Jesus Humberto De Leon
Beneficial Insects Research
Research Molecular Biologist
Phone: (956) 969-4856
Fax: (956) 969-4888
2413 E HIGHWAY 83
WESLACO, TX, 78596
Triapitsyn, S.V., Logarzo, G.A., De Leon, J.H., Virla, E.G. 2008. A new Gonatocerus (Hymenoptera: Mymaridae) from Argentina, with taxonomic notes and molecular data on the G. tuberculifemur species complex. Zootaxa. 1949:1-29.
De Leon, J.H., Logarzo, G.A., Triapitsyn, S.V. 2007. Progress on resolving the Gonatocerus tuberculifemur complex: neither COI nor ITS2 sequence data alone can discriminate all the species within the complex, whereas, ISSR-PCR DNA fingerprinting can. Proc. CDFA Pierce's Disease Research Symposium. pp. 73-76.
De Leon, J.H., Morgan, D.J. 2007. Evaluation of molecular markers for discriminating Gonaterocerus morrilli: A biological control agent imported from the origin of the glassy-winged sharpshooter. Proc. CDFA Pierce's Disease Research Symposium. pp. 81-85.
Triapitsyn, S.V., Logarzo, G., Virla, E.G., De Leon, J.H. 2007. A new species of Gonatocerus (Hymenoptera: Mymaridae) from Argentina, an egg parasitoid of Tapajosa rubromarginata (Hemiptera: Cleadellidae). Zootaxa. 1619:61-68.
De Leon, J.H., Morgan, D. 2007. Evaluation of molecular markers for discriminating Gonatocerus morrilli (Hymenoptera: Mymaridae): A biological control agent for Homalodisca vitripennis. Annals of the Entomological Society of America. 100(5):749-757.
De Leon, J.H., Logarzo, G., Triapitsyn, S.V. 2008. Molecular characterization of Gonatocerus tuberculifemur (Ogloblin) (Hymenoptera: Mymaridae), a prospective Homalodisca vitripennis (Germar) (Hemiptera: Cicadellidae) biological control candidate agent from South America: Divergent clades. Bulletin of Entomological Research. 98:97-108.
Fournier, V., Hagler, J.R., Daane, K., De Leon, J.H. 2006. Identifying key predators of the glassy-winged sharpshooter in a citrus orchard. CDFA Pierce's Disease Control Program Research Symposium, Nov 27-29, 2006, San Diego, CA, pp. 64-66.
De Leon, J.H., Morgan, D.J. 2006. Development and utility of a `one-step¿ species-specific molecular diagnostic marker for gonatocerus morrilli designed toward the internal transcribed spacer region 2 (its2) to monitor establishment in california. CDFA Pierce's Disease Control Program Research Symposium.
De Leon, J.H., Logarzo, G.A., Triapitsyn, S.V. 2006. Genetic characterization of Gonatocerus tuberculifemur from South America uncovers divergent clades: prospective egg parasitoid candidate agent for the glassy-winged sharpshooter in California. CDFA Pierce's Disease Control Program Research Symposium, November 27-29, 2006, San Diego, California. p. 40.
De Leon, J.H., Logarzo, G.A., Triapitsyn, S.V. 2006. Preliminary evidence from reproductive compatibility studies suggests that Gonatocerus tuberculifemur exists as a cryptic species complex or a new species is identified:Development and utility of molecular diagnostic markers. CDFA Pierce's Disease Control Program Research Symposium, November 27-29, 2006, San Diego, California. p 44.
De Leon, J.H., Logarzo, G., Triapitsyn, S.V. 2006. The utility of the internal transcribed spacer region 2 (ITS2) in confirming species boundaries in the genus Gonatocerus:comparison to the cytochrome oxidase subunit I(COI) gene and taxonomic data: molecular key based on ITS2. CDFA Pierce's Disease Control Program Research Symposium, November 27-29, 2006, San Diego, California. p.56.
