Contemporary evolution of immunity during range expansion of two invasive rodents in Senegal
International audience Biological invasions provide unique opportunities for studying life history trait changes over contemporary time scales. As spatial spread may be related to changes in parasite communities, several hypotheses (such as the evolution of increased competitive ability (EICA) or EI...
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ftunivnantes:oai:HAL:hal-01792660v1 2023-05-15T18:05:27+02:00 Contemporary evolution of immunity during range expansion of two invasive rodents in Senegal Dalecky, Ambroise Laboratoire Population-Environnement-Développement (LPED) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU) 2017 https://hal.archives-ouvertes.fr/hal-01792660 en eng HAL CCSD Nordic Ecological Society hal-01792660 https://hal.archives-ouvertes.fr/hal-01792660 IRD: fdi:010070140 ISSN: 0030-1299 EISSN: 1600-0706 Oikos https://hal.archives-ouvertes.fr/hal-01792660 Oikos, Nordic Ecological Society, 2017 SENEGAL [SDE]Environmental Sciences [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2017 ftunivnantes 2022-09-20T23:05:20Z International audience Biological invasions provide unique opportunities for studying life history trait changes over contemporary time scales. As spatial spread may be related to changes in parasite communities, several hypotheses (such as the evolution of increased competitive ability (EICA) or EICA-refined hypotheses) suggest immune changes in invasive species along invasion gradients. Although native hosts may be subject to similar changes in parasite selection pressures, their immune responses have been rarely investigated in invasion contexts. In this study, we evaluated immune variations for invasive house mice Mus musculus domesticus, invasive black rats Rattus rattus and native rodents Mastomys erythroleucus and Mastomys natalensis along well-characterised invasion gradients in Senegal. We focused on antibody-mediated (natural antibodies and complement) and inflammatory (haptoglobin) responses. One invasion route was considered for each invasive species, and environmental conditions were recorded. Natural-antibody mediated responses increased between sites of long-established invasion and recently invaded sites only in house mice. Both invasive species exhibited higher inflammatory responses at the invasion front than in sites of long-established invasion. The immune responses of native species did not change with the presence of invasive species. These patterns of immune variations do not support the EICA and EICA refined hypotheses, and they rather suggest a higher risk of exposure to parasites on the invasion front. Altogether, these results provide a first basis to further assess the role of immune changes in invasion success. Article in Journal/Newspaper Rattus rattus Université de Nantes: HAL-UNIV-NANTES |
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Université de Nantes: HAL-UNIV-NANTES |
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English |
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SENEGAL [SDE]Environmental Sciences [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
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SENEGAL [SDE]Environmental Sciences [SDE.BE]Environmental Sciences/Biodiversity and Ecology Dalecky, Ambroise Contemporary evolution of immunity during range expansion of two invasive rodents in Senegal |
topic_facet |
SENEGAL [SDE]Environmental Sciences [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience Biological invasions provide unique opportunities for studying life history trait changes over contemporary time scales. As spatial spread may be related to changes in parasite communities, several hypotheses (such as the evolution of increased competitive ability (EICA) or EICA-refined hypotheses) suggest immune changes in invasive species along invasion gradients. Although native hosts may be subject to similar changes in parasite selection pressures, their immune responses have been rarely investigated in invasion contexts. In this study, we evaluated immune variations for invasive house mice Mus musculus domesticus, invasive black rats Rattus rattus and native rodents Mastomys erythroleucus and Mastomys natalensis along well-characterised invasion gradients in Senegal. We focused on antibody-mediated (natural antibodies and complement) and inflammatory (haptoglobin) responses. One invasion route was considered for each invasive species, and environmental conditions were recorded. Natural-antibody mediated responses increased between sites of long-established invasion and recently invaded sites only in house mice. Both invasive species exhibited higher inflammatory responses at the invasion front than in sites of long-established invasion. The immune responses of native species did not change with the presence of invasive species. These patterns of immune variations do not support the EICA and EICA refined hypotheses, and they rather suggest a higher risk of exposure to parasites on the invasion front. Altogether, these results provide a first basis to further assess the role of immune changes in invasion success. |
author2 |
Laboratoire Population-Environnement-Développement (LPED) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU) |
format |
Article in Journal/Newspaper |
author |
Dalecky, Ambroise |
author_facet |
Dalecky, Ambroise |
author_sort |
Dalecky, Ambroise |
title |
Contemporary evolution of immunity during range expansion of two invasive rodents in Senegal |
title_short |
Contemporary evolution of immunity during range expansion of two invasive rodents in Senegal |
title_full |
Contemporary evolution of immunity during range expansion of two invasive rodents in Senegal |
title_fullStr |
Contemporary evolution of immunity during range expansion of two invasive rodents in Senegal |
title_full_unstemmed |
Contemporary evolution of immunity during range expansion of two invasive rodents in Senegal |
title_sort |
contemporary evolution of immunity during range expansion of two invasive rodents in senegal |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://hal.archives-ouvertes.fr/hal-01792660 |
genre |
Rattus rattus |
genre_facet |
Rattus rattus |
op_source |
ISSN: 0030-1299 EISSN: 1600-0706 Oikos https://hal.archives-ouvertes.fr/hal-01792660 Oikos, Nordic Ecological Society, 2017 |
op_relation |
hal-01792660 https://hal.archives-ouvertes.fr/hal-01792660 IRD: fdi:010070140 |
_version_ |
1766176917662203904 |