Academic Journal
No trout about it: behavioural and transcriptional effects of long-term noise exposure in brook trout (Salvelinus fontinalis)
| Title: | No trout about it: behavioural and transcriptional effects of long-term noise exposure in brook trout (Salvelinus fontinalis) |
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| Authors: | Riley K. Beach, Grace M. Dycha, Alex Wilder, Christina A.D. Semeniuk, Daniel D. Heath, Dennis M. Higgs |
| Source: | Canadian Journal of Fisheries and Aquatic Sciences. 82:1-16 |
| Publisher Information: | Canadian Science Publishing, 2025. |
| Publication Year: | 2025 |
| Description: | Exposure to acute noise sources can lead to negative behavioural outcomes and fitness deficits in fishes, but it is unknown whether fish can habituate to chronic exposures. As underwater noise increases globally, understanding how long-term exposures can affect behavioural, morphological, and transcriptional measures of stress in fish is critical. We tested responses in captive brook trout ( Salvelinus fontinalis) immediately after acute exposure to a noise and after 2 weeks of chronic exposure. Behavioural tests quantified fish movements before, during, and after sound presentation, with morphological and transcriptional changes assessed through ears and whole brains samples, respectively. Pre-control and pre-experimental brook trout exhibited increased swimming distance and velocity, but after the 2-week exposure, post-experimental fish showed no response to noise while the post-control group remained responsive. Post-experimental fish showed significant differences in transcription levels of genes involved in neuroplastic, appetite, and stress responses relative to the other groups. Together these results suggest that while fish may appear unresponsive via behavioural metrics to anthropogenic noises after chronic exposure, they still show significant changes at the transcriptional level with possible long-term effects. |
| Document Type: | Article |
| Language: | English |
| ISSN: | 1205-7533 0706-652X |
| DOI: | 10.1139/cjfas-2024-0288 |
| Rights: | CSP TDM |
| Accession Number: | edsair.doi...........afb5b3b2924d21ab981845e6ccea1a0a |
| Database: | OpenAIRE |
| ISSN: | 12057533 0706652X |
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| DOI: | 10.1139/cjfas-2024-0288 |