Stephen James Jacquemin, Ph.D.

Lake Campus Science & Mathematics
Assistant Professor, Biology and Research Coordinator
Dwyer Hall 230J, 7600 Lake Campus Dr, Celina, OH 45822-2921
937-775-8384, 419-586-0384
Education History: 

Ball State University, Ph.D. (Environmental Sciences), 2013  Dissertation: Spatial, Temporal, and Ecological Correlates of Morphological Variation among North American Freshwater Fishes  

Ball State University, M.S. (Biology), 2010  Thesis: Impacts of Glaciation on Contemporary Fish Assemblages

Ohio Northern University, B.Sc. (Biology, Environmental Science), 2008

Universidad de La Habana, Cuba (Environmental Management), 2006

Research: Population ecology of sharks and rays along the southern coastal shelf of Cuba


My teaching philosophy is founded on a passion for the sciences that has developed over a lifetime of interest in biology, research, and education. I believe that effective educators should both provide specific topical information as well as cultivate a desire to internalize overarching core biological concepts. I believe that a combination of traditional class lecture with experiential learning can unify theoretical concepts with practical application to promote a balance in student learning. I consider involvement in faculty research programs, internships, professional societies, and classroom working groups to be an integral part of enhancing subject understanding and professional development.

Some of the courses that I teach include Biology of Food, Health and Disease, Cells and Genes, Organisms and Ecosystems, Invertebrate Zoology, Ichthyology, and Independent Studies.


Research statement: 

My research interests focus on the ecology and evolution of freshwater fishes and gastropods. I am particularly interested in understanding patterns of abundance (both spatial and temporal), morphology, and ecological niche. The primary mission of my lab is to promote the conservation of aquatic resources through increased understanding of the taxa contained therein.

Much of my research revolves around the long term analysis of Ohio River Basin fish and gastropod assemblages. These assemblage studies have detailed population and community changes at both the taxonomic and functional level over the past century - primarily as a result of habitat alterations. Other projects branching from this theme include life history studies of large river fish diets and growth determinants.

In addition to exploring spatial and temporal patterns in aquatic assemblages, my research also includes ecomorphological studies which describe body shape patterns in fish and gastropods. The mechanism of this variation appears to be a combination of ontogenic and environmental factors ranging from developmental constraints to phenotypic plasticity. Ongoing project interests in ecomorphology include the description of the major sources of intraspecific shape variation, the evolutionary diversification of North American freshwater fishes, and the role that morphology plays in community structure.  

Some of the field and analytical methods utilized in my research include various sampling techniques (e.g. electrofishing, seine netting), geographic information systems, stable isotope analysis, multi-metric biological and habitat measurement procedures, geometric morphometrics, multivariate statistics, phylogenetic comparative methods, and ecological niche models.

Students interested in research involvement should contact directly regarding lab openings and potential projects.



24. Dillon RT, Jacquemin SJ. 2015. The heritability of shell morphometrics in the freshwater pulmonate gastropod, Physa. PLOS ONE 10(4): e0121962. doi:10.1371/journal.pone.0121962.

23. Cavanaugh J, Jacquemin SJ. 2015. A large sample comparison of grade based student learning outcomes in online vs. face-to-face courses. Online Learning 19(2): 1-8.

22. Jacquemin SJ, Doll JC, Pyron M, Allen M, Owen DAS*. 2015. Effects of flow regime on growth rate in freshwater drum, Aplodinotus grunniens. Environmental Biology of Fishes 98(4): 993-1003.

21. Ross B*, Jacquemin SJ, Pyron M. 2014. Does variation in morphology correspond with variation in habitat use in freshwater gastropods? Hydrobiologia 736(1):179-188.

20. Jacquemin SJ, Doll JC. 2014. Body size and geographic range do not explain long term variation in fish populations: A Bayesian phylogenetic approach to testing assembly processes in stream fish assemblages. PLOS ONE 9(4): e93522. doi:10.1371/journal.pone.0093522.

19. Jacquemin SJ, Bernot MJ, Smelser L. 2014. Twitter (social media) in the higher education classroom: a student and faculty assessment of use and perception. Journal of College Science Teaching 43(6): 22-27.

18. Jacquemin SJ, Pyron M, Allen M, Etchison L. 2014. Freshwater drum (Aplodinotus grunniens Rafinesque) diet in the Wabash River: effects of body size, river location, and sex. Journal of Fish and Wildlife Management 5(1): 133-140.

17. Krall D, Lim S, Cooper A, Burleson P, Rhoades D, Jacquemin SJ, Willmore D, Spears M, Willmore C. 2014 (Published Electronically 2013). Withdrawal effect of chronic amphetamine exposure during adolescence on complex maze performance. Addiction Biology 19(4): 634-642.

