Atlantic salmon infected with salmon lice are more susceptible to new lice infections
International audience Aggregation is commonly observed for macroparasites, but its adaptive value remains unclear. Heavy infestations intensities may lead to a decrease in some fitness-related traits of parasites (e.g. parasite fecundity or survival). However, to a dioecious parasite, increased agg...
Published in: | Journal of Fish Diseases |
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Online Access: | https://hal-u-picardie.archives-ouvertes.fr/hal-03616644 https://doi.org/10.1111/jfd.12514 |
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ftunivnantes:oai:HAL:hal-03616644v1 2023-05-15T15:30:49+02:00 Atlantic salmon infected with salmon lice are more susceptible to new lice infections Ugelvik, M. S. Mo, T. Mennerat, Adèle Skorping, A. Ecologie et Dynamique des Systèmes Anthropisés - UMR CNRS 7058 (EDYSAN) Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS) Department of Biological Sciences Bergen (BIO / UiB) University of Bergen (UiB) 2017 https://hal-u-picardie.archives-ouvertes.fr/hal-03616644 https://doi.org/10.1111/jfd.12514 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1111/jfd.12514 hal-03616644 https://hal-u-picardie.archives-ouvertes.fr/hal-03616644 doi:10.1111/jfd.12514 ISSN: 0140-7775 EISSN: 1365-2761 Journal of Fish Diseases https://hal-u-picardie.archives-ouvertes.fr/hal-03616644 Journal of Fish Diseases, 2017, 40 (3), pp.311-317. ⟨10.1111/jfd.12514⟩ [SDV]Life Sciences [q-bio] info:eu-repo/semantics/article Journal articles 2017 ftunivnantes https://doi.org/10.1111/jfd.12514 2023-03-08T01:56:51Z International audience Aggregation is commonly observed for macroparasites, but its adaptive value remains unclear. Heavy infestations intensities may lead to a decrease in some fitness-related traits of parasites (e.g. parasite fecundity or survival). However, to a dioecious parasite, increased aggregation could also increase the chance of finding individuals of the opposite sex. In a laboratory experiment, we tested if previous experience with salmon lice (Lepeophtheirus salmonis) affected susceptibility of Atlantic salmon (Salmo salar) to later exposure to the same parasite species. We found that currently infected fish got higher intensities of new lice than naive fish. This suggests that hosts already carrying parasites are more susceptible to new lice infections. For this dioecious parasite, such positive density dependence might be adaptive, ensuring successful reproduction under conditions of low lice densities by increasing the probability of both sexes infecting the same host. Article in Journal/Newspaper Atlantic salmon Salmo salar Université de Nantes: HAL-UNIV-NANTES Journal of Fish Diseases 40 3 311 317 |
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Université de Nantes: HAL-UNIV-NANTES |
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ftunivnantes |
language |
English |
topic |
[SDV]Life Sciences [q-bio] |
spellingShingle |
[SDV]Life Sciences [q-bio] Ugelvik, M. S. Mo, T. Mennerat, Adèle Skorping, A. Atlantic salmon infected with salmon lice are more susceptible to new lice infections |
topic_facet |
[SDV]Life Sciences [q-bio] |
description |
International audience Aggregation is commonly observed for macroparasites, but its adaptive value remains unclear. Heavy infestations intensities may lead to a decrease in some fitness-related traits of parasites (e.g. parasite fecundity or survival). However, to a dioecious parasite, increased aggregation could also increase the chance of finding individuals of the opposite sex. In a laboratory experiment, we tested if previous experience with salmon lice (Lepeophtheirus salmonis) affected susceptibility of Atlantic salmon (Salmo salar) to later exposure to the same parasite species. We found that currently infected fish got higher intensities of new lice than naive fish. This suggests that hosts already carrying parasites are more susceptible to new lice infections. For this dioecious parasite, such positive density dependence might be adaptive, ensuring successful reproduction under conditions of low lice densities by increasing the probability of both sexes infecting the same host. |
author2 |
Ecologie et Dynamique des Systèmes Anthropisés - UMR CNRS 7058 (EDYSAN) Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS) Department of Biological Sciences Bergen (BIO / UiB) University of Bergen (UiB) |
format |
Article in Journal/Newspaper |
author |
Ugelvik, M. S. Mo, T. Mennerat, Adèle Skorping, A. |
author_facet |
Ugelvik, M. S. Mo, T. Mennerat, Adèle Skorping, A. |
author_sort |
Ugelvik, M. S. |
title |
Atlantic salmon infected with salmon lice are more susceptible to new lice infections |
title_short |
Atlantic salmon infected with salmon lice are more susceptible to new lice infections |
title_full |
Atlantic salmon infected with salmon lice are more susceptible to new lice infections |
title_fullStr |
Atlantic salmon infected with salmon lice are more susceptible to new lice infections |
title_full_unstemmed |
Atlantic salmon infected with salmon lice are more susceptible to new lice infections |
title_sort |
atlantic salmon infected with salmon lice are more susceptible to new lice infections |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://hal-u-picardie.archives-ouvertes.fr/hal-03616644 https://doi.org/10.1111/jfd.12514 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
ISSN: 0140-7775 EISSN: 1365-2761 Journal of Fish Diseases https://hal-u-picardie.archives-ouvertes.fr/hal-03616644 Journal of Fish Diseases, 2017, 40 (3), pp.311-317. ⟨10.1111/jfd.12514⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/jfd.12514 hal-03616644 https://hal-u-picardie.archives-ouvertes.fr/hal-03616644 doi:10.1111/jfd.12514 |
op_doi |
https://doi.org/10.1111/jfd.12514 |
container_title |
Journal of Fish Diseases |
container_volume |
40 |
container_issue |
3 |
container_start_page |
311 |
op_container_end_page |
317 |
_version_ |
1766361281064861696 |