Curriculum Vitae

John D. Hatle
University of North Florida
Department of Biology
1 UNF Drive
Jacksonville, FL, USA 32224
jhatle@unf.edu; 904-620-2778
http://www.unf.edu/coas/biology/JHatle.html

EDUCATION

Post-doc, Illinois State Univ (2003), with Dave Borst, Steve Juliano, & Doug Whitman
Ph.D. Univ of Louisiana at Lafayette, USA (1998) Major advisor: Jeffrey Spring
B.A. Luther College, Decorah, Iowa, USA (1991)

PROFESSIONAL POSITIONS

Associate Professor (2008-present), Univ of North Florida
Assistant Professor (2003-present), Univ of North Florida
Post-doctoral Researcher (1998-2003), Illinois State University
Teaching Assistant (1997-1998), Univ of Louisiana at Lafayette
University Fellow (1993-1997), Univ of Louisiana at Lafayette

PUBLICATIONS (student authors underlined)

Hathaway M, Hatle JD, Li S, Ding X, Barry T, Hong F, Wood H, Borst D (2009) Characterization of hexamerin proteins and their mRNAs in the adult lubber grasshopper: the effects of nutrition and juvenile hormone on their levels. Comparative Biochemistry and Physiology A. PDF
 
Hatle JD*, Wells SM, Paterson C, Allen I, Fronstin RB, Fuller LE, Gordy LJ, Jawaid I, Lentz C, Melnyk S, Quattrochi J (2008) Reduced diet and reduced reproduction both increase lifespan in lubber grasshoppers, perhaps by independent mechanisms. 4th CPB Meeting in Africa: Mara 2008. “Molecules to migration: The pressures of life” (Ed S. Morris & A. Vosloo). Medimond Publishing Co, via Maserati 6/2, 40124 Bologna, Italy. Pgs 143-156. PDF

Hatle JD, Paterson CS, Jawaid I, Lentz C, Wells SM, Fronstin RB (2008) Protein accumulation underlying lifespan extension via ovariectomy in grasshoppers is consistent with the disposable soma hypothesis but is not due to dietary restriction. Experimental Gerontology 43:900-908. PDF

Hahn DA, James L, Milne K and Hatle JD (2008). Life history plasticity after attaining a dietary threshold for reproduction in associated with protein storage in flesh flies. Functional Ecology 22:1081-1090. PDF

Fronstin RB and Hatle JD (2008) Interpopulation variation in body mass after laying and age at oviposition, but not clutch mass, in eastern lubber grasshoppers. Journal of Orthoptera Research 17:273-277. PDF

Fronstin RB and Hatle JD (2008) A cumulative feeding threshold required for vitellogenesis can be obviated with juvenile hormone treatment in lubber grasshoppers. Journal of Experimental Biology 211:79-85. PDF

Hatle JD, SM Wells, LE Fuller, IC Allen, LJ Gordy, S Melnyk and J Quattrochi (2006) Calorie restriction and late-onset calorie restriction extend lifespan but do not alter protein storage in female grasshoppers. Mechanisms of Ageing and Development 127:883-891. PDF

Hatle JD, T Waskey Jr and SA Juliano (2005) Plasticity of grasshopper vitellogenin production in response to diet is primarily a result of changes in fat body mass. Journal of Comparative Physiology B. 176:27-34. PDF

Fei H, TR Martin, KM Jaskowiak, JD Hatle, DW Whitman and DW Borst (2005) Starvation affects vitellogenin production but not vitellogenin mRNA levels in the lubber grasshopper, Romalea microptera. Journal of Insect Physiology 51:435-443. PDF

Juliano SA, JR Olson, EG Murrell and Hatle JD (2004) Plasticity and canalization of insect reproduction: Testing alternative models of life history transitions. Ecology 81:2986-2996. PDF

Hatle JD, AL Andrews, MC Crowley and SA Juliano (2004) Interpopulation variation in developmental titers of vitellogenin, but not storage protein, in lubber grasshoppers. Physiological and Biochemical Zoology 77:631-640. PDF

