Paleobiology
Published by: The Paleontological Society
Paleobiology 31(sp5):133-145. 2005
doi: http://dx.doi.org/10.1666/0094-8373(2005)031[0133:TDOES]2.0.CO;2
The dynamics of evolutionary stasis
Niles Eldredgea, John N. Thompsonb, Paul M. Brakefieldc, Sergey Gavriletsd, David Jablonskie, Jeremy B. C. Jacksonf, Richard E. Lenskig, Bruce S. Liebermanh, Mark A. McPeeki, and William Miller IIIj
aNiles Eldredge. Division of Paleontology, American Museum of Natural History, Central Park West at Seventy-ninth Street, New York, New York 10024. epunkeek@amnh.org
bJohn N. Thompson. Department of Ecology and Evolutionary Biology, A316 Earth and Marine Sciences Building, University of California, Santa Cruz, California 95060. thompson@biology.ucsc.edu
cPaul M. Brakefield. Institute of Biology, Leiden University, Post Office Box 9516, 2300 RA Leiden, The Netherlands. brakefield@rulsfb.leidenuniv.nl
dSergey Gavrilets. Department of Ecology and Evolutionary Biology and Department of Mathematics, University of Tennessee, Knoxville, Tennessee 37996. gavrila@tiem.utk.edu
eDavid Jablonski. Department of Geophysical Sciences, 5734 South Ellis Avenue, University of Chicago, Chicago, Illinois 60637. djablons@midway.uchicago.edu
fJeremy B. C. Jackson. Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92039. jbjackson@ucsd.edu
gRichard E. Lenski. Center for Microbial Ecology, Michigan State University, East Lansing, Michigan 48824. lenski@pilot.msu.edu
hBruce S. Lieberman. Departments of Geology and Ecology and Evolutionary Biology, University of Kansas, 120 Lindley Hall, Lawrence, Kansas 66045. blieber@ku.edu
iMark A. McPeek. Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire 03755. mark.mcpeek@dartmouth.edu
jWilliam Miller III. Department of Geology, Humboldt State University, 1 Harpst Street, Arcata, California 95521. wm1@axe.humboldt.edu
Abstract
The fossil record displays remarkable stasis in many species over long time periods, yet studies of extant populations often reveal rapid phenotypic evolution and genetic differentiation among populations. Recent advances in our understanding of the fossil record and in population genetics and evolutionary ecology point to the complex geographic structure of species being fundamental to resolution of how taxa can commonly exhibit both short-term evolutionary dynamics and long-term stasis.
Accepted: April 17, 2004
Literature Cited
Figure 1. Species stasis in the face of ongoing population-level evolution. Species (lineages 1, 2, and 3 on the left) exhibit negligible net phenotypic changes, while their component population systems (on the right) continually differentiate, fuse, or go extinct. Stasis is occasionally broken by establishment and spread of novel phenotypes (s); when this is matched with ecological opportunity, highly differentiated new lineages (sm) may be formed that eventually develop internal (population) dynamics and geographic structure resulting, again, in stasis. (In this view, species-lineages consist of anastomosing population systems and, at the same time, belong to clades composed of similar lineages)
Figure 2. Analysis of a potential evolutionary constraint. A, Occupation by species of the butterfly genus Bicyclus of morphological space for the pattern of the forewing eyespot size. Names of representatives from among the 80 or so species are given. B, Responses obtained over 25 generations of artificial selection in replicate lines of B. anynana. Results show that butterflies similar to each corner pattern were produced from standing genetic variation in a single laboratory stock, including one morphology not seen in any extant species. Crosses indicate butterflies from the base population, and open symbols show samples from generation 25 in each direction of selection (green arrow) together with a representative forewing. Redrawn from Beldade et al. 2002
Figure 3. Schematic diagram showing temporal and environmental (spatial) patterns of morphological change in two species of Middle Devonian brachiopods, measured as Mahalanobis D2 values from canonical discriminant analysis of morphometric data. Each of these species occurred in five distinct environments over a period of 5 Myr. Note the oscillatory nature of morphological change in each species (left and middle panels). The morphological changes of Mediospirifer audaculus sampled from the five distinct environments (far right panel) are also oscillatory, but have larger D2 distance excursions than when samples of the species are lumped as a whole (see middle panel). Moreover, changes within individual environments tend to cancel out, leading to negligible net change for the species as a whole
Cited by
Online publication date: 1-May-2012.
