M.A., East Carolina Univ. 1972
Ph.D., Wake Forest Univ. 1975
Univ. of Notre Dame 1975-77
Office: Lapham S297
Research InterestsMy research interests are in the broad area of animal parasitology. Parasitism represents a mode of life which frequently involves multispecies assemblages and multiple stages of the same species within the life history, making them appropriate for ecological studies. Additionally, the complexity of parasite life cycles leads to interesting questions in developmental and structural biology. Prior research in my laboratory has ranged from ultrastructural studies of protozoan, helminth and arthropod parasites to questions concerning helminth and arthropod population and community ecology.
Research projects currently under way in my laboratory focus on the patterns and processes of helminth parasite communities in aquatic ecosystems. We are interested in the regulatory factors influencing these assemblages and how they respond to both biotic and abiotic ecological factors. One current project is examining the helminth parasite infracommunity within a molluscan host species. This project will soon be expanded to include the suprapopulations of parasites from amphibian definitive hosts within this ecosystem.
Another area of research in my laboratory has dealt with a group of intestinal protozoan parasites. We have studied the excystation process in the flagellate Giardia and apicomplexan Cryptosporidium. Using in vitro excystation models, we have studied subcellular developmental alterations as the parasite changes from an infective cyst to a pathogenic trophozoite stage.
Although not a major focus, another line of research has dealt with a group of economically important arthropod ectoparasites including Varroa jacobsoni, the honeybee mite, and Ixodes dammini, the primary vector of Lyme disease. Our studies in this area have dealt with both epidemiological surveys and ultrastructural development.
Kapfer, J.M., J.R. Coggins and R. Hay. 2008. Estimates of population size, measurements of sex ratios, and reported mortality rates for Bullsnakes (Pituophis catenifer sayi) at a site in the upper Midwestern United States. Journal of Herpetology 42: 265-269.
Kapfer, J.M., M.J. Pauers, D.M. Reineke, J. Coggins and R. Hay. 2008. Environmental, behavioral, and habitat variables influencing body temperature in radio-tagged bullsnakes, Pituophis catenifer sayi. Journal of Thermal Biology 11: 1020-1026.
Bolek, M. G. and J. R. Coggins. 2002. Seasonal occurrence, morphology, and observations on the life history of Gordius difficilis (Nematomorpha:Gordioidea) from southeastern Wisconsin, United States. Journal of Parasitology 88: 287-295.
Bolek, M. G. and J.R. Coggins. 2002. Observations on myiasis by the calliphorid, Bufolucilia silvarum, in the Eastern American Toad (Bufo americanus americanus) from Southeastern Wisconsin. Journal of Wildlife Diseases 38: 598-603.
Bolek, M. G. and J. R. Coggins. 2001. Seasonal occurrence and community structure of helminth parasites in Green Frogs, Rana clamitans melanota, from Southeastern Wisconsin, USA. Comparative Parasitology 68 (2): 164-173.
Yoder, H. R., J. R. Coggins, and J. C. Reinbold. 2001. Helminth parasites of the Green Frog (Rana clamitans) from Southeastern Wisconsin, U.S.A. Comparative Parasitology 68:269-272.
Bolek, M.G. and J.R. Coggins. 2000. Seasonal occurrence and community structure of helminth parasites from the eastern American toad, Bufo a. americanus, from southeastern Wisconsin, USA. Comparative Parasitology 67(2): 202-209.
Bolek, M.G. and J.R. Coggins. 1998. Endoparasites of Cope's Gray Treefrog, Hyla chrysoscelis, and Western Chorus Frog, Pseudacris t. triseriata, from southeastern Wisconsin. Journal of the Helminthological Society of Washington 65: 212-219.
Coggins, J.R. 1998. Effect of season, sex, and age on prevalence of parasitism in dogs from southeastern Wisconsin. Journal of the Helminthological Society of Washington. 65:219-224.
Yoder, H.R. and J.R. Coggins. 1998. Larval trematode assemblages in the snail Lymnaea stagnalis from southeaster Wisconsin. Journal of Parasitology 84:259-268.
Bolek, M.G.. and J.R. Coggins. 1996. Helminth parasites of the spotted salamander Ambystoma maculatum and the red-backed salamander Plethodon c. cinereus from northwestern Wisconsin. Journal of the Helminthological Society of Washington. 65:98-102, 1998.
Yoder, HR and Coggins JR. 1996. Helminth Communities in the Northern Spring Peeper, Pseudacris c. crucifer Wild and the Wood Frog, Rana sylvatica Le Conte, from Southeastern Wisconsin. J. Helminthol. Soc. Wash. 63:211-214.
Bautz RA and Coggins JR. 1992. Scanning electron microscopy of female Varroa jacobsoni (Arthropoda: Acarina), ectoparasite of the Honeybee Apis mellifera. Trans. Americ. Micros. Soc. 111:28-35.
Callister SM, Nelson JA, Schell RF, Jobe DA, Bautz RA, Agger WA, and Coggins JR. 1991. Survey for Ixodes spp. and Borrelia burgdorferi in Southeastern Wisconsin and Northeastern Illinois. J. of Clin. Microb. 29:403-406.
Coggins JR. 1988. Methods for the ecological study of bat endoparasites. pp. 475-490 In "Methods for the Ecological and Behavioral Study of Bats." Kunz, T., ed. Smithsonian Institute Press.
Coggins JR, Schaefer FW. 1986. Giardia muris: Transmission electron microscopy of in vitro excystation. Exp. Parasitol. 61:219-228.
Coggins JR, Schaefer FW, and Weinstein PP. 1985. Ultrastructural analysis of pathologic lesions in sterol- deficient larvae of Nippostrongylus brasiliensis. J. of Invert. Path. 45:288-297.
Coggins JR, and Schaefer FW. 1985. Giardia muris: Scanning electron microscopy of in vitro excystation. Exp. Parasitol. 57:62-67.