, Volume 55, Issue 5, pp 601–611 | Cite as

Toxicity of pesticides to Tamarixia radiata, a parasitoid of the Asian citrus psyllid



Sixteen pesticides including two fungicides were evaluated for toxicity to adult Tamarixia radiata (Waterston) (Hymenoptera: Eulophidae), a parasitoid of the Asian citrus psyllid, Diaphorina citri Kuwayama (Hemiptera: Psyllidae). Percentage mortality data were evaluated to generally assess IPM-compatibility of the pesticides with adult parasitoids. The following were found to be least compatible with (most toxic to) adult T. radiata based on the toxicity of direct sprays and potential long residual life on leaves: carbaryl, chlorpyrifos, and fenpropathrin. Although highly toxic to the parasitoid as direct sprays or freshly dried residues, each of the following was more compatible with T. radiata because the toxicity of residues of these pesticides was either low at one to three days after application or relatively non-persistent: abamectin, chenopodium oil, fenpyroximate, and spirotetramat. Depending on environmental conditions, imidacloprid (foliar-applied), phosmet, pyridaben, sulfur and 435 spray oil might also be somewhat more compatible for the same reasons. The pesticides that consistently appeared to be most compatible with T. radiata were aluminum tris, copper hydroxide, diflubenzuron, and kaolin clay (Surround WP).


Biological control Citrus greening disease Eulophidae Huanglongbing Hymenoptera Diaphorina citri Asian citrus psyllid 



The authors thank Matt Hentz, Kathy Moulton, and Anthea Diamondis (USDA-ARS) for their invaluable assistance during this research. Daniel Flores (USDA-APHIS) critically reviewed an early draft of the manuscript. This research was funded in-part by a grant from the Florida Citrus Production Research Advisory Committee. This article reports the results of research only. Mention of a trademark or proprietary product is solely for the purpose of providing specific information and does not constitute a guarantee or warranty of the product by the U.S. Department of Agriculture and does not imply its approval to the exclusion of other products that may also be suitable.


