Data from: Maternal effects in vulnerability to eye-parasites and correlations between behaviour and parasitism in juvenile Arctic charr
Hatchery-reared fish show high mortalities after release to the wild environment. Explanations for this include potentially predetermined genetics, behavioural and physiological acclimation to fish farm environments, and increased vulnerability to predation and parasitism in the wild. We studied vul...
Main Authors: | , , , , |
---|---|
Language: | unknown |
Published: |
2021
|
Subjects: | |
Online Access: | https://doi.org/10.5061/dryad.8c1vd https://erepo.uef.fi/handle/123456789/25622 |
id |
ftuniveasternfin:oai:erepo.uef.fi:123456789/25622 |
---|---|
record_format |
openpolar |
spelling |
ftuniveasternfin:oai:erepo.uef.fi:123456789/25622 2023-05-15T14:30:06+02:00 Data from: Maternal effects in vulnerability to eye-parasites and correlations between behaviour and parasitism in juvenile Arctic charr Kortet, Raine,University of Eastern Finland Lautala, Tiina,University of Helsinki Kekäläinen, Jukka,University of Eastern Finland Taskinen, Jouni,University of Jyväskylä Hirvonen, Heikki,University of Helsinki 2021-06-18T02:05:11Z https://doi.org/10.5061/dryad.8c1vd https://erepo.uef.fi/handle/123456789/25622 unknown https://zenodo.org/record/4971922 10.5061/dryad.8c1vd doi:10.5061/dryad.8c1vd https://erepo.uef.fi/handle/123456789/25622 2021 ftuniveasternfin https://doi.org/10.5061/dryad.8c1vd 2022-12-11T06:54:53Z Hatchery-reared fish show high mortalities after release to the wild environment. Explanations for this include potentially predetermined genetics, behavioural and physiological acclimation to fish farm environments, and increased vulnerability to predation and parasitism in the wild. We studied vulnerability to Diplostomum spp. parasites (load of eye-flukes in the lenses), immune defence (relative spleen size) and anti-predator behaviours (approaches toward predator odour, freezing, and swimming activity) in hatchery-reared juvenile Arctic charr (Salvelinus alpinus) using a nested mating design. Fish were exposed to eye-fluke larvae via the incoming water at the hatchery. Fish size was positively associated with parasite load, but we did not find any relationship between relative spleen size and parasitism. The offspring of different females showed significant variation in their parasite load within sires, implying a dam effect in the vulnerability to parasites. However, the family background did not have any effect on spleen size. In the mean sire level over dams, the fish from the bolder (actively swimming) families in the predator trials suffered higher loads of eye-flukes than those from more cautiously behaving families. Thus, the results indicate potentially maternally inherited differences in vulnerability to eye-fluke parasites, and that the vulnerability to parasites and behavioural activity are positively associated with each other at the sire level. This could lead to artificial and unintentional selection for increased vulnerability to both parasitism and predation if these traits are favoured in fish farm environments. Other/Unknown Material Arctic charr Arctic Salvelinus alpinus UEF eRepository (University of Eastern Finland) Arctic |
institution |
Open Polar |
collection |
UEF eRepository (University of Eastern Finland) |
op_collection_id |
ftuniveasternfin |
language |
unknown |
description |
Hatchery-reared fish show high mortalities after release to the wild environment. Explanations for this include potentially predetermined genetics, behavioural and physiological acclimation to fish farm environments, and increased vulnerability to predation and parasitism in the wild. We studied vulnerability to Diplostomum spp. parasites (load of eye-flukes in the lenses), immune defence (relative spleen size) and anti-predator behaviours (approaches toward predator odour, freezing, and swimming activity) in hatchery-reared juvenile Arctic charr (Salvelinus alpinus) using a nested mating design. Fish were exposed to eye-fluke larvae via the incoming water at the hatchery. Fish size was positively associated with parasite load, but we did not find any relationship between relative spleen size and parasitism. The offspring of different females showed significant variation in their parasite load within sires, implying a dam effect in the vulnerability to parasites. However, the family background did not have any effect on spleen size. In the mean sire level over dams, the fish from the bolder (actively swimming) families in the predator trials suffered higher loads of eye-flukes than those from more cautiously behaving families. Thus, the results indicate potentially maternally inherited differences in vulnerability to eye-fluke parasites, and that the vulnerability to parasites and behavioural activity are positively associated with each other at the sire level. This could lead to artificial and unintentional selection for increased vulnerability to both parasitism and predation if these traits are favoured in fish farm environments. |
author |
Kortet, Raine,University of Eastern Finland Lautala, Tiina,University of Helsinki Kekäläinen, Jukka,University of Eastern Finland Taskinen, Jouni,University of Jyväskylä Hirvonen, Heikki,University of Helsinki |
spellingShingle |
Kortet, Raine,University of Eastern Finland Lautala, Tiina,University of Helsinki Kekäläinen, Jukka,University of Eastern Finland Taskinen, Jouni,University of Jyväskylä Hirvonen, Heikki,University of Helsinki Data from: Maternal effects in vulnerability to eye-parasites and correlations between behaviour and parasitism in juvenile Arctic charr |
author_facet |
Kortet, Raine,University of Eastern Finland Lautala, Tiina,University of Helsinki Kekäläinen, Jukka,University of Eastern Finland Taskinen, Jouni,University of Jyväskylä Hirvonen, Heikki,University of Helsinki |
author_sort |
Kortet, Raine,University of Eastern Finland |
title |
Data from: Maternal effects in vulnerability to eye-parasites and correlations between behaviour and parasitism in juvenile Arctic charr |
title_short |
Data from: Maternal effects in vulnerability to eye-parasites and correlations between behaviour and parasitism in juvenile Arctic charr |
title_full |
Data from: Maternal effects in vulnerability to eye-parasites and correlations between behaviour and parasitism in juvenile Arctic charr |
title_fullStr |
Data from: Maternal effects in vulnerability to eye-parasites and correlations between behaviour and parasitism in juvenile Arctic charr |
title_full_unstemmed |
Data from: Maternal effects in vulnerability to eye-parasites and correlations between behaviour and parasitism in juvenile Arctic charr |
title_sort |
data from: maternal effects in vulnerability to eye-parasites and correlations between behaviour and parasitism in juvenile arctic charr |
publishDate |
2021 |
url |
https://doi.org/10.5061/dryad.8c1vd https://erepo.uef.fi/handle/123456789/25622 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic charr Arctic Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Salvelinus alpinus |
op_relation |
https://zenodo.org/record/4971922 10.5061/dryad.8c1vd doi:10.5061/dryad.8c1vd https://erepo.uef.fi/handle/123456789/25622 |
op_doi |
https://doi.org/10.5061/dryad.8c1vd |
_version_ |
1766304024064163840 |