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Start Over Author "Johnson, Warren E" Journal molecular ecology
10 results on '"Johnson, Warren E"'

8. Disparate phylogeographic patterns of molecular genetic variation in four closely related South American small cat species

Author

Johnson, Warren E., primary, Slattery, Jill Pecon, additional, Eizirik, Eduardo, additional, Kim, Jae-Heup, additional, Menotti Raymond, Marilyn, additional, Bonacic, Cristian, additional, Cambre, Richard, additional, Crawshaw, Peter, additional, Nunes, Adauto, additional, Seuanez, Hector N., additional, Martins Moreira, Miguel Angelo, additional, Seymour, Kevin L., additional, Simon, Faical, additional, Swanson, William, additional, and O'Brien, Stephen J., additional

Published
1999
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9. The influence of the arid Andean high plateau on the phylogeography and population genetics of guanaco ( Lama guanicoe) in South America.

Author

Marin, Juan C., González, Benito A., Poulin, Elie, Casey, Ciara S., and Johnson, Warren E.

Subjects
GUANACO, GENETICS, PHYLOGEOGRAPHY, MICROSATELLITE repeats, POPULATION genetics, BEHAVIOR
Abstract

A comprehensive study of the phylogeography and population genetics of the largest wild artiodactyl in the arid and cold-temperate South American environments, the guanaco ( Lama guanicoe) was conducted. Patterns of molecular genetic structure were described using 514 bp of mt DNA sequence and 14 biparentally inherited microsatellite markers from 314 samples. These individuals originated from 17 localities throughout the current distribution across Peru, Bolivia, Argentina and Chile. This confirmed well-defined genetic differentiation and subspecies designation of populations geographically separated to the northwest ( L. g. cacsilensis) and southeast ( L. g. guanicoe) of the central Andes plateau. However, these populations are not completely isolated, as shown by admixture prevalent throughout a limited contact zone, and a strong signal of expansion from north to south in the beginning of the Holocene. Microsatellite analyses differentiated three northwestern and 4-5 southeastern populations, suggesting patterns of genetic contact among these populations. Possible genetic refuges were identified, as were source-sink patterns of gene flow at historical and recent time scales. Conservation and management of guanaco should be implemented with an understanding of these local population dynamics while also considering the preservation of broader adaptive variation and evolutionary processes. [ABSTRACT FROM AUTHOR]

Published
2013
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10. Development of microsatellite markers in the guanaco, Lama guanicoe: utility for South American camelids.

Author

Sarno, Ronald J., David, Victor A., Franklin, William L., O’Brien, Stephen J., and Johnson, Warren E.

Subjects
GUANACO, MICROSATELLITE repeats, GENETICS
Abstract

Describes the development and characteristics of microsatellite primers designed for the guanaco, Lama guanicoe and their utility for the South American camelids. Isolation of microsatellite loci using a modified non-radioactive capture-hybridization method; Annealing of the biotinylated capture probe to the linkered DNA.

Published
2000
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