Gunawardene EU, RE Stephenson, JD Hatle and SA Juliano (2004) Are reproductive tactics determined by local ecology in the eastern lubber grasshopper Romalea microptera (Orthoptera: Acrididae)? Florida Entomologist 87:119-123. PDF

Hatle JD (2003) Physiology underlying phenotypic plasticity and polyphenisms: introduction to the symposium. Integrative and Comparative Biology 43:605-606. PDF

Hatle JD, DW Borst and SA Juliano (2003) Plasticity and canalization in the control of reproduction in the lubber grasshopper. Integrative and Comparative Biology 43:635-645. PDF

Hatle JD, WA Miller and DW Borst (2003) Canalization of development and ecdysteroid timing during the last instar in lubber grasshoppers. Journal of Insect Physiology 49:73-80. PDF

Hatle JD, SA Juliano, DW Borst (2003) Hemolymph ecdysteroids do not affect vitellogenesis in the lubber grasshopper. Archives of Insect Biochemistry and Physiology 52:45-57. PDF

Hatle JD, BA Salazar and DW Whitman (2002) Survival advantage of sluggish individuals in aggregations of aposematic prey, during encounters with ambush predators. Evolutionary Ecology 16:415-431. PDF

Hatle JD, JH Spring and JAT Dow (2002) Ion and water transport in the orthopteran alimentary canal: a comparison of Mantidae and Acrididae. Journal of Orthoptera Research 10(2).

Hatle JD, MC Crowley, AL Andrews and SA Juliano (2002) Geographic variation of reproductive tactics in lubber grasshoppers. Oecologia 132:517-523. PDF

Luker LA, JD Hatle and SA Juliano (2002) Reproductive responses to photoperiod by south Florida population of the grasshopper, Romalea microptera (Orthoptera: Romaleidae). Environmental Entomology 31:702-707.

Hatle JD, DW Borst, ME Eskew and SA Juliano (2001) Maximum titers of vitellogenin and total hemolymph protein occur during the canalized phase of grasshopper egg production. Physiological and Biochemical Zoology 74:885-893. PDF

Hatle JD, BA Salazar and DW Whitman (2001) Sluggish movement and repugnant odor are positively interacting defensive traits in encounters with frogs. Journal of Insect Behavior 14:479-496. PDF

Hatle JD and DW Whitman (2001) Sluggish movement of conspicuous insects as a defense mechanism against motion-oriented predators. In: T. Ananthakrishan (Ed). Insect and Plant Defense Dynamics. Oxford & I.B.H. pp. 209-228.

Hatle JD and BA Salazar (2001) Aposematic coloration of gregarious insects can delay predation by an ambush predator. Environmental Entomology 30:51-54. PDF http://journals.entsoc.org/environ/v30n1/v30n1p51.pdf

Hatle JD, SA Juliano and DW Borst (2000) Juvenile hormone is a marker of the onset of canalized reproduction in lubber grasshoppers. Insect Biochemistry and Molecular Biology 30:821-827. PDF

Borst DW, MR Eskew, SJ Wagner, KM Shores, J Hunter, LA Luker, JD Hatle and LB Hecht (2000) Quantification of juvenile hormone III, vitellogenin, and vitellogenin-mRNA during the oviposition cycle of the lubber grasshopper. Insect Biochemistry and Molecular Biology 30:813-819. PDF

Hatle JD and JH Spring (1999) Tests of potential adipokinetic hormone precursor related peptide (APRP) functions: lack of responses. Archives of Insect Biochemistry and Physiology 42:163-166.

Hatle JD and SG Faragher (1998) Slow movement increases the survivorship of a chemically defended grasshopper in predatory encounters. Oecologia 115:260-267. PDF

Hatle JD and JH Spring (1998) Inter-individual variation in sequestration (as measured by energy dispersive spectroscopy) predicts efficacy of defensive secretion in lubber grasshoppers. Chemoecology 8:85-90.

Hatle JD and JH Spring (1998) AKHs in fifth instar Romalea guttata (Orthoptera: Acrididae): activation of glycogen phosphorylase does not produce hypertrehalosemia. Florida Entomologist 81:535-542.

