Gas exchange and heart rate in the harbour porpoise, Phocoena phocoena
The respiratory physiology, heart rates and metabolic rates of two captive juvenile male harbour porpoises (both 28 kg) were measured using a rapid-response respiratory gas analysis system in the laboratory. Breath-hold durations in the laboratory (12 +/- 0.3 s, mean +/- SEM) were shorter than field...
Main Authors: | , , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2000
|
Subjects: | |
Online Access: | https://orbit.dtu.dk/en/publications/75b5057f-1607-4035-a5ed-d9c7a64929a9 |
id |
ftdtupubl:oai:pure.atira.dk:publications/75b5057f-1607-4035-a5ed-d9c7a64929a9 |
---|---|
record_format |
openpolar |
spelling |
ftdtupubl:oai:pure.atira.dk:publications/75b5057f-1607-4035-a5ed-d9c7a64929a9 2024-02-11T10:04:33+01:00 Gas exchange and heart rate in the harbour porpoise, Phocoena phocoena Reed, J.Z. Chambers, C. Hunter, C.J. Lockyer, C. Kastelein, R. Fedak, M.A. Boutilier, R.G. 2000 https://orbit.dtu.dk/en/publications/75b5057f-1607-4035-a5ed-d9c7a64929a9 eng eng https://orbit.dtu.dk/en/publications/75b5057f-1607-4035-a5ed-d9c7a64929a9 info:eu-repo/semantics/restrictedAccess Reed , J Z , Chambers , C , Hunter , C J , Lockyer , C , Kastelein , R , Fedak , M A & Boutilier , R G 2000 , ' Gas exchange and heart rate in the harbour porpoise, Phocoena phocoena ' , Journal of Comparative Physiology B-Biochemical Systematic and Environmental Physiology , vol. 170 , no. 1 , pp. 1-10 . Klima Habitat article 2000 ftdtupubl 2024-01-24T23:56:20Z The respiratory physiology, heart rates and metabolic rates of two captive juvenile male harbour porpoises (both 28 kg) were measured using a rapid-response respiratory gas analysis system in the laboratory. Breath-hold durations in the laboratory (12 +/- 0.3 s, mean +/- SEM) were shorter than field observations. although a few breath-holds of over 40 s were recorded. The mean percentage time spent submerged was 89 +/- 0.4%. Relative to similarly-sized terrestrial mammals, the respiratory frequency was low (4.9 +/- 0.19 breaths min(-1)) but with high tidal volumes (1.1 +/- 0.01 l), enabling a comparatively high minute rate of gas exchange. Oxygen consumption under these experimental conditions (247 +/- 13.8 ml O-2. min(-1)) was 1.9- fold higher than predicted by standard scaling relations. These data together with an estimate of the total oxygen stores predicted an aerobic dive limit of 5.4 min. The peak end-tidal O-2 values were related to the length of the previous breath- hold, demonstrating the increased oxygen uptake from the lung for the longer dives. Blood oxygen capacity was 23.5 +/- 1.0 ml.100 ml(-1), and the oxygen affinity was high, enabling rapid oxygen loading during ventilation. Article in Journal/Newspaper Harbour porpoise Phocoena phocoena Technical University of Denmark: DTU Orbit |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Klima Habitat |
spellingShingle |
Klima Habitat Reed, J.Z. Chambers, C. Hunter, C.J. Lockyer, C. Kastelein, R. Fedak, M.A. Boutilier, R.G. Gas exchange and heart rate in the harbour porpoise, Phocoena phocoena |
topic_facet |
Klima Habitat |
description |
The respiratory physiology, heart rates and metabolic rates of two captive juvenile male harbour porpoises (both 28 kg) were measured using a rapid-response respiratory gas analysis system in the laboratory. Breath-hold durations in the laboratory (12 +/- 0.3 s, mean +/- SEM) were shorter than field observations. although a few breath-holds of over 40 s were recorded. The mean percentage time spent submerged was 89 +/- 0.4%. Relative to similarly-sized terrestrial mammals, the respiratory frequency was low (4.9 +/- 0.19 breaths min(-1)) but with high tidal volumes (1.1 +/- 0.01 l), enabling a comparatively high minute rate of gas exchange. Oxygen consumption under these experimental conditions (247 +/- 13.8 ml O-2. min(-1)) was 1.9- fold higher than predicted by standard scaling relations. These data together with an estimate of the total oxygen stores predicted an aerobic dive limit of 5.4 min. The peak end-tidal O-2 values were related to the length of the previous breath- hold, demonstrating the increased oxygen uptake from the lung for the longer dives. Blood oxygen capacity was 23.5 +/- 1.0 ml.100 ml(-1), and the oxygen affinity was high, enabling rapid oxygen loading during ventilation. |
format |
Article in Journal/Newspaper |
author |
Reed, J.Z. Chambers, C. Hunter, C.J. Lockyer, C. Kastelein, R. Fedak, M.A. Boutilier, R.G. |
author_facet |
Reed, J.Z. Chambers, C. Hunter, C.J. Lockyer, C. Kastelein, R. Fedak, M.A. Boutilier, R.G. |
author_sort |
Reed, J.Z. |
title |
Gas exchange and heart rate in the harbour porpoise, Phocoena phocoena |
title_short |
Gas exchange and heart rate in the harbour porpoise, Phocoena phocoena |
title_full |
Gas exchange and heart rate in the harbour porpoise, Phocoena phocoena |
title_fullStr |
Gas exchange and heart rate in the harbour porpoise, Phocoena phocoena |
title_full_unstemmed |
Gas exchange and heart rate in the harbour porpoise, Phocoena phocoena |
title_sort |
gas exchange and heart rate in the harbour porpoise, phocoena phocoena |
publishDate |
2000 |
url |
https://orbit.dtu.dk/en/publications/75b5057f-1607-4035-a5ed-d9c7a64929a9 |
genre |
Harbour porpoise Phocoena phocoena |
genre_facet |
Harbour porpoise Phocoena phocoena |
op_source |
Reed , J Z , Chambers , C , Hunter , C J , Lockyer , C , Kastelein , R , Fedak , M A & Boutilier , R G 2000 , ' Gas exchange and heart rate in the harbour porpoise, Phocoena phocoena ' , Journal of Comparative Physiology B-Biochemical Systematic and Environmental Physiology , vol. 170 , no. 1 , pp. 1-10 . |
op_relation |
https://orbit.dtu.dk/en/publications/75b5057f-1607-4035-a5ed-d9c7a64929a9 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1790601196543672320 |