A peer-reviewed version of this preprint was published in PeerJ on 28 Organization and distribution of glomeruli in the bowhead whale olfactory bulb
Although modern baleen whales still possess a functional olfactory systems that includes olfactory bulbs, cranial nerve I and olfactory receptor genes, their olfactory capabilities have been reduced profoundly. This is probably in response to their fully aquatic lifestyle. The glomeruli that occur i...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.1080.3135 2023-05-15T15:35:59+02:00 A peer-reviewed version of this preprint was published in PeerJ on 28 Organization and distribution of glomeruli in the bowhead whale olfactory bulb Takushi Kishida J G M Thewissen Sharon Usip John C George Robert S Suydam Sekiden-Cho Tanaka The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1080.3135 en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1080.3135 Metadata may be used without restrictions as long as the oai identifier remains attached to it. https://peerj.com/preprints/740v1.pdf text ftciteseerx 2020-05-03T00:23:17Z Although modern baleen whales still possess a functional olfactory systems that includes olfactory bulbs, cranial nerve I and olfactory receptor genes, their olfactory capabilities have been reduced profoundly. This is probably in response to their fully aquatic lifestyle. The glomeruli that occur in the olfactory bulb can be divided into two non-overlapping domains, a dorsal domain and a ventral domain. Recent molecular studies revealed that all modern whales have lost olfactory receptor genes and marker genes that are specific to the dorsal domain, and that a modern baleen whale possess only 60 olfactory receptor genes. Here we show that olfactory bulb of bowhead whales (Balaena mysticetus, Mysticeti) lacks glomeruli on the dorsal side, consistent with the molecular data. In addition, we estimate that there are more than 4,000 glomeruli in the bowhead whale olfactory bulb. Olfactory sensory neurons that express the same olfactory receptor in mice generally project to two specific glomeruli in an olfactory bulb, meaning that ratio of the number of olfactory receptors : the number of glomeruli is approximately 1:2. However, we show here that this ratio is not applicable to whales, indicating the limitation of mice as model organisms for understanding the initial coding of odor information among mammals. Text Balaena mysticetus baleen whale baleen whales bowhead whale Unknown |
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ftciteseerx |
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English |
description |
Although modern baleen whales still possess a functional olfactory systems that includes olfactory bulbs, cranial nerve I and olfactory receptor genes, their olfactory capabilities have been reduced profoundly. This is probably in response to their fully aquatic lifestyle. The glomeruli that occur in the olfactory bulb can be divided into two non-overlapping domains, a dorsal domain and a ventral domain. Recent molecular studies revealed that all modern whales have lost olfactory receptor genes and marker genes that are specific to the dorsal domain, and that a modern baleen whale possess only 60 olfactory receptor genes. Here we show that olfactory bulb of bowhead whales (Balaena mysticetus, Mysticeti) lacks glomeruli on the dorsal side, consistent with the molecular data. In addition, we estimate that there are more than 4,000 glomeruli in the bowhead whale olfactory bulb. Olfactory sensory neurons that express the same olfactory receptor in mice generally project to two specific glomeruli in an olfactory bulb, meaning that ratio of the number of olfactory receptors : the number of glomeruli is approximately 1:2. However, we show here that this ratio is not applicable to whales, indicating the limitation of mice as model organisms for understanding the initial coding of odor information among mammals. |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Takushi Kishida J G M Thewissen Sharon Usip John C George Robert S Suydam Sekiden-Cho Tanaka |
spellingShingle |
Takushi Kishida J G M Thewissen Sharon Usip John C George Robert S Suydam Sekiden-Cho Tanaka A peer-reviewed version of this preprint was published in PeerJ on 28 Organization and distribution of glomeruli in the bowhead whale olfactory bulb |
author_facet |
Takushi Kishida J G M Thewissen Sharon Usip John C George Robert S Suydam Sekiden-Cho Tanaka |
author_sort |
Takushi Kishida |
title |
A peer-reviewed version of this preprint was published in PeerJ on 28 Organization and distribution of glomeruli in the bowhead whale olfactory bulb |
title_short |
A peer-reviewed version of this preprint was published in PeerJ on 28 Organization and distribution of glomeruli in the bowhead whale olfactory bulb |
title_full |
A peer-reviewed version of this preprint was published in PeerJ on 28 Organization and distribution of glomeruli in the bowhead whale olfactory bulb |
title_fullStr |
A peer-reviewed version of this preprint was published in PeerJ on 28 Organization and distribution of glomeruli in the bowhead whale olfactory bulb |
title_full_unstemmed |
A peer-reviewed version of this preprint was published in PeerJ on 28 Organization and distribution of glomeruli in the bowhead whale olfactory bulb |
title_sort |
peer-reviewed version of this preprint was published in peerj on 28 organization and distribution of glomeruli in the bowhead whale olfactory bulb |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1080.3135 |
genre |
Balaena mysticetus baleen whale baleen whales bowhead whale |
genre_facet |
Balaena mysticetus baleen whale baleen whales bowhead whale |
op_source |
https://peerj.com/preprints/740v1.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1080.3135 |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766366327473176576 |