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Jill Jenkins


Contact Info

Short Biography


                     1991-1992:         Postdoctoral Res.;  Reproductive Genetics Labs, Dept. of Obstetrics and Gynecology, Univ. of TN, with Stephen Wachtel

                     1985 - 1991:       Degree:  Ph.D. in Microbiology

                                                Memphis State Univ., Memphis, TN

                     1983 - 1985:       Degree:  M.S. in Microbiology and Biochemistry

                                                Idaho State Univ., Pocatello, ID

                     1979 - 1981:       Degree:  B.S. in Biology

                                                Rochester Institute of Technology, Rochester, NY

                     1977 - 1979:       Eisenhower College, Seneca Falls, NY



Journal Papers


1.         Jenkins, J.A. and D.D. Ourth.  1990.  Membrane damage to Escherichia coli and bactericidal kinetics by the alternative complement pathway of channel catfish.  Comparative Biochemisty and Physiology, 97B:477-481.


2.         Jenkins J.A., R. Rosell, D.D. Ourth, and L.B. Coons.  1991.  Electron microscopy of bactericidal effects produced by the alternative complement pathway of channel catfish.  Journal of Aquatic Animal Health, 3:16-22.


3.         Jenkins, J.A. and D.D. Ourth.  1993.  Opsonic effect of the alternative complement pathway on channel catfish peripheral blood phagocytes.  Veterinary Immunology and Immunopathology, 39:447-459.


4.         Jenkins, J.A. and P.W. Taylor.  1995.  An alternative bacteriological medium for the isolation of Aeromonas spp.  Journal of Wildlife Diseases, 31:272-275.


5.         Jenkins, J.A. and T.R. Tiersch.  1997.  A preliminary bacteriological study of refrigerated channel catfish sperm.  Journal of the World Aquaculture Society, 28:282-288. 


6.         Jenkins, J.A. and P.H. Klesius.  1998.  Elicitation of macrophages from the peritoneal cavity of channel catfish.  Journal of Aquatic Animal Health, 10:69-74.


7.         El Gamal, A.A., K.B. Davis, J.A. Jenkins, and E.L. Torrans.  1999.  Induction of triploidy and tetraploidy in Oreochromis niloticus (L.) Journal of the World Aquaculture Society, 30:269-275.



8.         Segovia, M., J.A. Jenkins, C. Paniagua-Chavez, and T.R. Tiersch.  2000.  Flow cytometric evaluation of antibiotic effects on viability and mitochondrial function of stored sperm of Nile tilapia.  Theriogenology, 53:1489-1499.


9.         Cardenas, W., J.A. Jenkins, and J.R. Dankert.  2000.  A flow cytometric approach to the study of crustacean cellular immunity.  Journal of Invertebrate Pathology, 76:122-199.


10.     Gomez, M.C., J.A. Jenkins, A. Giraldo, R.F. Harris, A. King, B.L. Dresser, and C.E. Pope.  2003.  Nuclear transfer of synchronized African wild cat somatic cells into enucleated domestic cat oocytes.  Biology of Reproduction, 69:1032-1041. doi:10.1095/biolreprod.102.014449


11.     Gauthier, J.M., J.A. Jenkins, J.P. LaPeyre.  2004.  Flow cytometric analysis of lectin binding to in vitro-cultured Perkinsus marinus surface carbohydrates.  Journal of Parasitology, 90:446-454.


12.     Cardenas, W., J.R. Dankert, and J.A. Jenkins.  2004.  Flow cytometric analysis of crayfish haemocytes activated by lipopolysaccharides.  Fish and Shellfish Immunology, 17:223-233.


13.     Salinas-Flores, L., C.G. Paniagua-Chavez, J.A. Jenkins, T.R. Tiersch.  2005.  Cryopreservation of sperm of red abalone (Haliotis rufescens).  Journal of Shellfish Research, 24:415-420.


