John Janovy, Jr.
Varner Professor of Biological Sciences
University of Nebraska-Lincoln

The Janovy lab is currently focusing on problems of parasite population and community structure, host specificity, life cycle evolution, and taxonomy. We work primarily with small fish and invertebrate hosts; the parasites have been mainly apicomplexans, particularly septate gregarines, but we're getting back into studies of the parasite communities of small fish. The research group typically includes undergraduates as well as graduates; most years there are 2-3 graduate students and 2-4 undergraduates doing research in my lab. Our field sites are in western Nebraska, near the Cedar Point Biological Station north of Ogallala, NE, in the Salt Valley watershed north and west of Lincoln, and in Cass County east of Lincoln.

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2014

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Why American Higher Education Needs Parasitologists, John J. Janovy Jr.

2009

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Alternative Life Cycle Strategies and Colonization of Young Anurans by Gorgoderina attenuata in Nebraska, Matthew G. Bolek, Scott D. Snyder, and John J. Janovy Jr.

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Redescription of the Frog Bladder Fluke Gorgoderina attenuata from the Northern Leopard Frog, Rana pipiens, Matthew G. Bolek, Scott D. Snyder, and John J. Janovy Jr.

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Why We Have Field Stations: Reflections on the Cultivation of Biologists, John J. Janovy Jr. and Krista M. Major

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Community Structure and Seasonal Dynamics of Dactylogyrus spp. (Monogenea) on the Fathead Minnow (Pimephales promelas) from the Salt Valley Watershed, Lancaster County, Nebraska, Alaine Knipes and John J. Janovy Jr.

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Comparative Life Cycles and Life Histories of North American Rhabdias spp. (Nematoda: Rhabdiasidae): Lungworms from Snakes and Anurans, Gabriel J. Langford and John J. Janovy Jr.

2008

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The Role of Phylogeny and Ecology in Experimental Host Specificity: Inisights from a Eugregarine-Host System, Jillian Tikka Detwiler and John J. Janovy Jr.

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Gregarines on a Diet: The Effects of Host Starvation on Gregarina confusa Janovy et al., 2007 (Apicomplexa: Eugregarinida) in Tribolium destructor Uyttenboogaart, 1933 (Coleoptera: Tenebrionidae) Larvae, Jodi Schreurs and John J. Janovy Jr.

2007

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Evolutionary Avenues for, and Constraints on, the Transmission of Frog Lung Flukes (Haematoloechus spp.) in Dragonfly Second Intermediate Hosts, Matthew G. Bolek and John J. Janovy Jr.

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Small Frogs Get Their Worms First: The Role of Nonodonate Arthropods in the Recruitment of Haematoloechus coloradensis and Haematoloechus complexus in Newly Metamorphosed Northern Leopard Frogs, Rana pipiens, and Woodhouse's Toads, Bufo woodhousii, Matthew G. Bolek and John J. Janovy Jr.

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Gregarina niphandrodes (Eugregarinorida: Septatorina): Oocyst Surface Architecture, John J. Janovy Jr., Matthew G. Bolek, Jillian Tikka Detwiler, Samana Schwank, Alaine Knipes, and Gabriel J. Langford

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New and Emended Descriptions of Gregarines from Flour Beetles (Tribolium spp. and Palorus subdepressus: Coleoptera, Tenebrionidae), John J. Janovy Jr., Jillian Tikka Detwiler, Samana Schwank, Matthew G. Bolek, Alaine Knipes, and Gabriel J. Langford

2006

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A New Species of Myxidium (Myxosporea: Myxidiidae), from the Western Chorus Frog, Pseudacris triseriata triseriata, and Blanchard's Cricket Frog, Acris crepitans blanchardi (Hylidae), from Eastern Nebraska: Morphology, Phylogeny, and Critical Comments on Amphibian Myxidium Taxonomy, Miloslav Jirků, Matthew G. Bolek, Christopher M. Whipps, John J. Janovy Jr., Mike L. Kent, and David Modrý

2004

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Observations on Myiasis by the Calliphorids, Bufolucilia silvarum and Bufolucilia elongata, in Wood Frogs, Rana sylvatica, From Southeastern Wisconsin, Matthew G. Bolek and John J. Janovy Jr.

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Life Cycle and Paratenesis of American Gordiids (Nematomorpha: Gordiida), Ben Hanelt and John J. Janovy Jr.

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Review of Parasites and Diseases of Wild Birds in Florida by D. J. Forrester and M. G. Spalding; University Press of Florida, 2003, John J. Janovy Jr.

