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Does air-breathing meet metabolic demands of the juvenile snakehead, Channa argus, in multiple conditions
The objective of this study was to examine how the respiratory metabolism of the snakehead Channa argus changed when it shifted from breathing water to breathing air, and how increased metabolic demands caused by temperature, feeding, and exhaustive exercise affect its survival in air. The results d...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Company of Biologists Ltd
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5450324/ https://www.ncbi.nlm.nih.gov/pubmed/28396489 http://dx.doi.org/10.1242/bio.024448 |
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author | Li, Yongli Lv, Xiao Zhou, Jing Shi, Chenchen Duan, Ting Luo, Yiping |
author_facet | Li, Yongli Lv, Xiao Zhou, Jing Shi, Chenchen Duan, Ting Luo, Yiping |
author_sort | Li, Yongli |
collection | PubMed |
description | The objective of this study was to examine how the respiratory metabolism of the snakehead Channa argus changed when it shifted from breathing water to breathing air, and how increased metabolic demands caused by temperature, feeding, and exhaustive exercise affect its survival in air. The results demonstrated that the oxygen consumption rate (MO(2)) of the snakehead was lower for aerial respiration than aquatic respiration by 12.1, 24.5 and 20.4% at 20, 25, and 30°C, respectively. Survival time was significantly shortened with increasing temperature and was negatively correlated with the resting MO(2) in air (MO(2Air)). No obvious feeding metabolic response was observed in the snakeheads fed at 1% and 3% body mass levels while breathing air. The maximum MO(2Air) of the snakehead after exhaustive exercise was significantly higher than the resting MO(2Air) of the control group. The results suggest that the snakehead could survive out of water by breathing air for varying lengths of time, depending on ambient temperature and metabolic demand. Additionally, some degree of metabolic depression occurs in the snakehead when breathing air. The metabolic demand associated with exercise in the snakehead, but not that associated with feeding, can be supported by its capacity for breathing air to some extent. |
format | Online Article Text |
id | pubmed-5450324 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | The Company of Biologists Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-54503242017-06-01 Does air-breathing meet metabolic demands of the juvenile snakehead, Channa argus, in multiple conditions Li, Yongli Lv, Xiao Zhou, Jing Shi, Chenchen Duan, Ting Luo, Yiping Biol Open Research Article The objective of this study was to examine how the respiratory metabolism of the snakehead Channa argus changed when it shifted from breathing water to breathing air, and how increased metabolic demands caused by temperature, feeding, and exhaustive exercise affect its survival in air. The results demonstrated that the oxygen consumption rate (MO(2)) of the snakehead was lower for aerial respiration than aquatic respiration by 12.1, 24.5 and 20.4% at 20, 25, and 30°C, respectively. Survival time was significantly shortened with increasing temperature and was negatively correlated with the resting MO(2) in air (MO(2Air)). No obvious feeding metabolic response was observed in the snakeheads fed at 1% and 3% body mass levels while breathing air. The maximum MO(2Air) of the snakehead after exhaustive exercise was significantly higher than the resting MO(2Air) of the control group. The results suggest that the snakehead could survive out of water by breathing air for varying lengths of time, depending on ambient temperature and metabolic demand. Additionally, some degree of metabolic depression occurs in the snakehead when breathing air. The metabolic demand associated with exercise in the snakehead, but not that associated with feeding, can be supported by its capacity for breathing air to some extent. The Company of Biologists Ltd 2017-04-10 /pmc/articles/PMC5450324/ /pubmed/28396489 http://dx.doi.org/10.1242/bio.024448 Text en © 2017. Published by The Company of Biologists Ltd http://creativecommons.org/licenses/by/3.0This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed. |
spellingShingle | Research Article Li, Yongli Lv, Xiao Zhou, Jing Shi, Chenchen Duan, Ting Luo, Yiping Does air-breathing meet metabolic demands of the juvenile snakehead, Channa argus, in multiple conditions |
title | Does air-breathing meet metabolic demands of the juvenile snakehead, Channa argus, in multiple conditions |
title_full | Does air-breathing meet metabolic demands of the juvenile snakehead, Channa argus, in multiple conditions |
title_fullStr | Does air-breathing meet metabolic demands of the juvenile snakehead, Channa argus, in multiple conditions |
title_full_unstemmed | Does air-breathing meet metabolic demands of the juvenile snakehead, Channa argus, in multiple conditions |
title_short | Does air-breathing meet metabolic demands of the juvenile snakehead, Channa argus, in multiple conditions |
title_sort | does air-breathing meet metabolic demands of the juvenile snakehead, channa argus, in multiple conditions |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5450324/ https://www.ncbi.nlm.nih.gov/pubmed/28396489 http://dx.doi.org/10.1242/bio.024448 |
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