Predator's dietary response to prey density variation and consequences for a cestode transmission
Identifieur interne : 000435 ( Main/Exploration ); précédent : 000434; suivant : 000436Predator's dietary response to prey density variation and consequences for a cestode transmission
Auteurs : Francis Raoul [France] ; P. Deplazes [Suisse] ; D. Rieffel [France] ; J. C. Lambert [France] ; P. Giraudoux [France]Source :
- Oecologia [ 0029-8549 ] ; 2010.
Abstract
Functional response of predators to prey density variations has been already documented to understand predation patterns. However, the consequences of functional response on parasite transmission remain largely unexplored. The rodents Microtus arvalis and Arvicola terrestris are the main preys of the red fox Vulpes vulpes in eastern France. These species are intermediate and definitive hosts of the cestode Echinococcus multilocularis. We explored fox dietary and contamination responses to prey density variations. The dietary response differed between the two prey species: no response for M. arvalis and a type-III like (sigmoidal) response for A. terrestris with a possible interference with M. arvalis. Fox contamination response followed a type-II shape (asymptotic) for both species. We conclude that fox predation is species-specific and E. multilocularis transmission is likely to be regulated by a complex combination of predation and immunological factors. These results should provide clues to better understand biological and ecological mechanisms involved in the transmission dynamics of trophically transmitted parasites when multiple hosts are involved. Also the relevance of models of parasite transmission should be enhanced if non-linear patterns are taken into account.
Url:
Affiliations:
- France, Suisse
- Franche-Comté
- Besançon
- Université de Bourgogne Franche-Comté, Université de Franche-Comté
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Le document en format XML
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C." last="Lambert">J. C. Lambert</name><affiliation wicri:level="1"><hal:affiliation type="laboratory" xml:id="struct-57629" status="VALID"><idno type="IdRef">166212377</idno><idno type="RNSR">200812285Y</idno><orgName>Laboratoire Chrono-environnement</orgName><orgName type="acronym">LCE</orgName><desc><address><addrLine>UFR Sciences et Techniques - 16, route de Gray - 25030 Besançon Cedex</addrLine><country key="FR"></country></address><ref type="url">http://chrono-environnement.univ-fcomte.fr/</ref></desc><listRelation><relation name="UMR6249" active="#struct-441569" type="direct"></relation><relation active="#struct-458810" type="direct"></relation></listRelation><tutelles><tutelle name="UMR6249" active="#struct-441569" type="direct"><org type="institution" xml:id="struct-441569" status="VALID"><idno type="IdRef">02636817X</idno><idno type="ISNI">0000000122597504</idno><orgName>Centre National de la Recherche Scientifique</orgName><orgName type="acronym">CNRS</orgName><date type="start">1939-10-19</date><desc><address><country key="FR"></country></address><ref type="url">http://www.cnrs.fr/</ref></desc></org></tutelle><tutelle active="#struct-458810" type="direct"><org type="institution" xml:id="struct-458810" status="VALID"> <idno type="IdRef">026403188</idno> <idno type="ISNI">0000 0001 2188 3779 </idno> <orgName>Université de Franche-Comté</orgName> <orgName type="acronym">UFC</orgName> <desc> <address> <country key="FR"></country> </address> <ref type="url">http://www.univ-fcomte.fr</ref> </desc></org></tutelle></tutelles></hal:affiliation><country>France</country><placeName><settlement type="city" wicri:auto="siege">Besançon</settlement><region type="region" nuts="2">Franche-Comté</region></placeName><orgName type="university">Université de Franche-Comté</orgName><orgName type="institution" wicri:auto="newGroup">Université de Bourgogne Franche-Comté</orgName></affiliation></author><author><name sortKey="Giraudoux, P" sort="Giraudoux, P" uniqKey="Giraudoux P" first="P." last="Giraudoux">P. Giraudoux</name><affiliation wicri:level="1"><hal:affiliation type="laboratory" xml:id="struct-57629" status="VALID"><idno type="IdRef">166212377</idno><idno type="RNSR">200812285Y</idno><orgName>Laboratoire