Located at Maricopa Agricultural
Center.
I have broad interests in insect-crop
inter-actions and applied insect
ecology with particular emphasis
on those aspects, which may be exploited
for sound ecological and economical
pest management. My responsibilities
are to develop research and extension
IPM programs for cotton. In addition,
I am interested in insect phenology,
diapause, insect-water relations,
predictive modeling, pest biology,
sampling, thresholds, and damage
dynamics.
Crowder DW, Carrière Y, Tabashnik BE, Ellsworth PC,
Dennehy TJ. 2006. Modeling evolution of resistance to pyriproxyfen
by the sweetpotato whitefly (Homoptera : Aleyrodidae). Journal
of Economic Entomology 99 (4): 1396-1406.
Carrière Y, Ellsworth PC, Dutilleul P, Ellers-Kirk C, Barkley
V, Antilla L. 2006. A GIS-based approach for areawide pest management:
the scales of Lygus hesperus movements to cotton from alfalfa,
weeds, and cotton. Entomologia Experimentalis et Applicata
118 (3): 203-210.
Naranjo SE, Ellsworth PC. 2005. Mortality dynamics
and population regulation in Bemisia tabaci. Entomologia
Experimentalis et Applicata 116 (2): 93-108.
Ellsworth, P.C. and Barkley, V. 2005. Transitioning
Lygus chemical controls to more selective options for Arizona
Cotton. pp. 165-178. In Cotton, A College of Agriculture Report, Series
P-142. University of Arizona, Tucson.
Goolsby JA, DeBarro PJ, Kirk AA, Sutherst RW, Canas L, Ciomperlik
MA, Ellsworth PC, Gould JR, Hartley DM, Hoelmer KA,
Naranjo SE, Rose M, Roltsch WJ, Ruiz RA, Pickett CH, Vacek DC. 2005
Post-release evaluation of biological control of Bemisia tabaci
biotype "B" in the USA and the development of predictive
tools to guide introductions for other countries. Biological Control
32 (1): 70-77.
Naranjo SE, Ellsworth PC, Hagler JR. 2004. Conservation
of natural enemies in cotton: role of insect growth regulators in
management of Bemisia tabaci. Biological Control
30 (1): 52-72.
V. Barkley and Ellsworth, P.C. 2004. Search for
effective chemical controls for Lygus bugs and whiteflies
in Arizona cotton. In J.C. Silvertooth [ed.], Cotton, A College of
Agriculture and Life Sciences Report P-138. Publ. No. AZ1335. University
of Arizona, College of Agriculture and Life Sciences, Tucson, AZ.
pp. 187-197.
Naranjo SE, Hagler JR, Ellsworth PC. 2003. Improved
conservation of natural enemies with selective management systems
for Bemisia tabaci (Homoptera : Aleyrodidae) in cotton. Biocontrol
Science and Technology 13 (6): 571-587.
Palumbo, J.C., P.C. Ellsworth, T.J. Dennehy, and
R.L. Nichols. 2003. Cross-Commodity Guidelines for Neonicotinoid Insecticides
in Arizona. IPM Series 17. Publ. No. AZ1319. University of Arizona,
College of Agriculture and Life Sciences, Cooperative Extension, Tucson,
Arizona. 4 pp.
Ellsworth, P.C. and V. Barkley. 2003. Making late
season decisions to terminate insecticide use against Lygus.
In J.C. Silvertooth [ed.], Cotton, A College of Agriculture and Life
Sciences Report P-134. Publ. No. AZ1312. University of Arizona, College
of Agriculture and Life Sciences, Tucson, AZ. pp. 204-217.
Naranjo SE, Ellsworth PC, Chu CC, Henneberry TJ.
2002. Conservation of predatory arthropods in cotton: Role of action
thresholds for Bemisia tabaci (Homoptera : Aleyrodidae).
Journal of Economic Entomology 95 (4): 682-691.
Naranjo, S.E. & Ellsworth, P.C. 2002. Looking
for functional non-target differences between transgenic and conventional
cottons: implications for biological control. In J.C. Silvertooth
[ed.], Cotton, A College of Agriculture and Life Sciences Report.
Publ. No. AZ1283. University of Arizona, College of Agriculture and
Life Sciences, Tucson, AZ. pp. 158-163.
Ellsworth, P.C., Moser, H., Henneberry, T, Majeau,
G. & Subramani, J. 2002. Transgenic comparisons of pink bollworm
efficacy and response to heat stress. In J.C. Silvertooth [ed.], Cotton,
A College of Agriculture and Life Sciences Report. Publ. No. AZ1283.
University of Arizona, College of Agriculture and Life Sciences, Tucson,
AZ. pp. 147-157.
Naranjo SE, Ellsworth PC. 2001. Special Issue: Challenges
and opportunities for pest management of Bemisia tabaci in
the new century. Crop Protection 20 (9): 707-707.
Ellsworth PC, Martinez-Carrillo JL. 2001. IPM for
Bemisia tabaci: a case study from North America. Crop
Protection 20 (9): 853-869.
Naranjo SE, Ellsworth PC, Chu CC, Henneberry TJ,
Riley DG, Watson TF, Nichols RL. 1998. Action thresholds for the management
of Bemisia tabaci (Homoptera : Aleyrodidae) in cotton. Journal
of Economic Entomology 91 (6): 1415-1426.
Hentz MG, Ellsworth PC, Naranjo SE, Watson TF. 1998.
Development, longevity, and fecundity of Chelonus sp.nr.
curvimaculatus (Hymenoptera : Braconidae), an egg-larval
parasitoid of pink bollworm (Lepidoptera : Gelechiidae). Environmental
Entomology 27 (2): 443-449.
Naranjo SE, Diehl JW, Ellsworth PC. 1997. Sampling
whiteflies in cotton: Validation and analysis of enumerative and binomial
plans. Environmental Entomology 26 (4): 777-788.
Naranjo, S.E., J.W. Diehl & P.C. Ellsworth.
1997. Sampling whiteflies in cotton: Validation and analysis of numerical
and binomial models. Environmental Entomology 26: 777-788.
Hentz, M.E., P.C. Ellsworth & S.E. Naranjo.
1997. Biology and morphology of Chelonus sp. nr. curvimaculatus
(Hymenoptera: Braconidae) as a parasitoid of Pectinophora gossypiella
(Saunders) (Lepidoptera: Gelechiidae). Annals of the Entomological
Society of America.
Ellsworth, P.C., J.W. Diehl & S.E. Husman. 1996.
"Development of integrated pest management infrastructure: A
community-based action program for whitefly management." In D.
Gerling, ed., Bemisia 1995: Taxonomy, biology, damage, control and
management. pp. 681-693.
Norman, J.W., Jr., D.G. Riley, P.A. Stansley, P.C. Ellsworth
& N.C. Toscano. 1996. Management of Silverleaf Whitefly: A Comprehensive
Manual on the Biology, Economic Impact and Control Tactics. College
Station, TX. 22 pp.
Ellsworth, P.C., J.W. Diehl & S.E. Naranjo.
1996. Sampling Sweetpotato Whitefly Nymphs in Cotton. IPM Series No.
6. The University of Arizona, Cooperative Extension. Publication #196006.
Tucson, AZ. 2 pp.
