U.S. flagAn official website of the United States government
                    Here's how you know **Official websites use .gov**
                            
                            A **.gov** website belongs to an official government organization in the United States.
 **Secure .gov websites use HTTPS**
                            
                            A **lock** (                            
                              A locked padlock                                                      
                            
                            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Menu Agricultural Research Service
						
                    U.S. DEPARTMENT OF AGRICULTURE
 Invasive Plant Research Laboratory: Fort Lauderdale, FL
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                People

                    Staff Listing
                                    Careers


        


                    Outreach
                        Volunteer
                                    Outreach Activities 2019
                                    Outreach Activities 2020
                                    Outreach Activities 2022
                    K.I.N.D. GardenSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Southeast Area Fort Lauderdale, Florida Invasive Plant Research Laboratory People





- Find a person
- Find a location
- ARS Organizational Chart
- People

F Allen  Dray    Ecologist My career as a scientist began in 1979 when I received a B.S. in Marine Biology from the University of Tampa. During two years as an environmental consultant, I developed skills in diatom and annelid taxonomy, quantified the benthic polychaete components in Gray whale diets, and described the benthic macroinvertebrate communities of rivers, lakes, bays, and estuaries in Florida and New Jersey. I continued to focus on aquatic ecology at the University of Vermont, where I obtained an M.S. in Zoology in 1986. My research demonstrated that naididoligochaetes are common components of drifting invertebrate fauna in some streams, and that this may be a dispersal mechanism during periods of rapid population expansion through asexual budding. As a Senior Biologist at the University of Florida, I investigated the effects of genetic differences in its host plant on the population dynamics of the aquatic shore fly Hydrelliapakistanae, a biological control agent of the aquatic weed Hydrillaverticillata; I also studied the reproductive ecology of the floating weed Pistiastratiotes, surveyed the herbivore fauna on this weed in Florida, released the South American weevil Neohydronomusaffinis and the Asian moth Spodopterapectinicornis as biological controls against this weed, and evaluated the impacts of these insects on the population dynamics of Pistia. I completed the Ph.D. in Biology from FloridaInternationalUniversity in 2003. My research investigated the ecological genetics of the Everglades invader Melaleuca quinquenervia, and related variation among populations of this wetlands tree to differences in the population dynamics of the Australian weevil Oxyopsvitiosa - a biological agent introduced into Florida to control this weed.As an Ecologist with ARS, I have collaborated on the release and establishment of two biological controls (O. vitiosa and Boreioglycaspismelaleucae) of Melaleuca, investigated the efficacy of two Neochetina species (South American weevils) used as biological controls of the floating weed Eichhorniacrassipes, and used quantitative genetics methods to study the evolution of herbivore resistance in Melaleuca.   