OUTCROSSING INCREASES INFECTION SUCCESS AND COMPETITIVE ABILITY: EXPERIMENTAL EVIDENCE FROM A HERMAPHRODITE PARASITE
Identifieur interne : 001E88 ( Main/Merge ); précédent : 001E87; suivant : 001E89OUTCROSSING INCREASES INFECTION SUCCESS AND COMPETITIVE ABILITY: EXPERIMENTAL EVIDENCE FROM A HERMAPHRODITE PARASITE
Auteurs : Mira Christen [Allemagne] ; Joachim Kurtz [Allemagne] ; Manfred Milinski [Allemagne]Source :
- Evolution [ 0014-3820 ] ; 2002-11.
Descripteurs français
- Wicri :
- topic : Concurrence.
English descriptors
- KwdEn :
Abstract
Abstract.— The maintenance of two genetically distinct reproductive modes such as outcrossing and selfing within a population of animals or plants is still a matter of considerable debate. Hermaphroditic parasites often reproduce either alone by selfing or in pairs by outcrossing. They can be used as a model to study potential benefits of outcrossing. Any advantage from outcrossing may be important, especially in host‐parasite coevolution, but has not, to our knowledge, been studied yet in any parasite species. We studied the potential effect of outcrossing in a tapeworm, Schis‐tocephalus solidus, on both infection success and growth in its first intermediate host, the copepod Macrocyclops albidus. Tapeworms that had been obtained from natural populations of three‐spined sticklebacks (Gasterosteus acu‐leatus) were allowed to reproduce either alone or in pairs, in an in vitro system that replaced the final host's gut. This resulted in either selfed or outcrossed offspring, respectively. In one part of the experiment, copepods were exposed to either selfed or outcrossed parasites, in a second part to both types simultaneously, in order to study the effect of competition between them. To discriminate parasites of either origin within the same host, a novel method for fluorescent vital labeling was used. We show here for the first time that outcrossed parasites had a higher infection success and faster development in the host. This advantage of outcrossing became apparent only in the competitive situation, in which superior abilities of parasites to extract limiting resources from the host become crucial.
Url:
DOI: 10.1111/j.0014-3820.2002.tb00148.x
Links toward previous steps (curation, corpus...)
- to stream Istex, to step Corpus: 001934
- to stream Istex, to step Curation: 001818
- to stream Istex, to step Checkpoint: 000B48
Links to Exploration step
ISTEX:1C8F5E2F4DA626E68C61C43A373091F1A55C6D5ELe document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">OUTCROSSING INCREASES INFECTION SUCCESS AND COMPETITIVE ABILITY: EXPERIMENTAL EVIDENCE FROM A HERMAPHRODITE PARASITE</title><author><name sortKey="Christen, Mira" sort="Christen, Mira" uniqKey="Christen M" first="Mira" last="Christen">Mira Christen</name></author><author><name sortKey="Kurtz, Joachim" sort="Kurtz, Joachim" uniqKey="Kurtz J" first="Joachim" last="Kurtz">Joachim Kurtz</name></author><author><name sortKey="Milinski, Manfred" sort="Milinski, Manfred" uniqKey="Milinski M" first="Manfred" last="Milinski">Manfred Milinski</name></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:1C8F5E2F4DA626E68C61C43A373091F1A55C6D5E</idno><date when="2002" year="2002">2002</date><idno type="doi">10.1111/j.0014-3820.2002.tb00148.x</idno><idno type="url">https://api.istex.fr/document/1C8F5E2F4DA626E68C61C43A373091F1A55C6D5E/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">001934</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">001934</idno><idno type="wicri:Area/Istex/Curation">001818</idno><idno type="wicri:Area/Istex/Checkpoint">000B48</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Checkpoint">000B48</idno><idno type="wicri:doubleKey">0014-3820:2002:Christen M:outcrossing:increases:infection</idno><idno type="wicri:Area/Main/Merge">001E88</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">OUTCROSSING INCREASES INFECTION SUCCESS AND COMPETITIVE ABILITY: EXPERIMENTAL EVIDENCE FROM A HERMAPHRODITE PARASITE</title><author><name sortKey="Christen, Mira" sort="Christen, Mira" uniqKey="Christen M" first="Mira" last="Christen">Mira Christen</name><affiliation wicri:level="1"><country wicri:rule="url">Allemagne</country><wicri:regionArea>Department of Evolutionary Ecology, Max‐Planck‐Institute of Limnology, August‐Thienemann‐Strasse 