, whereas the M form preferentially breeds in permanent freshwater habitats where predator pressure is higher. Here, we explored the proximal mechanisms by which predation may contribute to habitat segregation between molecular forms using progeny of female mosquitoes captured in Burkina Faso. We show that the S form suffers higher predation rates than the M form when simultaneously exposed to the widespread predator, Anisops jaczewskii in an experimental arena. Furthermore, behavioral plasticity induced by exposure to the predator was observed in the M form, but not in the S form, and may partially explain its habitat use and ecological divergence from the S form. We discuss the role of adaptive phenotypic plasticity in allowing successful colonization of a new ecological niche by the M form and highlight further research areas that need to be addressed for a better understanding of the ultimate mechanisms underlying ecological speciation in this pest of major medical importance. Key words: adaptation, Anopheles gambiae, behavior, habitat divergence, mosquito, notonectidae, phenotypic plasticity, predation, speciation.
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Subjects: | L72 - Organismes nuisibles des animaux, L73 - Maladies des animaux, Anopheles gambiae, malaria, Notonectidae, prédateur, écologie animale, phénotype, habitat, interactions biologiques, adaptabilité, entomologie, http://aims.fao.org/aos/agrovoc/c_30508, http://aims.fao.org/aos/agrovoc/c_34312, http://aims.fao.org/aos/agrovoc/c_30682, http://aims.fao.org/aos/agrovoc/c_6163, http://aims.fao.org/aos/agrovoc/c_427, http://aims.fao.org/aos/agrovoc/c_5776, http://aims.fao.org/aos/agrovoc/c_3456, http://aims.fao.org/aos/agrovoc/c_49896, http://aims.fao.org/aos/agrovoc/c_35024, http://aims.fao.org/aos/agrovoc/c_2588, http://aims.fao.org/aos/agrovoc/c_8081, |
Online Access: | http://agritrop.cirad.fr/558056/ http://agritrop.cirad.fr/558056/1/document_558056.pdf |
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dig-cirad-fr-5580562024-01-28T18:51:17Z http://agritrop.cirad.fr/558056/ http://agritrop.cirad.fr/558056/ A behavioral mechanism underlying ecological divergence in the malaria mosquito Anopheles gambiae. Gimonneau Geoffrey, Bouyer Jérémy, Morand Serge, Besansky Nora J., Diabaté Abdoulaye, Simard Frédéric. 2010. Behavioral Ecology, 21 (5) : 1087-1092.https://doi.org/10.1093/beheco/arq114 <https://doi.org/10.1093/beheco/arq114> A behavioral mechanism underlying ecological divergence in the malaria mosquito Anopheles gambiae Gimonneau, Geoffrey Bouyer, Jérémy Morand, Serge Besansky, Nora J. Diabaté, Abdoulaye Simard, Frédéric eng 2010 Behavioral Ecology L72 - Organismes nuisibles des animaux L73 - Maladies des animaux Anopheles gambiae malaria Notonectidae prédateur écologie animale phénotype habitat interactions biologiques adaptabilité entomologie http://aims.fao.org/aos/agrovoc/c_30508 http://aims.fao.org/aos/agrovoc/c_34312 http://aims.fao.org/aos/agrovoc/c_30682 http://aims.fao.org/aos/agrovoc/c_6163 http://aims.fao.org/aos/agrovoc/c_427 http://aims.fao.org/aos/agrovoc/c_5776 http://aims.fao.org/aos/agrovoc/c_3456 http://aims.fao.org/aos/agrovoc/c_49896 http://aims.fao.org/aos/agrovoc/c_35024 http://aims.fao.org/aos/agrovoc/c_2588 Burkina Faso http://aims.fao.org/aos/agrovoc/c_8081 Disruptive selection mediated by predation on aquatic immature stages has been proposed as a major force driving ecological divergence and fostering speciation between the M and S molecular forms of the African malaria mosquito, Anopheles gambiae. In the dry savannahs of West Africa where both molecular forms co-occur, the S form thrives in temporary pools filled with rainwater, whereas the M form preferentially breeds in permanent freshwater