Schaefer Lab

Recent Publications

  • Matamoros, W. C. McMahon, P. Chakrabarty, A. James, and J. Schaefer. 2014. Derivation of the Freshwater Fish Fauna of Central America Revisited: Myers’s hypothesis in the 21st Century. Cladistics.
  • Feldheim, K.A., B.R. Kreiser, B. Schmidt, D.D. Duvernell and J.F. Schaefer. 2014. Isolation and characterization of microsatellite loci for the blackstripe topminnow (Fundulus notatus) and their variability in two closely related species. Journal of Fish Biology.
  • 2013
  • Earnest, K., J. Scott, J. Schaefer and D. Duvernell. 2013. The landscape genetics of syntopic topminnows (Fundulus notatus and F. olivaceus) in a riverine contact zone. Ecology of Freshwater Fish.
  • Franssen, N., Stewart, L. and J. Schaefer. 2013. Morphological divergence and flow-induced phenotypic plasticity in fish from anthropogenically altered stream habitats. Ecology and Evolution.
  • Duvernell, D.D., Meier, S., Schaefer, J.F., and B.R. Kreiser. 2013. Contrasting phylogeographic histories between broadly sympatric topminnows in the Fundulus notatus species complex. Molecular Phylogenetics and Evolution
  • Duvernell, D. & Schaefer, J. F. 2013. Variation in contact zone dynamics between two species of topminnows, Fundulus notatus and F. olivaceus, across isolated drainage systems, Evolutionary Ecology
  • Mickle, P.F., J. Schaefer, D.A. Yee and S.B Adams. 2013. Diet of juvenile Alabama shad (Alosa alabamae) in two northern Gulf of Mexico drainages. The Southeastern Naturalist 12: 233-237
  • 2012
  • Franssen, N.R., J. Harris, S. Clark, J. Schaefer, and L. Stewart. 2012. Shared and unique morphological responses of stream fishes to anthropogenic habitat alteration. In press, Proceedings of the Royal Society B.
  • Matamoros, W.A., J. Schaefer, C. L. Hernandez and P. Chakrabarty. 2012. Profundulus kreiseri, a new species of Profundulidae (Teleostei, Cyprinodontiformes) from northwestern Honduras. ZooKeys 227: 49-62
  • Schaefer, J.F. D. Duvernell, B. Kreiser, C. Champagne, S.R. Clark, M. Gutierrez, L. Stewart, C. Coleman. 2012. Evolution of a sexually dimorphic trait in a broadly distributed topminnow (Fundulus olivaceus). Ecology and Evolution 2(7): 1371-1381.
  • Schaefer, J., S. Clark and M.L. Warren. 2012. Diversity and stability in Mississippi stream fish assemblages. Freshwater Science 31: 882-894.
  • Schaefer, J.F. 2012. Hatch success and temperature dependent development time in two broadly distributed topminnows (Fundulidae). Naturwissenschaften 99(7): 591-595.

  • For a complete list, see my CV

Ecology, Evolution and Physiology of Fishes


One of the greatest challenges in biology is to explain observed levels and patterns of species diversity. My research focuses on pieces of this puzzle on a variety of organizational levels from the physiology of individuals to the large scale temporal and spatial dynamics of assemblages. My lab typically uses freshwater fishes as model organisms to address these questions. Much of my recent work has focused on fishes in the Fundulus notatus species complex. The three described species in this group are ecologically and morphologically very similar and abundant throughout the Mississippi basin and Gulf of Mexico drainages from the Florida panhandle to southeastern Texas. The two most widely distributed members of this complex, F. notatus and F. olivaceus, cooccur and hybridize in replicate contact zones throughout much of that area. These contact zones are ideal systems for addressing a number of pertinent questions in the evolutionary ecology of fish.


USM Ichthyological Collection

The USM Museum of Ichthyology is an invaluable resource for students and researchers interested in ichthyology. The museum currently contains more than 46,000 lots and 1,100,000 specimens representing over 870 taxa.


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