Publications(Clicking on the reprint iconReprint Icon  will take you to the publication reprint.)Introduction History of Rhodomyrtus tomentosa in southeastern USA-(Peer Reviewed Journal)Additional host range testing of eucryptorrhynchus brandti (Coleoptera: Curculionidae) for the biological control of tree-of-heaven, ailanthus altissima (Simaroubaceae) in the U.S.A.-(Peer Reviewed Journal) Mcavoy, T.J., Mays, R., Goldstein, S.L., Dray Jr, F.A., Yu, Z., Reardon, R., Salom, S.M. 2023. Additional host range testing of eucryptorrhynchus brandti (Coleoptera: Curculionidae) for the biological control of tree-of-heaven, ailanthus altissima (Simaroubaceae) in the U.S.A. Biocontrol Science and Technology. 1-26. https://doi.org/10.1080/09583157.2023.2294219.Assessing the status of biological control of air potato (Dioscorea bulbifera) in the southeastern USA-(Peer Reviewed Journal) Manrigue, V., Kraus, E., Schaffer, C., Diaz, R., Kelm, C., Poffenberger, R., Murray, R., Smith, M., Dray Jr, F.A., Leidi, J.G., Lake, E., Rayamajhi, M., Minteer, C., Mass, J.L., Hight, S.D. 2023. Assessing the status of biological control of air potato (Dioscorea bulbifera) in the southeastern USA. Biocontrol Science and Technology. (33)12:1173-1185. https://doi.org/10.1080/09583157.2023.2294207.Effects of invasive plant haplotypes on a biological control agent (Lepidelphax pistiae) fecundity and impact-(Peer Reviewed Journal) Goode, A.B., Tipping, P.W., Dray Jr, F.A., Valmonte, R.J., Knowles, B.K., Pokorny, E.N. 2023. Effects of invasive plant haplotypes on a biological control agent (Lepidelphax pistiae) fecundity and impact. Biocontrol Science and Technology. https://doi.org/10.1080/09583157.2023.2272229.Agricultural Research Service weed science research: past, present, and future-(Review Article) Young, S.L., Anderson, J.V., Baerson, S.R., Bajsa Hirschel, J.N., Blumenthal, D.M., Boyd, C.S., Boyette, C.D., Brennan, E.B., Cantrell, C.L., Chao, W.S., Chee Sanford, J.C., Clements, D.D., Dray Jr, F.A., Duke, S.O., Porter, K.M., Fletcher, R.S., Fulcher, M.R., Gaskin, J., Grewell, B.J., Hamerlynck, E.P., Hoagland, R.E., Horvath, D.P., Law, E.P., Madsen, J., Martin, D.E., Mattox, C.M., Mirsky, S.B., Molin, W.T., Moran, P.J., Mueller, R.C., Nandula, V.K., Newingham, B.A., Pan, Z., Porensky, L.M., Pratt, P.D., Price, A.J., Rector, B.G., Reddy, K.N., Sheley, R.L., Smith, L., Smith, M., Snyder, K.A., Tancos, M.A., West, N.M., Wheeler, G.S., Williams, M., Wolf, J.E., Wonkka, C.L., Wright, A.A., Xi, J., Ziska, L.H. 2023. Agricultural Research Service weed science research: past, present, and future. Weed Science. 71(4):312-327. https://doi.org/10.1017/wsc.2023.31.Classical Biological Control of Air Potato Vine, Dioscorea bulbifera, Infestations in Florida-(Book / Chapter) Rayamajhi, M.B., Dray Jr, F.A. 2022. Classical Biological Control of Air Potato Vine, Dioscorea bulbifera, Infestations in Florida. Book Chapter. 288-299.The phytogeography and genetic diversity of the weedy hydrophyte, Pistia stratiotes L.-(Peer Reviewed Journal) Madeira, P.T., Dray Jr, F.A., Tipping, P.W. 2022. The phytogeography and genetic diversity of the weedy hydrophyte, Pistia stratiotes L. Biological Invasions. 60(5):685–69. https://doi.org/10.1093/sysbio/syr041.Phenological synchrony between a weed (Dioscorea bulbifera) and a biocontrol agent (Lilioceris cheni) in the introduced range, Florida: implication in biological control-(Peer Reviewed Journal) Rayamajhi, M.B., Rohrig, E., Lake, E.C., Smith, M., Pratt, P.D., Dray Jr, F.A., Halbritter, D.A., Leidi, J.G. 2021. Phenological synchrony between a weed (Dioscorea bulbifera) and a biocontrol agent (Lilioceris cheni) in the introduced range, Florida: implication in biological control. Biocontrol Science and Technology. 