Neuronal Fiber Composition of the Corpus Callosum Within Some Odontocetes
Abstract Odontocetes (toothed whales) evolved from terrestrial mammals approximately 55 million years ago and have since remained on a unique evolutionary trajectory. This study used formalin‐fixed tissue and light microscopy to quantify the size and number of fibers along the corpus callosum of the...
Published in: | The Anatomical Record |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2008
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/ar.20701 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Far.20701 http://onlinelibrary.wiley.com/wol1/doi/10.1002/ar.20701/fullpdf |
id |
crwiley:10.1002/ar.20701 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/ar.20701 2024-03-17T08:58:46+00:00 Neuronal Fiber Composition of the Corpus Callosum Within Some Odontocetes Keogh, Mandy J. Ridgway, Sam H. 2008 http://dx.doi.org/10.1002/ar.20701 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Far.20701 http://onlinelibrary.wiley.com/wol1/doi/10.1002/ar.20701/fullpdf en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor The Anatomical Record volume 291, issue 7, page 781-789 ISSN 1932-8486 1932-8494 Ecology, Evolution, Behavior and Systematics Histology Biotechnology Anatomy journal-article 2008 crwiley https://doi.org/10.1002/ar.20701 2024-02-22T02:01:12Z Abstract Odontocetes (toothed whales) evolved from terrestrial mammals approximately 55 million years ago and have since remained on a unique evolutionary trajectory. This study used formalin‐fixed tissue and light microscopy to quantify the size and number of fibers along the corpus callosum of the bottlenose dolphin (n = 8). Two other species, the Amazon River dolphin (n = 1) and the killer whale (n = 1), were included for comparison. A large amount of variation in the shape and area of the corpus callosum was observed. The odontocete corpus callosum is a heterogeneous structure with variation in fiber size and density along the length of the corpus callosum in all specimens examined. Using the species with the largest sample size, the bottlenose dolphin, comparisons by sex and age (sexually mature verses immature) were made for the area of the corpus callosum, five subregions, and fiber densities. Although no sex differences were detected, age appeared to affect the size, shape, and fiber composition of the bottlenose dolphin corpus callosum. Anat Rec, 291:781‐789, 2008. © 2008 Wiley‐Liss, Inc. Article in Journal/Newspaper Killer Whale toothed whales Killer whale Wiley Online Library The Anatomical Record 291 7 781 789 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
topic |
Ecology, Evolution, Behavior and Systematics Histology Biotechnology Anatomy |
spellingShingle |
Ecology, Evolution, Behavior and Systematics Histology Biotechnology Anatomy Keogh, Mandy J. Ridgway, Sam H. Neuronal Fiber Composition of the Corpus Callosum Within Some Odontocetes |
topic_facet |
Ecology, Evolution, Behavior and Systematics Histology Biotechnology Anatomy |
description |
Abstract Odontocetes (toothed whales) evolved from terrestrial mammals approximately 55 million years ago and have since remained on a unique evolutionary trajectory. This study used formalin‐fixed tissue and light microscopy to quantify the size and number of fibers along the corpus callosum of the bottlenose dolphin (n = 8). Two other species, the Amazon River dolphin (n = 1) and the killer whale (n = 1), were included for comparison. A large amount of variation in the shape and area of the corpus callosum was observed. The odontocete corpus callosum is a heterogeneous structure with variation in fiber size and density along the length of the corpus callosum in all specimens examined. Using the species with the largest sample size, the bottlenose dolphin, comparisons by sex and age (sexually mature verses immature) were made for the area of the corpus callosum, five subregions, and fiber densities. Although no sex differences were detected, age appeared to affect the size, shape, and fiber composition of the bottlenose dolphin corpus callosum. Anat Rec, 291:781‐789, 2008. © 2008 Wiley‐Liss, Inc. |
format |
Article in Journal/Newspaper |
author |
Keogh, Mandy J. Ridgway, Sam H. |
author_facet |
Keogh, Mandy J. Ridgway, Sam H. |
author_sort |
Keogh, Mandy J. |
title |
Neuronal Fiber Composition of the Corpus Callosum Within Some Odontocetes |
title_short |
Neuronal Fiber Composition of the Corpus Callosum Within Some Odontocetes |
title_full |
Neuronal Fiber Composition of the Corpus Callosum Within Some Odontocetes |
title_fullStr |
Neuronal Fiber Composition of the Corpus Callosum Within Some Odontocetes |
title_full_unstemmed |
Neuronal Fiber Composition of the Corpus Callosum Within Some Odontocetes |
title_sort |
neuronal fiber composition of the corpus callosum within some odontocetes |
publisher |
Wiley |
publishDate |
2008 |
url |
http://dx.doi.org/10.1002/ar.20701 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Far.20701 http://onlinelibrary.wiley.com/wol1/doi/10.1002/ar.20701/fullpdf |
genre |
Killer Whale toothed whales Killer whale |
genre_facet |
Killer Whale toothed whales Killer whale |
op_source |
The Anatomical Record volume 291, issue 7, page 781-789 ISSN 1932-8486 1932-8494 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ar.20701 |
container_title |
The Anatomical Record |
container_volume |
291 |
container_issue |
7 |
container_start_page |
781 |
op_container_end_page |
789 |
_version_ |
1793768594929090560 |