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Evolution of Vomeronasal Organs in Vertebrates

Gunnar Bertmar
Evolution
Vol. 35, No. 2 (Mar., 1981), pp. 359-366
DOI: 10.2307/2407844
Stable URL: http://www.jstor.org/stable/2407844
Page Count: 8
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Evolution of Vomeronasal Organs in Vertebrates
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Abstract

The vertebrate vomeronasal organs may have evolved from enlarged fish olfactory folds (nasal diverticulae) with an accumulation of specialized olfactory receptors. Different tetrapod lines are suggested for the organs and their ducts (Fig. 3). Vomeronasal glands have developed which together with secretions from the vomeronasal epithelium give the receptors a complex aqueous medium in which to work. The primary function is probably to improve and specialize the function of the olfactory organs. Lungfishes and urodeles have the simplest type of vomeronasal organs in Recent vertebrates.

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