Thoracic and Coracoid Arteries In Two Families of Birds, Columbidae and Hirundinidae

Thoracic and Coracoid Arteries In Two Families of Birds, Columbidae and Hirundinidae

Thoracic and Coracoid Arteries In Two Families of Birds, Columbidae and HirundinidaeMost descriptions of the circulatory system...
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SKU: gb-33558-ebook
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Author: Jenkinson, Marion Anne
Format: eBook
Language: English
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Thoracic and Coracoid Arteries In Two Families of Birds, Columbidae and Hirundinidae

Thoracic and Coracoid Arteries In Two Families of Birds, Columbidae and Hirundinidae

$19.99 $9.99

Thoracic and Coracoid Arteries In Two Families of Birds, Columbidae and Hirundinidae

$19.99 $9.99
Author: Jenkinson, Marion Anne
Format: eBook
Language: English

Thoracic and Coracoid Arteries In Two Families of Birds, Columbidae and Hirundinidae

Most descriptions of the circulatory system of birds, largely the work of Glenny, have dealt with arteries of the neck and thorax in a wide variety of species. As a result of his work, Glenny offered several hypotheses concerning the phylogenetic, hence taxonomic, significance of differences in some of these vessels. He also described six types of thoracic arterial arrangements and stated that these categories might represent various levels of evolution (Glenny, 1955:543-544). The families Columbidae (pigeons) and Hirundinidae (swallows) have two nearly extreme arterial types described by Glenny, and are universally acknowledged as monophyletic. Differences within the families, therefore, can be considered as valid intrafamilial differences. I have investigated the thoracic and coracoid arteries and their branches in members of these two families to determine the degree of individual variability of the vessels, and the possible causes of interspecific and intrafamilial differences. [Pg 556] All specimens studied are in The University of Kansas Museum of Natural History. They were preserved in alcohol and their blood vessels were not injected. Dissections were made with the aid of a binocular microscope at magnifications of 10 and 20. ......Buy Now (To Read More)

Product details

Ebook Number: 33558
Author: Jenkinson, Marion Anne
Release Date: Aug 28, 2010
Format: eBook
Language: English

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