Cercariae of a Bird Schistosome Follow a Similar Emergence Pattern under Different Subarctic Conditions: First Experimental Study
The emergence of cercariae from infected mollusks is considered one of the most important adaptive strategies for maintaining the trematode life cycle. Short transmission opportunities of cercariae are often compensated by periodic daily rhythms in the cercarial release. However, there are virtually...
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Online Access: | https://hdl.handle.net/10037/26241 https://doi.org/10.3390/pathogens11060647 |
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ftunivtroemsoe:oai:munin.uit.no:10037/26241 2023-05-15T18:28:07+02:00 Cercariae of a Bird Schistosome Follow a Similar Emergence Pattern under Different Subarctic Conditions: First Experimental Study Soldánová, Miroslava Born-Torrijos, Ana Kristoffersen, Roar Knudsen, Rune Amundsen, Per-Arne Scholz, Tomas 2022-06-03 https://hdl.handle.net/10037/26241 https://doi.org/10.3390/pathogens11060647 eng eng MDPI Pathogens FRIDAID 2029833 doi:10.3390/pathogens11060647 2076-0817 https://hdl.handle.net/10037/26241 openAccess Copyright 2022 The Author(s) Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2022 ftunivtroemsoe https://doi.org/10.3390/pathogens11060647 2022-08-17T23:00:01Z The emergence of cercariae from infected mollusks is considered one of the most important adaptive strategies for maintaining the trematode life cycle. Short transmission opportunities of cercariae are often compensated by periodic daily rhythms in the cercarial release. However, there are virtually no data on the cercarial emergence of bird schistosomes from freshwater ecosystems in northern latitudes. We investigated the daily cercarial emergence rhythms of the bird schistosome Trichobilharzia sp. “peregra” from the snail host Radix balthica in a subarctic lake under both natural and laboratory seasonal conditions. We demonstrated a circadian rhythm with the highest emergence during the morning hours, being seasonally independent of the photo- and thermo-period regimes of subarctic summer and autumn, as well as relatively high production of cercariae at low temperatures typical of northern environments. These patterns were consistent under both field and laboratory conditions. While light intensity triggered and prolonged cercarial emergence, the temperature had little effect on cercarial rhythms but regulated seasonal output rates. This suggests an adaptive strategy of bird schistosomes to compensate for the narrow transmission window. Our results fill a gap in our knowledge of the transmission dynamics and success of bird schistosomes under high latitude conditions that may serve as a basis for elucidating future potential risks and implementing control measures related to the spread of cercarial dermatitis due to global warming. Article in Journal/Newspaper Subarctic University of Tromsø: Munin Open Research Archive Pathogens 11 6 647 |
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Open Polar |
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University of Tromsø: Munin Open Research Archive |
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ftunivtroemsoe |
language |
English |
description |
The emergence of cercariae from infected mollusks is considered one of the most important adaptive strategies for maintaining the trematode life cycle. Short transmission opportunities of cercariae are often compensated by periodic daily rhythms in the cercarial release. However, there are virtually no data on the cercarial emergence of bird schistosomes from freshwater ecosystems in northern latitudes. We investigated the daily cercarial emergence rhythms of the bird schistosome Trichobilharzia sp. “peregra” from the snail host Radix balthica in a subarctic lake under both natural and laboratory seasonal conditions. We demonstrated a circadian rhythm with the highest emergence during the morning hours, being seasonally independent of the photo- and thermo-period regimes of subarctic summer and autumn, as well as relatively high production of cercariae at low temperatures typical of northern environments. These patterns were consistent under both field and laboratory conditions. While light intensity triggered and prolonged cercarial emergence, the temperature had little effect on cercarial rhythms but regulated seasonal output rates. This suggests an adaptive strategy of bird schistosomes to compensate for the narrow transmission window. Our results fill a gap in our knowledge of the transmission dynamics and success of bird schistosomes under high latitude conditions that may serve as a basis for elucidating future potential risks and implementing control measures related to the spread of cercarial dermatitis due to global warming. |
format |
Article in Journal/Newspaper |
author |
Soldánová, Miroslava Born-Torrijos, Ana Kristoffersen, Roar Knudsen, Rune Amundsen, Per-Arne Scholz, Tomas |
spellingShingle |
Soldánová, Miroslava Born-Torrijos, Ana Kristoffersen, Roar Knudsen, Rune Amundsen, Per-Arne Scholz, Tomas Cercariae of a Bird Schistosome Follow a Similar Emergence Pattern under Different Subarctic Conditions: First Experimental Study |
author_facet |
Soldánová, Miroslava Born-Torrijos, Ana Kristoffersen, Roar Knudsen, Rune Amundsen, Per-Arne Scholz, Tomas |
author_sort |
Soldánová, Miroslava |
title |
Cercariae of a Bird Schistosome Follow a Similar Emergence Pattern under Different Subarctic Conditions: First Experimental Study |
title_short |
Cercariae of a Bird Schistosome Follow a Similar Emergence Pattern under Different Subarctic Conditions: First Experimental Study |
title_full |
Cercariae of a Bird Schistosome Follow a Similar Emergence Pattern under Different Subarctic Conditions: First Experimental Study |
title_fullStr |
Cercariae of a Bird Schistosome Follow a Similar Emergence Pattern under Different Subarctic Conditions: First Experimental Study |
title_full_unstemmed |
Cercariae of a Bird Schistosome Follow a Similar Emergence Pattern under Different Subarctic Conditions: First Experimental Study |
title_sort |
cercariae of a bird schistosome follow a similar emergence pattern under different subarctic conditions: first experimental study |
publisher |
MDPI |
publishDate |
2022 |
url |
https://hdl.handle.net/10037/26241 https://doi.org/10.3390/pathogens11060647 |
genre |
Subarctic |
genre_facet |
Subarctic |
op_relation |
Pathogens FRIDAID 2029833 doi:10.3390/pathogens11060647 2076-0817 https://hdl.handle.net/10037/26241 |
op_rights |
openAccess Copyright 2022 The Author(s) |
op_doi |
https://doi.org/10.3390/pathogens11060647 |
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Pathogens |
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11 |
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6 |
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647 |
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1766210469848154112 |