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Mass Extinctions and Genetic Polymorphism in the “Killer Clam,” Tridacna

1973; Geological Society of America; Volume: 84; Issue: 10 Linguagem: Inglês

10.1130/0016-7606(1973)84 2.0.co;2

1943-2674

James W. Valentine, Dennis Hedgecock, Gary S. Zumwalt, Francisco J. Ayala,

Paleontology and Stratigraphy of Fossils

Research Article| October 01, 1973 Mass Extinctions and Genetic Polymorphism in the “Killer Clam,” Tridacna JAMES W. VALENTINE; JAMES W. VALENTINE 1Department of Geology, University of California, Davis, Davis, California 95616 Search for other works by this author on: GSW Google Scholar DENNIS HEDGECOCK; DENNIS HEDGECOCK 1Department of Geology, University of California, Davis, Davis, California 95616 Search for other works by this author on: GSW Google Scholar GARY S. ZUMWALT; GARY S. ZUMWALT 1Department of Geology, University of California, Davis, Davis, California 95616 Search for other works by this author on: GSW Google Scholar FRANCISCO J. AYALA FRANCISCO J. AYALA 2Department of Genetics, University of California, Davis, Davis, California 95616 Search for other works by this author on: GSW Google Scholar GSA Bulletin (1973) 84 (10): 3411–3414. https://doi.org/10.1130/0016-7606(1973)84 2.0.CO;2 Article history first online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation JAMES W. VALENTINE, DENNIS HEDGECOCK, GARY S. ZUMWALT, FRANCISCO J. AYALA; Mass Extinctions and Genetic Polymorphism in the “Killer Clam,” Tridacna. GSA Bulletin 1973;; 84 (10): 3411–3414. doi: https://doi.org/10.1130/0016-7606(1973)84 2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract Mass extinctions of marine invertebrates have been attributed to genetic depauperation in specialized lineages. Tridacna maxima is a plausible modern analog of the lineages that were commonly associated with mass extinctions; it is restricted to a relatively stable biogeographic province, lives in shallow water, is highly specialized, and is associated with reef communities. Our studies show, however, that it is highly polymorphic and heterozygotic, and thus fails to support the depauperate gene-pool hypothesis of mass extinction. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.