31(8):797–816. https://doi.org/10.1080/09583157.2021.1885627.Weeding around the edges of the science of invasive plant management: biological control agent hybridization, apparent competition, and biotic resistance-(Abstract Only)Potential for negative interactions between successful arthropod and weed biological control programs: a case study with Lilioceris species-(Peer Reviewed Journal) Lake, E.C., Tewksbury, L., Smith, M., Dray Jr, F.A., Russell, A., Madeira, P.T., Rayamajhi, M.B., Casagrande, R. 2020. Potential for negative interactions between successful arthropod and weed biological control programs: a case study with Lilioceris species. Biological Control. 144. https://doi.org/10.1016/j.biocontrol.2020.104218.A novel method for quantifying insect damage to plant storage organs-(Peer Reviewed Journal) Dray Jr, F.A., Goldstein, S. 2019. A novel method for quantifying insect damage to plant storage organs. Entomologia Experimentalis et Applicata. 168(1):113-117. https://doi.org/10.1111/eea.12862.Molecular identification of Azolla in the Yangtze River Watershed, China-(Peer Reviewed Journal) Madeira, P.T., Dray Jr, F.A., Tipping, P.W. 2019. Molecular identification of Azolla in the Yangtze River Watershed, China. Aquatic Botany. 159. https://doi.org/10.1016/j.aquabot.2019.103149.Preparing for release of the Asian leaf beetle, Lilioceris egena, a biological control of air potato (Dioscorea bulbifera) in Florida-(Abstract Only)Herbivory by the biocontrol agent Lilioceris cheni suppresses propagule production and smothering ability of the invasive vine Dioscorea bulbifera-(Peer Reviewed Journal) Rayamajhi, M.B., Rohrig, E., Leidi, J.G., Kerr, C., Salcedo, E., Poffenberger, R., Smith, M., Lake, E.C., Dray Jr, F.A., Pratt, P.D., Tipping, P.W., Center, T.D. 2019. Herbivory by the biocontrol agent Lilioceris cheni suppresses propagule production and smothering ability of the invasive vine Dioscorea bulbifera. Biological Control. 130:1-8. https://doi.org/10.1016/j.biocontrol.2018.12.001.Plant phylogenetics inform efforts at biological control of Dioscorea bulbifera-(Abstract Only)Will biological control agents of Lilioceris lilii, lily leaf beetle, parasitize congeneric weed biological control agents for air potato?-(Abstract Only)Minimum threshold for establishment and dispersal of Lilioceris cheni (Coleoptera: Chrysomelide): a biological control agent of Dioscorea bulbifera-(Peer Reviewed Journal) Lake, E.C., Smith, M., Rayamajhi, M.B., Pratt, P.D., Dray Jr, F.A. 2018. Minimum threshold for establishment and dispersal of Lilioceris cheni (Coleoptera: Chrysomelide): a biological control agent of Dioscorea bulbifera. Biocontrol Science and Technology. 28(6):603-613. https://doi.org/10.1080/09583157.2018.1468999.Hybridization of two biotypes of Lilioceris cheni will not hinder biological control of air potato, Dioscorea bulbifera-(Abstract Only)The role of melaleuca control in Everglades restoration: accomplishments and future plans-(Book / Chapter) Lake, E.C., Tipping, P.W., Rayamajhi, M.B., Pratt, P.D., Dray  Jr, F.A., Wheeler, G.S., Purcell, M.F., Center, T.D. 2017. The role of melaleuca control in Everglades restoration: accomplishments and future plans. In: Van Driesche, R.G, Reardon, R.C., editors. Supressing over-abundant invasive plants and insects in natural areas by use of their specialized natural enemies. Morgantown, WV: Forest Health Technology Enterprise Team. p. 53-58.The role of melaleuca control in Everglades restoration: accomplishments and future plans-(Book / Chapter) Lake, E.C., Tipping, P.W., Rayamajhi, M.B., Pratt, P.D., Dray Jr, F.A., Wheeler, G.S., Purcell, M.F., Center, T.D. 2017. The role of melaleuca control in Everglades restoration: accomplishments and future plans. Forest Health Technology Enterprise Team. 53-58.Fidelity of the Asian beetle Lilioceris egena (Weise) to air potato (Dioscorea bulbifera L.)