14.     Paniagua-Chavez, C.G., J. Jenkins, M. Segovia, T.R. Tiersch.  2006.  Assessment of gamete quality for the eastern oyster (Crassostrea virginica) by use of fluorescent dyes.  Cryobiology 53:128-138.


15.     Jenkins, J.A. and J.F. LaPeyre.  2006.  Cell proliferation detected with flow cytometric cell cycle analysis and immunohistochemical detection of proliferating cell nuclear antigen (PCNA) from somatic tissues of eastern oysters, Crassostrea virginicaEnvironmental Bioindicators, 1:177-190.


16.     Jenkins, J.A. and R.G. Thomas.  2007.  Use of eyeballs for establishing ploidy of Asian carp. North American Journal of Fisheries Management, 27:1195-1202. 


17.     Liesl Nel-Themaat, M.C. Gómez, C.E. Pope, M. Lopez, G. Wirtu, J.A Jenkins, A. Cole, B.L. Dresser, K.R. Bondioli, and R.A. Godke.  2008.  Cloned embryos from semen. Part 2:  Intergeneric nuclear transfer of semen-derived eland (Taurotragus oryx) epithelial cells into bovine oocytes.  Cloning and Stem Cells, 10:161-172. doi:10.1089/clo.2007.0069


18.     Horváth, Á., W.R. Wayman, J.C. Dean, B. Urbányi, T.R. Tiersch, S.D. Mims, D. Johnson, and J.A. Jenkins.  2008. Viability and fertilizing capacity of cryopreserved sperm from three North American acipenseriform species: retrospective study.  Journal of Applied Ichthyology, 24: 443-449.


19.     Chacón, L., M.C. Gómez, J.A. Jenkins, S.P. Leibo, G. Wirtu, B.L. Dresser, C.E. and Pope.  2009.  Production of bovine cloned embryos with donor cells frozen at a slow cooling rate in a conventional freezer (-20°C).  Zygote, 17: 341-351. Cambridge Journals.


20.     Len, J.A., J.A. Jenkins, B.E. Eilts, D.L. Paccamonti, S.K. Lyle, G. Hosgood.  2010.  Immediate and delayed (after cooling) effects of centrifugation on equine sperm.  Theriogenology, vol. 73, no. 2 (January 2010), pp. 225-231.


21.     Gómez, M.C., M.A Serrano, C.E, Pope, J.A. Jenkins, M.N. Biancardi, M. López, C. Dumas, J. Galiguis, and B.L Dresser.  2010.  Derivation of cat embryonic stem-like cells from in vitro-produced blastocysts on homologous and heterologous feeder cells.  Theriogenology, 74:498-515.


22.     Chacón, L., M.C. Gómez, J.A. Jenkins, S.P. Leibo, G. Wirtu, B.L. Dresser, C. Earle Pope.  2010.  Effect of cryopreservation and in vitro culture of bovine fibroblasts on histone acetylation levels and in vitro development of hand-made cloned embryos.  Zygote, 19:255-264.   doi:10.1017/S0967199410000316.


23.     Jenkins, J.A., B.E. Eilts, A.M. Guitreau, C.R. Figiel, R.O. Draugelis-Dale, and T.R. Tiersch.  2011.  Sperm quality assessments for endangered razorback suckers Xyrauchen texanusReproduction, 141:55-65.   


24.     Blazer, V.S., L.R. Iwanowicz, H. Henderson, P.M. Mazik, J.A. Jenkins, D.A. Alvarez, and J. A. Young, and.  2012.  Reproductive endocrine disruption in smallmouth bass (Micropterus dolomieu) in the Potomac River basin: spatial and temporal comparisons of biological effects.  Environmental Monitoring and Assessment, 184: 4309-4334.;


25.     M.C. Gómez, M.N. Biancardi, J.A. Jenkins, C. Dumas, J. Galiguis, G. Wang, and C. Earle Pope.  2012.  Scriptaid and 5-aza-2’deoxycytidine enhanced expression of pluripotent genes and in vitro developmental competence in interspecies Black-footed cat cloned embryos.  Reproduction in Domestic Animals, 47, Supplement 6. as part of the 7th quadrennial, International Symposium on Canine and Feline Reproduction (ISCFR-2012).  pp 1-6.  doi: 10.1111/rda. 12027.\ .\  IP-038422.


