The unusual energy metabolism of elasmobranchs is characterized by limited or absent fatty
acid oxidation in cardiac and skeletal muscle and a great reliance on ketone bodies and …

Environmental temperature affects physiological functions, representing a barrier for the
range expansions of ectothermic species. To understand the link between thermal …

Atlantic stingrays, Dasyatis sabina, are common residents of shallow-water seagrass
habitats that experience natural cycles of severe hypoxia during summer months. We …

A psychrotrophic bacterium producing a cold-adapted lipase was isolated from the deep-sea
sediment of Prydz Bay, Antarctic and identified as a Pseudomonas strain. Determination of …

In teleost fishes, catecholamine-induced increases in the activity of cation exchangers
compensate for decreases in hemoglobin oxygen affinity and maximum blood oxygen …

Enzymes from psychrophiles show higher catalytic efficiency in the 0–20° C temperature
range and often lower thermostability in comparison with meso/thermophilic homologs …

Haemoglobin carries oxygen from the environment to tissues; in vertebrates, it is contained
in specialized cells, called erythrocytes. Over the last century, the study of the chemical …

The Arctic and Antarctic marine faunas differ by age and isolation. Fishes of the two polar
regions have undergone different regional histories that have driven the physiological …

Non-synonymous variation (NSV) of protein coding genes represents raw material for
selection to improve adaptation to the diverse environmental scenarios in wild and livestock …

Fishes thriving in polar habitats offer many opportunities for comparative approaches to
understanding protein thermal adaptations. Investigations on the remarkable evolutionary …