Patrick M Larkin

Patrick M Larkin,


Department: Large Animal Clinical Sciences
Business Phone: (352) 281-0323
Business Email:

About Patrick M Larkin

Dr. Larkin is the Program Director of the online undergraduate Dog, Cat, & Horse Classes that are offered here at the College of Veterinary Medicine. He is also the Technical Administrator of The Visual Guide of Animal Reproduction database.

The Dog Class (VME-3001) is an online course (3 credits) specifically designed for undergraduate students that are planning careers in Veterinary Medicine and Veterinary Technical Programs. Students that take the class are introduced to a number of topics, including evolution, domestication, anatomy, biology, role in society, physiology, behavior, and health of the dog.

The Cat Class (VME-3002) is an online course (3 credits) specifically designed for undergraduate students planning careers in Veterinary Medicine and Veterinary Technical Programs. Students that successfully complete the class will learn about number of topics, including anatomy, neuroscience, urology, endocrinology, reproduction, various feline medical case studies, shelter medicine, and health of the cat.

The Horse Course (VME-4906 or VME-6934) is an online course (3 credits) for upper level undergraduate students, post-baccalaureate students, or graduate students. The class is designed for students planning careers in large animal Veterinary Medicine or Veterinary Technical Programs. This course covers many important topics in the domesticated horse field including reproduction, anatomy, the musculoskeletal system, GI physiology, preventative health care, as well as current research. Students enrolled at any College or University can take this course.

The Visual Guide of Animal Reproduction (VisGAR) database contains a collection of curated images in a variety of species that are utilized as an important educational resource by practicing DVMs, researchers, and students around the world.


Featured Scientist
2019 · Cade Museum for Creativity and Invention
Online education excellence award
2015 · University of Florida
Invited reviewer
2013 · 3rd edition biology textbook “What is Life: A guide to Biology
Provost’s Award in Recognition of Teaching and Learning Excellence
2010 · Santa Fe College

Research Profile

— Developing molecular diagnostics for the seafood industry that can be used to distinguish high value seafood items (i.e. grouper) from commonly substituted lower value fish like tilapia

— Examining the impacts of anthropogenic chemical at the molecular level in a variety of species including fish (sheepshead minnows, fathead minnows, and largemouth bass) , invertebrates (grass shrimp and blue crabs), and dolphins


Succession/Transition planning today for the future of your agribusiness
Ranch Management: Managerial Accounting
Species Identification Using other Tools
The Seafood Industry: Species, Products, Processing, and Safety, Second Edition. 134-143
Altered gene expression in the brain and liver of female fathead minnows exposed to fadrozole: discovery-driven analysis using a 2000 gene microarray
Journal of Fish Biology. 72:2281-2340
A graphical systems model to facilitate hypothesis-driven ecotoxicogenomics research on the teleost brain-pituitary-gonadal axis.
Environmental science & technology. 41(1):321-30 [PMID] 17265966.
View on: PubMed
Development and validation of a 2,000-gene microarray for the fathead minnow (Pimephales promelas).
Environmental toxicology and chemistry. 26(7):1497-506 [PMID] 17665692.
View on: PubMed
Molecular and whole animal responses of grass shrimp, Palaemonetes pugio, exposed to chronic hypoxia
Journal of Experimental Marine Biology and Ecology. (342):16-31
Pesticide induced alterations in gene expression in the lobster, Homarus americanus.
Comparative biochemistry and physiology. Part D, Genomics & proteomics. 2(1):44-52 [DOI] 10.1016/j.cbd.2006.11.004. [PMID] 20483277.
Use of the nucleic acid molecule as a biomarker in environmental research
Environmental Bioindicators. 1:6-8
Utilizing new technologies for bioindicator research
Environmental Bioindicators. 1:40-59
Approaches in Proteomics and Genomics for Eco-Toxicology, in Biochemistry and Molecular Biology of Fishes
Environmental Toxicology. 85-116
Molecular and organismal indicators of chronic and intermittent hypoxia in marine crustacea
Estuarine Indicators. 261-276
Molecular Indicators of Hypoxia in Blue Crab, Callinectes sapidus
Marine Ecology Progress Series. 203-215
Effects of hypoxia on gene and protein expression in the blue crab, Callinectes sapidus.
Marine environmental research. 58(2-5):787-92 [PMID] 15178114.
View on: PubMed
Use of suppressive subtractive hybridization and cDNA arrays to discover patterns of altered gene expression in the liver of dihydrotestosterone and 11-ketotestosterone exposed adult male largemouth bass (Micropterus salmoides).
Marine environmental research. 58(2-5):565-9 [PMID] 15178083.
View on: PubMed
Analysis of gene expression profiles in largemouth bass exposed to 17-beta-estradiol and to anthropogenic contaminants that behave as estrogens.
Ecotoxicology (London, England). 12(6):463-8 [PMID] 14680325.
View on: PubMed
Differential gene expression analysis in fish exposed to endocrine disrupting compounds.
Comparative biochemistry and physiology. Part B, Biochemistry & molecular biology. 136(2):149-61 [PMID] 14529741.
View on: PubMed
Expression profiling of estrogenic compounds using a sheepshead minnow cDNA macroarray.
EHP toxicogenomics : journal of the National Institute of Environmental Health Sciences. 111(1T):29-36 [PMID] 12735107.
View on: PubMed
Array technology as a tool to monitor exposure of fish to xenoestrogens.
Marine environmental research. 54(3-5):395-9 [PMID] 12408593.
View on: PubMed
Gene expression analysis of largemouth bass exposed to estradiol, nonylphenol, and p,p’-DDE.
Comparative biochemistry and physiology. Part B, Biochemistry & molecular biology. 133(4):543-57 [PMID] 12470818.
View on: PubMed
A null mutation in guanylate cyclase-1 alters the temporal dynamics and light entrainment properties of the iodopsin rhythm in cone photoreceptor cells.
Brain research. Molecular brain research. 92(1-2):49-57 [PMID] 11483241.
View on: PubMed
The use of DNA macroarrays to evaluate the effects of environmental estrogens on wildlife
Characterization of the chicken GCAP gene array and analyses of GCAP1, GCAP2, and GC1 gene expression in normal and rd chicken pineal.
Molecular vision. 5 [PMID] 10427104.
View on: PubMed
Circadian regulation of iodopsin and clock is altered in the retinal degeneration chicken retina.
Brain research. Molecular brain research. 70(2):253-63 [PMID] 10407173.
View on: PubMed


Post-Doctoral Associate
2000-2003 · University of Florida
Doctor of Philosophy, Interdisciplinary Program, Department of Neuroscience, McKnight Brain Institute
2000 · University of Florida
Bachelor of Science in Psychology, Biology
1996 · University of Central Florida

Teaching Profile

Courses Taught
VME4906 Problems in Veterinary Science
VME3001 The Dog
VME6934 Topics in Veterinary Medical Sciences
VEM5371 Aq An Conserv Issues
VME4012 Aquatic Animal Conservation Issues
VME6010 Aquatic Animal Conservation Issues
VME3002 The Cat Class

Contact Details

(352) 281-0323