Ph.D., Biological Sciences/Marine Science, University of Alabama, August 2003. 
Dissertation: Systematic analyses of Melongena from Alabama and Florida with post-hurricane recovery of Perdido Key, FL. 
Advisor: Dr. Thomas S. Hopkins.

M.S., Marine Science, University of Alabama, December 1998.
Thesis: A population study of Melongena corona (Gmelin) on Perdido Key, FL. 
Advisor: Dr. Thomas S. Hopkins.

B.S., Environmental Science, Troy State University (now Troy University), June 1995.

Obtained extensive field collection experience of shallow water marine invertebrates in AL and FL.
Visiting investigator, Florida Museum of Natural History
Curation of molluscan specimens, Univ. of Alabama Natural History Museum (Morley Collection).
Microbiology Laboratory Assistant                      Summer 1999-2001, Spring 2000

Chakrabarti R.; S.P. Shepardson; M. Karmakar; R.J. Trdan; J.M. Walker; R. Shandilya; D.T. Stewart;
S. Vijayaraghavan; and W.R. Hoeh. 2009.  Extra-mitochondrial location and likely reproductive function of a female-transmitted cytochrome c oxidase subunit II protein.  Accepted with revisions in Development, Growth and Differentiation.

Chapman, E. G., O. Piontkivska, J. M. Walker, D. T. Stewart, J. P. Curole, W. R. Hoeh. 2008.  Extreme
primary and secondary protein structure variability in the chimeric male-transmitted cytochrome c  oxidase subunit II protein in freshwater mussels: Evidence for an elevated amino acid substitution rate in the face of domain-specific purifying selection. BMC
Evolutionary Biology, 8: article # 165, (16 pgs).  This article is available from:
http://www.biomedcentral.com/1471-2148/8/165

Chapman, E.G., M. E. Gordon, J. M. Walker, B. Lang, D.C. Campbell, G. T. Watters, J. P. Curole, O. Piontkivska, W. R. Hoeh. 2008. Evolutionary relationships of Popenaias popeii and the early evolution of Lampsiline Bivalves (Unionidae): Phylogenetic analyses of DNA and amino acid sequences from F and M mitochondrial genomes. Malacologia, 50(1-2): 303-318. 

Chakrabarti R.; J.M. Walker; E.G. Chapman; S.P. Shepardson; R.J. Trdan; J.P. Curole; G.T. Watters;
D.T. Stewart; S. Vijayaraghavan; and W.R. Hoeh. 2007.  Reproductive Function for a C-terminus Extended, Male-Transmitted Cytochrome c Oxidase Subunit II Protein Expressed in Both Spermatozoa and Eggs.  FEBS Letters, 581(27):5213-5219.

Walker, J.M., A.E. Bogan, E.A. Bonfiglio, D.C. Campbell, A.D. Christian, J.P. Curole, J.L. Harris, R.J.
Wojtecki, and W.R. Hoeh. 2006. Primers for amplifying the hypervariable, male-transmitted COII-COI junction region in amblemine freshwater mussels (Bivalvia: Unionoidea: Ambleminae). Molecular Ecology Notes. 3 pgs., online publication November 2006.

Walker, J.M., J.P. Curole, D.E. Wade, E.G. Chapman, A.E. Bogan, G.T. Watters, and W.R. Hoeh.
2006.  Taxonomic distribution and phylogenetic utility of gender-associated mitochondrial genomes in the Unionoida (Bivalvia).  Malacologia, 48 (1-2):265-282.

Walker, J.M., A.E. Bogan, K. Garo, G.N. Soliman, and W R. Hoeh. 2006.  Hermaphroditism in the
Iridinidae (Bivalvia:Etherioidea).  Journal of Molluscan Studies, 72:216-217.

Chakrabarti, R., J.M. Walker, D.T. Stewart, R.J. Trdan, S. Vijayaraghavan, J.P. Curole, W.R. Hoeh.
2006. Presence of a unique male-specific extension of C-terminus to the cytochrome c oxidase
subunit II protein coded by the male-transmitted mitochondrial genome of Venustaconcha
ellipsiformis (Bivalvia: Unionoidea).  FEBS Letters, 580(3):862-866.

Hopkins, T.S.; J.J. Harrison; and J.M. Walker. 1998. Ocean Science Lab Manual. McGraw-Hill Co.
New York.  182 pp.