2, 24306 Plön</wicri:regionArea><wicri:noRegion>24306 Plön</wicri:noRegion><wicri:noRegion>24306 Plön</wicri:noRegion></affiliation></author><author><name sortKey="Kurtz, Joachim" sort="Kurtz, Joachim" uniqKey="Kurtz J" first="Joachim" last="Kurtz">Joachim Kurtz</name><affiliation wicri:level="1"><country wicri:rule="url">Allemagne</country><wicri:regionArea>Department of Evolutionary Ecology, Max‐Planck‐Institute of Limnology, August‐Thienemann‐Strasse 2, 24306 Plön</wicri:regionArea><wicri:noRegion>24306 Plön</wicri:noRegion><wicri:noRegion>24306 Plön</wicri:noRegion></affiliation></author><author><name sortKey="Milinski, Manfred" sort="Milinski, Manfred" uniqKey="Milinski M" first="Manfred" last="Milinski">Manfred Milinski</name><affiliation wicri:level="1"><country wicri:rule="url">Allemagne</country><wicri:regionArea>Department of Evolutionary Ecology, Max‐Planck‐Institute of Limnology, August‐Thienemann‐Strasse 2, 24306 Plön</wicri:regionArea><wicri:noRegion>24306 Plön</wicri:noRegion><wicri:noRegion>24306 Plön</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Evolution</title><idno type="ISSN">0014-3820</idno><idno type="eISSN">1558-5646</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2002-11">2002-11</date><biblScope unit="volume">56</biblScope><biblScope unit="issue">11</biblScope><biblScope unit="page" from="2243">2243</biblScope><biblScope unit="page" to="2251">2251</biblScope></imprint><idno type="ISSN">0014-3820</idno></series><idno type="istex">1C8F5E2F4DA626E68C61C43A373091F1A55C6D5E</idno><idno type="DOI">10.1111/j.0014-3820.2002.tb00148.x</idno><idno type="ArticleID">EVO2243</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0014-3820</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Competition</term><term>Schistocephalus solidus</term><term>host‐parasite coevolution</term><term>inbreeding depression</term><term>mixed mating system</term><term>selfing</term><term>sexual reproduction</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Concurrence</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">Abstract.— The maintenance of two genetically distinct reproductive modes such as outcrossing and selfing within a population of animals or plants is still a matter of considerable debate. Hermaphroditic parasites often reproduce either alone by selfing or in pairs by outcrossing. They can be used as a model to study potential benefits of outcrossing. Any advantage from outcrossing may be important, especially in host‐parasite coevolution, but has not, to our knowledge, been studied yet in any parasite species. We studied the potential effect of outcrossing in a tapeworm, Schis‐tocephalus solidus, on both infection success and growth in its first intermediate host, the copepod Macrocyclops albidus. Tapeworms that had been obtained from natural populations of three‐spined sticklebacks (Gasterosteus acu‐leatus) were allowed to reproduce either alone or in pairs, in an in vitro system that replaced the final host's gut. This resulted in either selfed or outcrossed offspring, respectively. In one part of the experiment, copepods were exposed to either selfed or outcrossed parasites, in a second part to both types simultaneously, in order to study the effect of competition between them. To discriminate parasites of either origin within the same host, a novel method for fluorescent vital labeling was used. We show here for the first time that outcrossed parasites had a higher infection success and faster development in the host. This advantage of outcrossing became apparent only in the competitive situation, in which superior abilities of parasites to extract limiting resources from the host become crucial.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Rhénanie/explor/UnivTrevesV1/Data/Main/Merge
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 001E88 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Merge/biblio.hfd -nk 001E88 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Rhénanie
|area= UnivTrevesV1
|flux= Main
|étape= Merge
|type= RBID
|clé= ISTEX:1C8F5E2F4DA626E68C61C43A373091F1A55C6D5E
|texte= OUTCROSSING INCREASES INFECTION SUCCESS AND COMPETITIVE ABILITY: EXPERIMENTAL EVIDENCE FROM A HERMAPHRODITE PARASITE
}}
| This area was generated with Dilib version V0.6.31. |  |