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  The Correlation Of Coat Color On Olfactory Bulb Layering In The Female American Mink (Neovison Vison Var. Spec.)

Bennegger, W., & Weiler, E. (2018). The Correlation Of Coat Color On Olfactory Bulb Layering In The Female American Mink (Neovison Vison Var. Spec.). Poster presented at 40th Annual Meeting of the Association for Chemoreception Sciences: AChemS XL, Bonita Springs, FL, USA.

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Bennegger, W, Author
Weiler, E1, 2, Author              
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1Department Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497798              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              

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 Abstract: The neuronal system is only in a few areas a „colored“ system, such as the substantia nigra, which received its name by the dark color based on the neuromelanin of dopaminergic neurons. Melanin is a pigment of skin and hair, so the question arose, if there might be a correlation of the coat color and brain areas containing dopaminergic neurons such as the olfactory bulb. Therefore we investigated the olfactory bulbs of female American minks bred specifically for their coat color and measured the absolute layer volumes of the four color varieties: dark black “standard” (Neovison vison var. atratus, a), light black “silverblue” (Neovison vison var. glaucus, g), light brown “pastel” (Neovison vison var. suffuscus, s), dark brown “wild” (Neovison vison var. carinum, c) using a morphometric system. The volume of the glomerular layer, including the periglomerular dopaminergic neurons, revealed a significant difference between the pale brown variety (suffuscus: 20.68±4.73mm3) versus the black varieties (glaucus: 14.79±0.91mm3 and atratus: 15.35±1.21mm3). Significant differences were also observed in the mitral cell layer (including passing periglomerular cells) of suffuscus (5.30±1.55mm3) versus the black varieties glaucus (3.54±0.65mm3) and atratus (3.78±0.37mm3) and in the internal plexiform layer (s: 5.36±0.86mm3; significant different vs g: 3.54±0.65 mm3 and a: 2.90±0.33mm3). No differences were found among any of the color varieties in the volumes of the fila, external plexiform, granule cell and subependymal layer, which are all composed of much fewer or no dopaminergic neurons. Our results indicate that, based on gene expression, the coat color might reflect neuronal structures.

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 Dates: 2018-09
 Publication Status: Published in print
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 Identifiers: BibTex Citekey: BenneggerW2018
DOI: 10.1093/chemse/bjy035
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Title: 40th Annual Meeting of the Association for Chemoreception Sciences: AChemS XL
Place of Event: Bonita Springs, FL, USA
Start-/End Date: 2018-04-16 - 2018-04-17

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Title: Chemical Senses
Source Genre: Journal
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Publ. Info: Oxford : Oxford University Press [etc.]
Pages: - Volume / Issue: 43 (7) Sequence Number: P230 Start / End Page: e200 - e201 Identifier: ISSN: 0379-864X
CoNE: https://pure.mpg.de/cone/journals/resource/954928560444