Endocrine effects of the tapeworm Ligula intestinalis in its teleost host, the roach ( Rutilus rutilus).
Identifieur interne : 000226 ( PubMed/Corpus ); précédent : 000225; suivant : 000227Endocrine effects of the tapeworm Ligula intestinalis in its teleost host, the roach ( Rutilus rutilus).
Auteurs : P. Geraudie ; C. Boulange-Lecomte ; M. Gerbron ; N. Hinfray ; F. Brion ; C. MinierSource :
- Parasitology [ 1469-8161 ] ; 2010.
English descriptors
- KwdEn :
- MESH :
- chemical , blood : Steroids, Vitellogenins.
- chemical , metabolism : Aromatase.
- blood : Cyprinidae.
- enzymology : Brain.
- parasitology : Cyprinidae, Endocrine System.
- physiology : Cestoda, Cyprinidae.
- Animals, Female, Host-Parasite Interactions, Male, Population Density, Reproduction.
Abstract
The effects of parasite infection by the cestode Ligula intestinalis on the reproductive function and endocrine system of wild roach Rutilus rutilus were evaluated. Gonad maturation, plasma vitellogenin, plasma steroid concentrations (i.e. progesterone, 11-keto-testosterone and 17-beta-estradiol) and brain aromatase activity were investigated in relation with parasitization. A low prevalence (8%) of ligulosed roach and a moderate impact of parasitization (mean parasitization index of 8.8%) were found in the studied population. Inhibition of gonad maturation generally resulted from infestation but 5% of the ligulosed roach nevertheless reached maturity. Main sex steroid plasma content was depleted in both genders. Male 11-keto-testosterone, female 17-beta-estradiol and progesterone plasma concentrations of both genders were, respectively, 27, 5 and 3 times lower in ligulosed fish when compared to their non-infected counterparts. Progesterone levels were negatively correlated with the parasitization index in females. Brain aromatase activity of infected roach was reduced to 50% of that of the non-infected fish. These results demonstrate significant negative effects on the reproductive function of wild roach infected by the tapeworm L. intestinalis collected from a site with low contamination.
DOI: 10.1017/S003118200999151X
PubMed: 19961656
Links to Exploration step
pubmed:19961656Le document en format XML
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<author><name sortKey="Geraudie, P" sort="Geraudie, P" uniqKey="Geraudie P" first="P" last="Geraudie">P. Geraudie</name>
<affiliation><nlm:affiliation>Laboratory of Ecotoxicology, University of Le Havre, BP 540, 76058 Le Havre, France. perrine.maltret@univ-lehavre.fr</nlm:affiliation>
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<author><name sortKey="Boulange Lecomte, C" sort="Boulange Lecomte, C" uniqKey="Boulange Lecomte C" first="C" last="Boulange-Lecomte">C. Boulange-Lecomte</name>
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<author><name sortKey="Gerbron, M" sort="Gerbron, M" uniqKey="Gerbron M" first="M" last="Gerbron">M. Gerbron</name>
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<author><name sortKey="Hinfray, N" sort="Hinfray, N" uniqKey="Hinfray N" first="N" last="Hinfray">N. Hinfray</name>
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<author><name sortKey="Brion, F" sort="Brion, F" uniqKey="Brion F" first="F" last="Brion">F. Brion</name>
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<author><name sortKey="Minier, C" sort="Minier, C" uniqKey="Minier C" first="C" last="Minier">C. Minier</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en">Endocrine effects of the tapeworm Ligula intestinalis in its teleost host, the roach ( Rutilus rutilus).</title>
<author><name sortKey="Geraudie, P" sort="Geraudie, P" uniqKey="Geraudie P" first="P" last="Geraudie">P. Geraudie</name>
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<author><name sortKey="Boulange Lecomte, C" sort="Boulange Lecomte, C" uniqKey="Boulange Lecomte C" first="C" last="Boulange-Lecomte">C. Boulange-Lecomte</name>
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<author><name sortKey="Gerbron, M" sort="Gerbron, M" uniqKey="Gerbron M" first="M" last="Gerbron">M. Gerbron</name>
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<author><name sortKey="Hinfray, N" sort="Hinfray, N" uniqKey="Hinfray N" first="N" last="Hinfray">N. Hinfray</name>
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<author><name sortKey="Brion, F" sort="Brion, F" uniqKey="Brion F" first="F" last="Brion">F. Brion</name>
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<author><name sortKey="Minier, C" sort="Minier, C" uniqKey="Minier C" first="C" last="Minier">C. Minier</name>
