JP Michaud

J.P. Michaud


Phone: (785) 625-3425
Fax: (785) 625-4369
Area(s) of Specialization:
Integrated Pest Management
Biological Control
Insect Ecology

Bio Brief

My background is in insect ecology, insect behavior, and biological control, particularly of aphids. I am interested in developing improved IPM programs for the management of insect pests of field crops on the High Plains, particularly in the integration of biological control with other control tactics. Examples include host plant resistance, agronomic and cultural practices, and insecticide seed treatments, all of which are important components of field crops IPM with the potential to interact with biological control agents and impact beneficial species.


B.S. Animal Behavior, McGill University, Montreal PQ Canada,
M.S. Pest Management, Simon Fraser University, Burnaby BC Canada,
Ph.D. Entomology, Simon Fraser University, Burnaby BC Canada,
Post Doctoral Associate , University of Florida, Citrus Research and Education C, 1996 - 2002.


My research program has several areas of focus. One is the ecology and behavior of lady beetle species that are important biological control agents of cereal aphids on the High Plains, primarily Hippodamia convergens and Coleomegilla maculata. Recent work has addressed maternal and paternal effects in these species and the causes and consequences of cannibalism behavior in different life stages. The recent invasion of sugarcane aphid on grain sorghum has stimulated a new focus of research into biological control and host plant resistance as tactics for managing this pest in the central Great Plains. Other work is investigating the non-target impacts of insecticidal seed treatments on beneficial insects in sunflowers and the selectivity of new insecticides for control of cereal aphids. I also collaborate on a range of biological control research projects in various foreign countries.


Selected Recent Publications

Parvizi, Y., A. Rasekh and J.P. Michaud (2017) Cornicle secretions by Aphis fabae (Hemiptera: Aphididae) result in age-dependent costs and improved host suitability for Lysiphlebus fabarum (Marshall) (Hymenoptera: Braconidae). Bull. Entomol. Res. (in press).

Abdelwahab, A., J.P. Michaud, M.H. Bayoumy, S.S. Awadalla & M. El-Gendy (2017) Limb ablation and regeneration in Harmonia axyridis (Coleoptera: Coccinellidae): costs for regenerators, but benefits for their progeny. Entom. Exp. Appl. (in press).

Abdelwahab, A.H., J.P. Michaud, M.H. Bayoumy, S. Awadallal & M. El-Gendy. (2017) No nutritional benefits of egg cannibalism for Coleomegilla maculata (Coleoptera: Coccinellidae) on a high quality diet. Bull. Entomol. Res.

Rasekh, A., J.P. Michaud, L. Mohseni & F. Kocheili. (2017) An asexual strain of Lysiphlebus fabarum (Hymenoptera: Braconidae) gains fitness in superparasitized hosts, but a sexual strain pays costs. Ecol. Entomol. DOI: 10.1111/een.12473.

Abdelwahab, A.H., J.P. Michaud, M.H. Bayoumy, S. Awadallal & M. El-Gendy. (2017) Differences in flight activity of Coleomegilla maculata and Hippodamia convergens (Coleoptera: Coccinellidae) following emergence, mating, and reproduction. Environ. Entomol. DOI: 10.1093/ee/nvx136.

Barbosa, P.R.R., J.P. Michaud, C.L. Bain & J.B. Torres. (2017) Relative toxicity of three aphicides to the aphid predators Chrysoperla carnea (Neuroptera: Chrysopidae) and Orius insidiosus (Hemiptera: Anthocoridae). Ecotoxicology 26: 589-599.

Michaud, J.P., Y. Zhang & C.L. Bain. (2017) Feeding by Melanaphis sacchari (Hemiptera: Aphididae) facilitates use of sorghum by Rhopalosiphum padi, but reciprocal effects are negative. Environ. Entomol. 46: 268- 273.

Michaud, J.P., P.R.R. Barbosa, C.L. Bain & J.B. Torres (2016). Extending the "Ecology of Fear" beyond prey: Nonconsumptive effects among competing aphid predators. Environ. Entomol. 45: 1398-1403.