habitats where predator pressure is higher. Here, we explored the proximal mechanisms by which predation may contribute to habitat segregation between molecular forms using progeny of female mosquitoes captured in Burkina Faso. We show that the S form suffers higher predation rates than the M form when simultaneously exposed to the widespread predator, Anisops jaczewskii in an experimental arena. Furthermore, behavioral plasticity induced by exposure to the predator was observed in the M form, but not in the S form, and may partially explain its habitat use and ecological divergence from the S form. We discuss the role of adaptive phenotypic plasticity in allowing successful colonization of a new ecological niche by the M form and highlight further research areas that need to be addressed for a better understanding of the ultimate mechanisms underlying ecological speciation in this pest of major medical importance. Key words: adaptation, Anopheles gambiae, behavior, habitat divergence, mosquito, notonectidae, phenotypic plasticity, predation, speciation. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/558056/1/document_558056.pdf application/pdf Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1093/beheco/arq114 10.1093/beheco/arq114 info:eu-repo/semantics/altIdentifier/doi/10.1093/beheco/arq114 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1093/beheco/arq114 |
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L72 - Organismes nuisibles des animaux L73 - Maladies des animaux Anopheles gambiae malaria Notonectidae prédateur écologie animale phénotype habitat interactions biologiques adaptabilité entomologie http://aims.fao.org/aos/agrovoc/c_30508 http://aims.fao.org/aos/agrovoc/c_34312 http://aims.fao.org/aos/agrovoc/c_30682 http://aims.fao.org/aos/agrovoc/c_6163 http://aims.fao.org/aos/agrovoc/c_427 http://aims.fao.org/aos/agrovoc/c_5776 http://aims.fao.org/aos/agrovoc/c_3456 http://aims.fao.org/aos/agrovoc/c_49896 http://aims.fao.org/aos/agrovoc/c_35024 http://aims.fao.org/aos/agrovoc/c_2588 http://aims.fao.org/aos/agrovoc/c_8081 L72 - Organismes nuisibles des animaux L73 - Maladies des animaux Anopheles gambiae malaria Notonectidae prédateur écologie animale phénotype habitat interactions biologiques adaptabilité entomologie http://aims.fao.org/aos/agrovoc/c_30508 http://aims.fao.org/aos/agrovoc/c_34312 http://aims.fao.org/aos/agrovoc/c_30682 http://aims.fao.org/aos/agrovoc/c_6163 http://aims.fao.org/aos/agrovoc/c_427 http://aims.fao.org/aos/agrovoc/c_5776 http://aims.fao.org/aos/agrovoc/c_3456 http://aims.fao.org/aos/agrovoc/c_49896 http://aims.fao.org/aos/agrovoc/c_35024 http://aims.fao.org/aos/agrovoc/c_2588 http://aims.fao.org/aos/agrovoc/c_8081 |
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L72 - Organismes nuisibles des animaux L73 - Maladies des animaux Anopheles gambiae malaria Notonectidae prédateur écologie animale phénotype habitat interactions biologiques adaptabilité entomologie http://aims.fao.org/aos/agrovoc/c_30508 http://aims.fao.org/aos/agrovoc/c_34312 http://aims.fao.org/aos/agrovoc/c_30682 http://aims.fao.org/aos/agrovoc/c_6163 http://aims.fao.org/aos/agrovoc/c_427 http://aims.fao.org/aos/agrovoc/c_5776 http://aims.fao.org/aos/agrovoc/c_3456 http://aims.fao.org/aos/agrovoc/c_49896 http://aims.fao.org/aos/agrovoc/c_35024 http://aims.fao.org/aos/agrovoc/c_2588 http://aims.fao.org/aos/agrovoc/c_8081 L72 - Organismes nuisibles des animaux L73 - Maladies des animaux Anopheles gambiae malaria Notonectidae prédateur écologie animale phénotype habitat interactions biologiques adaptabilité entomologie http://aims.fao.org/aos/agrovoc/c_30508 http://aims.fao.org/aos/agrovoc/c_34312 http://aims.fao.org/aos/agrovoc/c_30682 http://aims.fao.org/aos/agrovoc/c_6163 http://aims.fao.org/aos/agrovoc/c_427 http://aims.fao.org/aos/agrovoc/c_5776 http://aims.fao.org/aos/agrovoc/c_3456 http://aims.fao.org/aos/agrovoc/c_49896 http://aims.fao.org/aos/agrovoc/c_35024 http://aims.fao.org/aos/agrovoc/c_2588 http://aims.fao.org/aos/agrovoc/c_8081 Gimonneau, Geoffrey Bouyer, Jérémy Morand, Serge Besansky, Nora J. Diabaté, Abdoulaye Simard, Frédéric A behavioral mechanism underlying ecological divergence in the malaria mosquito Anopheles gambiae |
