skip to main content columnskip to left navigationskip to horizontal navigation

Biological Sciences

College of Arts & Sciences

Profile Image

Karl H. Joplin 

Professor Emeritus
423-439-6921 /
Brown Hall, Room 432

Research Interest:

The broad scope of my research is to study the changes to cellular and physiological functions during the alternative life stage of diapause. Diapause is an aspect of their life cycle that insects use to survive winter conditions. As such it has similarities to other interrupted life stages as the dauer larval stage of Caenorhabditis elgegans, hibernatin of vertebrates, sporulation of bacteria and yeast, send dormacy of plants and perhaps even the Go stage of the cell cycle. The flesh fly, Sarcophaga crassipalpis, is an attractive organism for this study because the developmental decision to enter into either diapause or to continue development is the environmental cue of the night length received during a daylength. My research is opening new approaches to this area by identifying specific genes being expressed during diapause. Dr. Joplin's Laboratory Webpage

Selected Publications:

Joplin KH, X Lu, V Fregoso, A Lundy, M Phillips, E Seier, R Wang and DJ Moore.(2014)  Nocturnal activity of a diurnal fly: effects of sex, age and nutrition on Light:Dark enertainment activity patterns in the flesh fly, Sarcophaga crassipalpis. (In preparation)

Moore D, C Paquette, E Seier, and KH Joplin. (2014) Extensive reorganization of behavior accompanies ontogeny of aggression in male flesh flies. PLoS ONE (April)

Karl H Joplin, Istvan Karsai, Darrell Moore, Hugh A. Miller III, Edith Seier, Anant Godbole, and Michel Helfgott. (2013) SYMBIOSIS: An Integration of Biology, Math and Statistics at the Freshman Level: Walking Together Instead of on Opposite Sides of the Street in Undergraduate Mathematics for the Life Sciences: Models, Processes, and Directions, MAA Notes, Vol. 81, mathematical Association of America, Washington DC, 2013 pp. 97-103

Firoz A, A Malik, KH Joplin, Z Ahmad, V Jha, S Ahmad. (2011) Residue propensities, discrimination and binding site prediction of adenine and guanine phosphates. BMC Biochemistry 12:20-43. Doi: 10.1186/1471-2091-12-20

Paquette C, KH Joplin, E Seier, J Peyton, D Moore. (2008) Gender-specific differences in spatial behaviour in the flesh fly, Sarcophaga crassipalpis. Physiological Entomology 33: 382-388.


  • General Entomology (BIOL3480)
  • Recombinant DNA Lab (BIOL4597/5597)
  • Molecular Biology (BIOL4647)
  • Governor's School for Scientific Models and Data Analysis
icon for left menu icon for right menu