Hyper- and Hypo-Osmoregulatory Performance of Atlantic Salmon (Salmo salar) Smolts Infected With Pomphorhynchus tereticollis (Acanthocephala)
Migratory species must cope with different parasite communities in different environments, but little is known about the ecophysiological effects of parasites on migratory performance. Some species/strains of acanthocephalan parasites in the genus Pomphorhynchus use anadromous salmonids as preferred...
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ftdoajarticles:oai:doaj.org/article:cbcc98e55dd84a88bc637d046608cc10 2023-05-15T15:31:49+02:00 Hyper- and Hypo-Osmoregulatory Performance of Atlantic Salmon (Salmo salar) Smolts Infected With Pomphorhynchus tereticollis (Acanthocephala) Ross W. Finlay Russell Poole Ger Rogan Eileen Dillane Deirdre Cotter Thomas E. Reed 2021-08-01T00:00:00Z https://doi.org/10.3389/fevo.2021.689233 https://doaj.org/article/cbcc98e55dd84a88bc637d046608cc10 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fevo.2021.689233/full https://doaj.org/toc/2296-701X 2296-701X doi:10.3389/fevo.2021.689233 https://doaj.org/article/cbcc98e55dd84a88bc637d046608cc10 Frontiers in Ecology and Evolution, Vol 9 (2021) parasite stress osmoregulation anadromy salmonid Pomphorhynchus tereticollis Evolution QH359-425 Ecology QH540-549.5 article 2021 ftdoajarticles https://doi.org/10.3389/fevo.2021.689233 2022-12-31T12:37:27Z Migratory species must cope with different parasite communities in different environments, but little is known about the ecophysiological effects of parasites on migratory performance. Some species/strains of acanthocephalan parasites in the genus Pomphorhynchus use anadromous salmonids as preferred definitive hosts, perforating the intestines, destroying mucosa and inducing inflammation–all of which might affect osmoregulatory function during transition between freshwater and marine environments. We used genetic barcoding to identify acanthocephalans in the intestines of wild Irish Atlantic salmon (Salmo salar L.) smolts as being the recently taxonomically resurrected species Pomphorhynchus tereticollis. We then investigated whether natural infection intensities of this parasite were associated with reduced osmoregulatory performance, as measured by plasma chloride concentrations, or potentially elevated stress, as measured by blood glucose, of hosts in freshwater or saltwater environments (24 or 72 h in ∼26PPT salt water, reflecting salinities of coastal waters through which smolts migrate). Although infection prevalence was high amongst sampled smolts, no associations were found within or across treatment groups between parasite abundance and plasma chloride concentrations or blood glucose levels. We found no intestinal perforations that would indicate P. tereticollis had recently vacated the intestines of smolts in either of the saltwater groups. Exploratory sampling in the 2 years preceding the experiment indicated that parasite prevalence and abundance are consistently high and comparable to the experimental individuals. Collectively, these results indicate that naturally occurring abundances of P. tereticollis do not reduce osmoregulatory function or affect blood glucose content in fresh water or within 72 h of entering coastal waters, although delayed pathologies affecting marine survival may occur. Future consideration of ecophysiological interactions between anadromous fish hosts and their parasites ... Article in Journal/Newspaper Atlantic salmon Salmo salar Directory of Open Access Journals: DOAJ Articles Frontiers in Ecology and Evolution 9 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
parasite stress osmoregulation anadromy salmonid Pomphorhynchus tereticollis Evolution QH359-425 Ecology QH540-549.5 |
spellingShingle |
parasite stress osmoregulation anadromy salmonid Pomphorhynchus tereticollis Evolution QH359-425 Ecology QH540-549.5 Ross W. Finlay Russell Poole Ger Rogan Eileen Dillane Deirdre Cotter Thomas E. Reed Hyper- and Hypo-Osmoregulatory Performance of Atlantic Salmon (Salmo salar) Smolts Infected With Pomphorhynchus tereticollis (Acanthocephala) |