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<series><title level="j">Parasitology</title>
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<imprint><date when="2010" type="published">2010</date>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Animals</term>
<term>Aromatase (metabolism)</term>
<term>Brain (enzymology)</term>
<term>Cestoda (physiology)</term>
<term>Cyprinidae (blood)</term>
<term>Cyprinidae (parasitology)</term>
<term>Cyprinidae (physiology)</term>
<term>Endocrine System (parasitology)</term>
<term>Female</term>
<term>Host-Parasite Interactions</term>
<term>Male</term>
<term>Population Density</term>
<term>Reproduction</term>
<term>Steroids (blood)</term>
<term>Vitellogenins (blood)</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="blood" xml:lang="en"><term>Steroids</term>
<term>Vitellogenins</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Aromatase</term>
</keywords>
<keywords scheme="MESH" qualifier="blood" xml:lang="en"><term>Cyprinidae</term>
</keywords>
<keywords scheme="MESH" qualifier="enzymology" xml:lang="en"><term>Brain</term>
</keywords>
<keywords scheme="MESH" qualifier="parasitology" xml:lang="en"><term>Cyprinidae</term>
<term>Endocrine System</term>
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<keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Cestoda</term>
<term>Cyprinidae</term>
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<keywords scheme="MESH" xml:lang="en"><term>Animals</term>
<term>Female</term>
<term>Host-Parasite Interactions</term>
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<front><div type="abstract" xml:lang="en">The effects of parasite infection by the cestode Ligula intestinalis on the reproductive function and endocrine system of wild roach Rutilus rutilus were evaluated. Gonad maturation, plasma vitellogenin, plasma steroid concentrations (i.e. progesterone, 11-keto-testosterone and 17-beta-estradiol) and brain aromatase activity were investigated in relation with parasitization. A low prevalence (8%) of ligulosed roach and a moderate impact of parasitization (mean parasitization index of 8.8%) were found in the studied population. Inhibition of gonad maturation generally resulted from infestation but 5% of the ligulosed roach nevertheless reached maturity. Main sex steroid plasma content was depleted in both genders. Male 11-keto-testosterone, female 17-beta-estradiol and progesterone plasma concentrations of both genders were, respectively, 27, 5 and 3 times lower in ligulosed fish when compared to their non-infected counterparts. Progesterone levels were negatively correlated with the parasitization index in females. Brain aromatase activity of infected roach was reduced to 50% of that of the non-infected fish. These results demonstrate significant negative effects on the reproductive function of wild roach infected by the tapeworm L. intestinalis collected from a site with low contamination.</div>
</front>
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<Abstract><AbstractText>The effects of parasite infection by the cestode Ligula intestinalis on the reproductive function and endocrine system of wild roach Rutilus rutilus were evaluated. Gonad maturation, plasma vitellogenin, plasma steroid concentrations (i.e. progesterone, 11-keto-testosterone and 17-beta-estradiol) and brain aromatase activity were investigated in relation with parasitization. A low prevalence (8%) of ligulosed roach and a moderate impact of parasitization (mean parasitization index of 8.8%) were found in the studied population. Inhibition of gonad maturation generally resulted from infestation but 5% of the ligulosed roach nevertheless reached maturity. Main sex steroid plasma content was depleted in both genders. Male 11-keto-testosterone, female 17-beta-estradiol and progesterone plasma concentrations of both genders were, respectively, 27, 5 and 3 times lower in ligulosed fish when compared to their non-infected counterparts. Progesterone levels were negatively correlated with the parasitization index in females. Brain aromatase activity of infected roach was reduced to 50% of that of the non-infected fish. These results demonstrate significant negative effects on the reproductive function of wild roach infected by the tapeworm L. intestinalis collected from a site with low contamination.</AbstractText>
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