Colares, F., J.P. Michaud, C.L. Bain & J.B. Torres (2016) Relative toxicity of two aphicides to Hippodamia convergens (Coleoptera: Coccinellidae): Implications for management of sugarcane aphid, Melanaphis sacchari. J. Econ. Entomol. 110: 52-58.

Barbosa, P.R.R., J.P. Michaud, A.R.S. Rodrigues & J.B. Torres. (2016) Dual resistance to lambda-cyhalothrin and dicrotophos in Hippodamia convergens (Coleoptera: Coccinellidae). Chemosphere 159: 1-9.

Bayoumy, M.H., R. Perumal & J.P. Michaud (2016) Comparative life histories of greenbugs and sugarcane aphids (Hemiptera: Aphididae) co-infesting susceptible and resistant sorghums. J. Econ. Entomol. 109: 385-391.

Feng, DD., J.P. Michaud, P. Li, Z.S. Zhou & Z.F. Xu. (2015) The native ant, Tapinoma melanocephalum, improves the survival of an invasive mealybug, Phenacoccus solenopsis, by defending it from parasitoids. Nature Sci. Rep. DOI: 10.1038/srep15691.

Colares, F., J.P. Michaud, J.B. Torres & C.S.A. Silva-Torres. (2015) Polyandry and male mating history affect the reproductive performance of Eriopis connexa (Coleoptera: Coccinellidae). Ann. Entomol. Soc. Am. 108: 736-742.

Bayoumy, M.H., J.P. Michaud & C.L. Bain. (2015) Polyandry restores fertility and paternal effects diminished by inbreeding in Hippodamia convergens. Ecol. Entomol. 40: 596-602.

Colares, F., J.P. Michaud & J.B. Torres. (2015) Indigenous aphid predators show high levels of preadaptation to a novel prey, Melanaphis sacchari. J. Econ. Entomol. 108: 2546-2555.

Bayoumy, M.H., & J.P. Michaud. (2015) Cannibalism in two subtropical lady beetles (Coleoptera: Coccinellidae) varies with density, life stage and food supply. J. Ins. Behav. 28: 387-402.

Bayoumy M.H. & J.P. Michaud. (2015) Egg cannibalism and its life history consequences vary with life stage, gender, and reproductive status in Hippodamia convergens. J. Econ. Entomol. 108: 1665-1674.

Vargas, G., L.A. Gómeza & J.P. Michaud. (2015) Sugarcane borers of the Colombian Cauca River Valley: current pest status and biological control. Fla. Entomol. 98: 728-735.

Colares, F., J.P. Michaud, Clint Bain & Jorge B. Torres. (2015) Recruitment of aphidophagous arthropods to sorghum plants infested with Melanaphis sacchari and Schizaphis graminum (Hemiptera: Aphididae). Biol. Control 90: 16-24.

Moscardini, V.F., P.C. Gontijo, J.P. Michaud & G.A Carvalho. (2015) Sublethal effects of two sunflower seed treatments on two nearctic lady beetles. Ecotox. 24: 1152-1161.

Iranipour, S., P. Benamoleai, S. Asgari & J.P. Michaud. (2015) Reciprocal crosses between two populations of Trissolcus vassilievi Mayr (Hymenoptera: Scelionidae) reveal maternal effects on thermal phenotypes. Bull. Entomol. Res. 105: 355-363.

Sundic, M., R. Haitlinger, J.P. Michaud and F. Colares. (2015) A new species of Erythraeus (Erythraeus) (Acari: Prostigmata: Erythraeidae) from central Kansas. Acarologia 55: 41-48.

Wang, S., X.L. Tan, Z.K. Shi, J.P. Michaud & F. Zhang. (2015) Sexual selection drives the evolution of limb regeneration in Harmonia axyridis. Bull. Entol. Res. 105: 245-252.

