ALVINA MEHINTO – Molecular Toxicologist


Ph.D., Biological Sciences, University of Exeter, United Kingdom, 2010

B.S., Marine Biology, University of Portsmouth, United Kingdom, 2005


Dr. Mehinto specializes in toxicogenomics analyses of aquatic organisms exposed to environmental contaminants. Her current research is on the development of molecular toxicity identification evaluation (TIE) methods to improve water and sediment quality assessment. She also works with the Chemistry Department to develop in vitro bioassays for monitoring of chemicals of emerging concern (CECs) in aquatic ecosystems.

Skills and training include toxicogenomics analyses, aquatic toxicity testing, bioanalytical screening and LC-MS based metabolomics. Prior to joining SCCWRP, her postdoctoral research focused on the development of microarrays to assess the transcriptomic responses of non-model fish species exposed to natural and man-made chemicals.


Senior scientist, Southern California Coastal Water Research Project. Costa Mesa, CA. 2016-present

Scientist, Southern California Coastal Water Research Project. Costa Mesa, CA. 2013-2016

Visiting Postdoctoral Researcher, University of Berkeley. Berkeley, CA. 2012

Postdoctoral Research Associate, University of Florida. Gainesville FL. 2010-2012

Camp Instructor, CAP Monde. Louveciennes France. 2010

Visiting PhD Student, University of Sussex. Falmer, United Kingdom. 2008

Graduate Teaching Assistant, University of Exeter. United Kingdom. 2005-2009


KC Donnelly Externship Award, NIEHS Superfund Research Program (2011)

CVM Spring Faculty Research Grant, University of Florida (2011)

SfAM President’s Fund Award (2008)

Student Travel Grant, Society for General Microbiology (2008)

Student Travel Grant, Society for General Microbiology (2007)

Wiley-Steentoft Prize for Marine Biology, University of Portsmouth (2005)


Board Member, Society of Environmental Toxicology and Chemistry, Southern California Chapter (2017-Present)

Editorial Board, Environmental Toxicology and Chemistry (2017-Present)

Reviewer for Environmental Toxicology and Chemistry, Chemosphere, Aquatic Toxicology, Environmental Science and Technology (2014- )


Society of Toxicology

Society of Environmental Toxicology and Chemistry


Mehinto, A.C., K. Kroll,  B.S. Jayasinghe, C.M. Lavelle, D.R. VanDervort, O.K. Adeyemo, S.M. Bay, K.A. Maruya, N.D. Denslow. Linking in vitro estrogenicity to adverse effects in the inland silverside (Menidia beryllina). Environmental Toxicology and Chemistry doi: 10.1002/etc.4024 [Epub].

Mehinto, A.C., D.R. VanDervort, W. Lao, G. He, M.S. Denison, S.M. Vliet, D.C. Volz, R.D. Mazor, K.A. Maruya. 2017. High throughput in vitro and in vivo screening of inland waters of Southern California. Environmental Science: Processes & Impacts 19:1142-1149.

Martinovic-Weigelt D, Mehinto AC, Ankley GT, Berninger JP, Collette TW, Davis JM, Denslow ND, Durhan EJ, Eid E, Ekman DR, Jensen KM, Kahl MD, LaLone CA, Teng Q, Villeneuve DL. Derivation and evaluation of putative adverse outcome pathways for the effects of cyclooxygenase inhibitors on reproductive processes in female fish. Accepted in Toxicological Sciences.

Mehinto AC, Jayasinghe BS, VanDervort DR, Denslow ND, Maruya KA (2016). Screening for endocrine activity in water using commercially available in vitro transactivation bioassays. Accepted in Journal of Visualized Experiments.

Crago J, Xu EG, Kupsco A, Jia F, Mehinto AC, Lao W, Maruya KA, Gan J, Schlenk D (2016). Trophic transfer and effects of DDT in male hornyhead turbot (Pleuronichthys verticalis) from Palos Verdes Superfund site, CA (USA) and comparisons to field monitoring. Environmental Pollution 213: 940-948.

Maruya KA, Dodder NG, Mehinto AC, Denslow ND, Schlenk D, Snyder SA, Weisberg SB (2015). A tiered, integrated biological and chemical monitoring framework for contaminants of emerging concern (CECs) in aquatic ecosystems. Integrated Environmental Assessment and Management 12: 540-547.