De Leon, J.H., Logarzo, G.A., Triapitsyn, S.V. 2006. Genetic studies of Gonatocerus metanotalis populations from Argentina uncover divergent clades: A prospective egg parasitoid candidate agent for the glassy-winged sharpshooter in California. CDFA Pierce's Disease Control Program Research Symposium, November 27-29, 2006, San Diego, California. p. 52.
De Leon, J.H., Logarzo, G.A., Triapitsyn, S.V. 2006. ISSR-PCR DNA fingerprinting uncovers distinct banding patterns in Gonatocerus species 3(g.sp.3) individuals emerging from different host tribes: A prospective egg parasitoid candidate agent for the glassy-winged sharpshooter. CDFA Pierce's Disease Control Program Research Symposium, November 27-29, 2006, San Diego, California. p. 48.
De Leon, J.H., Jones, W.A., Setamou, M., Morgan, D.J. 2006. Genetic and hybridization evidence confirms that a geographic population of Gonatocerus morrilli (Hymenoptera: Mymaridae) from California is a new species: egg parasitoids of the glassy-winged sharpshooter Homalodisca coagulata (Homoptera: Cicadellidae). Biological Control. 38:282-293.
Fournier, V., Hagler, J.R., Daane, K.M., Groves, R.L., De Leon, J.H., Costa, H.S., Henneberry, T.J. 2006. Development and application of a glassy-winged and smoke-tree sharpshooter egg-specific predator gut content elisa. Biological Control. Biological Control 37: 108-118.
De Leon, J.H., Fournier, V., Hagler, J.R., Daane, K. 2006. Development of molecular diagnostic markers for sharpshooters Homalodisca coagulata and H. liturata (Homoptera: Cicadellidae: Proconiini) for use in predator gut content examinations. Entomologia Experimentalis et Applicata. 119:109-119.
Fournier, V., Hagler, J.R., Daane, K., De Leon, J.H., Prabhaker, N., Costa, H. 2006. Identifying key predators of the various glassy-winged sharpshooter liestages. CDFA Pierce's Disease Control Program Research Symposium 314-317.
De Leon, J.H., Jones, W.A., Setamou, M., Morgan, D.J. 2005. Discovery of a cryptic species complex in Gonatocerus morrilli (Hymenoptera: Mymaridae), a primary egg parasitoid of the glassy-winged sharpshooter. Proceedings of CDFA Pierce's Disease Control Program Research Symposium, December 5-7, 2005, San Diego, California. p. 302-305.
De Leon, J.H., Morgan, D. 2005. Small scale post-release evaluation of a Gonatocerus morrilli program in California against the glassy-winged sharpshooter: Utility of developed molecular diagnostic tools. Proceedings of CDFA Pierce's Disease Control Program Research Symposium, December 5-7, 2005, San Diego, California. p. 306-309.
De Leon, J.H., Fournier, V., Hagler, J.R., Daane, K. 2005. Development of molecular diagnostic markers for glassy-winged and smoke-tree sharpshooters for use in predator gut content examinations. Proceedings of CDFA Pierce's Disease Control Program Research Symposium, December 5-7, 2005, San Diego, CA. p.293-297.
De Leon, J.H., Hagler, J.R., Logarzo, G., Morgan, D.J. 2005. The utility of inter-simple sequence repeat-polymerase chain reaction (ISSR-PCR) to distinguish geographic populations of the smoke-tree sharpshooter Homalodisca liturata and egg parasitoid species of the genus Gonatocerus. Proceedings of CDFA Pierce's Disease Control Program Research Symposium, December 5-7, 2005, San Diego, California. p. 298-301.