16. Jacquemin SJ, Miller C*, Pyron M. 2013. Identifying local scale food web variation using stable δ13C and δ15N isotopes in a central Indiana reservoir and downstream river. Proceedings of the Indiana Academy of Science 122(2): 62-68.

15. Gaston K, Jacquemin SJ, Lauer T. 2013. The influence of preservation on fish morphology in museum collections. Acta Ichthyologica et Piscatoria 43(3): 219-227.

14. Jacquemin SJ, Pyron M. 2013. Effects of allometry, sex, and river location on morphological variation of freshwater drum Aplodinotus grunniens in the Wabash River, USA. Copeia (4): 740-749.

13. Perry WL, Jacks AM, Fiorenza D, Young M, Kuhnke R, Jacquemin SJ. 2013. Effects of water velocity on the size and shape of rusty crayfish, Orconectes rusticus. Invited submission – Special Issue – Crayfish Biology, Ecology, and Conservation, Freshwater Science (JNABS) 32(4): 1398-1409.

12. Owen DAS*, Settinera A*, Jacquemin SJ, Pyron M. 2013. On the contribution of allometry to morphological variation in a freshwater gastropod Elimia livescens. Proceedings of the Indiana Academy of Science 121(2): 163-166.

11. Pyron M, T Pitcher, Jacquemin SJ. 2013. Evolution of mating systems and sexual size dimorphism in North American Cyprinids. Behavioral Ecology and Sociobiology 67(5): 747-756.

10. Dillon R, Jacquemin SJ, Pyron M. 2013. Cryptic phenotypic plasticity in populations of the freshwater prosobranch snail, Pleurocera canaliculata. Hydrobiologia 709(1): 117-127.

9. Jacquemin SJ, Doll JC. 2013. Long-term fish assemblages respond to habitat and niche breadth in the West Fork White River, Indiana. Ecology of Freshwater Fish 22(2): 280-294. 

8. Jacquemin SJ, Martin E*, Pyron M. 2013. Morphology of bluntnose minnow Pimephales notatus (Cyprinidae) covaries with habitat in a central Indiana watershed. American Midland Naturalist 169(1): 137-146.

7. Dunithan A*, Jacquemin SJ, Pyron M. 2012. Morphology of Elimia livescens (Mollusca) in Indiana, USA covaries with environmental variation. American Malacological Bulletin 30(1): 127-133.

6. Etchison L*, Jacquemin SJ, Allen M, Pyron M. 2012. Morphological variation of rusty crayfish Orconectes rusticus (Cambaridae) with gender and local scale spatial gradients. International Journal of Biology 4(1): 163-171.

5. Pyron M, Williams L, Beugly J, Jacquemin SJ. 2011. The role of trait-based approaches in understanding stream fish assemblages. Freshwater Biology 56(8): 1579-1592.

4. Jacquemin SJ, Pyron M. 2011. Fishes of Indiana streams: current and historic assemblage structure. Hydrobiologia 665(1): 39-50.

3. Jacquemin SJ, Pyron M. 2011. Impacts of past glaciation events on contemporary fish assemblages of the Ohio River basin. Journal of Biogeography 38(5): 982-991. 

2. Pyron M, Beugly J, Pritchett J, Jacquemin SJ, Lauer T, Gammon J. 2011. Long term fish assemblages of inner bends in a large river. River Research and Applications 27(6): 684-692.

1. Pyron M, Beugly J, Spielman M, Pritchett J, Jacquemin SJ. 2009. Habitat variation among aquatic gastropod assemblages of Indiana, U.S.A. Open Zoology Journal 2(1): 8-15.

Professional Affiliations/Memberships: 

American Society of Ichthyologists and Herpetologists

American Fisheries Society

PULSE – Society for Undergraduate Life Science Education

American Society of Literature and the Environment (ASLE)

Tri Beta Biological Honor Society


2014       Outstanding Faculty of the Year – Wright State University Lake Campus (Awarded 2015)

2014       Excellence in Teaching (Wright State Core Education) – Student Nominated (BIO 1070 Health and Disease)

2014       Excellence in Teaching (Wright State Core Education) – Student Nominated (BIO 1050 Biology of Food)

2012       American Fisheries Society – Indiana Chapter, Best Student Poster Award

2010       Ball State University – Fisheries Graduate Student of the Year

2010       American Fisheries Society – North Central Division, Joan Duffy Award

2010       American Fisheries Society – Indiana Chapter, Best Student Paper Award

2010       American Fisheries Society – Indiana Chapter, Best Student Poster Award

2009       American Fisheries Society – North Central Division, Joan Duffy Award

2009       American Fisheries Society – Indiana Chapter, Best Student Paper Award

2006       US Fish and Wildlife 500 Hour Volunteer Award

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