Biological, Geological, and Environmental Sciences

Dr. Paul Doerder

Ph.D., University of Illinois at Urbana-Champaign
Office Phone: (216) 687-2442
COS Faculty Profile

Research Interests:


The two parts of this web site are devoted to the study of natural populations of the ciliate T. thermophila. The first part summarizes studies on its life cycle and natural history. The second part is devoted to the analysis of genetic polymorphisms and the inferences that may be drawn regarding population biology and gene evolution.

Life cycle and natural history

Genetic polymorphism



Arslanyolu, M., and F. P. Doerder, 2000 Genetic and environmental factors affecting mating type frequency in natural isolates of Tetrahymena thermophila. Journal of Eukaryotic Microbiology 47: 412-418.

Bleyman, L. K., M. P. Baum, P. J. Bruns and E. Orias, 1992 Mapping the mating type locus of Tetrahymena thermophila -meiotic linkage of mat to the ribosomal-RNA gene. Developmental Genetics 13: 34-40.

Brickner, J. H., T. J. Lynch, D. Seilinger and E. Orias, 1996 Identification, mapping and linkage analysis of randomly amplified DNA polymorphisms in Tetrahymena thermophila. Genetics 143: 811-822.

Corliss, J. O., 1952 Systematic status of the pure culture ciliate known as "Tetrahymena geleii" and "Glaucoma piriformis". Science 116: 118-119.

Corliss, J. O., 1973 History, taxonomy, ecology, and evolution of species of Tetrahymena, pp. 1-55 in Biology of Tetrahymena, edited by A. M. Elliott. Dowden, Hutchinson & Ross, Inc., Stroudsburg.

Doerder, F. P., M. Arslanyolu, Y. Saad, M. Kaczmarek, M. Mendoza et al., 1996 Ecological genetics of Tetrahymena thermophila: mating types, i-antigens, multiple alleles and epistasis. Journal of Eukaryotic Microbiology 43: 95-100.

Doerder, F. P., M. A. Gates, F. P. Eberhardt and M. Arslanyolu, 1995 High frequency of sex and equal frequencies of mating types in natural populations of Tetrahymena thermophila. Proceedings of the National Academy of Sciences of the United States of America 92: 8715-8718.

Elliott, A. M., 1970 The distribution of Tetrahymena pyriformis. Journal of Protozoology 17: 162-168.

Furgason, W. H., 1940 The significant cytostomal pattern of the Glaucoma-Colpidium group, and a proposed new genus and species, Tetrahymena geleii. Archiv fur Protistenkunde 94: 224-266.

Leick, V., and P. Hellung-Larsen, 1992 Chemosensory behaviour of Tetrahymena. BioEssays 14: 61-66.

Lwoff, A., 1923 Sur la nutrition des infusoires. C. R. Acad. Sci. Paris 176: 928-930.

Lynch, T. J., J. Brickner, K. J. Nakano and E. Orias, 1995 Genetic map of randomly amplified DNA polymorphisms closely linked to the mating type locus of Tetrahymena thermophila. Genetics 141: 1315-1325.

Maupas, E., 1889 La rejeunissement karyogamique chez les cili‚s. Arch. Zool. Exptl. G‚n. 7: 149-517.

Nanney, D. L., 1960 Temperature effects on nuclear differentiation in variety 1 of Tetrahymena pyriformis. Physiological Zoology 33: 146-151.

Nanney, D. L., E. B. Meyer and S. S. Chen, 1977 Perturbance analysis of nuclear determination in Tetrahymena. I. Background, rationale, and illustrative example, employing temperature responses. Differentiation 9: 119-130.

Nanney, D. L., and E. M. Simon, 2000 Laboratory and evolutionary history of Tetrahymena thermophila. Methods Cell Biol 62: 3-25.

Orias, E., 1981 Probable somatic DNA rearrangements in mating type determination in Tetrahymena thermophila: A review and a model. Developmental Genetics 2: 185-202.

Phillips, R. B., 1968 Mating-type alleles in Illinois strains of Tetrahymena pyriformis, syngen 1. Genetical Research (Cambridge) 11: 211-214.

Weindruch, R. H., and F. P. Doerder, 1975 Age-dependent micronuclear deterioration in Tetrahymena pyriformis, syngen 1. Mechanisms of Ageing and Development 4: 263-279.

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Department of Biological, Geological, and Environmental Sciences
College of Science, Cleveland State University
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Update: 3 January, 2005