Host‐parasite life‐histories of the diurnal vs . nocturnal chronotypes of Schistosoma mansoni : adaptive significance
International audience Objectives: To optimise host-to-host transmission, digenean trematodes (parasites) synchronise their cercarial emission patterns with the aquatic activities of their vertebrate hosts. Schistosoma mansoni has two different circadian chronotypes: a diurnal shedding pattern with...
Published in: | Tropical Medicine & International Health |
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ftunivnantes:oai:HAL:hal-02169763v1 2023-05-15T18:05:35+02:00 Host‐parasite life‐histories of the diurnal vs . nocturnal chronotypes of Schistosoma mansoni : adaptive significance Mouahid, Gabriel Mintsa Nguema, Rodrigue Al Mashikhi, Khalid, Al Yafae, Salem, Idris, Mohamed, Moné, Hélène Interactions Hôtes-Pathogènes-Environnements (IHPE) Université de Perpignan Via Domitia (UPVD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM) Institut de Recherche en Ecologie Tropicale Libreville Directorate General of Health Services Department of Microbiology and Immunology, College of Medicine and Health Sciences Sultan Qaboos University (SQU) 2019 https://hal.archives-ouvertes.fr/hal-02169763 https://hal.archives-ouvertes.fr/hal-02169763/document https://hal.archives-ouvertes.fr/hal-02169763/file/Mouahid-2019-TMIH-Host-PREPRINT%20%281%29.pdf https://doi.org/10.1111/tmi.13227 en eng HAL CCSD John Wiley & Sons Ltd info:eu-repo/semantics/altIdentifier/doi/10.1111/tmi.13227 hal-02169763 https://hal.archives-ouvertes.fr/hal-02169763 https://hal.archives-ouvertes.fr/hal-02169763/document https://hal.archives-ouvertes.fr/hal-02169763/file/Mouahid-2019-TMIH-Host-PREPRINT%20%281%29.pdf doi:10.1111/tmi.13227 info:eu-repo/semantics/OpenAccess Tropical Medicine & International Health https://hal.archives-ouvertes.fr/hal-02169763 Tropical Medicine & International Health, 2019, 24 (6), pp.692-700. ⟨10.1111/tmi.13227⟩ Schistosoma mansoni nocturnal chronotype cercarial emergence pattern circadian rhythm sympatric speciation [SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology info:eu-repo/semantics/article Journal articles 2019 ftunivnantes https://doi.org/10.1111/tmi.13227 2022-12-07T01:12:07Z International audience Objectives: To optimise host-to-host transmission, digenean trematodes (parasites) synchronise their cercarial emission patterns with the aquatic activities of their vertebrate hosts. Schistosoma mansoni has two different circadian chronotypes: a diurnal shedding pattern with a mean peak occurring at 11:00 h, and a nocturnal shedding pattern with a mean peak occurring at 20:00 h. We analysed the life-history variations between these two chronotypes at the levels of the parasite and its hosts.MMethods For each chronotype, we quantified three life-history traits related to the parasite (prepatent period, infection rate and cercarial production) and analysed the morphometry and the morphology of the parasite eggs; we also quantified three life-history traits related to the snail intermediate host (shell diameter, fecundity and survival rate) and one life-history trait related to the experimental definitive host (survival rate). A phylogeny based on the mitochondrial cytochromeoxidase gene was made on samples of both chronotypes. results Life-history analysis revealed significant variations between the two chronotypes. Lifehistory traits were optimal for both the parasite and the snail host for the diurnal chronotype compared to the nocturnal one. The new chronotype behaved like an allopatric population towards its snail host. Phylogenetic analysis supports the hypothesis of a lateral transfer of S. mansoni from humans to Rattus rattus. These results were interpreted in terms of an ongoing sympatric speciation.Conclusion The nocturnal chronotype of S. mansoni showed non-adapted life-history traits in its relation with the snail intermediate host Biomphalaria pfeifferi. The emergence of this new phenotype is probably linked to divergent natural selection. Article in Journal/Newspaper Rattus rattus Université de Nantes: HAL-UNIV-NANTES Tropical Medicine & International Health 24 6 692 700 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Schistosoma mansoni nocturnal chronotype cercarial emergence pattern circadian rhythm sympatric speciation [SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology |
spellingShingle |
Schistosoma mansoni nocturnal chronotype cercarial emergence pattern circadian rhythm sympatric speciation [SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology Mouahid, Gabriel Mintsa Nguema, Rodrigue Al Mashikhi, Khalid, Al Yafae, Salem, Idris, Mohamed, Moné, Hélène Host‐parasite life‐histories of the diurnal vs . nocturnal chronotypes of Schistosoma mansoni : adaptive significance |
