Coevolution of the Pacific salmon and Pacific Rim topography

Research Article| December 01, 2000 Coevolution of the Pacific salmon and Pacific Rim topography David R. Montgomery David R. Montgomery 1Department of Geological Sciences, University of Washington, Seattle, Washington 98195, USA Search for other works by this author on: GSW Google Scholar Author and Article Information David R. Montgomery 1Department of Geological Sciences, University of Washington, Seattle, Washington 98195, USA Publisher: Geological Society of America Received: 11 Apr 2000 Revision Received: 24 Aug 2000 Accepted: 15 Sep 2000 First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2000) 28 (12): 1107–1110. https://doi.org/10.1130/0091-7613(2000)28<1107:COTPSA>2.0.CO;2 Article history Received: 11 Apr 2000 Revision Received: 24 Aug 2000 Accepted: 15 Sep 2000 First Online: 02 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 David R. Montgomery; Coevolution of the Pacific salmon and Pacific Rim topography. Geology 2000;; 28 (12): 1107–1110. doi: https://doi.org/10.1130/0091-7613(2000)28<1107:COTPSA>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 SocietyGeology Search Advanced Search Abstract The late Cenozoic radiation of the Pacific salmon and trout (Oncorhynchus spp.) resulted in five species that are widely distributed in western North America and occupy distinct parts of river networks. The dramatic radiation of the Pacific salmon contrasts with the history of the Atlantic salmon, which have evolved little since the divergence of Oncorhynchus. Conventional hypotheses for the radiation of the Pacific salmon stress geographic isolation due to Pleistocene glaciations, but paleontological evidence dates their speciation to the middle Miocene to early Pliocene. Tertiary marine cooling may have spurred the development of anadromy in salmon and other fish, but does not readily explain the different evolutionary trajectories for the Pacific and Atlantic salmon. The timing of Pacific salmon speciation corresponds to significant physiographic changes around the Pacific Rim, suggesting that increased topographic diversity due to an active tectonic regime contributed to the evolution of the Pacific salmon. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.