CrossRef
Online publication date: 27-Apr-2012.
CrossRef
Online publication date: 30-Mar-2012.
CrossRef
Online publication date: 7-Mar-2012.
CrossRef
Online publication date: 1-Mar-2012.
CrossRef
Online publication date: 1-Mar-2012.
CrossRef
CrossRef
Online publication date: 17-Jan-2012.
CrossRef
Online publication date: 2-Jan-2012.
CrossRef
Online publication date: 1-Dec-2011.
CrossRef
Online publication date: 1-Dec-2011.
CrossRef
Online publication date: 1-Sep-2011.
CrossRef
Online publication date: 23-Aug-2011.
CrossRef
Online publication date: 17-Aug-2011.
CrossRef
Online publication date: 3-Aug-2011.
CrossRef
Online publication date: 27-Jul-2011.
CrossRef
Online publication date: 7-Jul-2011.
CrossRef
Online publication date: 8-Jun-2011.
CrossRef
CrossRef
Online publication date: 29-Apr-2011.
CrossRef
Online publication date: 7-Apr-2011.
CrossRef
Online publication date: 1-Mar-2011.
Abstract & References : Full Text : PDF (1173 KB) : Supplementary Materials : Rights & Permissions
Online publication date: 1-Dec-2010.
Abstract & References : Full Text : PDF (2378 KB) : Rights & Permissions
Online publication date: 1-Dec-2010.
CrossRef
Online publication date: 1-Dec-2010.
CrossRef
Online publication date: 17-Nov-2010.
CrossRef
Online publication date: 1-Nov-2010.
CrossRef
Online publication date: 1-Oct-2010.
CrossRef
Online publication date: 1-Sep-2010.
CrossRef
Online publication date: 1-Jul-2010.
CrossRef
Online publication date: 1-Jun-2010.
CrossRef
Online publication date: 1-May-2010.
CrossRef
Online publication date: 1-Jan-2010.
CrossRef
CrossRef
CrossRef
Online publication date: 1-Dec-2009.
Abstract & References : Full Text : PDF (2201 KB) : Rights & Permissions
Online publication date: 29-Oct-2009.
CrossRef
Online publication date: 1-Oct-2009.
CrossRef
Online publication date: 1-Sep-2009.
CrossRef
Online publication date: 1-Aug-2009.
Abstract & References : Full Text : PDF (332 KB) : Rights & Permissions
Online publication date: 1-Jun-2009.
CrossRef
Online publication date: 6-Feb-2009.
CrossRef
Online publication date: 1-Jan-2009.
CrossRef
Online publication date: 1-Jan-2009.
CrossRef
Online publication date: 1-Dec-2008.
CrossRef
Online publication date: 1-Nov-2008.
CrossRef
Online publication date: 1-Sep-2008.
Abstract & References : Full Text : PDF (385 KB) : Rights & Permissions
Online publication date: 26-Aug-2008.
CrossRef
Online publication date: 1-Jun-2008.
CrossRef
Online publication date: 23-Apr-2008.
CrossRef
Online publication date: 1-Apr-2008.
Abstract & References : Full Text : PDF (728 KB) : Rights & Permissions
Online publication date: 1-Mar-2008.
CrossRef
Online publication date: 1-Feb-2008.
CrossRef
Online publication date: 29-Dec-2007.
CrossRef
Online publication date: 1-Dec-2007.
CrossRef
Online publication date: 20-Nov-2007.
CrossRef
Online publication date: 3-Aug-2007.
CrossRef
Online publication date: 1-Jul-2007.
CrossRef
Online publication date: 1-Jul-2007.
CrossRef
Online publication date: 1-Jun-2007.
CrossRef
Online publication date: 1-Mar-2007.
Abstract & References : Full Text : PDF (791 KB) : Rights & Permissions
Online publication date: 1-Feb-2007.
CrossRef
Online publication date: 1-Jan-2007.
CrossRef
Online publication date: 1-Jan-2007.
CrossRef
Online publication date: 1-Jan-2007.
CrossRef
Online publication date: 1-Mar-2006.
Abstract & References : Full Text : PDF (302 KB) : Rights & Permissions
Online publication date: 1-Mar-2006.
Citation : Full Text : PDF (112 KB) : Rights & Permissions
Online publication date: 1-Mar-2006.
CrossRef
CrossRef