26.     Jenkins, J.A., S.B. Hartley, J. Carter, D.J. Johnson, and J.B. Alford.  2013.  A geographic information system tool for aquatic resource conservation for the Red and Sabine River watersheds in the southeast US.  River Research and Applications, 29: 99-124.


27.     Blazer, V.S., AE. Pinkney, J.A. Jenkins, L.R. Iwanowicz, S.D. Zaugg, S. Minkkinen, R.O. Draugelis-Dale, and J.H. Uphoff.  2013. Reproductive health of the yellow perch Perca flavescens in selected tributaries of the Chesapeake Bay.  Science of the Total Environment 447:198-209.  IP-042717.;


28.     Eljarah, A., J. Chandler, J.A. Jenkins, J. Chenevert, and A. Alcanal.  2013.  Usefulness of hemocytometer as a counting chamber in a computer assisted sperm analyzer (CASA): Animal Reproduction, v. 10, no. 4, p. 708-711. ( ) (Oct/Dec. 2013)  IP-035473: BAO Approval: Powell, J.; 9/27/2013


29.     Jenkins, J.A., H.M. Olivier, R.O. Draugelis-Dale, B.E. Eilts, L. Torres, R.  Patiño, E. Nilsen, and S.L. Goodbred.  2014.   Assessing reproductive and endocrine parameters in male largescale suckers (Catostomas macrocheilus) along a contaminant gradient in the lower Columbia River, USA. Science of the Total Environment, 484:365-378, Available online 31 October 2014, at . [INVITED] IP-046167. BAO approval 9/27/13.


30.     Wittmann, M.E., C.L. Jerde, J.G. Howeth, S.P. Maher, A.M. Deines, J.A. Jenkins, G.W. Whitledge, S.R. Burbank, W.L. Chadderton, A.R. Mahon, J.T. Tyson, C.A. Gantz, R.P. Keller, J.M. Drake, D.M. Lodge.  2014.  Grass carp in the Great Lakes Region: Establishment potential, expert perceptions, and re-evaluation of experimental evidence of ecological impact.  Canadian Journal of Fisheries and Aquatic Sciences, 71:992-999.  Available online March 4, 2014. IP-045070. BAO approval 2/6/14.


31.     Chapman, D.C., J.J. Davis, J.A. Jenkins, P.M. Kocovsky, J.G. Miner, J. Farver, and P.R. Jackson.  2013.  First evidence of grass carp recruitment in the Great Lakes Basin. Journal of Great Lakes Research, 39:547-554.  IP 046145 (BAO approval 08/16/2013) .


32.     Jenkins, J.A. (Chair), H. L. Bart, Jr., J. D. Bowker, P. R. Bowser, J. R. MacMillan, J. G. Nickum, J. W. Rachlin J. D. Rose, P. W. Sorensen, B. E. Warkentine, and G. W. Whitledge.  2014.  Guidelines for use of fishes in research — Revised and expanded, 2014.  Fisheries, 39:415-416.  (; Published online September 29. IP 052256; BAO approval 12/10/13.


33.     Jenkins, J.A., R.O. Draugelis-Dale, A.E. Pinkney, L. Iwanowicz, and V.S. Blazer.  2015.  Flow cytometric method for measuring chromatin fragmentation in fixed sperm from yellow perch (Perca flavescens). Theriogenology, 83: 920-931. IP 048922  BAO approval 9/26/14


34.     Patiño, R., M.M. VanLandeghem, S.L. Goodbred, E. Orsak, J.A. Jenkins, K. Echols, M.R. Rosen, L. Torres.  Online 9 January 2015.  Novel associations between contaminant body burdens and biomarkers of reproductive condition in male Common Carp along multiple gradients of contaminant exposure in Lake Mead National Recreation Area, USA.  General and Comparative Endocrinology. approval 12/19/14.  IP-059505


35.     Goodbred, S.L., R. Patiño, L. Torres, K.R. Echols, J.A. Jenkins, M.R. Rosen, and E. Orsak. Online 27 Feb. 2015. Are endocrine and reproductive biomarkers altered in contaminant-exposed wild male Largemouth Bass (Micropterus salmoides) in Lake Mead, Nevada/Arizona, U.S.A.?  General and Comparative Endocrinology.  BAO approval 9/2/14.  IP-059171.





