Armando Geraldes
CONTACT INFORMATION
-
Ecology
and Evolutionary Biology
333 Biosciences West
1041 E. Lowell
University of Arizona
Tucson, AZ 85721
Tel: (520) 626-4747
FAX: (520) 621-9190
E-mail: geraldes@email.arizona.edu
RESEARCH
INTERESTS
I am interested in understanding how the genomic location and
properties of a locus can affect its evolutionary history. In particular,
I would like to understand how these contribute to the outcome
of the speciation process. For my PhD I worked on the genetics
of speciation in Oryctolagus cuniculus (European rabbit),
by comparing patterns of introgression at different loci (namely,
mtDNA, Y and X-linked loci) across a hybrid zone. For my post doctoral
work I am taking a similar approach to understand the genetics
of speciation in house mice. For this we are collecting polymorphism
data in three species ( Mus domesticus , M. musculus and M.
castaneus ) for a large number of loci scattered across the
genome. We are specifically focusing on regions of the genome with
different recombination rates and X-autosome comparisons. We hope
to understand why these loci behave so differently across the hybrid
zone, and whether that can give us some insight about the mechanisms
involved in reproductive isolation between species.
PUBLICATIONS
Salcedo, T., Geraldes, A., and Nachman, M. W. 2007. Nucleotide variation in wild and inbred mice. Genetics, 177: 2277-2291.
Geraldes, A., Ferrand, N. and Nachman, M. W. 2006. Contrasting patterns of introgression at X-linked loci across the hybrid zone between subspecies of the European rabbit (Oryctolagus cuniculus). Genetics, 173: 919-933.
Geraldes, A. and Ferrand, N. 2006. A 7-bp insertion in the 3' untranslated region suggests the duplication and concerted evolution of the rabbit Sry gene. Genetics Selection and Evolution, 38: 313-320.
Geraldes, A., Rogel-Gaillard, C. and Ferrand, N. 2005. High levels of nucleotide diversity in the European rabbit (Oryctolagus cuniculus) SRY gene. Animal Genetics, 36: 349-351.
Geraldes, A., Rogel-Gaillard, C., Piumi, F., Borgeuax, N., Ferrand, N.. The European rabbit SRY gene. A useful marker for phylogeography?. Phylogeography in Southern European Refugia: Evolutionary perspectives on the origins and conservation of European biodiversity, Vairão, Portugal, March 2002. (Poster presentation)
Geraldes, A., Rogel-Gaillard, C., Piumi, F., Borgeuax, N., Ferrand, N.. Phylogeography of the rabbit (Oryctolagus cuniculus) Y chromosome in Southern Europe: evidence for two highly divergent lineages. SMBE,. Sorrento, Italy, June 2002. (Poster presentation)
Geraldes, A. and Ferrand, N.. Evidence for two highly divergent Y chromosome lineages in rabbit (Oryctolagus cuniculus) populations from the Iberian Peninsula: implications for the evaluation of male-mediated gene flow. "Sex-specific genetic markers", University of Lausanne, La Sage, Switzerland. September 2002. (Oral presentation)
Geraldes, A., Nachman, M. W., Ferrand, N.. Contrasting patterns of introgression at X-linked loci across the European rabbit hybrid zone. SMBE, State College, PA, June 2004. (Poster presentation)
Geraldes, A., Ferrand, N., Nachman, M. W.. Contrasting patterns of introgression across a contact zone between subspecies of european rabbit (Oryctolagus cuniculus). SMBE, ASU, AZ, May 2006. (Oral presentation)
Geraldes, A., Ferrand, N., Rambo, T., Wing, R., Nachman, M. W.. A mechanism for the preservation of males : extensive gene conversion drives the evolution of the Sry gene in european rabbits (Oryctolagus cuniculus). SMBE, Dalhousie University, NS, Halifax, June 2007. (Poster presentation)
Geraldes, A., Basset, P., Gibson, B. Smith, K. L., Nachman, M. W.. Gene genealogies among species of house mice (Mus spp.). SMBE, Dalhousie University, NS, Halifax, June 2007. (Poster presentation)
2000 Universidade do Porto, Portugal. Biology degree
2006 Universidade do Porto, Portugal. PhD