Temperature and predator-mediated regulation of plasma cortisol and brain gene expression in juvenile brown trout (Salmo trutta)
Abstract Background Temperature affects many aspects of performance in poikilotherms, including how prey respond when encountering predators. Studies of anti-predator responses in fish mainly have focused on behaviour, whereas physiological responses regulated through the hypothalamic-pituitary-inte...
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ftdoajarticles:oai:doaj.org/article:f67bea97d64f4b6392bf2080972b3110 2023-05-15T15:47:16+02:00 Temperature and predator-mediated regulation of plasma cortisol and brain gene expression in juvenile brown trout (Salmo trutta) Karl Filipsson Eva Bergman Larry Greenberg Martin Österling Johan Watz Ann Erlandsson 2020-08-01T00:00:00Z https://doi.org/10.1186/s12983-020-00372-y https://doaj.org/article/f67bea97d64f4b6392bf2080972b3110 EN eng BMC http://link.springer.com/article/10.1186/s12983-020-00372-y https://doaj.org/toc/1742-9994 doi:10.1186/s12983-020-00372-y 1742-9994 https://doaj.org/article/f67bea97d64f4b6392bf2080972b3110 Frontiers in Zoology, Vol 17, Iss 1, Pp 1-10 (2020) Anti-predator Burbot Climate change HPI axis mRNA Salmonid Zoology QL1-991 article 2020 ftdoajarticles https://doi.org/10.1186/s12983-020-00372-y 2022-12-31T01:44:08Z Abstract Background Temperature affects many aspects of performance in poikilotherms, including how prey respond when encountering predators. Studies of anti-predator responses in fish mainly have focused on behaviour, whereas physiological responses regulated through the hypothalamic-pituitary-interrenal axis have received little attention. We examined plasma cortisol and mRNA levels of stress-related genes in juvenile brown trout (Salmo trutta) at 3 and 8 °C in the presence and absence of a piscivorous fish (burbot, Lota lota). Results A redundancy analysis revealed that both water temperature and the presence of the predator explained a significant amount of the observed variation in cortisol and mRNA levels (11.4 and 2.8%, respectively). Trout had higher cortisol levels in the presence than in the absence of the predator. Analyses of individual gene expressions revealed that trout had significantly higher mRNA levels for 11 of the 16 examined genes at 3 than at 8 °C, and for one gene (retinol-binding protein 1), mRNA levels were higher in the presence than in the absence of the predator. Moreover, we found interaction effects between temperature and predator presence for two genes that code for serotonin and glucocorticoid receptors. Conclusions Our results suggest that piscivorous fish elicit primary stress responses in juvenile salmonids and that some of these responses may be temperature dependent. In addition, this study emphasizes the strong temperature dependence of primary stress responses in poikilotherms, with possible implications for a warming climate. Article in Journal/Newspaper Burbot Lota lota lota Directory of Open Access Journals: DOAJ Articles Frontiers in Zoology 17 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Anti-predator Burbot Climate change HPI axis mRNA Salmonid Zoology QL1-991 |
spellingShingle |
Anti-predator Burbot Climate change HPI axis mRNA Salmonid Zoology QL1-991 Karl Filipsson Eva Bergman Larry Greenberg Martin Österling Johan Watz Ann Erlandsson Temperature and predator-mediated regulation of plasma cortisol and brain gene expression in juvenile brown trout (Salmo trutta) |
topic_facet |
Anti-predator Burbot Climate change HPI axis mRNA Salmonid Zoology QL1-991 |
description |
Abstract Background Temperature affects many aspects of performance in poikilotherms, including how prey respond when encountering predators. Studies of anti-predator responses in fish mainly have focused on behaviour, whereas physiological responses regulated through the hypothalamic-pituitary-interrenal axis have received little attention. We examined plasma cortisol and mRNA levels of stress-related genes in juvenile brown trout (Salmo trutta) at 3 and 8 °C in the presence and absence of a piscivorous fish (burbot, Lota lota). Results A redundancy analysis revealed that both water temperature and the presence of the predator explained a significant amount of the observed variation in cortisol and mRNA levels (11.4 and 2.8%, respectively). Trout had higher cortisol levels in the presence than in the absence of the predator. Analyses of individual gene expressions revealed that trout had significantly higher mRNA levels for 11 of the 16 examined genes at 3 than at 8 °C, and for one gene (retinol-binding protein 1), mRNA levels were higher in the presence than in the absence of the predator. Moreover, we found interaction effects between temperature and predator presence for two genes that code for serotonin and glucocorticoid receptors. Conclusions Our results suggest that piscivorous fish elicit primary stress responses in juvenile salmonids and that some of these responses may be temperature dependent. In addition, this study emphasizes the strong temperature dependence of primary stress responses in poikilotherms, with possible implications for a warming climate. |
format |
Article in Journal/Newspaper |
author |
Karl Filipsson Eva Bergman Larry Greenberg Martin Österling Johan Watz Ann Erlandsson |
author_facet |
Karl Filipsson Eva Bergman Larry Greenberg Martin Österling Johan Watz Ann Erlandsson |
author_sort |
Karl Filipsson |
title |
Temperature and predator-mediated regulation of plasma cortisol and brain gene expression in juvenile brown trout (Salmo trutta) |
title_short |
Temperature and predator-mediated regulation of plasma cortisol and brain gene expression in juvenile brown trout (Salmo trutta) |
title_full |
Temperature and predator-mediated regulation of plasma cortisol and brain gene expression in juvenile brown trout (Salmo trutta) |
title_fullStr |
Temperature and predator-mediated regulation of plasma cortisol and brain gene expression in juvenile brown trout (Salmo trutta) |
title_full_unstemmed |
Temperature and predator-mediated regulation of plasma cortisol and brain gene expression in juvenile brown trout (Salmo trutta) |
title_sort |
temperature and predator-mediated regulation of plasma cortisol and brain gene expression in juvenile brown trout (salmo trutta) |
publisher |
BMC |
publishDate |
2020 |
url |
https://doi.org/10.1186/s12983-020-00372-y https://doaj.org/article/f67bea97d64f4b6392bf2080972b3110 |
genre |
Burbot Lota lota lota |
genre_facet |
Burbot Lota lota lota |
op_source |
Frontiers in Zoology, Vol 17, Iss 1, Pp 1-10 (2020) |
op_relation |
http://link.springer.com/article/10.1186/s12983-020-00372-y https://doaj.org/toc/1742-9994 doi:10.1186/s12983-020-00372-y 1742-9994 https://doaj.org/article/f67bea97d64f4b6392bf2080972b3110 |
op_doi |
https://doi.org/10.1186/s12983-020-00372-y |
container_title |
Frontiers in Zoology |
container_volume |
17 |
container_issue |
1 |
_version_ |
1766382052631904256 |