36.     Nickum, J.G., H. L. Bart, Jr., P.R. Bowser, I. E. Greer, C. Hubbs, J. A. Jenkins, J. R. MacMillan, J. W. Rachlin, J. D. Rose, P. W. Sorensen, and J. R. Tomasso.  2004.  Guidelines for the use of fishes in research.  Special Publication.  The AFS, American Institute of Fisheries Research Biologists, American Society of Ichthyologists and Herpetologists.


37.     Use of Fishes in Research Committee (joint committee of the American Fisheries Society, the American Institute of Fishery Research Biologists, and the American Society of Ichthyologists and Herpetologists). 2014. Guidelines for the use of fishes in research. American Fisheries Society, Bethesda, Maryland. 90 pp.  BAO approval 3/12/14. [INVITED] IP-043958


Book Chapters


38.     Jenkins, J.A.  2000.  Infectious Disease and Quality Assurance Considerations for the Transfer of Cryopreserved Fish Gametes.  In Cryopreservation in Aquatic Species.  Tiersch, T.R. and P.M. Mazik, Editors.  WAS.  Baton Rouge, Louisiana.  pp. 343-363.


39.     Jenkins, J.A.  2000.  Regulatory Considerations for the Global Transfer of Cryopreserved Fish Gametes.  In Cryopreservation in Aquatic Species.  Tiersch, T.R. and P.M. Mazik, Editors.  The World Aquaculture Society.  Baton Rouge, Louisiana.  pp. 364-379.


40.     Jenkins, J.A.  2000.  Minimizing Microbial Contamination of Sperm Samples.  In Cryopreservation in Aquatic Species.  Tiersch, T.R. and P.M. Mazik, Editors.  The World Aquaculture Society.  Baton Rouge, Louisiana.  pp. 276-279.


41.     Tiersch, T.R. and J.A. Jenkins.  2003.  Biosecurity and regulatory considerations for transfer of cryopreserved sperm and early life stages of aquatic species.  In Biosecurity in Aquaculture Production Systems:  Exclusion of Pathogens and Other Undesirables.  Lee, C.S. and P.J. O’Bryen, Editors.  The World Aquaculture Society, Baton Rouge, Louisiana, United States.  pp. 171-198. INVITED]


42.     Tiersch, T.R., H. Yang, J.A. Jenkins, and Q. Dong.  2007.  Sperm cryopreservation in fish and shellfish, In Spermatology.  Roldan, E.R.S., and Gomendio, M., Editors.  Society of Reproduction and Fertility Supplement 65, Nottingham, United Kingdom, Nottingham Univ. Press, pp. 493-508. 


43.     Papoulias, D.M., Candrl J, Jenkins JA, and Tillitt DE.  2011.  Verification of ploidy and reproductive potential in triploid black carp (Mylopharyngodon piceus) and grass carp (Ctenopharyngodon idella)In: Chapman DC, Hoff MH (eds), Invasive Asian Carps in North America. American Fisheries Society Symposium 74, Bethesda, Maryland. pp 251-266.


44.     Thomas RG, J.A. Jenkins, and J. David.  2011.  Occurrence and distribution of Asian carps in Louisiana. In: Chapman DC, Hoff MH (eds), Invasive Asian Carps in North America. American Fisheries Society Symposium 74, Bethesda, Maryland.  pp. 239-250.