description |
Disruptive selection mediated by predation on aquatic immature stages has been proposed as a major force driving ecological divergence and fostering speciation between the M and S molecular forms of the African malaria mosquito, Anopheles gambiae. In the dry savannahs of West Africa where both molecular forms co-occur, the S form thrives in temporary pools filled with rainwater, whereas the M form preferentially breeds in permanent freshwater habitats where predator pressure is higher. Here, we explored the proximal mechanisms by which predation may contribute to habitat segregation between molecular forms using progeny of female mosquitoes captured in Burkina Faso. We show that the S form suffers higher predation rates than the M form when simultaneously exposed to the widespread predator, Anisops jaczewskii in an experimental arena. Furthermore, behavioral plasticity induced by exposure to the predator was observed in the M form, but not in the S form, and may partially explain its habitat use and ecological divergence from the S form. We discuss the role of adaptive phenotypic plasticity in allowing successful colonization of a new ecological niche by the M form and highlight further research areas that need to be addressed for a better understanding of the ultimate mechanisms underlying ecological speciation in this pest of major medical importance. Key words: adaptation, Anopheles gambiae, behavior, habitat divergence, mosquito, notonectidae, phenotypic plasticity, predation, speciation. |
format |
article |
topic_facet |
L72 - Organismes nuisibles des animaux L73 - Maladies des animaux Anopheles gambiae malaria Notonectidae prédateur écologie animale phénotype habitat interactions biologiques adaptabilité entomologie http://aims.fao.org/aos/agrovoc/c_30508 http://aims.fao.org/aos/agrovoc/c_34312 http://aims.fao.org/aos/agrovoc/c_30682 http://aims.fao.org/aos/agrovoc/c_6163 http://aims.fao.org/aos/agrovoc/c_427 http://aims.fao.org/aos/agrovoc/c_5776 http://aims.fao.org/aos/agrovoc/c_3456 http://aims.fao.org/aos/agrovoc/c_49896 http://aims.fao.org/aos/agrovoc/c_35024 http://aims.fao.org/aos/agrovoc/c_2588 http://aims.fao.org/aos/agrovoc/c_8081 |
author |
Gimonneau, Geoffrey Bouyer, Jérémy Morand, Serge Besansky, Nora J. Diabaté, Abdoulaye Simard, Frédéric |
author_facet |
Gimonneau, Geoffrey Bouyer, Jérémy Morand, Serge Besansky, Nora J. Diabaté, Abdoulaye Simard, Frédéric |
author_sort |
Gimonneau, Geoffrey |
title |
A behavioral mechanism underlying ecological divergence in the malaria mosquito Anopheles gambiae |
title_short |
A behavioral mechanism underlying ecological divergence in the malaria mosquito Anopheles gambiae |
title_full |
A behavioral mechanism underlying ecological divergence in the malaria mosquito Anopheles gambiae |
title_fullStr |
A behavioral mechanism underlying ecological divergence in the malaria mosquito Anopheles gambiae |
title_full_unstemmed |
A behavioral mechanism underlying ecological divergence in the malaria mosquito Anopheles gambiae |
title_sort |
behavioral mechanism underlying ecological divergence in the malaria mosquito anopheles gambiae |
url |
http://agritrop.cirad.fr/558056/ http://agritrop.cirad.fr/558056/1/document_558056.pdf |
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