Channichthyidae - Wikipedia
Their unusual cardiovascular physiology, including large heart, high blood volume, increased mitochondrial density, and extensive microvasculature, suggests that icefish have had to evolve ways of coping with the impairment of their oxygen binding and transport systems.
The heart of the icefish: bioconstruction and adaptation
The heart has the ability to displace large systolic volumes at a low rate and relatively low pressure, with large ventricular fillings (high ventricular compliance), whereas it is incapable of facing increased afterloads.
Ice Fish - Cronodon
May 4, 2015 · pump and the heart has a very large stroke volume (the volume of blood pumped in a single heartbeat) 6-15 times higher than for a red-blooded fish of similar size. In fact the icefish heart has a capacity similar to
Blackfin icefish - Wikipedia
Icefish also possess an enlarged, hypertrophied heart, which allows the animal to pump very large volumes of blood at a low pressure and speed. The stroke volume of the icefish heart is 6-15 times that of other teleosts, and the blood volume in general is …
Heart structure and ventricular ultrastructure of hemoglobin- and ...
The heart of the icefish is characterized by a spongy myocardium supplied with a highly developed arterial coronary system. This vasculature includes a subepicardial system and an extensive intratrabecular capillary network.
Adaptations of the hemoglobinless Antarctic icefish (Channichthyidae …
Dec 1, 1997 · The icefish heart ventricle is three to four times larger than that of Nototheniidae (10,26,37). To improve the oxygen systemic flux, the hypertrophied icefish heart generates a high cardiac output, five to six times greater than that of other …
The heart of the Antarctic icefish as paradigm of cold adaptation
Dec 1, 1997 · In this synopsis we will illustrate examples taken from molecular, ultra- structural and organ physiology levels of the icefish heart as a paradigm of cardiac cold adaptation.
Structural and Mechanical Characteristics of the Heart of the …
The absence of haemoglobin from the blood of icefish, antarctic teleosts of the family Chaenichthydae, has stimulated important physiological mechanisms which serve to compensate for the absence of the respiratory pigment.
The Cardiovascular System of Antarctic Icefish Appears to Have …
Oct 21, 2022 · Viscosity insufficiency creates a condition analogous to high-output heart failure in humans. Viscosity excess directly increases vascular resistance. Both decrease factorial scope for cardiac...
Adaptations of the hemoglobinless Antarctic icefish (Channichthyidae …
Dec 1, 1997 · Antarctic fish of the family Channichthyidae, or icefish, represent a unique model for the study of physiological and biochemical responses to chronic hypoxia since the genes coding for hemoglobin and possible myoglobin are not expressed by these teleosts.