-(Other)Does Lilioceris egena burrow for tubers-(Abstract Only)Release and distribution of Lilioceris cheni (Coleoptera: Chrysomelidae), a biological control agent of air potato (Dioscorea bulbilfera: Dioscoreaceae), in Florida-(Peer Reviewed Journal) Overholt, W.A., Rayamajhi, M.B., Rohrig, E., Hight, S.D., Dray  Jr, F.A., Lake, E.C., Smith, M., Hibbard, K., Bhattarai, G., Bowers, K.E., Poffenberger, R., Clark, M., Curry, B., Stange, B., Calise, E., Wasylik, T.K., Martinez, C.M., Leidi, J.G. 2016. Release and distribution of Lilioceris cheni (Coleoptera: Chrysomelidae), a biological control agent of air potato (Dioscorea bulbilfera: Dioscoreaceae), in Florida. Biocontrol Science and Technology. 26:1087-1099.Molecular identification of Azolla invasions in Africa: The Azolla specialist, Stenopelmus rufinasus proves to be an excellent taxonomist-(Peer Reviewed Journal) Madeira, P.T., Hill, M.P., Dray  Jr, F.A., Coetzee, J.A., Paterson, I.D., Tipping, P.W. 2016. Molecular identification of Azolla invasions in Africa: The Azolla specialist, Stenopelmus rufinasus proves to be an excellent taxonomist. South African Journal of Botany. 105:299-305.The role of melaleuca control in Everglades restoration: accomplishments and future plans-(Abstract Only)Ecological host-range of Lilioceris cheni (Coleoptera: Chrysomelidae), a biological control agent of Dioscorea bulbifera L.-(Peer Reviewed Journal) Lake, E.C., Smith, M., Dray  Jr, F.A., Pratt, P.D. 2015. Ecological host-range of Lilioceris cheni (Coleoptera: Chrysomelidae), a biological control agent of Dioscorea bulbifera L.. Biological Control. 85:18-24.In the Eye of the Beholder: Waterhyacinth Management in Florida-(Peer Reviewed Journal) Tipping, P.W., Martin, M.R., Pokorny, E.N., Nimmo, K.R., Fitzgerald, D.L., Dray  Jr, F.A. 2014. In the Eye of the Beholder: Waterhyacinth Management in Florida. Biocontrol News and Information. 35,12.Current levels of suppression of waterhyacinth in Florida by classical biological control agents-(Peer Reviewed Journal) Tipping, P.W., Martin, M.R., Pokorny, E.N., Nimmo, K.R., Fitzgerald, D.L., Dray  Jr, F.A. 2014. Current levels of suppression of waterhyacinth in Florida by classical biological control agents. Biological Control. 71:65-69.Bottom-up effects on top-down regulation of a floating aquatic plant by two weevil species:	the context-specific nature of biological control-(Peer Reviewed Journal) Center, T.D., Dray Jr, F.A., Mattison, E.D., Tipping, P.W., Rayamajhi, M.B.  Bottom-up effects on top-down regulation of a floating aquatic plant by two weevil species:	the context-specific nature of biological control. Journal of Applied Ecology.51(3):814-824. 2014.Host range validation, molecular identification, and release and establishment of a Chinese biotype of the Asian leaf beetle Lilioceris cheni (Coleoptera:Chrysomelidae:Criocerinae) for control of Dioscorea bulbifera L. in ...-(Peer Reviewed Journal) Center, T.D., Rayamajhi, M., Dray, F.A., Madeira, P.M., Witkus, G., Rohrig, E., Mattison, E., Lake, E., Smith, M., Zhang, J., Purcell, M., Konstantinov, A., Schmitz, D. Host range validation, molecular identification, and release and establishment of a Chinese biotype of the Asian leaf beetle Lilioceris cheni (Coleoptera:Chrysomelidae:Criocerinae) for control of Dioscorea bulbifera L. in the southern United States. Biocontrol Science and Technology. 23(7):735-755. 2013.Evidence of establishment of Bagous hydrillae Coleoptera: Curculionidae), a biological control agent of Hydrilla verticillata (Hydrocharitales: Hydirocharitaceae) in North America?