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Oxygen Transport to Tissue XXXIIMicropores in the Vitteline Layer of the Eggs of the Dragonfly Oligoaeshna pryeri: A Preliminary Observation from the Viewpoint of Oxygen Uptake

Oxygen Transport to Tissue XXXII: Micropores in the Vitteline Layer of the Eggs of the Dragonfly... [In dragonfly eggs, oxygen diffusing in, and carbon dioxide diffusing out, encounter barriers in the shell.According to Tullett and Board, in avian eggs themost important of these barriers results from the geometry of the pores through the shells. As in birds, dragonfly egg shells consist of three layers: the exochorion, endochorion and the innermost vitellinemembrane.Trueman has described pores and fine anchorlike structures in the endochorion but the vitelline membrane does not seem to have been studied. In the present work we have used scanning electron microscopy to examine the vitelline membrane in hatching eggs of Oligoaeschna pryeri. We have assumed that the numerous openings seen on the micrographs are pores through the membrane.] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png

Oxygen Transport to Tissue XXXIIMicropores in the Vitteline Layer of the Eggs of the Dragonfly Oligoaeshna pryeri: A Preliminary Observation from the Viewpoint of Oxygen Uptake

Part of the Advances in Experimental Medicine and Biology Book Series (volume 701)
Editors: LaManna, Joseph C.; Puchowicz, Michelle A.; Xu, Kui; Harrison, David K; Bruley, Duane F.

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References (4)

Publisher
Springer US
Copyright
© Springer Science+Business Media, LLC 2011
ISBN
978-1-4419-7755-7
Pages
307 –310
DOI
10.1007/978-1-4419-7756-4_41
Publisher site
See Chapter on Publisher Site

Abstract

[In dragonfly eggs, oxygen diffusing in, and carbon dioxide diffusing out, encounter barriers in the shell.According to Tullett and Board, in avian eggs themost important of these barriers results from the geometry of the pores through the shells. As in birds, dragonfly egg shells consist of three layers: the exochorion, endochorion and the innermost vitellinemembrane.Trueman has described pores and fine anchorlike structures in the endochorion but the vitelline membrane does not seem to have been studied. In the present work we have used scanning electron microscopy to examine the vitelline membrane in hatching eggs of Oligoaeschna pryeri. We have assumed that the numerous openings seen on the micrographs are pores through the membrane.]

Published: Feb 28, 2011

Keywords: Numerous Opening; Pore Area; Pore Density; Vitelline Membrane; Paper Tissue

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