Award Abstract # 9021902
Demography and Fragmentation in an Avian Species: A Genetic Analysis

NSF Org: DEB
Division Of Environmental Biology
Recipient: ARCHBOLD EXPEDITIONS, INC.
Initial Amendment Date: February 28, 1991
Latest Amendment Date: February 28, 1991
Award Number: 9021902
Award Instrument: Standard Grant
Program Manager: Gregory J. McCants
DEB
 Division Of Environmental Biology
BIO
 Directorate for Biological Sciences
Start Date: February 15, 1991
End Date: July 31, 1993 (Estimated)
Total Intended Award Amount: $170,571.00
Total Awarded Amount to Date: $170,571.00
Funds Obligated to Date: FY 1991 = $170,571.00
History of Investigator:
  • John Fitzpatrick (Principal Investigator)
    jwf7@cornell.edu
  • Glen Woolfenden (Co-Principal Investigator)
  • David McDonald (Co-Principal Investigator)
  • Wayne Potts (Co-Principal Investigator)
Recipient Sponsored Research Office: Archbold Expeditions, Inc.
123 MAIN DR
VENUS
FL  US  33960-2039
(863)465-2571
Sponsor Congressional District: 18
Primary Place of Performance: DATA NOT AVAILABLE
Primary Place of Performance
Congressional District:
Unique Entity Identifier (UEI): ZC2GY8VUCAE9
Parent UEI:
NSF Program(s): Evolutionary Processes
Primary Program Source:  
Program Reference Code(s):
Program Element Code(s): 112700
Award Agency Code: 4900
Fund Agency Code: 4900
Assistance Listing Number(s): 47.074

ABSTRACT

This project investigates the genetic consequences of being an extreme ecological specialist in a rare and vanishing habitat. The Florida Scrub Jay is a federally Threatened bird species, restricted to a habitat that is rapidly being eliminated by man. Twenty-two years of detailed study of a marked population have shown that these jays have an unusual social system, and rarely move more than a few territories from where they were hatched. This very limited dispersal may result in rapid development of genetic changes over short distances, especially within a habitat that is highly fragmented. A variety of sophisticated genetic techniques (DNA 'fingerprinting' and sequencing) will be used to examine genetic variation at both local and regional scales. Specific goals are to: 1) confirm that reproduction takes place only by the mated pair on each territory (i.e., extra-pair or extra-territorial fertilizations are rare or absent); 2) test whether levels of inbreeding affect lifetime reproductive performance; 3) compare the effects of distance, degree of habitat isolation, and population size on genetic variation and differentiation, and 4) test whether these genetic effects match those predicted by long-term demographic data. Besides its theoretical applications, this study will further the protection of biodiversity by showing how habitat loss and fragmentation affect the genetic makeup of ecologically specialized species.

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