De Leon, J.H., Hagler, J.R., Fournier, V., Daane, K., Jones, W.A. 2004. Development of molecular diagnostic markers for homalodisca sharpshooters present in california to aid in the identification of key predators. CDFA Pierce's Disease Control Program Research Symposium. pp. 326-329
Fournier, V., Hagler, J.R., Daane, K., De Leon, J.H., Groves, R.L., Prabhaker, N., Costa, H. 2004. Identifying key predators of the various glassy-winged sharpshooter life stages. CDFA Pierce's Disease Control Program Research Symposium, 7-10 December 2004, San Diego, CA, pp. 97-99
De Leon, J.H., Jones W.A., Morgan, D.J.W., Mizell III, R.F. 2004. Genetic differentiation among geographic populations of Gonatocerus ashmeadi: A primary egg parasitoid of the glassy-winged sharpshooter. In: Proceedings CDFA Pierce's Disease Control Program Research Symposium, December 7-10, 2004, San Diego, California. p. 314-317.
De Leon, J.H., Jones, W.A., Morgan, D.J.W., Mizell, R.J. 2004. Extensive sequence divergence in the ITS2 RDNA fragment in a population of Gonatocerus ashmeadi from Florida: Phylogenetic relationships of Gonatocerus species. In: Proceedings of the CDFA Pierce's Disease Control Program Research Symposium, December 7-10, 2004, San Diego, California. p. 309-312.
De Leon, J.H., Jones, W.A., Morgan, D.J.W. 2004. Molecular distinction between populations of Gonatocerus morrilli, egg parasitoids of the glassy-winged sharpshooter, from Texas and California: Do cryptic species exist? In: Proceedings of the CDFA Pierce's Disease Control Program Research Symposium, December 7-10, 2004, San Diego, California. p. 318-321.
De Leon, J.H., Jones, W.A., Morgan, D.J.W., Mizell, R.F., III. 2004. Sequence divergence in two mitochondrial genes (COI and COII) and in the ITS2 RDNA fragment in geographic populations of Gonatocerus morrilli, a primary egg parasitoid of the glassy-winged sharpshooter. In: Proceedings CDFA Pierce's Disease Control Program Research Symposium, December 7-10, 2004, San Diego, California. p. 322-325.
De Leon, J.H., Fournier, V., Hagler J., Daane K., Jones, W.A. 2004. Development of molecular diagnostic markers for Homalodisca sharpshooters present in California to aid in the identification of key predators. In: Proceedings CDFA Pierce's Disease Control Program Research Symposium, December 7-10, 2004, San Diego, California. p. 326-329.
De Leon, J.H., Jones, W.A. 2005. Genetic differentiation among geographic populations of Gonatocerus ashmeadi (Hymenoptera: Mymaridae), the predominant egg parasitoid of Homalodisca coagulata (Homoptera: Cicadellidae). Journal of Insect Science. 5:1-9.
De Leon, J.H., Jones, W.A., Morgan, D.J. 2004. Molecular distinction between populations of Gonatocerus morrilli, egg parasitoids of the glassy-winged sharpshooter Homalodisca coagulata, from Texas and California, Do cryptic species exist? Journal of Insect Science. 4:7.
De Leon, J.H., Jones, W.A., Morgan, D.J. 2004. Population genetic structure of Homalodisca coagulata (Homoptera: Cicadellidae) the vector of the bacterium Xylella fastidiosa causing Pierce's disease in grapevines. Annals of the Entomological Society of America. 97(4):1-10.
De Leon, J.H. 2004. DNA polymorphisms detected in a population of glassy-winged sharpshooters (Homalodisca coagulata) from Weslaco, Texas by PCR-based DNA fingerprinting methods [abstract]. Journal of Insect Science. 2:17.
De Leon, J.H., Jones, W.A. 2004. Detection of DNA Polymorphisms in Homalodisca coagulata (Homoptera: Cicadellidae) by Polymerase Chain Reaction-Based DNA Fingerprinting Methods. Annuals of the Entomological Society of America. 97(3):574-585.
De Leon, J.H., Jones, W.A., Morgan, D.J. 2003. Detection of DNA polymorphisms in glassy-winged sharpshooters (Homalodisca coagulata) by PCR-based DNA fingerprinting methods [abstract]. In: Proceedings of the CDFA Pierce's Disease Control Program Research Symposium. Dec. 15-18, 2002, San Diego, CA. p. 171-172.
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