Entomology: S. Patricia Stock

Associate Professor

1992: Ph.D. Natural Sciences (Parasitology), National University of La Plata, Argentina.
1985: BS, Zoology, University of La Plata, Argentina.

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Research Interests: Biodiversity, ecology,and evolution of entomopathogenic nematode. Nematode-bacteria symbiosis. Multitrophic interactions. Entomopathogens and biological control

My current research interests are: nematode systematics (relationships between morphological and molecular evolution). Current phylogenetic studies of nematodes involve the use of nucleotide sequence data (nuclear and mitochondrial genes) and morphological traits to infer relationships for insect-parasitic, entomopathogenic and free-living nematodes. Another area of interest is the biodiversity of nematodes and their role in ecosystem function. I am actively engaged in survey and inventory projects in different geographic regions of the world, which allow me to make significant contributions toward biological conservation and restoration efforts. These projects require continued research into improving molecular techniques by which nematode species are recovered. Additionally, I'm interested in studying the ecology and genetics of nematode populations from agricultural and natural ecosystems. Host-parasite relationships and interactions (including plant and insect-parasitic nematodes), such as phoresis, facultative, obligate parasitism, and pathogenesis. I also have an active research program on insect pathology and the use of entomopathogenic nematodes as biological control agents. The overall objectives of this program are to develop entomopathogens as effective biocontrol agents against major agricultural pests, and to develop a basic understanding of the ecology and behavior of insect parasitic nematodes.

Teaching Responsibilities:

Spring 2008: ENTO 446/546 - Insect Pathogens: Biocontrol Agents and Biological Models
Fall 2008: ENTO 310 - Living in Symbiosis

Selected Publications:

Gassmann A, Stock SP, Sisterson MS, Carrière Y, Tabashnik B. 2008. Synergism between entomopathogenic nematodes and Bt crops: integrating control and resistance management. Journal of Applied Ecology In Press.

Lopez-Nuñez JC, Plichta K., Gongora-Botero CE, Stock SP. 2008. A new entomopathogenic nematode, Steinernema colombiense n. sp. (Nematoda: Steinernematidae) from Colombia. Nematology In Press.

Stock SP Goodrich-Blair H. 2008. Nematode-Bacterium Symbioses: Crossing Kingdom and Disciplinary Boundaries. Symbiosis In Press.

Stock SP Goodrich-Blair H. 2008. Entomopathogenic nematodes and their bacterial symbionts: the inside out of a mutualistic association. Symbiosis In Press.

Stock SP, Al. Banna L, Darwish R, Katbeh A. 2008. Diversity and distribution of entomopathogenic nematodes (Nematoda: Steinernematidae, Heterorhabditidae) and their bacterial symbionts (c-Proteobacteria: Enterobacteriaceae) in Jordan. Journal of Invertebrate Pathology In Press.

Emelianoff V, Le Brun N, Pagès, Stock SP, Tailliez P, Moulia C, Sicard M. 2008. Isolation and identification of entomopathogenic nematodes and their symbiotic bacteria from Hérault and Gard (Southern France). Journal of Invertebrate Pathology In Press.

Snyder H, Stock SP, Flores-Lara Y, Kim SK, Forst S. 2007. New insights into the colonization and release process of Xenorhabdus nematophila and the morphology and ultrastructure of the bacterial receptacle of its nematode host, Steinernema carpocapsae. Applied Environmental Microbiology 73: 5338-5346 .

Uribe-Lorio L, Mora M, and Stock SP. 2007. Steinernema costaricense n. sp. and Steinernema puntauvense n.sp. (Rhabditida, Steinernematidae), two new entomopathogenic nematodes from Costa Rica. Systematic Parasitology 68: 167-172.

Simard L, Belair G, Stock SP, Mauleon H, Dionne J. 2007. Natural occurrence of entomopathogenic (Rhabditidae, Steinernematidae) on golf courses in eastern Canada. Nematology 9: 325-332.

Lopez-Nuñez JC, Cano L, Gongora-Botero CE, Stock SP. 2007. Diversity and evolutionary relationships of entomopathogenic nematodes (Steinernematidae and Heterorhabditidae) from the central Andean region of Colombia. Nematology 9: 333-341.

Flores-Lara Y, Renneckar D, Forst S, Goodrich-Blair H, Stock SP. 2007. Influence of nematode age and culture conditions on morphological and physiological parameters in the bacterial receptacle of Steinernema carpocapsae (Nematoda, Steinernematidae). Journal of Invertebrate Pathology 95: 110-118.