Chrono-environnement</orgName><orgName type="acronym">LCE</orgName><desc><address><addrLine>UFR Sciences et Techniques - 16, route de Gray - 25030 Besançon Cedex</addrLine><country key="FR"></country></address><ref type="url">http://chrono-environnement.univ-fcomte.fr/</ref></desc><listRelation><relation name="UMR6249" active="#struct-441569" type="direct"></relation><relation active="#struct-458810" type="direct"></relation></listRelation><tutelles><tutelle name="UMR6249" active="#struct-441569" type="direct"><org type="institution" xml:id="struct-441569" status="VALID"><idno type="IdRef">02636817X</idno><idno type="ISNI">0000000122597504</idno><orgName>Centre National de la Recherche Scientifique</orgName><orgName type="acronym">CNRS</orgName><date type="start">1939-10-19</date><desc><address><country key="FR"></country></address><ref type="url">http://www.cnrs.fr/</ref></desc></org></tutelle><tutelle active="#struct-458810" type="direct"><org type="institution" xml:id="struct-458810" status="VALID"> <idno type="IdRef">026403188</idno> <idno type="ISNI">0000 0001 2188 3779 </idno> <orgName>Université de Franche-Comté</orgName> <orgName type="acronym">UFC</orgName> <desc> <address> <country key="FR"></country> </address> <ref type="url">http://www.univ-fcomte.fr</ref> </desc></org></tutelle></tutelles></hal:affiliation><country>France</country><placeName><settlement type="city" wicri:auto="siege">Besançon</settlement><region type="region" nuts="2">Franche-Comté</region></placeName><orgName type="university">Université de Franche-Comté</orgName><orgName type="institution" wicri:auto="newGroup">Université de Bourgogne Franche-Comté</orgName></affiliation></author></analytic><series><title level="j">Oecologia</title><idno type="ISSN">0029-8549</idno><imprint><date type="datePub">2010</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Functional response of predators to prey density variations has been already documented to understand predation patterns. However, the consequences of functional response on parasite transmission remain largely unexplored. The rodents Microtus arvalis and Arvicola terrestris are the main preys of the red fox Vulpes vulpes in eastern France. These species are intermediate and definitive hosts of the cestode Echinococcus multilocularis. We explored fox dietary and contamination responses to prey density variations. The dietary response differed between the two prey species: no response for M. arvalis and a type-III like (sigmoidal) response for A. terrestris with a possible interference with M. arvalis. Fox contamination response followed a type-II shape (asymptotic) for both species. We conclude that fox predation is species-specific and E. multilocularis transmission is likely to be regulated by a complex combination of predation and immunological factors. These results should provide clues to better understand biological and ecological mechanisms involved in the transmission dynamics of trophically transmitted parasites when multiple hosts are involved. Also the relevance of models of parasite transmission should be enhanced if non-linear patterns are taken into account.</div></front></TEI><affiliations><list><country><li>France</li><li>Suisse</li></country><region><li>Franche-Comté</li></region><settlement><li>Besançon</li></settlement><orgName><li>Université de Bourgogne Franche-Comté</li><li>Université de Franche-Comté</li></orgName></list><tree><country name="France"><region name="Franche-Comté"><name sortKey="Raoul, Francis" sort="Raoul, Francis" uniqKey="Raoul F" first="Francis" last="Raoul">Francis Raoul</name></region><name sortKey="Giraudoux, P" sort="Giraudoux, P" uniqKey="Giraudoux P" first="P." last="Giraudoux">P. Giraudoux</name><name sortKey="Lambert, J C" sort="Lambert, J C" uniqKey="Lambert J" first="J. C." last="Lambert">J. C. Lambert</name><name sortKey="Rieffel, D" sort="Rieffel, D" uniqKey="Rieffel D" first="D." last="Rieffel">D. Rieffel</name></country><country name="Suisse"><noRegion><name sortKey="Deplazes, P" sort="Deplazes, P" uniqKey="Deplazes P" first="P." last="Deplazes">P. Deplazes</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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