Anatomical structure that connects the swim bladder to the auditory system in fishes
Weberian apparatus and air-bladder of a carp
The Weberian apparatus is an anatomical structure that connects the swim bladder to the auditory system in fishes belonging to the superorder Ostariophysi. When it is fully developed in adult fish, the elements of the apparatus are sometimes collectively referred to as the Weberian ossicles or Weber's ossicles. The presence of the structure is one of the most important and phylogenetically significant distinguishing characteristics of the Ostariophysi. The structure itself consists of a set of minute bones that originate from the first few vertebrae to develop in an embryonic ostariophysan. These bones grow to physically connect the auditory system, specifically the inner ear, to the swim bladder.[1][2] The structure acts as an amplifier of sound waves that would otherwise be only slightly perceivable by the inner ear structure alone.
^Rosen, Donn Eric; P. Humphry Greenwood (1970-08-26). "Origin of the Weberian Apparatus and the Relationships of the Ostariophysan and Gonorynchiform Fishes". American Museum Novitates (2428). New York, New York, USA: American Museum of Natural History.
^Grande, Terry; Mario de Pinna (2004). G. Arratia & A. Tintori (ed.). The evolution of the Weberian apparatus: A phylogenetic perspective(PDF). Mesozoic Fishes 3 – Systematics, Paleoenvironments and Biodiversity. München, Germany: Verlag. pp. 429–448. ISBN 3-89937-053-8.
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The Weberianapparatus is an anatomical structure that connects the swim bladder to the auditory system in fishes belonging to the superorder Ostariophysi...
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vibrations to the inner ear. A fully functioning Weberianapparatus consists of the swim bladder, the Weberian ossicles, a portion of the anterior vertebral...
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range compared to most mammals. Goldfish and catfish do possess a Weberianapparatus and have a wider hearing range than the tuna. As aquatic environments...
characterized by a primitive Weberianapparatus formed by the first three vertebrae and one or more cephalic ribs within the head. This apparatus is believed to be...
have developed some unique adaptations. One is the Weberianapparatus, an arrangement of bones (Weberian ossicles) connecting the swim bladder to the inner...
by a series of small bones derived from neck vertebrae called the Weberianapparatus, which greatly enhances its hearing capability. The posterior chamber...
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