topic_facet |
Schistosoma mansoni nocturnal chronotype cercarial emergence pattern circadian rhythm sympatric speciation [SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology |
description |
International audience Objectives: To optimise host-to-host transmission, digenean trematodes (parasites) synchronise their cercarial emission patterns with the aquatic activities of their vertebrate hosts. Schistosoma mansoni has two different circadian chronotypes: a diurnal shedding pattern with a mean peak occurring at 11:00 h, and a nocturnal shedding pattern with a mean peak occurring at 20:00 h. We analysed the life-history variations between these two chronotypes at the levels of the parasite and its hosts.MMethods For each chronotype, we quantified three life-history traits related to the parasite (prepatent period, infection rate and cercarial production) and analysed the morphometry and the morphology of the parasite eggs; we also quantified three life-history traits related to the snail intermediate host (shell diameter, fecundity and survival rate) and one life-history trait related to the experimental definitive host (survival rate). A phylogeny based on the mitochondrial cytochromeoxidase gene was made on samples of both chronotypes. results Life-history analysis revealed significant variations between the two chronotypes. Lifehistory traits were optimal for both the parasite and the snail host for the diurnal chronotype compared to the nocturnal one. The new chronotype behaved like an allopatric population towards its snail host. Phylogenetic analysis supports the hypothesis of a lateral transfer of S. mansoni from humans to Rattus rattus. These results were interpreted in terms of an ongoing sympatric speciation.Conclusion The nocturnal chronotype of S. mansoni showed non-adapted life-history traits in its relation with the snail intermediate host Biomphalaria pfeifferi. The emergence of this new phenotype is probably linked to divergent natural selection. |
author2 |
Interactions Hôtes-Pathogènes-Environnements (IHPE) Université de Perpignan Via Domitia (UPVD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM) Institut de Recherche en Ecologie Tropicale Libreville Directorate General of Health Services Department of Microbiology and Immunology, College of Medicine and Health Sciences Sultan Qaboos University (SQU) |
format |
Article in Journal/Newspaper |
author |
Mouahid, Gabriel Mintsa Nguema, Rodrigue Al Mashikhi, Khalid, Al Yafae, Salem, Idris, Mohamed, Moné, Hélène |
author_facet |
Mouahid, Gabriel Mintsa Nguema, Rodrigue Al Mashikhi, Khalid, Al Yafae, Salem, Idris, Mohamed, Moné, Hélène |
author_sort |
Mouahid, Gabriel |
title |
Host‐parasite life‐histories of the diurnal vs . nocturnal chronotypes of Schistosoma mansoni : adaptive significance |
title_short |
Host‐parasite life‐histories of the diurnal vs . nocturnal chronotypes of Schistosoma mansoni : adaptive significance |
title_full |
Host‐parasite life‐histories of the diurnal vs . nocturnal chronotypes of Schistosoma mansoni : adaptive significance |
title_fullStr |
Host‐parasite life‐histories of the diurnal vs . nocturnal chronotypes of Schistosoma mansoni : adaptive significance |
title_full_unstemmed |
Host‐parasite life‐histories of the diurnal vs . nocturnal chronotypes of Schistosoma mansoni : adaptive significance |
title_sort |
host‐parasite life‐histories of the diurnal vs . nocturnal chronotypes of schistosoma mansoni : adaptive significance |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.archives-ouvertes.fr/hal-02169763 https://hal.archives-ouvertes.fr/hal-02169763/document https://hal.archives-ouvertes.fr/hal-02169763/file/Mouahid-2019-TMIH-Host-PREPRINT%20%281%29.pdf https://doi.org/10.1111/tmi.13227 |
genre |
Rattus rattus |
genre_facet |
Rattus rattus |
op_source |
Tropical Medicine & International Health https://hal.archives-ouvertes.fr/hal-02169763 Tropical Medicine & International Health, 2019, 24 (6), pp.692-700. ⟨10.1111/tmi.13227⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/tmi.13227 hal-02169763 https://hal.archives-ouvertes.fr/hal-02169763 https://hal.archives-ouvertes.fr/hal-02169763/document https://hal.archives-ouvertes.fr/hal-02169763/file/Mouahid-2019-TMIH-Host-PREPRINT%20%281%29.pdf doi:10.1111/tmi.13227 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1111/tmi.13227 |
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Tropical Medicine & International Health |
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700 |
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