Vidal-Dorsch DE, Bay SM, Moore S, Layton B, Mehinto AC, Vulpe CD, Brown-Augustine M, Loguinov A, Poynton H, Garcia-Reyero N, Perkins EJ, Escalon L, Denslow ND, Cristina CR, Doan T, Shukradas S, Bruno J, Brown L, Van Agglen G, Jackman P, Bauer M (2015). Ecotoxicogenomics: Microarray interlaboratory comparability. Chemosphere 144: 193-200. 

Mehinto AC, Jia A, Snyder SA, Jayasinghe BS, Denslow ND, Crago J, Schlenk D, Menzie C, Westerheide SD, Leusch FD, Maruya KA (2015). Interlaboratory comparison of in vitro bioassays for screening of endocrine disrupting chemicals in recycled water. Water Research 83: 303-309.

Mehinto, A.C., M.S. Prucha, R.C. Colli-Dula, K.J. Kroll, C.M. Lavelle, D.S. Barber, C.D. Vulpe, N.D. Denslow. 2014. Gene networks and toxicity pathways induced by acute cadmium exposure in adult largemouth bass (Micropterus salmoides). Aquatic Toxicology 152:186-194.

Martinovic-Weigelt, D., A.C. Mehinto, G.T. Ankley, N.D. Denslow, L.B. Barber, K.E. Lee, H.L. Schoenfuss, A.L. Schroeder, and D.L. Villeneuve. 2014. Transcriptomic effects-based monitoring for endocrine active chemicals: Assessing relative contribution of treated wastewater to downstream pollution. Environmental Science and Technology 48:2385-2394.

Escher, B.I., M. Allinson, R. Altenburger, P.A. Bain, P. Balaguer, W. Busch, J. Crago, N.D. Denslow, E. Dopp, K. Hilscherova, A.R. Humpage, A. Kumar, M. Grimaldi, B.S. Jayasinghe, B. Jarosova, A. Jia, S. Makarov, K.A. Maruya, A. Medvedev, A.C. Mehinto, J.E. Mendez, A. Poulsen, E. Prochazka, J. Richard, A. Schifferli, D. SchlenK, S. Scholz, F. Shiraishi, S. Snyder, G. Su, J.Y. Tang, B.V. Burg, S.C. Linden, I. Werner, S.D. Westerheide, C.K. Wong, M. Yang, B.H. Yeung, X. Zhang, and F.D. Leusch. 2014. Benchmarking organic micropollutants in wastewater, recycled water and drinking water with in vitro bioassays. Environmental Science and Technology 48:1940-1956.

Christiansen, H.E., A.C. Mehinto, F. Yu, R.W. Perry, N.D. Denslow, A.G. Maule, and M.G. Mesa. 2014. Correlation of gene expression and contaminant concentrations in wild largescale suckers: A field-based study. Science of the Total Environment 484:379-389.

Mehinto, A.C., C.J. Martyniuk, D.J. Spade, and N.D. Denslow. 2012. Applications for next-generation sequencing in fish ecotoxicogenomics. Frontiers in Genetics 3:62. 

Lorenzi, V., A.C. Mehinto, N.D. Denslow, and D. Schlenk. 2012. Effects of exposure to the β-blocker propanolol on the reproductive behavior and gene expression of the fathead minnow, Pimephales promelas. Aquatic Toxicology 116-117:8-15.

Sellin-Jeffries, .M.K., A.C. Mehinto, B. Carter, N.D. Denslow, and A.S. Kolok. 2012. Taking microarrays to the field: Differential hepatic gene expression of caged fathead minnows from Nebraska watersheds. Environmental Science and Technology 46:1877-1885.

Huang, T., H.V. Deoghare, B.K. Smith, T.M. Beaver, H.V. Baker, A.C. Mehinto, and D.A. Martin. 2011. Gene expression changes in the human diaphragm following cardiothoracic surgery. Journal of Thoracic and Cardiovascular Surgery 142:1214-1222.

Mehinto, A.C., E.M. Hill, and C.R. Tyler. 2010. Uptake and biological effects of environmentally relevant concentrations of the non-steroidal anti-inflammatory pharmaceutical diclofenac in rainbow trout (Oncorhynchus mykiss). Environmental Science and Technology 44:2176-2182.


Denslow N, Kroll K, Jayasinghe S, Adeyemo O, Lavelle C, Li E, Mehinto A, Bay S, Maruya K (2017). Linkage of in vitro assay results with in vivo endpoints – Phases 1 and 2 Final Report. Prepared for San Francisco Estuary Institute, Richmond, CA. 

