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Charles F. Duggins, Jr.

Lecturer, Dept. of Biological Sciences
Ph.D., 1980, Florida State University
803-777-4255
duggins@biol.sc.edu

Molecular Genetics of Killifish (Atheriniformes: Cyprinodontidae)

Although Dr. Duggins's primary role in the Department of Biological Sciences is undergraduate teaching, his research interests concern the biochemical genetics of atheriniform fishes. Past projects concerned the genera Menidia, Floridichthys, Lucania, and Fundulus utilizing isozyme electrophoresis.

Currently, Dr. Duggins is involved with the investigation of an ecological hybrid zone in the Fundulus majalis-F. similis species complex analyzing the mtDNA control region I. In the hybrid zone a northern mtDNA haplotype is gradually replaced by a southern haplotype as fishes are sampled on a N-S transect. Haplotype frequencies at different localities are used to determine evolutionary relationships and also investigate migratory habits over the course of a year.

A future project will be the investigation of the phylogenetic relationships of the killifish genera of Florida using other segments of the mtDNA chromosome.

Selected Publications:

Duggins, C.F., A. A. Karlin, T. A. Mousseau and K. G. Relyea. (1995) Analysis of a hybrid zone in Fundulus majalis in a northeastern Florida ecotone. Heredity 74(1995): 117-128.

Duggins, C. F., A. A. Karlin and K. G. Relyea.(1989) Biochemical systematics of southeastern USA populations of Fundulus heteroclitus and Fundulus grandis.. Northeast Gulf Science. 10(2): 95-102.

Duggins, C. F., A. A. Karlin, K. G. Relyea and R. W. Yerger. (1987) Systematics of the Key Silverside, Menidia conchorum, with comments on other Menidia species (Pisces: Atherinidae). Tulane Studies in Zoology and Botany 25(2): 133-150.

Duggins, C.F., A. A. Karlin, K. G. Relyea and R. W. Yerger. (1983) Systematics of the genus Floridichthys (Atheriniformes: Cyprinodontidae). Biochemical Systematics and Ecology 11(3): 283-294.

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