2003

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Observations on the Life History and Descriptions of Coccidia (Apicomplexa) from the Western Chorus Frog, Pseudacris triseriata triseriata, from Eastern Nebraska, Matthew G. Bolek, John J. Janovy Jr., and Armando R. Irizarry-Rovira

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Host Specificity among Ancyrocephalinae (Monogenoidea) of Nebraska Sunfish, Megan R. Collins and John J. Janovy Jr.

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Phyllodistomum funduli n. sp. (Trematoda: Gorgoderidae) from Fundulus sciadicus Cope from Cedar Creek in Western Nebraska, Jaclyn Helt, John J. Janvoy Jr., and John Ubelaker

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Acceptance of the Clark P. Read Mentor Award: The Teague Self Lessons, John J. Janovy Jr.

2002

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Morphometric Analysis of Nonadult Characters of Common Species of American Gordiids (Nematomorpha: Gordioidea), Ben Hanelt and John J. Janovy Jr.

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Concurrent Infections and the Community Ecology of Helminth Parasites, John J. Janovy Jr.

2001

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Physid Snails as Sentinels of Freshwater Nematomorphs, Ben Hanelt, L. E. Grother, and John J. Janovy Jr.

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Epimerite-Host Epithelium Relationships among Eugregarines Parasitizing the Damselflies Enallagma civile and Ischnura verticalis, Tamara J. Percival Cook, John J. Janovy Jr., and Richard E. Clopton

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The Response of Gregarina niphandrodes (Apicomplexa: Eugregarinida: Septatina) to Host Starvation in Tenebrio molitor (Coleoptera: Tenebrionidae) Adults, Jennifer E. Schawang and John J. Janovy Jr.

2000

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Parasite Community Structure in Pimephales promelas (Pisces: Cyprinidae) from Two Converging Streams, M. A. Weichman and John A. Janovy Jr.

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Host Specificity in Metamera sillasenorum, n. sp., a Gregarine Parasite of the Leech Helobdella triserialis with Notes on Transmission Dynamics, Megan R. Wise de Valdez, John J. Janovy Jr., and John C. Wise

1999

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The Life Cycle of a Horsehair Worm, Gordius robustus (Nematomorpha: Gordioidea), Ben Hanelt and John J. Janovy Jr.

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Review of The Avian Brood Parasites: Deception at the Nest by Paul A. Johnsgard; Oxford University Press, 1997, John J. Janovy Jr.

1997

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Evolutionary Constraints on Population Structure: The Parasites of Fundulus zebrinus (Pisces: Cyprinodontidae) in the South Platte River of Nebraska, John J. Janovy Jr., Scott D. Snyder, and Richard E. Clopton

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Gregarina triboliorum (Eugregarinida: Gregarinidae) n. sp. from Tribolium confusum and Resolution of the Confused Taxonomic History of Gregarina minuta Ishii, 1914, Stephanie Watwood, John J. Janovy Jr., Erica Peterson, and Mary Ann Addison

1996

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In Memoriam: John Teague Self (1906-1995), John J. Janovy Jr.

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Behavioral Basis of Second Intermediate Host Specificity among Four Species of Haematoloechus (Digenea: Haematoloechidae), Scott D. Snyder and John J. Janovy Jr.

1994

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Host Specificity of Rhabdochona canadensis (Nematoda: Rhabdochonidae) in Nebraska, Michael A. Barger and John J. Janovy Jr.

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Second Intermediate Host-Specificity of Haematoloechus complexus and Haematoloechus medioplexus (Digenea: Haematoloechidae), Scott D. Snyder and John J. Janovy Jr.

1993

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The Niche of the Gill Parasite Dactylogyrus banghami (Monogenea: Dactylogyridae) on Notropis stramineus (Pisces: Cyprinidae), Jill A. Anderson, Kimberly J. Blazek, Tamara J. Percival Cook, and John J. Janovy Jr.

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Developmental Niche Structure in the Gregarine Assemblage Parasitizing Tenebrio molitor, Richard E. Clopton and John J. Janovy Jr.

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Nubenocephalus nebraskensis n. gen., n. sp. (Apicomplexa: Actinocephalidae) from Adults of Argia bipunctulata (Odonata: Zygoptera), Richard E. Clopton, Tamara J. Percival Cook, and John J. Janovy Jr.

