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Keywords: Hypercapnia
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Journal Articles
J Exp Biol (2023) 226 (6): jeb245324.
Published: 29 March 2023
... burrow environment. Therefore, we hypothesized that tenrecs are tolerant to environmental hypoxia and hypercapnia. Many hypoxia- and hypercapnia-tolerant fossorial mammals respond to hypoxia by decreasing metabolic rate and thermogenesis, and have blunted ventilatory responses to both environmental...
Journal Articles
J Exp Biol (2022) 225 (23): jeb245088.
Published: 9 December 2022
... cells, which act as lactate sensors. Lactate O 2 chemoreceptors Fish gill Hypercapnia L-type Ca 2+ channels Monocarboxylic acid transporter Natural Sciences and Engineering Research Council of Canada http://dx.doi.org/10.13039/501100000038 NSERC http://dx.doi.org...
Journal Articles
Journal Articles
J Exp Biol (2021) 224 (8): jeb240804.
Published: 16 April 2021
..., hypercapnia and hypoxia. A selective OX 1 R antagonist (SB-334867; 5–25 µmol l −1 ) or agonist (ORX-A; 200 nmol l −1 to 1 µmol l −1 ) was added to the superfusion media. Experiments were performed under basal conditions (media equilibrated with 98.2% O 2 and 1.8% CO 2 ), hypercapnia (5% CO 2 ) or hypoxia (5–7...
Journal Articles
J Exp Biol (2020) 223 (5): jeb212928.
Published: 12 March 2020
... + -ATPase. Although there were slight differences among the three knockdown/knockout experiments, the typical response was a greater degree of intracellular acidification during CO 2 exposure and a reduced capacity to restore pHi to baseline levels post-hypercapnia. The metabolic alkalosis and subsequent...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (8): jeb195388.
Published: 26 April 2019
... rhythm by isolating the thoracic ganglia and perfusing its main tracheae with various respiratory gas mixtures. Fictive ventilation activity was recorded from motor nerves controlling spiracular and abdominal ventilatory muscles. Both hypoxia and hypercapnia increased the ventilation rate...
Journal Articles
Journal Articles
J Exp Biol (2018) 221 (19): jeb187443.
Published: 10 October 2018
... will impair blood oxygen supply in active squid. Acid–base balance Blood–O 2 binding Hypercapnia Cephalopod Hypoxia tolerance Dosidicus Atmospheric carbon dioxide (CO 2 ) partial pressure ( P CO 2 ) has increased from the pre-industrial mean of 28 Pa (280 μatm, ppmv) to over 40 Pa...
Includes: Supplementary data
Journal Articles
J Exp Biol (2017) 220 (21): 3939–3948.
Published: 1 November 2017
... and poikilothermy, and extreme tolerance of hypoxia and hypercapnia. With little information available on adjustments in haemoglobin (Hb) function that may mitigate the impact of exogenous and endogenous constraints on the uptake and internal transport of O 2 , we measured haematological characteristics, as well...
Includes: Supplementary data
Journal Articles
J Exp Biol (2017) 220 (5): 765–774.
Published: 1 March 2017
...-1-1/ Highlighted Article: Intertidal oysters are more vulnerable to ocean acidification than subtidal oysters, and this may limit their vertical distribution. Emersion Ocean acidification Hypercapnia Multiple stressors Mollusc Sessile marine molluscs living...
Includes: Supplementary data
Journal Articles
Journal Articles
Journal Articles
J Exp Biol (2015) 218 (9): 1290–1294.
Published: 1 May 2015
... and ion regulation. Therefore, air-breathing fishes are believed to have a low capacity for extracellular pH regulation during a respiratory acidosis. In the present study, we investigated acid–base regulation during hypercapnia in the air-breathing fish Pangasianodon hypophthalmus in normoxic and hypoxic...
Includes: Supplementary data
Journal Articles
Journal Articles
J Exp Biol (2014) 217 (13): 2411–2421.
Published: 1 July 2014
... of the brittlestar Amphiura filiformis during environmental hypercapnia demonstrated that besides hypoxic conditions, increases of environmental P CO 2 are additive to the already high P CO 2 (up to 0.08 kPa) within the burrows. In response to up to 4 weeks exposure to pH 7.3 (0.3 kPa P CO 2 ) and pH 7.0 (0.6 kPa P...
Includes: Supplementary data
Journal Articles
J Exp Biol (2014) 217 (5): 673–681.
Published: 1 March 2014
... regress postnatally, in parallel with maturation of splanchnic innervation. Here, we review the evidence that neurotransmitters released from the splanchnic nerve during innervation activate signaling cascades that ultimately cause regression of direct AMC chemosensitivity to hypoxia and hypercapnia...
Journal Articles
J Exp Biol (2013) 216 (8): 1405–1411.
Published: 15 April 2013
... of embryos and larvae (N=4–8 per brood) of independent broods after 8–10 days in the treatments, shown as the percentage change from ambient pH values. Means ± s.e.m. Environmental hypercapnia associated with ocean acidification affects physiological processes such as acid–base regulation...
Includes: Supplementary data
Journal Articles
J Exp Biol (2013) 216 (2): 171–180.
Published: 15 January 2013
... was estimated as a percentage of resting metabolic rate using hypercapnia to stimulate ventilation at different stages of pregnancy. The energetic cost of breathing in non-pregnant lizards was 19.96±3.85% of resting metabolic rate and increased threefold to 62.80±10.11% during late gestation. This significant...
Journal Articles
J Exp Biol (2012) 215 (5): 845–852.
Published: 1 March 2012
..., transection of the diaphragmaticus muscle did not induce any significant alterations in the ventilatory, respiratory or blood gas variables (Figs 6 and 7 , Table 1 ). ventilation breathing pattern oxygen consumption blood gases exercise hypercapnia crocodilian Crocodilians generate...
Journal Articles
J Exp Biol (2012) 215 (1): 29–43.
Published: 1 January 2012
... at current atmospheric P CO2 (∼400 μatm, normocapnia) or P CO2 projected by moderate IPCC scenarios for the year 2100 (∼700–800 μatm, hypercapnia). Exposure of the juvenile oysters to elevated P CO2 and/or low salinity led to a significant increase in mortality, reduction of tissue energy stores (glycogen...