Three-Dimensional Bookstein Shape Coordinates and Functional Morphology of Passive Suspension Feeding in Composita Brachiopoda, AthyrididaReportar como inadecuado




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Functional morphology, Suspension feeding, Shape analysis

Collins, Benjamin M. J.

Supervisor and department: Leighton, Lindsey R. Earth and Atmospheric Sciences

Examining committee member and department: Leys, Sally P. Biological Sciences Zonneveld, J. P. Earth and Atmospheric Sciences

Department: Department of Earth and Atmospheric Sciences

Specialization:

Date accepted: 2013-12-04T10:25:39Z

Graduation date: 2014-06

Degree: Master of Science

Degree level: Master's

Abstract: The effects of shell morphology on passive fluid circulation are examinedin Late Mississippian through Late Pennsylvanian CompositaBrachiopoda, Athyridida from Texas, Kentucky, and Iowa. The firstthree-dimensional derivation of Bookstein shape coordinates is given inassociation with an in-depth discussion of the advantages and potentialdrawbacks of the technique for geometric shape analysis applications.Three-dimensional morphometric analysis of Composita shows a singleshape distribution corresponding to progressive differentiation of thecommissure into vertically displaced parasulcate, lateral, and sulcategapes with increasing shell size, indicating an ontogenetic shape changetrend. Gaping models of three specimens including a simulatedlophophore in the largest specimen representative of different ontogeneticstages were used to observe the effects of morphology on passive flowcirculation in a recirculating flume tank. All models showedmedially-inhalant and laterally-exhalant passive circulation when orientedwith the sulcus facing upstream, with more vigorous flow associated withincreasing shell size.

Language: English

DOI: doi:10.7939-R3KP7TZ3M

Rights: Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.





Autor: Collins, Benjamin M. J.

Fuente: https://era.library.ualberta.ca/



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