Study on Respiratory Metabolism of Wild Acanthopagrus schlegelii in South China Sea under Different Temperatures and Weights

Xue Feng, Jiangtao Fan, Xueqian Zhao, Pimao Chen

2022

Abstract

Respiratory metabolism is an important part of bioenergy research. The experimental device of indoor closed flowing respiratory metabolism designed and authorized under an invention patent was used to acquire the changes of physiological activity of wild Acanthopagrus schlegelii in the open sea. Specifically, with this device, we conducted respiratory metabolism experiments of wild Acanthopagrus schlegelii in the South China Sea with various sizes (body length 96-122 mm, body weight 9.99-17.36 g) at different temperatures (16-32ºC) and further analyzed the changes of oxygen consumption rate and ammonia excretion rate of Acanthopagrus schlegelii and its metabolic substrates. It could be seen from the results that the changes of water temperature have significant effects on the oxygen consumption rate and ammonia excretion rate of Acanthopagrus schlegelii in the South China Sea. The oxygen consumption rate increases with the rise of water temperature, while the ammonia excretion rate shows a fluctuating increase. Under the same water temperature, the oxygen consumption rate and ammonia excretion rate of Acanthopagrus schlegelii were significantly negatively correlated with weights (P<0.01). Namely, the oxygen consumption rate and ammonia excretion rate of large Acanthopagrus schlegelii are lower than those of small Acanthopagrus schlegelii, and the variation of oxygen consumption rate and ammonia excretion rate of Acanthopagrus schlegelii with different weights conform to the power exponential growth model. The average oxygenconsumption rate and ammonia excretion rate per unit weight of Acanthopagrus schlegelii are 0.11 mg/(g·h) and 4.48 µg/(g·h) respectively. The change of Q10 coefficient of Acanthopagrus schlegelii shows that the Q10 value of oxygen consumption rate per unit weight of Acanthopagrus schlegelii is the minimum of 1.31 within the temperature of 24-28ºC, and the maximum of 1.69 within 16-20ºC. The Q10 value of ammonia excretion rate is the minimum of 1.05 within 28-32ºC, and the maximum of 1.78 within 24-28ºC. The O: N ratio of Acanthopagrus schlegelii in different combinations varies from 15.37 to 44.37. This paper studied the relationship between important environmental factors affecting the respiratory metabolism of Acanthopagrus schlegelii and the metabolism of organisms, which is conducive to a better understanding of the metabolic pattern of Acanthopagrus schlegelii, thus providing basic data for the proliferation and conservation of Acanthopagrus schlegelii resources.

Paper Citation

in Harvard Style

Feng X., Fan J., Zhao X. and Chen P. (2022). Study on Respiratory Metabolism of Wild Acanthopagrus schlegelii in South China Sea under Different Temperatures and Weights. In Proceedings of the 4th International Conference on Biomedical Engineering and Bioinformatics - Volume 1: ICBEB, ISBN 978-989-758-595-1, pages 5-12. DOI: 10.5220/0011175600003443

in Bibtex Style

@conference{icbeb22,
author={Xue Feng and Jiangtao Fan and Xueqian Zhao and Pimao Chen},
title={Study on Respiratory Metabolism of Wild Acanthopagrus schlegelii in South China Sea under Different Temperatures and Weights},
booktitle={Proceedings of the 4th International Conference on Biomedical Engineering and Bioinformatics - Volume 1: ICBEB,},
year={2022},
pages={5-12},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0011175600003443},
isbn={978-989-758-595-1},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 4th International Conference on Biomedical Engineering and Bioinformatics - Volume 1: ICBEB,
TI - Study on Respiratory Metabolism of Wild Acanthopagrus schlegelii in South China Sea under Different Temperatures and Weights
SN - 978-989-758-595-1
AU - Feng X.
AU - Fan J.
AU - Zhao X.
AU - Chen P.
PY - 2022
SP - 5
EP - 12
DO - 10.5220/0011175600003443