Abstract
Intrapulmonary chemoreceptors (IPC) in the burrowing owl are reported to be much less sensitive to PCO2 than IPC in the chicken. This blunted IPC sensitivity has been suggested to be a physiological adaptation to hypercapnic subterrranean environments. To investigate the natural variation IPC responses in non-burrowing species, stimulus-response characteristics of 87 IPC in 22 anesthetized Pekin ducks were recorded and compared to those from 54 previously reported chicken IPC. Average logarithmic stimulus response curves were described by slopes of -11.2 and -10.7 imp·(sec·InPCO2)-1 for duck and chicken, respectively. Each had slopes steeper than the -6.87 imp· (sec·InPCO2)-1 slope reported for the burrowing owl. As with chicken IPC, slopes and intercepts of the individual curves were highly correlated in the duck. It appears that a general mechanism of receptor transduction exists in birds, with some quantitative interspecies variation.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 179-184 |
| Number of pages | 6 |
| Journal | Respiration Physiology |
| Volume | 61 |
| Issue number | 2 |
| DOIs | |
| State | Published - 1985 |
| Externally published | Yes |
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Keywords
- Birds
- Control of breathing
- Intrapulmonary receptors
ASJC Scopus subject areas
- Physiology
- Pulmonary and Respiratory Medicine
Cite this
Comparison of intrapulmonary chemoreceptor response to PCO2 in the duck and chicken. / Hempleman, Steven C; Burger, R. E.
In: Respiration Physiology, Vol. 61, No. 2, 1985, p. 179-184.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Comparison of intrapulmonary chemoreceptor response to PCO2 in the duck and chicken
AU - Hempleman, Steven C
AU - Burger, R. E.
PY - 1985
Y1 - 1985
N2 - Intrapulmonary chemoreceptors (IPC) in the burrowing owl are reported to be much less sensitive to PCO2 than IPC in the chicken. This blunted IPC sensitivity has been suggested to be a physiological adaptation to hypercapnic subterrranean environments. To investigate the natural variation IPC responses in non-burrowing species, stimulus-response characteristics of 87 IPC in 22 anesthetized Pekin ducks were recorded and compared to those from 54 previously reported chicken IPC. Average logarithmic stimulus response curves were described by slopes of -11.2 and -10.7 imp·(sec·InPCO2)-1 for duck and chicken, respectively. Each had slopes steeper than the -6.87 imp· (sec·InPCO2)-1 slope reported for the burrowing owl. As with chicken IPC, slopes and intercepts of the individual curves were highly correlated in the duck. It appears that a general mechanism of receptor transduction exists in birds, with some quantitative interspecies variation.
AB - Intrapulmonary chemoreceptors (IPC) in the burrowing owl are reported to be much less sensitive to PCO2 than IPC in the chicken. This blunted IPC sensitivity has been suggested to be a physiological adaptation to hypercapnic subterrranean environments. To investigate the natural variation IPC responses in non-burrowing species, stimulus-response characteristics of 87 IPC in 22 anesthetized Pekin ducks were recorded and compared to those from 54 previously reported chicken IPC. Average logarithmic stimulus response curves were described by slopes of -11.2 and -10.7 imp·(sec·InPCO2)-1 for duck and chicken, respectively. Each had slopes steeper than the -6.87 imp· (sec·InPCO2)-1 slope reported for the burrowing owl. As with chicken IPC, slopes and intercepts of the individual curves were highly correlated in the duck. It appears that a general mechanism of receptor transduction exists in birds, with some quantitative interspecies variation.
KW - Birds
KW - Control of breathing
KW - Intrapulmonary receptors
UR - http://www.scopus.com/inward/record.url?scp=0022254921&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0022254921&partnerID=8YFLogxK
U2 - 10.1016/0034-5687(85)90124-0
DO - 10.1016/0034-5687(85)90124-0
M3 - Article
C2 - 3931192
AN - SCOPUS:0022254921
VL - 61
SP - 179
EP - 184
JO - Respiratory Physiology and Neurobiology
JF - Respiratory Physiology and Neurobiology
SN - 1569-9048
IS - 2
ER -