Hatle JD and VR Townsend, Jr. (1996) Defensive secretion of a flightless grasshopper: failure to prevent lizard attack. Chemoecology 7:184-188.

FUNDING AND AWARDS

Travel award to New Investigator Forum of the National Institute on Aging–Biology of Aging Program. (2007) $948.

Testing direct effects of reproduction on stress and mortality via ovariectomy (2006) National Institute of Aging Academic Research Enhancement Award. $166,488. Priority score of 123.

Testing direct effects of reproduction on stress and mortality via ovariectomy (2006) Matching Award from UNF College of Arts and Sciences. $12,000.

Thresholds in animal development (2006) Seed Grant from UNF Environmental Center. $5000

Roles of Blood Sugar and Insulin in Aging: Developing a Grasshopper Model System (2005) University of North Florida Proposal Development Grant. $5000.

Development of Laboratories for Graduate Environmental Physiology (2005) University of North Florida Teaching Grant. $5000. (declined)

Symposium: Physiology underlying phenotypic plasticity and polyphenisms (2002) National Science Foundation Grant. $4715, Project director.

Faculty mentor appreciation award (2000) ISU Red Tassel Chapter of Mortar Board. One of 38 faculty (out of about 1170) selected for recognition by honors students.

Inter-individual variation in grasshopper defensive secretion: implications for defense and mate acquisition (1998) National Science Foundation Dissertation Improvement Grant. $5,003.

 

SELECTED PRESENTATIONS

Judd ET*, Drewry M, Wright K, Hatle JD (2009) Life-extending ovariectomy increases fat body mass, but perhaps not nutrient allocation to muscle, in grasshoppers. Annual meeting of American Aging Association, Scottsdale, AZ.

Judd ET, Drewry M*, Wright K, Hatle JD (2009) Adult nutrient allocation in ovariectomized versus reproducing grasshoppers through stable isotope analysis. Symposium on Biological Complexity: Processes of Aging, Salk Institute, San Diego, CA.

Hatle JD (2008) Ovariectomy and calorie restriction extend longevity in grasshoppers without altering protein allocation to storage and reproduction. University of Florida–Gainesville, Department of Zoology.

Helmey RP and Hatle JD (2007) Dietary restriction decreases reproductive output and life span in flesh flies. Annual meeting of Sigma Xi, Orlando, FL.

Lentz C, Jawaid I, Paterson CS, Wells SM, Fronstin RB, Hatle JD (2007) Extension of lifespan by ovariectomy in grasshoppers is not due to resource allocation. Annual meeting of Sigma Xi, Orlando, FL.

Hatle JD (2007) Ovariectomy and calorie restriction extend longevity in grasshoppers without altering protein allocation to reproduction and storage. UNF Natural Science Seminar series.

Fuller LE and Hatle JD (2007) Age and diet strongly affect total fat body protein in lubber grasshoppers. Osprey Journal of Inquiry and Ideas.

Hatle JD, Fronstin RB, JawaidI, Lentz C and Wells SM (2007) Ovariectomy extends lifespan in grasshoppers independent of calorie restriction. American Aging Association.

Hatle JD (2007) Ovariectomy extends lifespan in grasshoppers independent of calorie restriction. New Investigator Forum of the National Institute on Aging–Biology of Aging Program.

Fronstin RB and Hatle JD (2007) Juvenile hormone (JH) controls the timing of oviposition independent of the storage threshold in lubber grasshoppers. Society for Integrative and Comparative Biology.

Wright EM and Hatle JD (2007) Tests of diet and insulin-like peptides on the duration of the fifth instar of male lubber grasshoppers. Osprey Journal of Inquiry and Ideas.

Hatle JD (2006) The physiology underlying phenotypic plasticity of reproduction and longevity in grasshoppers. Invited presentation to the Department of Ecology and Evolutionary Biology at Brown University, Providence RI.

Hatle JD (2005) Developmental thresholds, and the physiology underlying phenotypic plasticity, in lubber grasshopper. Invited presentation to the Department of Entomology at the University of Florida, Gainesville.

PROFESSIONAL SOCIETIES

Society for Integrative and Comparative Biology, American Physiological Society, American Aging Association, Entomological Society of America