Stock SP, Gress JC. 2006. Diversity and phylogenetic relationships of entomopathogenic nematodes (Steinernematidae and Heterorhabditidae) from the Sky Islands of southern Arizona. Journal of Invertebrate Pathology 92 (2): 66-72.

Adams BJ, Fodor A, Koppenhofer HS, Stackebrandt E, Stock SP, Klein MG. 2006. Biodiversity and systematics of nematode-bacterium entomopathogens (vol 37, pg 32-49, 2006). Biological Control 38 (1): 4-21.

Gassmann AJ, Stock SP, Carriere Y, Tabashnik BE. 2006. Effect of entomopathogenic nematodes on the fitness cost of resistance to Bt toxin Cry1Ac in pink bollworm (Lepidoptera : Gelechiidae). Journal of Economic Entomology 99 (3): 920-926.

Nadler SA, Bolotin E, Stock SP. 2006. Phylogenetic relationships of Steinernema Travassos, 1927 (Nematoda : Cephalobina : Steinernematidae) based on nuclear, mitochondrial and morphological data. Systematic Parasitology 63 (3): 161-181.

Adams BJ, Fodor A, Koppenhofer HS, Stackebrandt E, Stock SP, Klein MG. 2006. Biodiversity and systematics of nematode-bacterium entomopathogens. Biological Control 37 (1): 32-49.

Stock, S. P. 2005. Insect parasitic nematodes: from lab curiosities to model organisms. J. Invert. Pathol. 89: 57-66.

Uribe-Lorio, L., Mora, M. Stock, S. P. 2005. First record of entomopathogenic nematodes (Steinernematidae and Heterorhabditidae) in Costa Rica. J. Invert. Pathol. 88: 226-231.

Stock, S. P. and Hunt, D. J. 2005. Nematode Morphology and Systematics. In: Grewal, P. S., Ehlers, R. U. and Shapiro-Ilan, D. I. (eds.) Nematodes as Biological Control Agents. CAB International Publishing. pp 3-43.

Hubbard, J. E. Schmitt, M. McClure, M. A., Stock, S. P. and Hawes, M. C. 2005. Increased penetration of host roots after recovery from root-exudate-induced quiescence. Nematology 7: 321-331.

Stock, S. P., Caicedo, A. M. and Calatayud, P. A. 2005. Rhabditis (Oscheius) colombiana n. sp. (Nematoda: Rhabdtidae) a necromenic associate of the subterranean burrower bug Cyrtomenus bergi (Hemiptera: Cydnidae) in the Cauca Valley, Colombia. Nematology 7: 363-373.

S. A. Nadler, P. De Ley, M. Mundo-Ocampo, A. B. Smythe, S. P. Stock, D. Bumbarger, B. J. Adams, I. T. De Ley, O. Holovachov, J. G. Baldwin. 2005. Phylogeny of Cephalobina (Nematoda): Molecular evidence for substantial phenotypic homoplasy and incongruence with traditional classifications. J. Nematology (In Press)

Stock, S. P. Griffin, C. T. and Chaenari, R. 2004. Morphological and molecular characterization of Steinernema hermaphroditum n. sp. (Nematoda: Steinernematidae), an entomopathogenic nematode from Indonesia, and its phylogenetic relationship with other closely related taxa. Nematology 6: 401-412.

Hazir, S., Kaya, H.K, Stock, S.P. and Keskin, N. 2003. Entomopathogenic nematodes (Steinernematidae and Heterorhabditidae) for biological control of soil pests. Turkish Journal of Biology 27; 181-202.

Cutler, C. G. and Stock, S. P. 2003. Steinernema websteri n. sp. (Rhabditida: Steinernematidae), a new entomopathogenic nematode from China. Nematologia Mediterranea 31: 215-224.

Campbell, J. F., Lewis, E. E., Stock, S. P., Nadler, S. A. and H. K. Kaya. 2003. Evolution of host search strategies in entomopathogenic nematodes (Nematoda: Steinernematidae). Journal of Nematology 35: 142-145

Stock, S. P. and Reid, A. P. 2003. Biosystematics of entomopathogenic nematodes (Steinernematidae, Heterorhabditidae): current status and future directions. In: Cook, R. & Hunt, D.J. (Eds). Proceedings of the Fourth International Congress of Nematology, 8 - 13 June 2002, Tenerife, Spain. Nematology Monographs and Perspectives 2, 435-446.