... a common sediment-dwelling bivalve, the soft-shell clam Mya arenaria , for 21 days to chronic hypoxia ( P O 2 ∼4.1 kPa), cyclic hypoxia ( P O 2 ∼12.7–1.9 kPa, mean 5.7 kPa) or normoxia ( P O 2 ∼21.1 kPa). pH was manipulated to mimic the covariation in CO 2 /pH and oxygen levels in coastal hypoxic zones...

... © 2021. Published by The Company of Biologists Ltd 2021 Highlighted Article: Chronic (whole-life) studies do not support a causative role for oxygen limitation in setting upper chronic thermal limits or temperature-size patterns in mayflies. Chronic hypoxia Hyperoxia TSR OCLTT...

.../ Summary: Four cichlids of the Lake Victoria species flock raised under hypoxia exhibit a remarkable change in isohemoglobin pattern, corresponding with improved hemoglobin O 2 -binding affinity. Isohemoglobins Hemoglobin affinity Chronic hypoxia Acclimation Species flock Cichlids Lake...

... cardiovascular physiology into adulthood, dictating convective transport during periods of elevated oxygen demand. Cardiac output Cardiac shunting Developmental programming Chronic hypoxia Phenotypic plasticity Reptile Chronic hypoxia during embryonic development has a profound effect...

... under conditions of chronic hypoxia at high altitude display divergent physiological responses. Chronic hypoxia Metabolism Physiology Respiration Rodents Physiological changes at high altitude are required to optimize the diffusion, transport and cellular utilization of oxygen...

.... Published by The Company of Biologists Ltd 2014 Chronic hypoxia Time domains Neuroepithelial cells Air breathing fish In mammals, stimulation of peripheral arterial O 2 chemoreceptors (glomus cells) in the carotid body produces robust cardiovascular and ventilatory responses. Unlike most...

...L. H. Petersen; A. K. Gamperl SUMMARY Recent in vivo experiments on Atlantic cod ( Gadus morhua ) acclimated to chronic hypoxia (6-12 weeks at 10°C; P w O 2 ~8-9 kPa) revealed a considerable decrease in the pumping capacity of the heart. To examine whether this diminished cardiac performance...