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Patterns of Morphological Variation of Salsuginus yutanensis (Monogenea: Ancyrocephalidae) over Space and Time, Michael T. Ferdig, Mary Ann McDowell, John J. Janovy Jr., and Richard E. Clopton

1992

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Host Stadium Specificity in the Gregarine Assemblage Parasitizing Tenebrio molitor, Richard E. Clopton, John J. Janovy Jr., and Tamara J. Percival Cook

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Review of Phylogeny, Ecology, and Behavior by Daniel R. Brooks and Deborah A. McLennan, University of Chicago Press, 1991, John J. Janovy Jr.

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The Roles of Ecological and Evolutionary Influences in Providing Structure to Parasite Species Assemblages, John J. Janovy Jr., Richard E. Clopton, and Tamara J. Percival Cook

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Dynamics of the Parasite Assemblage of Pimephales promelas in Nebraska, Mary Ann McDowell, Michael T. Ferdig, and John J. Janovy Jr.

1991

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Salsuginus yutanensis n. sp. (Monogenea: Ancyrocephalidae) from Fundulus sciadicus in Clear Creek of Eastern Nebraska, Michael T. Ferdig, Mary Ann McDowell, and John J. Janovy Jr.

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The Niche of Salsuginus thalkeni, a Gill Parasite of Fundulus zebrinus, John J. Janovy Jr., Mary Ann McDowell, and Michael T. Ferdig

1990

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Life History Differences Between Two Species of Gregarina in Tenebrio molitor Larva, Tim R. Ruhnke and John J. Janovy Jr.

1989

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Salsuginus thalkeni n. sp. (Monogenea: Ancyrocephalidae) from Fundulus zebrinus in the South Platte River of Nebraska, John J. Janovy Jr., Tim R. Ruhnke, and Terry A. Wheeler

1988

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Population Dynamics of Distoichometra bufonis (Cestoda: Nematotaeniidae) in Bufo woodhousii, John J. Janovy Jr. and Eugene Lee Hardin

1987

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Population Dynamics of the Parasites in Fundulus zebrinus in the Platte River of Nebraska, John J. Janovy Jr. and Eugene Lee Hardin

1981

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Inhibition of In vitro Macrophage Digestion Capacity by Infection with Leishmania donovani (Protozoa: Kinetoplastida), Gerald F. Kutish and John J. Janovy Jr.

1980

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Morphology of Leishmania donovani Colonies Grown on Blood Agar Plates, Amy Doran Keppel and John J. Janovy Jr.

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Myxosoma funduli Kudo 1918 (Protozoa: Myxosporida) in Fundulus kansae (Pisces: Cyprinodontidae): Annual Prevalence and Geographic Distribution, Stephen A. Knight, John J. Janovy Jr., and William L. Current

1978

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Adult Cestodes from the Coelomic Cavity of the Teid Lizard, Cnemidophorus sexlineatus, Wesley L. Shoop and John J. Janovy Jr.

1977

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Herpetomonas megaseliae and Crithidia harmosa: Growth on Blood-Agar Plates, Amy Doran Kepel and John J. Janovy Jr.

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Myxosoma funduli Kudo 1918 (Protozoa: Myxosporida) in Fundulus kansae: Summer Epizootiology, Stephen A. Knight, John J. Janovy Jr., and William L. Current

1976

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Ultrastructure of Interlamellar Henneguya exilis in the Channel Catfish, William L. Current and John J. Janovy Jr.

1974

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Herpetomonas megaseliae: Architectural Rearrangements during Amastigote Formation, John J. Janovy Jr., P. M. Daggett, and K. W. Lee

1973

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The Other Side of Biology, John J. Janovy Jr.

1972

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Herpetomonas megaseliae sp. n. (Protozoa: Trypanosomatidae) from Megaselia scalaris (Loew, 1866) Schmitz, 1929 (Diptera: Phoridae), Pierre M. Daggett, John J. Janovy Jr., and Norman R. Dollahon

1971

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Insect Flagellates from Feces and Gut Contents of Four Genera of Lizards, Norman R. Dollahon and John J. Janovy Jr.

1966

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Epidemiology of Plasmodium hexamerium Huff, 1935, in Meadowlarks and Starlings of the Cheyenne Bottoms, Barton County, Kansas, John J. Janovy Jr.

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Mosquitoes of the Cheyenne Bottoms Waterfowl Management Area, Barton County, Kansas, John J. Janovy Jr.

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Review of Protozoology, 5th ed., by Richard R. Kudo (Thomas, Springfield, 1966), John J. Janovy Jr.

1965

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Review of Modern Biological Principles by A.M. Winchester; Van Nostrand, 1965, John J. Janovy Jr.

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Kowalewskiella totani n. sp. (Cestoda: Dilepididae) from Totanus flavipes, J. Teague Self and John J. Janovy Jr.