  1. Abbott W (1925) A method for computing the effectiveness of an insecticide. J Econ Entomol 18:265–267Google Scholar
  2. Barr NB, Hall DG, Weathersbee AA, Nguyen R, Stansly P, Qureshi JA, Flores D (2009) Comparison of laboratory colonies and field populations of Tamarixia radiata, an ecto-parasitoid of the Asian citrus psyllid, using international transcribed spacer and cytochrome oxidase subunit 1 DNA sequences. J Econ Entomol 102:2325–2332CrossRefPubMedGoogle Scholar
  3. Bové JM (2006) Huanglongbing: a destructive, newly-emerging, century-old disease of citrus. J Plant Pathol 88:7–37Google Scholar
  4. Chiasson H, Vincent C, Bostanian NJ (2004) Insecticidal properties of a Chenopodium-based botanical. J Econ Entomol 97:1378–1383CrossRefPubMedGoogle Scholar
  5. Chien CC (1995) The role of parasitoids in the pest management of citrus psyllid. In: Proceedings of the Symposium on Research and Development of Citrus in Taiwan, Taichung, Taiwan, pp 245–261Google Scholar
  6. Chien CC, Chu YI (1996) Biological control of citrus psyllid, Diaphorina citri in Taiwan. Biological Pest Control in Systems of Integrated Pest Management: 1996. Reprinted from Food and Fertilizer Technology Center Book Series No. 47, Taipei, Taiwan, pp 93–104Google Scholar
  7. Cocco A, Hoy MA (2008) Toxicity of organosilicone adjuvants and selected pesticides to the Asian citrus psyllid (Hemiptera: Psyllidae) and its parasitoid Tamarixia radiata (Hymenoptera: Eulophidae). Fla Entomol 91:610–620Google Scholar
  8. DeBach P (1979) Biological control by natural enemies. Cambridge University Press, New York, p 323Google Scholar
  9. Étienne J, Quilici S, Marival D, Franck A (2001) Biological control of Diaphorina citri (Hemiptera: Psyllidae) in Guadeloupe by imported Tamarixia radiata (Hymenoptera: Eulophidae). Fruits 56:307–315CrossRefGoogle Scholar
  10. Halbert SE, Manjunath KL (2004) Asian citrus psyllids (Sternorrhyncha: Psyllidae) and greening disease of citrus: a literature review and assessment of risk in Florida. Fla Entomol 87:330–353CrossRefGoogle Scholar
  11. Hall DG, Lapointe SL, Wenninger EJ (2007) Effects of a particle film on biology and behavior of Diaphorina citri (Hemiptera: Psyllidae) and its infestations in citrus. J Econ Entomol 100:847–854CrossRefPubMedGoogle Scholar
  12. Hall DG, Hentz MG, Adair RC (2008) Population ecology and phenology of Diaphorina citri in two Florida citrus groves. Environ Entomol 37:914–924CrossRefPubMedGoogle Scholar
  13. Hoy MA, Nguyen R (2000) Classical biological control of Asian citrus psylla. Citrus Ind 81(12):48–50Google Scholar
  14. Hoy MA, Nguyen R, Jeyaprakash A (1999) Classical biological control of the Asian citrus psylla-release of Tamarixia radiata. Citrus Ind 80(9):20–22Google Scholar
  15. Kiuchi F, Itano Y, Uchiyama N, Honda G, Tsubouchi A, Nakajima-Shimada J, Aoki T (2002) Monoterpene hycroperoxides with trypanocidal activity from Chenopodium ambrosioides. J Nat Prod 65:509–512CrossRefPubMedGoogle Scholar
  16. Knight AL, Unruh TR, Christianson BA, Puterka GJ, Glenn DM (2000) Effects of a kaolin-based particle film on obliquebanded leafroller (Lepidoptera: Tortricidae). J Econ Entomol 93:744–749CrossRefPubMedGoogle Scholar
  17. Michaud JP (2004) Natural mortality of Asian citrus psyllid (Homoptera: Psyllidae) in central Florida. Biol Control 29:260–269CrossRefGoogle Scholar
  18. Pluke RWH, Qureshi JA, Stansly PA (2008) Citrus flushing patterns, Diaphorina citri (Homoptera: Psyllidae) populations and parasitism by Tamarixia radiata (Hymenoptera: Eulophidae) in Puerto Rico. Fla Entomol 91:36–42CrossRefGoogle Scholar
  19. Qureshi JA, Rogers ME, Hall DG, Stansly PA (2009) Incidence of invasive Asian citrus psyllid, Diaphorina citri (Hemiptera: Psyllidae) and its introduced parasitoid Tamarixia radiata (Hymenoptera: Eulophidae) in Florida citrus. J Econ Entomol 102:247–256CrossRefPubMedGoogle Scholar
  20. Rogers ME, Timmer LW (2007) Florida citrus pest management guide. University of Florida Cooperative Extension Service, Institute of Food and Agricultural Services. SP-43. Download at
  21. SAS Institute (2008) SAS Procedures Guide, Version 9.1. SAS Institute, Cary, NC, USAGoogle Scholar
  22. Skelley LH, Hoy MA (2004) A synchronous rearing method for the Asian citrus psyllid and its parasitoids in quarantine. Biol Control 29:14–23CrossRefGoogle Scholar
  23. Tsai JH, Liu YH (2000) Biology of Diaphorina citri (Homoptera: Psyllidae) on four host plants. J Econ Entomol 93:1721–1725CrossRefPubMedGoogle Scholar
  24. Tsai JH, Wang JJ, Liu YH (2002) Seasonal abundance of the Asian citrus psyllid, Diaphorina citri (Homoptera: Psyllidae) in southern Florida. Fla Entomol 85:446–451CrossRefGoogle Scholar
  25. Ulmer BJ, Lapointe SL, Peña JE, Duncan RE (2006) Toxicity of pesticides used in citrus to Aprostocetus vaquitarum (Hymenoptera: Eulophidae), an egg parasitoid of Diaprepes abbreviatus (Coleoptera: Curculionidae). Fla Entomol 89:10–19CrossRefGoogle Scholar

Copyright information

© US Government 2010

Authors and Affiliations

  1. 1.USDA-ARSFort PierceUSA
  2. 2.Division of Plant Industry, Florida Department of Agriculture and Consumer ServicesGainesvilleUSA

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