45.     Jenkins, J.A.  2011.  Male Germplasm in Relation to Environmental Conditions: Synoptic Focus on DNA, Chapter 16. In: Cryopreservation in Aquatic Species, 2nd Edition. T. R. Tiersch and C. C. Green, editors.  The World Aquaculture Society, Baton Rouge, Louisiana. pp. 227-239.


46.     Jenkins, J. A.  2011.  Minimizing Microbial Contamination of Sperm Samples, Chapter 53.  In: Cryopreservation in Aquatic Species, 2nd Edition. T. R. Tiersch and C. C. Green, editors. The World Aquaculture Society, Baton Rouge, Louisiana. pp. 684-687.


47.     Jenkins, J. A.  2011.  Infectious Disease and Quality Assurance Considerations for the Transfer of Cryopreserved Fish Gametes, Chapter 96. In: Cryopreservation in Aquatic Species, 2nd Edition. T. R. Tiersch and C. C. Green, editors. World Aquaculture Society, Baton Rouge, Louisiana. pp. 939-959.


48.     Jenkins, J. A.  2011.  Regulatory Considerations for Global Transfer of Cryopreserved Fish Gametes, Chapter 97. In: Cryopreservation in Aquatic Species, 2nd Edition. T. R. Tiersch and C. C. Green, editors. World Aquaculture Society, Baton Rouge, Louisiana. pp. 960-976.


49.     Olivier, H.M., Jenkins, J.A. 2015. Proper handling of animal tissues from the field to the laboratory supports reliable biomarker endpoints. In: Impacts of Oil Spill Disasters on Marine Habitats and Fisheries in North America. Marine Biology Series (Eds. J.B. Alford, M.S. Peterson, C.C. Green), CRC Press, Boca Raton, FL, pp. 81-93. IP 046164 BAO approval 10/23/13.



Journal Papers


1.         Jenkins, J.A., R. Draugelis-Dale, R.P. Glennon, A.M. Kelly, B.L. Brown, H.M. Olivier, and J.R. Morrison.  Accepted with revision as of 7,5,15, see accompanying pdf.  An accurate method for assessing triploid induction of fish larvae.  Aquaculture.  IP-065097,


2.         Olivier, H.M., J. A. Jenkins, J. Carter, M. Berhow.  Accepted.  Testing of a natural and a synthetic molluscicide for controlling invasive maculata Apple Snails (Pomacea maculata).  Bulletin for Environmental Contamination and Toxicology. IP-063248. Journal initially accepted it due to its importance and timeliness but asked for chemical recovery information.  Thus, it is in final review, see accompanying pdf.


3.         Glorioso, B.M., J.H. Waddle, J.A. Jenkins, H.M. Olivier, R.R. Layton. In press.  Hyla chrysoscelis (Cope’s Gray Treefrog) x Hyla cinerea (Green Treefrog): Putative natural hybrid.  Herpetological review. IP-059584. BAO approval 6/23/15.  See accompanying pdf.


4.         Whitledge, G.W, D.C. Chapman, J.A. Jenkins, J. Bailey, D. Nicks. 2015 accepted. Evidence of black carp recruitment in the Mississippi River.  American Fisheries Society 145th Annual Meeting, August 15-20, Portland, Oregon. Abs. #19942.  IP-063953.  BAO approval 3/7/15. 


5.         Jenkins, J.A., H.M. Olivier, R.O. Draugelis-Dale, C. Lavelle, A. Mehinto, N. Denslow, and D.E. Tillitt.  2015 accepted.  DNA fragmentation and repair in Gulf Sturgeon (Acipenser oxyrinchus desotoi) following the Deepwater Horizon Oil Spill.  Society for Environmental Toxicology and Chemistry 36th Annual meeting.  Salt Lake City, Utah.  11/1-5/15.  IP-065960.  BAO Approval 5/27/15.  TO PRESENT.  See accompanying pdf.