-(Peer Reviewed Journal) Center, T.D., Parys, K., Grodowitz, M., Wheeler, G.S., Dray  Jr, F.A., O'Brien, C.W., Johnson, S., Cofrancesco, A. 2013. Evidence of establishment of Bagous hydrillae Coleoptera: Curculionidae), a biological control agent of Hydrilla verticillata (Hydrocharitales: Hydirocharitaceae) in North America?. Florida Entomologist. 96(1):180-186.In situ estimates of waterhyacinth leaf tissue nitrogen using a SPAD-502 chlorophyll meter-(Peer Reviewed Journal) Dray  Jr, F.A., Center, T.D., Mattison, E. 2012. In situ estimates of waterhyacinth leaf tissue nitrogen using a SPAD-502 chlorophyll meter.  Aquatic Botany. DOI: 10.1016/j.aquabot.2012.03.005.Biological control of Melaleuca quinquenervia: an Everglades invader-(Peer Reviewed Journal) Center, T.D., Purcell, M.F., Pratt, P.D., Rayamajhi, M.B., Tipping, P.W., Wright, S.A., Dray Jr, F.A. Biological control of Melaleuca quinquenervia: an Everglades invader. Biocontrol. 57(2):151-165.2012.Host specificity assessment and potential impact of Megamelus scutellaris Berg (Hemiptera: Delphacidae) on waterhyacinth (Eichhornia crassipes Mart. Pontederiales: Pontederiaceae)-(Peer Reviewed Journal) Tipping, P.W., Center, T.D., Sosa, A.J., Dray  Jr, F.A. 2010. Host specificity assessment and potential impact of Megamelus scutellaris Berg (Hemiptera: Delphacidae) on waterhyacinth (Eichhornia crassipes Mart. (Solms) (Pontederiales: Pontederiaceae). Biocontrol Science and Technology. 21(1):75-87.A Simple, Efficient Method for Extracting Neochetina eichhorniae and N. bruchi (Coleoptera: Curculionidae) from Waterhyacinth (Eichhornia crassipes: Pontederiaceae)-(Peer Reviewed Journal) Center, T.D., Dray  Jr, F.A. 2010. A Simple, Efficient Method for Extracting Neochetina eichhorniae and N. bruchi (Coleoptera: Curculionidae) from Waterhyacinth (Eichhornia crassipes: Pontederiaceae). Florida Entomologist. 93(2): 315-316.Bottom-up control of water hyacinth weevil populations: Do the plants regulate the insects?-(Peer Reviewed Journal) Center, T.D., Dray  Jr, F.A. 2010. Bottom-up control of water hyacinth weevil populations: Do the plants regulate the insects?. Journal of Applied Ecology. 47, 329-337.Effects of host quality on flight muscle development in Neochetina eichhornia and N bruchi (Coleoptera: Curculionidae)-(Peer Reviewed Journal) Center, T.D., Dray  Jr, F.A. 2010. Effects of host quality on flight muscle development in Neochetina eichhornia and N bruchi (Coleoptera: Curculionidae). Florida Entomologist. 93(2): 161-166.Geographic distribution and regional impacts of Oxyops vitiosa (Coleoptera: Curculionidae) and Boreioglycaspis melaleucae (Hemiptera: Psyllidae), biological control agents of the invasive tree Melaleuca quinquenervia-(Peer Reviewed Journal) Balentine, K.M., Pratt, P.D., Dray  Jr, F.A., Rayamajhi, M.B., Center, T.D.  Geographic distribution and regional impacts of Oxyops vitiosa (Coleoptera: Curculionidae) and Boreioglycaspis melaleucae (Hemiptera: Psyllidae), biological control agents of the invasive tree Melaleuca quinquenervia. Environmental Entomology. 38(4):1145-1154. 2009.Concordance between life history traits, invasion history, and allozyme diversity of the Everglades invader Melaleuca quinquenervia-(Peer Reviewed Journal) Dray  Jr, F.A., Hale, R.E., Madeira, P.T., Bennett, B.C., Center, T.D. 2008. Concordance between life history traits, invasion history, and allozyme diversity of the Everglades invader Melaleuca quinquenervia. Aquatic Botany. 90(4):296-302. 2009.Selection on herbivory resistance and growth rate in an invasive plant-(Peer Reviewed Journal) Franks, S.J., Pratt, P.D., Dray  Jr, F.A., Simms, E.L. 2008. Selection on herbivory resistance and competitive ability traits in an invasive plant. The American Naturalist, Vol. 171, No. 5, pp. 678-691.No evolution of increased competitive ability or decreased allocation to defense in Melaleuca quinquenervia since release from natural enemies-(Peer Reviewed Journal) Franks, S.J., Pratt, P.D., Dray  Jr, F.A., Simms, E.L. 2008. No evolution of increased competitive ability or decreased allocation to defense in Melaleuca quinquenervia since release from natural enemies. Biological Invasions. 