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The air-bladder serves as an important hydrostatic organ in fishes and helps to keep the weight of the body equal to the volume of the water the fish displaces.
In the trunk region of the tube, there are 14 to 15 blind pouches with finger like projections. The pouches and their projection have profuse supply of blood capillaries. Thus, the airbladder in this case serves as true lung and makes the fishes almost a air breather (Munchi and Hughes, 1992).
By HARDEN F. TAYLOR, Chief Technologist, U. S. Bureau ofFisheries. The function of the air bladder in fishes has been a subject of discussion since the time of Aristotle, all manner of uses having been suggested for it-flotationadjustment, sense organ, manometer, barometer, respiration reservoir, sound producer, steering device, and the like.
It is a characteristic organ of Osteichthyes (bony fishes). It is a gas-filled pneumatic sac, called air-bladder or swim-bladder..It has different kind of functions…sensory function, auditory function,sound production and helps in respiration…It is also a hydrostatic organ.
The air bladder of modern fish is an ellipsoidal, gas-filled sac that arises as an extension of the gut. In many species of fish, the air bladder remains connected to the gut and the fish can use this connection to control the amount of gas in the air bladder. This is called the ‘Physostomous’ condition.
Swim bladder, buoyancy organ possessed by most bony fish. It contains gas (usually oxygen) and functions as a hydrostatic, or ballast, organ, enabling the…
The swim bladder is a gas-filled organ in the dorsal coelomic cavity of fish. Its primary function is maintaining buoyancy, but it is also involved in…
The respiratory function of the swim-bladder is quite significant. In many fishes living in water in which oxygen content is considerably low, the oxygen…
The swimbladder, or air-bladder, of a fish is situated dorsal to the ccelom, between the alimentary canal and the vertebral column. It is a membranous.
11. The swimbladder is a mechanism which enables the fish to actively maintain its stability in the midst of changing external conditions.
The trick is the swim bladder, which is basically like an air-inflated balloon that can expand and contract depending on how much gas is inside.
of active species of fish, shows that this function is of no special … that the original purpose of the air-bladder must have been very.
The swim-bladder is present in almost all the bony fishes and functions usually as a hydrostatic organ. Starting as a very insignificant cellular extension from…