6.         Lavelle, C.M., A.C. Mehinto, J.A. Jenkins, H.M. Olivier, N. Denslow, D. Tillitt.  2015 accepted. Transcriptomic and Cell Process Pathways Altered by Laboratory Exposure of Shovelnose Sturgeon to Oil from the Deepwater Horizon Event.  Society for Environmental Toxicology and Chemistry 36th Annual meeting.  Salt Lake City, Utah.  IP-065962.  BAO Approval 5/27/15.



My Science Topics

Science Topic
Ecology and Environmentaquatic ecosystems
Ecology and Environmentenvironmental assessment
Ecology and Environmentestuarine ecosystems
Ecology and Environmentfreshwater ecosystems
Plants and Animalsendangered species
Plants and Animalsinvasive species
Water Resourcesdomestic water use
Water Resourcesestuaries
Water Resourcesrunoff
Water Resourcessediment transport
Water Resourceswater quality
Natural Resourcesfishery resources
Natural Resourcesinland fisheries
Natural Resourcesmarine fisheries
Natural Hazardshazards
Natural Hazardshurricanes
Techniques and Methodsimage analysis
Techniques and Methodslaboratory methods
Environmental Issuescontamination and pollution
Environmental Issueshealth and disease
Environmental Issueshuman impacts
Environmental Issuesindustrial pollution
Environmental Issuesland use change
Environmental Issuesnonpoint-source pollution
Environmental Issuespesticides and herbicides
Environmental Issuespharmaceuticals

My USGS Science Strategy Areas

Understanding Ecosystems & Predicting Ecosystems Change

The Role of Environment and Wildlife in Human Health

Biomarker Research

Jenkins’ efforts emphasize the study of potential impacts of environmental stressors at the cellular and molecular levels. Her major areas of focus include biomarker development, endocrine disruption, genetics, and comparative immunology.  Key laboratory biotechnologies she uses are photomicroscopy and flow cytometry.  Primary cell types studied are blood and spermatozoa, and assays are tailored to the particular species requirements and hypotheses being addressed. 


Jenkins specializes in the development and application of biomarkers; these are measures of variables that respond in quantifiable ways to changes in the environment.  The choice of particular biomarkers at specific biological levels of organization (such as genetic, cellular, tissue, hormonal, and organismal levels) depends on the study at hand.  Because molecular and biochemical responses of cells are preceded by chemical changes in nuclei, cytoplasm, membranes, and extracellular fluids, these responses can be diagnostic and contribute to an assessment of ecosystem health.



Active Projects.

  1. Differentiation of Pallid (Scaphirhynchus albus) from Shovelnose Sturgeon (Scaphirhynchus platorynchus) by High Resolution DNA Analysis:  Because morphological similarity between the species complicates their identification, flow cytometry data on genome size and nuclear parameters are being combined with classic molecular biology and morphometric results for species discrimination.
  2. DOI Deepwater Horizon Gulf Sturgeon (Acipenser oxyrhynchus desotoi) Injury Assessment.  (
  3. Developing the “Gold Standard” for Ploidy Determinations of Grass Carp (Ctenopharyngodon idella) and Black Carp (Mylopharyngodon piceus) in a “Community of Practice". Overall, the research addresses strategies in the Asian Carp Management and Control Plan’s ( 1) assisting science of the National Triploid Grass Carp Inspection and Certification Program (NTGCICP); 2) supporting aquaculture production of triploids of Asian carp species; 3) documenting ploidy occurrence, relevant to dispersal dynamics; 4) aiding managers at barriers; 5) modeling breeding potential; 6) generating triploids or monosex tetraploids, and; 7) facilitating R&D of transgenics. 
  4. Cell and Biomarkers for Assessing the Influence of Systemic Insecticides on Amphibians, Honey Bees, and Native Bees.  Germplasm and other cell characters are being established and functional cell and molecular assays are being used for assessing potential influences on cell function and molecular pathways.  

Figure 1.  Phylogenetic tree displaying species studied by using flow cytometry

Image of

Contact Information

Jill Jenkins
700 Cajundome Blvd
Lafayette, LA 70506
337-266-8592 - Fax
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