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Effects of temperature on acid-base regulation, gill ventilation and air breathing in the clown knifefish, Chitala ornata

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

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Effects of temperature on acid-base regulation, gill ventilation and air breathing in the clown knifefish, Chitala ornata. / Gam, Le Thi Hong; Huong, Do Thi Thanh; Tuong, Dang Diem et al.

In: Journal of Experimental Biology, Vol. 223, No. 4, 216481, 01.01.2020.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Harvard

Gam, LTH, Huong, DTT, Tuong, DD, Phuong, NT, Jensen, FB, Wang, T & Bayley, M 2020, 'Effects of temperature on acid-base regulation, gill ventilation and air breathing in the clown knifefish, Chitala ornata', Journal of Experimental Biology, vol. 223, no. 4, 216481. https://doi.org/10.1242/jeb.216481

APA

Gam, L. T. H., Huong, D. T. T., Tuong, D. D., Phuong, N. T., Jensen, F. B., Wang, T., & Bayley, M. (2020). Effects of temperature on acid-base regulation, gill ventilation and air breathing in the clown knifefish, Chitala ornata. Journal of Experimental Biology, 223(4), [216481]. https://doi.org/10.1242/jeb.216481

CBE

Gam LTH, Huong DTT, Tuong DD, Phuong NT, Jensen FB, Wang T, Bayley M. 2020. Effects of temperature on acid-base regulation, gill ventilation and air breathing in the clown knifefish, Chitala ornata. Journal of Experimental Biology. 223(4):Article 216481. https://doi.org/10.1242/jeb.216481

MLA

Vancouver

Gam LTH, Huong DTT, Tuong DD, Phuong NT, Jensen FB, Wang T et al. Effects of temperature on acid-base regulation, gill ventilation and air breathing in the clown knifefish, Chitala ornata. Journal of Experimental Biology. 2020 Jan 1;223(4):216481. doi: 10.1242/jeb.216481

Author

Gam, Le Thi Hong ; Huong, Do Thi Thanh ; Tuong, Dang Diem et al. / Effects of temperature on acid-base regulation, gill ventilation and air breathing in the clown knifefish, Chitala ornata. In: Journal of Experimental Biology. 2020 ; Vol. 223, No. 4.

Bibtex

@article{c0db143dfb654e7cafd3dba606acb96a,
title = "Effects of temperature on acid-base regulation, gill ventilation and air breathing in the clown knifefish, Chitala ornata",
abstract = "Chitala ornata is a facultative air-breathing fish, which at low temperatures shows an arterial PCO2 (PaCO2) level only slightly elevated above that of water breathers. By holding fish with indwelling catheters at temperatures from 25 to 36°C and measuring blood gasses, we show that this animal follows the ubiquitous poikilotherm pattern of reducing arterial pH with increasing temperature. Surprisingly, the temperature increase caused an elevation of PaCO2 from 5 to 12 mmHg while the plasma bicarbonate concentration remained constant at around 8 mmol l−1. The temperature increase also gave rise to a larger fractional increase in air breathing than in gill ventilation frequency. These findings suggest that air breathing, and hence the partitioning of gas exchange, is to some extent regulated by acid-base status in air-breathing fish and that these bimodal breathers will be increasingly likely to adopt respiratory pH control as temperature rises, providing an interesting avenue for future research.",
keywords = "Air-breathing fish, Gas exchange partitioning, PH regulation",
author = "Gam, {Le Thi Hong} and Huong, {Do Thi Thanh} and Tuong, {Dang Diem} and Phuong, {Nguyen Thanh} and Jensen, {Frank Bo} and Tobias Wang and Mark Bayley",
year = "2020",
month = jan,
day = "1",
doi = "10.1242/jeb.216481",
language = "English",
volume = "223",
journal = "The Journal of Experimental Biology",
issn = "0022-0949",
publisher = "The/Company of Biologists Ltd.",
number = "4",

}

RIS

TY - JOUR

T1 - Effects of temperature on acid-base regulation, gill ventilation and air breathing in the clown knifefish, Chitala ornata

AU - Gam, Le Thi Hong

AU - Huong, Do Thi Thanh

AU - Tuong, Dang Diem

AU - Phuong, Nguyen Thanh

AU - Jensen, Frank Bo

AU - Wang, Tobias

AU - Bayley, Mark

PY - 2020/1/1

Y1 - 2020/1/1

N2 - Chitala ornata is a facultative air-breathing fish, which at low temperatures shows an arterial PCO2 (PaCO2) level only slightly elevated above that of water breathers. By holding fish with indwelling catheters at temperatures from 25 to 36°C and measuring blood gasses, we show that this animal follows the ubiquitous poikilotherm pattern of reducing arterial pH with increasing temperature. Surprisingly, the temperature increase caused an elevation of PaCO2 from 5 to 12 mmHg while the plasma bicarbonate concentration remained constant at around 8 mmol l−1. The temperature increase also gave rise to a larger fractional increase in air breathing than in gill ventilation frequency. These findings suggest that air breathing, and hence the partitioning of gas exchange, is to some extent regulated by acid-base status in air-breathing fish and that these bimodal breathers will be increasingly likely to adopt respiratory pH control as temperature rises, providing an interesting avenue for future research.

AB - Chitala ornata is a facultative air-breathing fish, which at low temperatures shows an arterial PCO2 (PaCO2) level only slightly elevated above that of water breathers. By holding fish with indwelling catheters at temperatures from 25 to 36°C and measuring blood gasses, we show that this animal follows the ubiquitous poikilotherm pattern of reducing arterial pH with increasing temperature. Surprisingly, the temperature increase caused an elevation of PaCO2 from 5 to 12 mmHg while the plasma bicarbonate concentration remained constant at around 8 mmol l−1. The temperature increase also gave rise to a larger fractional increase in air breathing than in gill ventilation frequency. These findings suggest that air breathing, and hence the partitioning of gas exchange, is to some extent regulated by acid-base status in air-breathing fish and that these bimodal breathers will be increasingly likely to adopt respiratory pH control as temperature rises, providing an interesting avenue for future research.

KW - Air-breathing fish

KW - Gas exchange partitioning

KW - PH regulation

UR - http://www.scopus.com/inward/record.url?scp=85082035746&partnerID=8YFLogxK

U2 - 10.1242/jeb.216481

DO - 10.1242/jeb.216481

M3 - Journal article

C2 - 32001546

AN - SCOPUS:85082035746

VL - 223

JO - The Journal of Experimental Biology

JF - The Journal of Experimental Biology

SN - 0022-0949

IS - 4

M1 - 216481

ER -