topic_facet |
parasite stress osmoregulation anadromy salmonid Pomphorhynchus tereticollis Evolution QH359-425 Ecology QH540-549.5 |
description |
Migratory species must cope with different parasite communities in different environments, but little is known about the ecophysiological effects of parasites on migratory performance. Some species/strains of acanthocephalan parasites in the genus Pomphorhynchus use anadromous salmonids as preferred definitive hosts, perforating the intestines, destroying mucosa and inducing inflammation–all of which might affect osmoregulatory function during transition between freshwater and marine environments. We used genetic barcoding to identify acanthocephalans in the intestines of wild Irish Atlantic salmon (Salmo salar L.) smolts as being the recently taxonomically resurrected species Pomphorhynchus tereticollis. We then investigated whether natural infection intensities of this parasite were associated with reduced osmoregulatory performance, as measured by plasma chloride concentrations, or potentially elevated stress, as measured by blood glucose, of hosts in freshwater or saltwater environments (24 or 72 h in ∼26PPT salt water, reflecting salinities of coastal waters through which smolts migrate). Although infection prevalence was high amongst sampled smolts, no associations were found within or across treatment groups between parasite abundance and plasma chloride concentrations or blood glucose levels. We found no intestinal perforations that would indicate P. tereticollis had recently vacated the intestines of smolts in either of the saltwater groups. Exploratory sampling in the 2 years preceding the experiment indicated that parasite prevalence and abundance are consistently high and comparable to the experimental individuals. Collectively, these results indicate that naturally occurring abundances of P. tereticollis do not reduce osmoregulatory function or affect blood glucose content in fresh water or within 72 h of entering coastal waters, although delayed pathologies affecting marine survival may occur. Future consideration of ecophysiological interactions between anadromous fish hosts and their parasites ... |
format |
Article in Journal/Newspaper |
author |
Ross W. Finlay Russell Poole Ger Rogan Eileen Dillane Deirdre Cotter Thomas E. Reed |
author_facet |
Ross W. Finlay Russell Poole Ger Rogan Eileen Dillane Deirdre Cotter Thomas E. Reed |
author_sort |
Ross W. Finlay |
title |
Hyper- and Hypo-Osmoregulatory Performance of Atlantic Salmon (Salmo salar) Smolts Infected With Pomphorhynchus tereticollis (Acanthocephala) |
title_short |
Hyper- and Hypo-Osmoregulatory Performance of Atlantic Salmon (Salmo salar) Smolts Infected With Pomphorhynchus tereticollis (Acanthocephala) |
title_full |
Hyper- and Hypo-Osmoregulatory Performance of Atlantic Salmon (Salmo salar) Smolts Infected With Pomphorhynchus tereticollis (Acanthocephala) |
title_fullStr |
Hyper- and Hypo-Osmoregulatory Performance of Atlantic Salmon (Salmo salar) Smolts Infected With Pomphorhynchus tereticollis (Acanthocephala) |
title_full_unstemmed |
Hyper- and Hypo-Osmoregulatory Performance of Atlantic Salmon (Salmo salar) Smolts Infected With Pomphorhynchus tereticollis (Acanthocephala) |
title_sort |
hyper- and hypo-osmoregulatory performance of atlantic salmon (salmo salar) smolts infected with pomphorhynchus tereticollis (acanthocephala) |
publisher |
Frontiers Media S.A. |
publishDate |
2021 |
url |
https://doi.org/10.3389/fevo.2021.689233 https://doaj.org/article/cbcc98e55dd84a88bc637d046608cc10 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Frontiers in Ecology and Evolution, Vol 9 (2021) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fevo.2021.689233/full https://doaj.org/toc/2296-701X 2296-701X doi:10.3389/fevo.2021.689233 https://doaj.org/article/cbcc98e55dd84a88bc637d046608cc10 |
op_doi |
https://doi.org/10.3389/fevo.2021.689233 |
container_title |
Frontiers in Ecology and Evolution |
container_volume |
9 |
_version_ |
1766362323915636736 |