10(4):455-466.No evolution of increased competitive ability or decreased allocation to defense in Melaleuca quinquenervia since release from natural enemies-(Peer Reviewed Journal) Franks, S.J., Pratt, P.D., Dray  Jr, F.A., Simms, E.L. 2007. No evolution of increased competitive ability or decreased allocation to defense in Melaleuca quinquenervia since release from natural enemies. Biological Invasions. 10:455-466.NO EVOLUTION OF INCREASED COMPETITIVE ABILITY OR DECREASED ALLOCATION TO DEFENSE IN MELALEUCA QUINQUENERVIA SINCE RELEASE FROM NATURAL ENEMIES.-(Peer Reviewed Journal) Franks, S.D., Pratt, P.D., Dray  Jr, F.A., Simms, E. 2008. No evolution of increased competitive ability or decreased allocation to defense in melaleuca quinquenervia since release from natural enemies.. Biological Invasions 10(4): 455-466. (published online: Aug 2007)Initial impacts and field validation of host range for Boreioglycaspis melaleucae Moore (Hemiptera: Psyllidae),a biological control agent of the invasive tree Melaleuca quinquenervia (Cav.) Blake (Myrtales: Myrtaceae: Leptosp-(Peer Reviewed Journal) Center, T.D., Pratt, P.D., Tipping, P.W., Rayamajhi, M.B., Van, T.K., Dray Jr., F.A., Wright, S.A. Initial impacts and field validation of host range for Boreioglycaspis melaleucae Moore (Hemiptera: Psyllidae),a biological control agent of the invasive tree Melaleuca quinquenervia (Cav.) Blake (Myrtales: Myrtaceae: Leptospermoideae. Environmental Entomology. 36(3):569-576. 2007.Field colonization, population growth, and dispersal of Boreioglycaspis melaleucae Moore, a biological control agent of the invasive tree Melaleuca quinquenervia (Cav.) Blake-(Peer Reviewed Journal) Center, T.D., Pratt, P.D., Tipping, P.W., Rayamajhi, M.B., Van, T.K., Wineriter, S.A., Dray  Jr., F.A., Purcell, M. Field colonization, population growth, and dispersal of Boreioglycaspis melaleucae Moore, a biological control agent of the invasive tree Melaleuca quinquenervia (Cav.) Blake. Biological Control. 39:363-374. 2006.INVASION HISTORY OF MELALEUCA QUINQUENERVIA (CAV.) S.T. BLAKE IN FLORIDA-(Peer Reviewed Journal) Dray  Jr, F.A., Bennett, B.C., Center, T.D. 2006. Invasion history of melaleuca quinquenervia (cav.) S.T. Blake in Florida. Castanea. 71(3): 210-225.Herbivory alters competitive interactions between two invasive aguatic plants-(Peer Reviewed Journal) Center, T.D., Van, T.K., Dray  Jr., F.A., Franks, S.J., Rebelo, M.T., Pratt, P.D., Rayamajhi, M.B. Herbivory alters competitive interactions between two invasive aguatic plants. Biological Control. 33:173-185. 2005.GENETIC VARIATION IN MELALEUCA QUINQUENERVIA AFFECTS THE BIOCONTROL AGENT OXYOPS VITIOSA-(Peer Reviewed Journal) Dray  Jr, F.A., Bennett, B.C., Center, T.D., Wheeler, G.S., Madeira, P.T. 2004. Genetic variation in melaleuca quinquenervia affects the biocontrol agent Oxyops vitiosa. Weed Technology. 18: 1400-1402.GENETIC VARIATION IN MELALEUCA QUINQUENERVIA AFFECTS THE BIOCONTROL AGENT OXYOPS VITIOSA-(Peer Reviewed Journal) Dray  Jr, F.A., Bennett, B.C., Center, T.D., Wheeler, G.S., Madeira, P.T. 2004. GENETIC VARIATION IN MELALEUCA QUINQUENERVIA AFFECTS THE BIOCONTROL AGENT OXYOPS VITIOSA. Weed Technology. 18:1400-1402. 