Files in this item

FilesDescriptionFormat

application/pdf

application/pdf9904619.pdf (4MB)Restricted to U of Illinois
(no description provided)PDF

Description

Title:Morphometric Theory and Application to Evolution and Biogeography in Argopecten (Bivalvai: Pectinidae) From the Southeastern United States
Author(s):Werner, John Edward
Doctoral Committee Chair(s):Jay Bass; Blake, Daniel B.
Department / Program:Geology
Discipline:Geology
Degree Granting Institution:University of Illinois at Urbana-Champaign
Degree:Ph.D.
Genre:Dissertation
Subject(s):Biology, Zoology
Abstract:Evolution in the Argopecten irradians lineage shows early onset of circular disk morphologies similar to modern forms, with subsequent evolution through punctuated selection against more archaic (asymmetrical) morphologies, likely associated with Pleistocene glaciations. That speciation mirrors macroevolution suggests self-similarity in evolution. Convergence on circular disk shape (a local maximum of swimming efficiency) seen in numerous pectinid lineages implies adaptative evolution and precludes genetic drift.
Issue Date:1998
Type:Text
Language:English
Description:138 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1998.
URI:http://hdl.handle.net/2142/86550
Other Identifier(s):(MiAaPQ)AAI9904619
Date Available in IDEALS:2015-09-28
Date Deposited:1998


This item appears in the following Collection(s)

Item Statistics