Bayoumy, M.H., M.A. Osman & J.P. Michaud. (2014) Host plant affects the searching efficiency of Stethorus gilvifrons (Coleoptera: Coccinellidae) foraging for Tetranychus urticae. Environ. Entomol. 43: 1309-1318.

Clayson, P.J., J.P. Michaud & H.F. van Emden. (2014) Antibiosis in wheat interacts with crowding stress to affect Metopolophium dirhodum development and susceptibility to malathion. Entomol. Exp. Appl. 153: 106-113.

Bayoumy, M.H., & J.P. Michaud. (2014) Female fertility in Hippodamia convergens (Coleoptera: Coccinellidae) is maximized by polyandry, but reduced by continued male presence. Eur. J. Entomol. 111: 513-520.

Mahi, H., A. Rasekh, J.P. Michaud & P. Shishehbor. (2014) The biology of Lysiphlebus fabarum (Braconidae, Aphidiinae) following cold storage of larvae and pupae. Entomol. Exp. Appl. 153: 10-19.

Moscardini, V.F., P.C. Gontijo, J.P. Michaud & G.A Carvalho (2014) Sublethal effects of chlorantraniliprole and thiamethoxam seed treatments when Lysiphlebus testaceipes (Hymenoptera: Braconidae) feed on sunflower extrafloral nectar. BioControl 59: 503-511.

Gontijo, P.C., V.F. Moscardini, J.P. Michaud & G.A. Carvalho. (2014) Non-target effects of chlorantraniliprole and thiamethoxam on Chrysoperla carnea (Neuroptera: Chrysopidae) when employed as sunflower seed treatments. J. Pest Sci. 87: 711-719.

Moghbeli, G.A., M. Ziaaddini, M.A. Jalali & J.P. Michaud (2014) Sex-specific responses of Asian citrus psyllid to volatiles of conspecific and host plant origin. J. Appl. Entomol. 138: 500-509.

Wang, S., K. Wang, J.P. Michaud, F. Zhang & X. Tan (2014) Reproductive performance of Propylea japonica (Coleoptera: Coccinellidae) under various light intensities, wavelengths and photoperiods. Eur. J. Entomol. 111: 341-347.

Mirhosseini, M.A., J.P. Michaud, M.A. Jalali & M. Ziaaddini (2014) Paternal effects correlate with female reproductive stimulation in a polyandrous ladybird, Cheilomenes sexmaculata. Bull. Entomol. Res. 104: 480-485.

Gontijo, P.C., V.F. Moscardini, J.P. Michaud & G.A. Carvalho. (2014) Non-target effects of two sunflower seed treatments on Orius insidiosus (Hemiptera: Anthocoridae). Pest Manag. Sci. DOI 10.1002/ps.3798.

Mohammadpour, M., M.A. Jalali, J.P. Michaud, M. Ziaaddini & H. Hashemi Rad (2014) Multiparasitism of stink bug eggs: Competitive interactions between Ooencyrtus pityocampae and Trissolcus agriope. BioControl 59: 279-286.

Wang, S., J.P. Michaud, X.L. Tan & F. Zhang (2014) Comparative suitability of aphids, thrips and mites as prey for the flower bug Orius sauteri (Hemiptera: Anthocoridae). Eur. J. Entomol. 111: 221-226.

Ameri, M., A. Rasekh & J.P. Michaud (2014) Body size affects host defensive behavior and progeny fitness in a parasitoid wasp, Lysiphlebus fabarum Marshall (Hymenoptera: Braconidae). Entomol. Exp. Appl. 150: 259-268.

Wang, S., X.L. Tan, J.P. Michaud & F. Zhang (2013) Light intensity and wavelength influence development, reproduction and locomotor activity in a predatory flower bug Orius sauteri (Poppius) (Hemiptera: Anthocoridae). BioControl 58: 667-674.

Ameri, M., A. Rasekh, J.P. Michaud & H. Allahyari (2013) Morphometric indicators of quality assessment in the aphid parasitoid, Lysiphlebus fabarum (Marshall) (Braconidae: Aphidiinae). Eur. J. Entomol. 110: 519-525.

