Conservation and Population Ecology of Bahama Abaco Parrot - Draft #1

This topic submitted by Paul Duff ( duffpe@muohio.edu) at 4:06 PM on 4/28/09.

A class picture at Poas Volcano in Costa Rica, 1997.

Tropical Field Courses -Western Program-Miami University


Paul Duff
GLG 413
Conservation and Population Ecology of Bahama Abaco Parrot

Paper will be giving an overview of the endangered Bahama Parrot (2 sub-populations still exist on Abaco and Inagua) as well as the implications of having such low numbers of the species left (population ecology significance). The conservation of such a rare species is a small step to the global outlook of conservation and preservation into the future.


I. Introduction Ð Overview of species


A) Morphology Ð Distinctions from other parrot species
Due to Gene Flow/Founder Effect/Allopatric Speciation (Hypothesis)
B) Habitat (Past and Present) - Adaptations
C) Habits & Behavior Ð Diet


II. Population Status


A) Population status/numbers (Past and Present)
B) Distinction between Abaco and Inagua Populations
B) Hypothesis as to reason for decline


III. Population Ecology Significance


A) Genetic Drift - Bottlenecking
B) Allele Frequency
C) Heterozygosity decrease
D) Effect on future populations

References:

Rivera-Milan FF, Collazo JA, Stahala C, Moore WJ, Davis A, Herring G, Steinkamp M, Pagliaro R, Thompson JL, Bracey W. 2005. Estimation of density and population size and recommendations for monitoring trends of Bahama parrots on Great Abaco and Great Inagua. Wildlife Society Bulletin 33(3): 823-834.

Gnam R, Burchsted A. 1991. Population estimates for the Bahama Parrot on Abaco Island Bahamas West Indes. Journal of Field Ornithology 62(1): 139-146.

Snyder NFR, King WB, Kepler CB. 1981. Biology and Conservation of the Bahama Parrot Amazona leucocephala bahamensis. Living Bird 19: 91-114.

Stahala C. 2008. Seasonal movements of the Bahama Parrot (Amazona leucocephala bahamensis) between pine and hardwood forests: Implications for habitat conservation. Ornitologia Neotropical 19(Suppl. S): 165-171.

Taylor JE. 2008. Environmental variation, fluctuating selection and genetic drift in subdivided populations. Theoretical Population Biology 74(3): 233-250.

Nagylaki T. 1983. Evolution of a large population under gene conversion. Proceedings of the National Academy of Sciences of the United States of America 80(19): 5941-5945.

Dunn SJ, Byers JA. 2008. Determinants of survival and fecundity through a population bottleneck in Pronghorn (Antilocapra americana). Journal of Mammalogy 89(5): 1124-1129.


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