... as a measure of hypoxia tolerance. Here, P crit is defined as the P O 2 at which physiological oxygen supply (α 0 ) reaches its maximum capacity (α; µmol O 2 g −1 h −1 kPa −1 ). α is a species- and temperature-specific constant describing the oxygen dependency of the maximum metabolic rate (MMR= P O 2 ×α...

... concept of oxygen- and capacity-limited thermal tolerance (OCLTT) has successfully characterised the onset of thermal limits to performance and field abundance. The OCLTT concept addresses the molecular to whole-animal mechanisms that define thermal constraints on the capacity for oxygen supply...

... the thorax in flying blowflies by opening the valve flaps during wing upstroke and keeping the inner openings narrow. Auto-ventilation Insect respiration Tracheal pressure Tracheae Spiracles Haemolymph Opener muscle Oxygen supply CO 2 release Respiratory gas exchange in insects depends...

... of microcirculatory oxygen supply, it is found that muscle tissue capillarity is adjusted to muscle oxygen demand but that the capillary erythrocyte volume also plays a role. Oxygen delivery by the heart has long been recognized to be a key link in the oxygen transport chain. In allometric variation it is heart rate...