swim bladder


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

air blad·der

a gas-filled sac that is present in most fish and functions as a hydrostatic organ; it is located beneath the vertebral column primarily in the anterior abdomen and is connected with the esophagus in some species (for example, goldfish). Oxygen is transferred from a rich venous sinus into the swim bladder to increase buoyancy.
Synonym(s): swim bladder

swim bladder

n.
A gas-filled structure in many fishes that functions to maintain buoyancy and, in some species, to aid in respiration or to produce sound. Also called air bladder, gas bladder.

swim bladder

see AIR BLADDER.
References in periodicals archive ?
The lucrative market for the swim bladders has turned the Gulf of California into a battleground, as armed poachers use drug cartel-like tactics to get hold of the "cocaine of the sea".
The Swim bladder disease is also known as "flipover", a common ailment seen in fish.
Table 1: Distribution and frequency of gram's(-) bacteria isolated from skin, gills, intestine, kidney, liver and swim bladder at Lake Hayiq.
The origin and evolution of the surfactant system in fish: insights into the evolution of lungs and swim bladders. Physiol.
Side fizzing (needle through the flank) into the swim bladder, mouth fizzing, where the needle is inserted at the back of the mouth, and the deep release or "caging" system.
The hypotesis of this assay was to verify whether supplemented diet with natural extracts of propolis and babosa Aloe barbadensis Miller may influence the acute inflammation and hematological response when carrageenin is injected in the swim bladder of Nile tilapia, a proved experimental model.
Histological study of fresh swim bladder revealed several layers (Fig.1).
The mudminnows (Umbra spp.) are capable of air breathing using the swim bladder (Graham 1997; Magnuson and others 1983).
In order to determine the effects of the addition of probiotic bacteria on the inflammatory and hematological response in Nile tilapia, fish were fed diets containing Lactobacillus plantarum isolated from tilapia after carrageenin or saline injection in the swim bladder.
"All fish can hear, but not all can make sound - pops and other sounds made by vibrating their swim bladder, a muscle they can contract," The New Zealand Herald quoted him, as saying.
The blood vessels that feed the eel's swim bladder increase in number.
The Schacts processed sturgeon eggs to be used as caviar and isinglass made from the fish's swim bladder which was used in manufacturing wine and beer.