University of Illinois Urbana-Champaign

Morphometric Theory and Application to Evolution and Biogeography in Argopecten (Bivalvai: Pectinidae) From the Southeastern United States

Werner, John Edward

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Description

Title
Morphometric Theory and Application to Evolution and Biogeography in Argopecten (Bivalvai: Pectinidae) From the Southeastern United States
Author(s)
Werner, John Edward
Issue Date
1998
Doctoral Committee Chair(s)
  • Jay Bass
  • Blake, Daniel B.
Department of Study
Geology
Discipline
Geology
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Biology, Zoology
Language
eng
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.
Graduation Semester
1998
Type of Resource
text
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http://hdl.handle.net/2142/86550

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