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Gene Flow Between Populations in the Alapaha and Santa Fe
RiversJoseph A. Kirkley
Biology 7020
Spring 2010
Background
• Alapaha River– Originates in Dooly
Co. GA– Flows SW to the
Suwannee– Subterranean Flow for
approximately 30km during normal water levels
– Floods in times of high water
• Santa Fe River– Originates in Alachua
Co. FL– Flows SE to the
Suwannee– Subterranean Flow for
approximately 3.2km during normal water levels
– Floods in times of high water
Maximum Likelihood estimates for Upper and Lower Alapaha (Micropterus salmoides)
Population [x]
Loc. Ln(L/L0) Theta (# of migrants/generation)
M (m/mu)
(Migration Rate/Mutation rate)
[+=receiving population]
[x Ne mu] Donor Pop 1,+
Donor Pop 2,+
1:Upper 1 0.634 0.0110 - 5.663
2: Lower 1 0.634 6.45e+10 59.285 -
Maximum Likelihood estimates for Upper and Lower Santa Fe (Micropterus
salmoides)Population [x]
Loc. Ln(L/L0) Theta (# of migrants/generation)
M (m/mu)
(Migration Rate/Mutation rate)
[+=receiving population]
[x Ne mu] Donor Pop 1,+
Donor Pop 2,+
1:Upper 1 93.083 0.0092 - 3.07e-07
2: Lower 1 93.083 0.2038 53.986 -
Maximum Likelihood estimates for Alapaha verses Santa Fe (Micropterus salmoides)
Population [x]
Loc. Ln(L/L0) Theta (# of migrants/generation)
M (m/mu) (Migration Rate/Mutation rate)
[+=receiving population]
[x Ne mu] Donor Pop 1,+
Donor Pop 2,+
1:Upper 1 15.590 0.0125 - 158.54
2: Lower 1 15.590 0.0476 536.38 -
Acknowledgements
Dr. John F. Elder for his patience and guidance
Dr. David Bechler for his $0.02
Landon Lasseter for without him none of this would have been possible
Josh Rouse for preliminary analysis and field work
References
Beerli, P and J. Felsenstein (1999) Maximum-likelihood estimation of migration ratres and effective population numbers in two poopulations using a coalescent approach. Genetics, 152(2):763-73 1999
Beerli, P. and J. Felsenstein (2001) Maximum likelihood estimation of a migration matrix and effective population sizes in n subpopulations by using a coalescent approach. Proceedings of the National Academy of Sciences of the USA, 98(8):4563-4568