text-only page produced automatically by Usablenet Assistive Skip all navigation and go to page content Skip top navigation and go to directorate navigation Skip top navigation and go to page navigation
National Science Foundation
Awards
design element
Search Awards
Recent Awards
Presidential and Honorary Awards
About Awards
Grant Policy Manual
Grant General Conditions
Cooperative Agreement Conditions
Special Conditions
Federal Demonstration Partnership
Policy Office Website



Award Abstract #0416085

The Evolution of Placentas in the Poeciliid Fishes: An Empirical Study of the Evolution of Complexity

NSF Org: DEB
Division of Environmental Biology
divider line
Initial Amendment Date: August 24, 2004
divider line
Latest Amendment Date: April 9, 2009
divider line
Award Number: 0416085
divider line
Award Instrument: Continuing grant
divider line
Program Manager: Nancy J. Huntly
DEB Division of Environmental Biology
BIO Directorate for Biological Sciences
divider line
Start Date: September 1, 2004
divider line
End Date: August 31, 2010 (Estimated)
divider line
Awarded Amount to Date: $844,004.00
divider line
Investigator(s): David Reznick gupy@ucrac1.ucr.edu (Principal Investigator)
Theodore Garland (Co-Principal Investigator)
Mark Springer (Co-Principal Investigator)
divider line
Sponsor: University of California-Riverside
Office of Research
RIVERSIDE, CA 92521-1000 (951)827-5535
divider line
NSF Program(s): EVOLUTIONARY PROCESSES CLUSTER,
PHYLOGENETIC SYSTEMATICS,
POPULATION DYNAMICS,
Systematics & Biodiversity Sci,
EVOLUTIONARY ECOLOGY
divider line
Program Reference Code(s): 1171, 9169, 9229, EGCH, 1355, 9178, 9251, SMET, 1174
divider line
Program Element Code(s): 1127, 1171, 1174, 7374, 7377

ABSTRACT

David Reznick + Michael Ghedotti DEB-0416085 + 0415633 Abstract

The Evolution of Placentas in the Poeciliid Fishes: An Empirical Study of the Evolution of Complexity

The placenta is a complex organ that is a composite of many adaptations that must be well integrated for proper function. David Reznick and Michael Ghedotti will study the evolution of the placenta in the fish family Poeciliidae. They will develop a "family tree", based on DNA sequence and morphology, to determine if the placenta evolved independently on different branches and to define groups of species that do or do not have the placenta. Experiments on 30 species of those fish that are closely related and have different forms of maternal provisioning will test the predictions of a recent theory for the evolution of the placenta. Working together, the biologists will provide insights to refine the theory, while theoreticians will provide insights to suggest new lines of experimental inquiry.

In the Origin of Species, Darwin included a chapter entitled "Difficulties on Theory", considering the most serious challenges to the theory of evolution by natural selection. One was the origin of complex organs: it seemed improbable that evolution could integrate many traits at once. He proposed that complexity could evolve by small steps if each represented an adaptation. These fish provide an opportunity to test Darwin's proposition. The research will also offer multidisciplinary training for students, be relevant to several fields of biology, and present a case study in evolution.


PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH

Note:  When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external site maintained by the publisher. Some full text articles may not yet be available without a charge during the embargo (administrative interval).

Some links on this page may take you to non-federal websites. Their policies may differ from this site.


(Showing: 1 - 10 of 30)
  Show All

Olendorf, R. F. Helen Rodd, David Punzalan, Anne E. Houde, Carla Hurt, David N. Reznick & Kimberly A. Hughes. "Frequency-dependent survival in natural guppy populations," Nature, v.441, 2006.

Pires, M. N., K. McBride*, D. N. Reznick. "Interpopulation Variation in Life-History Traits of Poeciliopsis prolifica: Implications for the Study of Placental Evolution," J. Exp. Zoology, v.307A, 2007.

Ghalambor, C. K., J. K. McKay, S. P. Carroll, and D. N. Reznick. "Adaptive versus non-adaptive phenotypic plasticity and the potential for adaptation to new environments," Functional Ecology, v.21, 2007.

D. Reznick, M. Bryant. "Comparative Long-Term Mark-Recapture Studies of Guppies (Poecilia reticulata): Differences Among High and Low Predation Localities in Growth and Survival," Annals Zoologica Fennici, v.44, 2007.

Bryant, MJ; Reznick, D. "Comparative studies of senescence in natural populations of guppies," AMERICAN NATURALIST, v.163, 2004, p. 55. 

Hughes, KA; Rodd, FH; Reznick, DN. "Genetic and environmental effects on secondary sex traits in guppies (Poecilia reticulata)," JOURNAL OF EVOLUTIONARY BIOLOGY, v.18, 2005, p. 35.   

Lawton, BR; Sevigny, L; Obergfell, C; Reznick, D; O'Neill, RJ; O'Neill, MJ. "Allelic expression of IGF2 in live-bearing, matrotrophic fishes," DEVELOPMENT GENES AND EVOLUTION, v.215, 2005, p. 207.   

Reznick, DN; Ghalambor, CK. "Can commercial fishing cause evolution? Answers from guppies (Poecilia reticulata)," CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES, v.62, 2005, p. 791.   

Reznick, DN; Ghalambor, CK. "Selection in nature: Experimental manipulations of natural populations," INTEGRATIVE AND COMPARATIVE BIOLOGY, v.45, 2005, p. 456. 

Walker, JA; Ghalambor, CK; Griset, OL; McKenney, D; Reznick, DN. "Do faster starts increase the probability of evading predators?," FUNCTIONAL ECOLOGY, v.19, 2005, p. 808.   


(Showing: 1 - 10 of 30)
  Show All




BOOKS/ONE TIME PROCEEDING

David Reznick. "The Origin Then and Now: An interpretive guide to the Origin of Species", 09/01/2008-08/31/2009,  2009, "Princeton University Press, Princeton NJ".

David Reznick. "The Origin Then and Now: An interpretive guide to the Origin of Species", 09/01/2009-08/31/2010,  2009, "Princeton University Press, Princeton NJ".

 

Please report errors in award information by writing to: awardsearch@nsf.gov.

 

 

Print this page
Back to Top of page
  FUNDING   AWARDS   DISCOVERIES   NEWS   PUBLICATIONS   STATISTICS   ABOUT NSF   FASTLANE  
Research.gov  |  USA.gov  |  National Science Board  |  Recovery Act  |  Budget and Performance  |  Annual Financial Report
Web Policies and Important Links  |  Privacy  |  FOIA  |  NO FEAR Act  |  Inspector General  |  Webmaster Contact  |  Site Map
National Science Foundation Logo
The National Science Foundation, 4201 Wilson Boulevard, Arlington, Virginia 22230, USA
Tel: (703) 292-5111, FIRS: (800) 877-8339 | TDD: (800) 281-8749
  Text Only Version