Gleich, Otto and Schaefer, Britta and Kadow, Celia and Stuermer, Ingo W. and Strutz, Jürgen (2000) Domestication differentially affects cochlear nucleus subdivisions in the gerbil. JOURNAL OF COMPARATIVE NEUROLOGY, 428 (4). pp. 609-615. ISSN 0021-9967
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We analyzed the effects of domestication on the subdivisions of the cochlear nucleus in the gerbil (Meriones unguiculatus) by comparing their volumes and rostrocaudal extents in laboratory gerbils and in age-matched Fl offspring of gerbils caught in the wild. In addition, soma size was systematically analyzed in the anteroventral cochlear nucleus of both groups. Total cochlear nucleus volume and rostrocaudal extent were not significantly different between groups either for young (postnatal day 9) animals before the onset of hearing or for young 4-month-old animals. However, the dorsal cochlear nucleus was significantly larger and the anteroventral cochlear nucleus was significantly smaller in young adults of the wild strain. Thus the relative proportions of the cochlear nucleus subdivisions differed between the groups. In addition, soma size was significantly larger in the low-frequency portion of the anterovental cochlear nucleus in domesticated gerbils compared to wild gerbils. To our knowledge, this is the first reported instance of a well-defined brain structure (e.g., the antreovental cochlear nucleus) being larger in the domesticated than in the wild form. J. Comp. Neurol. 428:609-615, 2000. (C) 2000 Wiley-Liss, Inc.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CENTRAL AUDITORY PATHWAY; MERIONES-UNGUICULATUS; MONGOLIAN GERBIL; TONOTOPIC ORGANIZATION; POSTNATAL-DEVELOPMENT; ANATOMY; HEARING; LESIONS; SYSTEM; GROWTH; evolution; brain; auditory cell size |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Hals-Nasen-Ohren-Heilkunde |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 08 Mar 2022 10:49 |
| Last Modified: | 08 Mar 2022 10:49 |
| URI: | https://pred.uni-regensburg.de/id/eprint/41970 |
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