The effects of oxygen and temperature on the physiology of hatching stage Atlantic salmon ...
Environmental change and its impact on the form, function and adaptive responses of fish, especially in relation to maternal effects or individual genotype, is of major interest to biologists. Oxygen levels and temperature have profound effects on the physiology of fish, and early developmental stag...
Main Author: | |
---|---|
Format: | Thesis |
Language: | unknown |
Published: |
University Of Tasmania
2023
|
Subjects: | |
Online Access: | https://dx.doi.org/10.25959/23237570 https://figshare.utas.edu.au/articles/thesis/The_effects_of_oxygen_and_temperature_on_the_physiology_of_hatching_stage_Atlantic_salmon/23237570 |
id |
ftdatacite:10.25959/23237570 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.25959/23237570 2023-06-11T04:10:15+02:00 The effects of oxygen and temperature on the physiology of hatching stage Atlantic salmon ... Polymeropoulos, ET 2023 https://dx.doi.org/10.25959/23237570 https://figshare.utas.edu.au/articles/thesis/The_effects_of_oxygen_and_temperature_on_the_physiology_of_hatching_stage_Atlantic_salmon/23237570 unknown University Of Tasmania In Copyright http://rightsstatements.org/vocab/InC/1.0/ article-journal Text ScholarlyArticle Thesis 2023 ftdatacite https://doi.org/10.25959/23237570 2023-06-01T12:12:46Z Environmental change and its impact on the form, function and adaptive responses of fish, especially in relation to maternal effects or individual genotype, is of major interest to biologists. Oxygen levels and temperature have profound effects on the physiology of fish, and early developmental stages are particularly susceptible to environmental challenges. In this thesis the metabolic, cardiorespiratory and cellular stress responses to acute or chronic changes of these variables in Atlantic salmon (Salmo salar) embryos and yolk-sac alevins were investigated. Eggs and alevins matched their metabolic demand to acute changes in oxygen levels without altering cardiorespiratory function unless oxygen reached critically low levels (5 kPa). In contrast, chronic hypoxia (10.5 kPa for 15 days), but not hyperoxia (28 kPa for 15 days) resulted in functional and structural modifications that enabled metabolic rate to return to the normoxic (21 kPa) pre-exposure level while maintained in hypoxia (10.5 kPa); this ... Thesis Atlantic salmon Salmo salar DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
description |
Environmental change and its impact on the form, function and adaptive responses of fish, especially in relation to maternal effects or individual genotype, is of major interest to biologists. Oxygen levels and temperature have profound effects on the physiology of fish, and early developmental stages are particularly susceptible to environmental challenges. In this thesis the metabolic, cardiorespiratory and cellular stress responses to acute or chronic changes of these variables in Atlantic salmon (Salmo salar) embryos and yolk-sac alevins were investigated. Eggs and alevins matched their metabolic demand to acute changes in oxygen levels without altering cardiorespiratory function unless oxygen reached critically low levels (5 kPa). In contrast, chronic hypoxia (10.5 kPa for 15 days), but not hyperoxia (28 kPa for 15 days) resulted in functional and structural modifications that enabled metabolic rate to return to the normoxic (21 kPa) pre-exposure level while maintained in hypoxia (10.5 kPa); this ... |
format |
Thesis |
author |
Polymeropoulos, ET |
spellingShingle |
Polymeropoulos, ET The effects of oxygen and temperature on the physiology of hatching stage Atlantic salmon ... |
author_facet |
Polymeropoulos, ET |
author_sort |
Polymeropoulos, ET |
title |
The effects of oxygen and temperature on the physiology of hatching stage Atlantic salmon ... |
title_short |
The effects of oxygen and temperature on the physiology of hatching stage Atlantic salmon ... |
title_full |
The effects of oxygen and temperature on the physiology of hatching stage Atlantic salmon ... |
title_fullStr |
The effects of oxygen and temperature on the physiology of hatching stage Atlantic salmon ... |
title_full_unstemmed |
The effects of oxygen and temperature on the physiology of hatching stage Atlantic salmon ... |
title_sort |
effects of oxygen and temperature on the physiology of hatching stage atlantic salmon ... |
publisher |
University Of Tasmania |
publishDate |
2023 |
url |
https://dx.doi.org/10.25959/23237570 https://figshare.utas.edu.au/articles/thesis/The_effects_of_oxygen_and_temperature_on_the_physiology_of_hatching_stage_Atlantic_salmon/23237570 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_rights |
In Copyright http://rightsstatements.org/vocab/InC/1.0/ |
op_doi |
https://doi.org/10.25959/23237570 |
_version_ |
1768384560809115648 |