Over the last decade, hydrogen sulfide (H 2 S) has emerged as an important endogenous
gasotransmitter in mammalian cells and tissues. Similar to the previously characterized …

Fish, like mammals, have to maintain their body fluid ionic and osmotic homeostasis through
sophisticated iono-/osmoregulation mechanisms, which are conducted mainly by ionocytes …

Signaling in cells involving reactive compounds is well established. Reactive oxygen
species (ROS) and nitric oxide (NO) are known to be extremely influential in the control of a …

Adjustments of ventilation in fishes to regulate the volume of water flowing over the gills are
critically important responses to match branchial gas transfer with metabolic needs and to …

The ability to detect oxygen availability is a ubiquitous attribute of aerobic organisms.
However, the mechanism (s) that transduce oxygen concentration or availability into …

Surviving hypoxia is one of the most critical challenges faced by vertebrates. Most species
have adapted to changing levels of oxygen in their environment with specialized organs that …

Seminal studies from the early 20th century defined the structural changes associated with
development and regeneration of the gills in goldfish at the gross morphological and cellular …

Hydrogen sulphide (H 2 S) is a naturally occurring compound generated either
endogenously or exogenously and serves both as a gaseous signalling molecule and an …

Nitric oxide (NO) is a gaseous neurotransmitter, which, in adult mammals, modulates the
acute hypoxic ventilatory response; its role in the control of breathing in fish during …

Changes in environmental oxygen (O2) are naturally occurring phenomena which
ectotherms have to face on. Many species exhibit a striking capacity to survive and remain …