Luo, S., J.P. Michaud, J.C. Li, J. Zhang, X.X. Liu & Q.W. Zhang (2013) Seasonal cues mediate host behaviour modification and cocoon polymorphism in Microplitis mediator (Hymenoptera: Braconidae). Eur. J. Entomol. 110: 271-276.

Chu, Y., J.P. Michaud, J. Zhang, Z. li, Y. Wang, H. Chen, J. Li, Z. Lu, Q. Zhang & X. Liu. (2013) Performance of Microplitis tuberculifer (Hymenoptera: Braconidae) parasitizing Mythimna separata (Lepidoptera: Noctuidae) in different larval instars. Biol. Control 69: 18-23.

Vargas, G.A., J.P. Michaud & J.R. Nechols. (2013) Age-specific maternal effects interact with larval food supply to modulate a developmental poymorphism in Coleomegilla maculata. Ecol. Entomol. 39: 39-46.

Michaud, J.P., M. Bista, G. Mishra & Omkar. (2013) Sexual activity diminishes male virility in two Coccinella species: Consequences for female fertility and progeny development. Bull. Entomol. Res.103: 570-577.

Luo, S., J.C. Li, J.P. Michaud, Z. Lu, X.X. Liu & Q.W. Zhang. (2013) Odor learning in Microplitis mediator (Hymenoptera: Braconidae) is mediated by sugar type and physiological state. Biol. Control 65: 207-211.

Vargas, G.A., J.P. Michaud & J.R. Nechols. (2013) Trajectories of reproductive effort in two aphidophagous lady beetles respond to variation in both income and capital. Environ. Entomol. 42: 341-353.

Wang, S., J.P. Michaud, X.L. Tan, L. Murray & F. Zhang. (2013) Melanism in a Chinese population of Harmonia axyridis (Coleoptera: Coccinellidae): A citerion for male investment with pleiotropic effects on behavior and fertility. J. Ins. Behav. 26: 679-689.

Luo, S., J.P. Michaud, J.C. Li, J. Zhang, X.X. Liu & Q.W. Zhang (2013) Seasonal cues mediate host behaviour modification and cocoon polymorphism inMicroplitis mediator (Hymenoptera: Braconidae). Eur. J. Entomol. 110: 271-276.

Vargas, G.A., J.P. Michaud & J.R. Nechols. (2012) Cryptic maternal effects in the ladybird beetle Hippodamia convergens vary with maternal age and body size. Entomol. Exp. Appl 146: 302-311.

Vargas, G.A., J.P. Michaud & J.R. Nechols. (2012) Larval food supply constrains female reproductive schedules in Hippodamia convergens (Coleoptera: Coccinellidae). Ann. Entomol. Soc. Am. 105: 832-839.

Vargas, G.A., J.P. Michaud & J.R. Nechols (2012) Maternal effects shape dynamic trajectories of reproductive allocation in the ladybird Coleomegilla maculata. Bull. Entomol. Res. 102: 558-565.

Noppe, Christophe, J.P. Michaud & Patrick LeClerq (2012) Intraguild predation between lady beetles and lacewings: Outcomes and consequences depend on focal prey and habitat complexity. Ann. Entomol. Soc. Am. 105: 562-571.

Jalali, M.A. & J.P. Michaud (2012) Aphid-plant interactions affect the suitability of Myzus spp. as prey for the two spot ladybird, Adalia bipunctata. Eur. J. Entomol. 109: 345-352.

Bayoumy, M.H. & J.P. Michaud (2012) Parasitism interacts with mutual interference to limit foraging efficiency in larvae of Nephus includens (Coleoptera: Coccinellidae). Biol. Control 62: 120-126.

