Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.resp.2007.06.015
Title: Control of breathing in African lungfish (Protopterus dolloi): A comparison of aquatic and cocooned (terrestrialized) animals
Authors: Perry, S.F.
Euverman, R.
Wang, T.
Loong, A.M.
Chew, S.F.
Ip, Y.K. 
Gilmour, K.M.
Keywords: Aestivation
Air-breathing fish
Hypercapnia
Hyperoxia
Hypoxia
Lungfish
Metabolic rate
Respiration
Ventilation
Issue Date: 1-Jan-2008
Citation: Perry, S.F., Euverman, R., Wang, T., Loong, A.M., Chew, S.F., Ip, Y.K., Gilmour, K.M. (2008-01-01). Control of breathing in African lungfish (Protopterus dolloi): A comparison of aquatic and cocooned (terrestrialized) animals. Respiratory Physiology and Neurobiology 160 (1) : 8-17. ScholarBank@NUS Repository. https://doi.org/10.1016/j.resp.2007.06.015
Abstract: African lungfish, Protopterus dolloi exhibited constant rates of O2 consumption before (0.95 ± 0.07 mmol kg-1 h-1), during (1.21 ± 0.32 mmol kg-1 h-1) and after (1.14 ± 0.14 mmol kg-1 h-1) extended periods (1-2 months) of terrestrialization while cocooned. Although a breathing event in terrestrialized fish consisted of multiple bouts of inspiration and expiration in rapid succession, the mean frequency of pulmonary breathing events was unaltered in the terrestrialized fish (16.7 ± 1.4 h-1 versus 20.1 ± 4.9 h-1 in the aquatic and terrestrialized fish, respectively). Hypoxia (∼20 mmHg) increased the frequency of breathing events by 16 and 23 h-1 in the aquatic and terrestrialized fish, respectively. Hyperoxia (∼550 mmHg) decreased breathing event frequency by 10 and 15 h-1 in the aquatic and terrestrialized animals. Aquatic hypercapnia (∼37.5 mmHg) increased pulmonary breathing frequency (from 15.3 ± 2.3 to 28.7 ± 5.4 h-1) in free swimming lungfish, whereas aerial hypercapnia was without effect in aquatic or terrestrialized fish. © 2007 Elsevier B.V. All rights reserved.
Source Title: Respiratory Physiology and Neurobiology
URI: http://scholarbank.nus.edu.sg/handle/10635/100335
ISSN: 15699048
DOI: 10.1016/j.resp.2007.06.015
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