Li D, Rabe A, Robinson C, Mehinto A, Young K, Asato S, Dorsey J (2015). The potential impact of 17b-estradiol on larval topsmelt development – Special Study Final Report. Prepared for City of Los Angeles Bureau of Sanitation, CA.

Dodder NG, Mehinto AC, Maruya KA (2015). Monitoring of constituents of emerging concern (CECs) in California's aquatic ecosystems - Pilot study design and QA/QC guidance. Southern California Coastal Water Research Project Authority, Technical Report 854.


Mehinto A. 2017. Linking bioanalytical methods to biological effects. State Water Board Workshop on Constituents of Emerging Concern and Aquatic Ecosystem Monitoring. May 1, 2017. Sacramento, CA, USA. 

Mehinto A. 2017. New bioanalytical screening tools to monitor constituents of emerging concern. California Regional Water Quality Control Board, San Diego Region, April 12, 2017. San Diego, CA. 

Mehinto A.C. VanDervort D., Kroll K., Bay S., Denslow N., Maruya K. 2016. Cell-based receptor assays to screen for endocrine disrupting chemicals and infer toxicity in California waters. Oral presentation at 37th North American Society of Environmental Toxicology and Chemistry Conference, Orlando, FL.

Mehinto A.C, Jayasinghe B.S., Kroll K., Bay S., Maruya K., Denslow N. 2014. Linkages between in vitro assays, molecular biomarkers and traditional toxicity endpoints using the inland silverside Menidia beryllina. Oral presentation at 35th North American Society of Environmental Toxicology and Chemistry Conference, Vancouver, BC, Canada.

Mehinto A.C. 2014. Development of in vitro and in vivo bioassays for environmental monitoring and assessment. Invited speaker at Scripps OHH Conference, La Jolla, CA, USA.

Mehinto, A.C., B. Gaytan, R.C. Colli-Dula, V. DeLa Rosa, C. Vulpe, and N.D. Denslow. 2012. Comparative toxicogenomic analyses to elucidate the mechanisms of toxicity of SRP chemicals. Invited speaker at the 25th Annual Superfund Research Program Conference. Raleigh, NC.

Mehinto, A.C., D. Martinovic-Weigelt, and N.D. Denslow. 2012. Estrogenic contribution of wastewater effluent and its impact of fish transcriptomic profile. Presented at the 7th International Symposium on Fish Endocrinology. Buenos Aires, Argentina.

Mehinto, A.C., K.J. Kroll, D.S. Barber, and N.D. Denslow. 2011. Assessment of cadmium toxicity in the liver and gonads of adult largemouth bass (Micropterus salmoides) using microarrays. Presented at the SETAC 32nd North American Society of Environmental Toxicology and Chemistry Conference. Boston, MA.

Mehinto, A.C., R.C. Colli-Dula, K.J. Kroll, C. Vulpe, D.S. Barber, and N.D. Denslow. 2011. Investigating the mechanisms of toxicity induced by cadmium, benzene and trichloroethylene in largemouth bass (Micropterus salmoides) using microarrays. Presented at the 24th Annual Superfund Research Program Conference. Lexington, KY.

Mehinto, A.C., K.J. Kroll, A. Cuenca-Navarro, R.C. Colli-Dula, D.S. Barber, and N.D. Denslow. 2011. Genomic responses of largemouth bass (Micropterus salmoides) to cadmium at low dose. Presented at PRIMO 16: Pollutant Responses in Marine Organisms. Long Beach, CA.

Mehinto, A.C., H.E. Elks, E.M. Hill, S.K. Burton, and H.M. Lappin-Scott. 2008. Fate of human pharmaceuticals in the aquatic environment: biodegradation and toxicity on aquatic microbes. Presented at the Society for General Microbiology Spring Meeting. Edinburgh, United Kingdom.

Mehinto, A.C., E.M. Hill, S.K. Burton, and H.M. Lappin-Scott. 2008. Ecotoxicity and biodegradability of the pharmaceutical diclofenac in the aquatic environment. Presented at the 12th International Symposium on Microbial Ecology. Cairns, Australia.

Mehinto, A.C., S.K. Burton, E.M. Hill, C.R. Tyler, and H.M. Lappin-Scott. 2007. Pharmaceuticals in the environment: toxicity on aquatic microbes. Presented at the Society for General Microbiology 160th Meeting. Manchester, United Kingdom.