Alabi, T., J. Dean, J.P. Michaud, F. Verheggen, G. Lognay & E. Haubruge. (2011) Does cuticular chemistry of the flour beetle, Tribolium brevicornis, deter cannibalism and predation of pupae? J. Ins. Sci. 11.114. Available online:

Fathi, S.A.A., N. Bakhshizadeh & J.P. Michaud. (2011) Spatial and temporal correspondence of sunn pest oviposition and egg parasitism by Trissolcus grandis in Firozabad, Iran. J. Appl. Entomol. 135: 666-672.

Iranipour, S., A.K. Pakdel, G. Radjabi & J.P. Michaud. (2011) Life tables for sunn pest, Eurygaster integriceps (Heteroptera: Scutelleridae), in northern Iran. Bull. Entomol. Res. 101: 33-44.

Wang, S., J.P. Michaud, X.L. Tan, F. Zhang & X.J. Guo. (2011) The aggregation behavior of Harmonia axyridis (Coleoptera: Coccinellidae) in Northeast China. BioControl 56: 193-206.

Michaud, J.P. & A.K. Grant. (2010) Variation in fitness of Dectes texanus (Coleoptera: Cerambycidae) as a function of host plant. Available online:

Rasekh, A., J.P. Michaud, A. Kharazi-Pakdel & H. Allahyari. (2010) Ant mimicry by an aphid parasitoid, Lysiphlebus fabarum (Hymenoptera: Aphidiidae). Available online:

Iranipour, S., B.Z. Nozad & J.P. Michaud. (2010) Thermal requirements of Trissolcus grandis (Hymenoptera: Scelionidae), an egg parasitoid of sunn pest.

Michaud, J.P., P.A. Stahlman, J.L. Jyoti & A.K. Grant. (2009) Plant spacing and weed control affect sunflower stalk insects and the girdling behavior of Dectes texanus (Coleoptera: Cerambycidae). J. Econ. Entomol. 102: 1044-1053.

Michaud, J.P. & A.K. Grant. (2009) The nature of resistance to Dectes texanus (Coleoptera: Cerambycidae) in wild sunflower, Helianthus annuus. J. Appl. Entomol. 133: 518-523.

Wang, S., J.P. Michaud, R. Zhang, S. Liu & F. Zhang. (2009) Seasonal cycles of assortative mating and reproductive behaviour in polymorphic populations of Harmonia axyridis in China. Ecol. Entomol. 34: 483-494.

Hodek, I. & J.P. Michaud. 2008. Why is Coccinella septempunctata so successful? Eur. J. Entomol. 105: 1-12.

Michaud, J.P. & J.L. Jyoti. 2008. Dietary complementation across life stages in the polyphagous lady beetle Coleomegilla maculata. Entomologia Experimentalis et Applicata 126: 40-45.

Alabi, T., J.P. Michaud, L. Arnaud, & E. Haubruge. 2008. A comparative study of cannibalism and predation in seven species of flour beetle. Ecol. Entomol. 33: 716-726.

Michaud, J.P. and J.L. Jyoti. 2007. Dietary complementation across life stages in a polyphagous lady beetle, Coleomegilla maculata. Entomol. Exp. Appl. 126: 40-45.

Michaud, J.P., A.K. Grant & J.L. Jyoti. 2007. Impact of the stem borer, Dectes texanus, on yield of the cultivated sunflower, Helianthus annuus. Journal of Insect Science 7: Art. No. 21.

Michaud, J.P., J.A. Qureshi & A.K. Grant. 2007. Sunflowers as a trap crop for reducing soybean losses to the stalk borer Dectes texanus (Coleoptera: Cerambysidae). Pest Management Science 63: 903-909.

Qureshi, J.A., P.W. Stahlman & J.P. Michaud. 2007. Plant population and weeds influence stalk insects, soil moisture, and yield in rainfed sunflowers. Insect Science 14: 425-435.

Michaud, J.P. & J.L. Jyoti. 2007. Repellency of conspecific and heterospecific larval residues to Hippodamia convergens (Coleoptera: Coccinellidae) ovipositing on sorghum plants. European Journal of Entomology 104: 399-405.