2004.SELECTION FOR RESISTANCE IN INVASIVE PLANTS-(Peer Reviewed Journal) Franks, S.J., Pratt, P.D., Dray  Jr, F.A., Simms, E.L. 2004. Selection for resistance in invasive plants. Weed Technology.GOING WILD FROM DOWN UNDER: MELALEUCA QUINQUENERVIA INVADES THE EVERGLADES-(Proceedings) Dray  Jr, F.A., Bennett, B.C., Center, T.D. 2004. Going wild from down under: melaleuca quinquenervia invades the everglades. Meeting Abstract.NATURAL ENEMY ESCAPE AND THE EVOLUTION OF HERBIVORY RESISTANCE IN THE INVASIVE PLANT MELALEUCA QUINQUENERVIA-(Proceedings) Franks, S.J., Pratt, P.D., Dray  Jr, F.A., Simms, E.L. 2004. Natural enemy escape and the evolution of herbivory resistance in the invasive plant melaleuca quinquenervia. Gordon Research Conference Proceedings.THE ROLE OF BIOCONTROL IN INTEGRATED WEED MANAGEMENT-(Proceedings) Center, T.D., Van, T.K., Pratt, P.D., Tipping, P.W., Rayamajhi, M.B., Franks, S.J., Dray  Jr, F.A. The role of biocontrol in integrated weed management. Meeting Abstract.VARIATION AMONG MELALEUCA QUINQUENERVIA (MYRTACEAE) POPULATIONS IN FLORIDA AND ITS INFLUENCE ON PERFORMANCE OF THE BIOLOGICAL CONTROL AGENT OXYOPS VITIOSA (COLEOPTERA: CURCULIONIDAE)-(Proceedings) Dray  Jr, F.A. 2003. Variation among melaleuca quinquenervia (myrtaceae) populations in florida and its influence on performance of the biological control agent oxyops vitiosa (coleoptera: curculionidae). Joint Conference on the Science and Restoration of the Greater Everglades and Florida Bay Ecosystem.BIOLOGICAL CONTROL OF INVASIVE PLANTS IN EVERGLADES ECOSYSTEMS-(Proceedings) Center, T.D., Dray  Jr, F.A. 2003. Biological control of invasive plants in everglades ecosystems. Joint Conference on the Science and Restoration of the Greater Everglades and Florida Bay Ecosystem.DOES HERBIVORY SELECT FOR RESISTANT GENOTYPES OF THE INVASIVE TREE MELALEUCA QUINQUENERVIA?-(Proceedings) Franks, S.J., Pratt, P.D., Dray  Jr, F.A., Simms, E.L. 2003. Does herbivory select for resistant genotypes of the invasive tree melaleuca quinquenervia?. The 7th International Conference on the Ecology and Management of Alien Plant Invasions.COMPETITION EXPERIMENTS FOR PRE-RELEASE EVALUATION OF THE POTENTIAL EFFICACY OF NEW BIOLOGICAL CONTROL AGENTS-(Proceedings) Center, T.D., Van, T.K., Rebelo, T., Dray  Jr, F.A., Pratt, P.D., and Rayamajhi, M.B. 2004. Competition experiments for pre-release evaluation of the potential efficacy of new biological control agents. In: Proceedings of the XI International Symposium on Biological Control of Weeds (eds. J. M. Cullen, D. T. Briese, D. J. Kriticos, W. M. Lansdale, L. Marin, and J. K. Scott), pp. 222-223. CSIRO Entomolgy, Canberra, Australia. Meeting Abstract.WATERLETTUCE-(Book / Chapter) Dray  Jr, F.A. 2004. WATERLETTUCE. Biological Control of Invasive Plants in the United States. 65-78 (Book Chapter) 2004.  ProjectsCERP BIOLOGICAL CONTROL IMPLEMENTATION PROJECTReimbursable Cooperative Agreement (R)Accession Number:439463Establishment and Evaluation of Lilioceris Egena for Air Potato BiocontrolReimbursable Cooperative Agreement (R)Accession Number:444760Population Genetics of Waterlettuce (Pistia Stratiotes) in Florida: Parsing Native from Invasive GenotypesReimbursable Cooperative Agreement (R)Accession Number:446066Biological Control of Weeds Endemic to Southeast Asia and Australia that are Invasive in the United StatesNon-Assistance Cooperative Agreement (S)Accession Number:441663  ARS News ArticlesNo news articles listed for this employee.


Return to top


Connect with ARS Sign up


ARS Home
                            USDA.gov
                            Plain Writing
                            Policies & Links
                            Civil Rights Statements
                            FOIA
                            Accessibility Statement
                            Privacy Policy
                            Non-Discrimination Statement
                            Quality of Information
                            USA.gov
                            WhiteHouse.gov