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Vol. 34, No. 3, 1989
Issue release date: 1989
Section title: Paper
Brain Behav Evol 1989;34:171–183
(DOI:10.1159/000116503)

Early Development of the Olfactory and Terminalis Systems in Baleen Whales

Oelschläger H.A.
Department of Anatomy, Johann Wolfgang Goethe-University, Frankfurt am Main, FRG

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Article / Publication Details

First-Page Preview
Abstract of Paper

Published online: 2/6/2008
Issue release date: 1989

Number of Print Pages: 13
Number of Figures: 0
Number of Tables: 0

ISSN: 0006-8977 (Print)
eISSN: 1421-9743 (Online)

For additional information: http://www.karger.com/BBE

Abstract

The development of the olfactory and terminalis systems was studied in tissue from eight embryonic and early fetal specimens belonging to three species of baleen whales. In contrast to toothed whales, baleen whales, particularly in these ontogenetic stages, are much less specialized in nasal organ morphology. The nasal cavity and peripheral olfactory system are well developed and do not show signs of reduction. However, as in toothed whales, there is no trace of a vomeronasal organ or nerve. The terminalis neuroblasts can already be distinguished from the olfactory material in the embryonic period, and they form compact masses medial and caudal to the developing olfactory bulb. As in most prenatal toothed whales, there are two large intrameningeal terminalis ganglia. These are connected with the telencephalic wall by central rootlets and with the septal mucosa by fiber bundles running through the level of the future cribriform plate. Clusters of terminalis neuroblasts also lie near the septal mucosa and along the peripheral terminalis fiber bundles. The functional implications of the olfactory and terminalis systems in whales are discussed.

© 1989 S. Karger AG, Basel


  

Author Contacts

Priv. Doz. Dr. Helmut A. Oelschläger, Department of Anatomy, Johann Wolfgang Goethe-University, Theodor-Stern-Kai 7, D–6000 Frankfurt am Main 70 (FRG)

  

Article Information

Published online: NIL
Number of Print Pages : 13

  

Publication Details

Brain, Behavior and Evolution

Vol. 34, No. 3, Year 1989 (Cover Date: 1989)

Journal Editor: Wilczynski, W. (Atlanta, Ga.)
ISSN: 0006–8977 (Print), eISSN: 1421–9743 (Online)

For additional information: http://www.karger.com/BBE


Article / Publication Details

First-Page Preview
Abstract of Paper

Published online: 2/6/2008
Issue release date: 1989

Number of Print Pages: 13
Number of Figures: 0
Number of Tables: 0

ISSN: 0006-8977 (Print)
eISSN: 1421-9743 (Online)

For additional information: http://www.karger.com/BBE


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