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swim bladder

NOUN
  1. an air-filled sac near the spinal column in many fishes that helps maintain buoyancy

How To Use swim bladder In A Sentence

  • Similarly, lungs were a selective advantage to fish living in stagnant waters, enabling them to breathe air, long before the descendants of these fish walked on land; in modern teleost fishes the lung has lost its function as a breathing organ, and has been transformed into a hydrostatic organ, the swim bladder. A Mystery for the Ages
  • A few modern fishes, including the coelacanth, the African bichir Polypterus, and three genera of lungfishes, retained lungs … In two major lineages of derived bony fishes - the chondrosteans and the teleosts -- lungs evolved to swim bladders by atrophy of vascular tissue to create a more or less empty sac and, in some cases, by loss of the connecting tube to the esophagus (called the trachea in humans and other creatures with lungs). Citizendium, the Citizens' Compendium - Recent changes [en]
  • The swim bladder is like a balloon.
  • The paired lung-like swim bladders are connected to the esophagus and are used for respiration; the fish die if denied access to the surface to gulp air.
  • Herring and other fish with primitive swim bladders must surface and gulp air to keep their bladders full and their bodies buoyant.
  • Fish make the popping noises by sending air through different chambers of their swim bladders, the inflatable sacs that help fish float.
  • In these the fins have lost their lobes, and one lung has been lost and the other converted to a swim bladder.
  • The swim bladder is homologous to the lungs of tetrapods.
  • Treatment with methylene blue and acriflavin, but not chloramine-T, produced significantly different frequencies of swim bladder non-inflation morphologies compared to control fish. Practical Fishkeeping news (RSS)
  • These species depend upon a network of blood vessels to concentrate oxygen in their swim bladder.
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