Neotropical Entomology

, Volume 47, Issue 1, pp 131–138 | Cite as

Susceptibility of Diaphorina citri (Hemiptera: Liviidae) and Its Parasitoid Tamarixia radiata (Hymenoptera: Eulophidae) to Entomopathogenic Fungi under Laboratory Conditions

  • K. H. Ibarra-Cortés
  • A W Guzmán-Franco
  • H. González-Hernández
  • L. D. Ortega-Arenas
  • J. A. Villanueva-Jiménez
  • A. Robles-Bermúdez
Biological Control


Diaphorina citri (Kuwayama) is a global pest of citrus that transmits the bacteria associated with the disease, Huanglongbing. Entomopathogenic fungi and the parasitoid Tamarixia radiata (Waterston) are important biological control agents of this pest and likely to interact in D. citri populations. As a basis for interaction studies, we determined the susceptibility of nymphs and adults of D. citri and adults of the parasitoid T. radiata to six fungal isolates from the species Beauveria bassiana s.l. (Bals.-Criv.) Vuill. (isolates B1 and B3), Metarhizium anisopliae s.s. (Metsch.) (Ma129 and Ma65) and Isaria fumosorosea Wize (I2 and Pae). We conducted experiments evaluating infection levels in all three insect groups following inoculation with a series of conidial concentrations (1 × 104–1 × 108 conidia mL−1). Results showed that D. citri nymphs and T. radiata were more susceptible to fungal isolates than D. citri adults. Overall, B. bassiana and M. anisopliae isolates caused the greatest infection compared with I. fumosorosea isolates in all three groups of insects. Isolates B1 (B. bassiana) and Ma129 (M. anisopliae) infected a greater proportion of adults and nymphs of D. citri, respectively. Both isolates of B. bassiana caused greater infection in T. radiata compared with isolates of the other fungal species. We propose that isolates B1 and Ma129 are the strongest candidates for control of D. citri. Our results represent the first report of entomopathogenic fungi infecting T. radiata, and the basis for future studies to design a biological control programme that uses both agents more efficiently against D. citri populations.


Biological control, Asian citrus psyllid, bioassay, citrus, entomopathogens 



KHIC received a scholarship from Consejo Nacional de Ciencia y Tecnología (CONACYT) Mexico for her PhD. This research was partially supported by the Fidecomiso 2013 - Colegio de Postgraduados. We are grateful to Cesar Hugo Arredondo Bernal MSc. and personnel at the Centro Nacional de Referencia de Control Biologico for providing the insects. We also thank Dr. Roberto Lezama-Gutierrez for allowing us to use the incubators in his laboratory for the experiments reported here.


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Copyright information

© Sociedade Entomológica do Brasil 2017

Authors and Affiliations

  • K. H. Ibarra-Cortés
    • 1
  • A W Guzmán-Franco
    • 1
  • H. González-Hernández
    • 1
  • L. D. Ortega-Arenas
    • 1
  • J. A. Villanueva-Jiménez
    • 2
  • A. Robles-Bermúdez
    • 3
  1. 1.Posgrado en Fitosanidad - Entomología y Acarología, Colegio de PostgraduadosTexcocoMexico
  2. 2.Colegio de Postgraduados, Campus VeracruzVeracruzMexico
  3. 3.Facultad de AgronomíaUniv Autónoma de NayaritXaliscoMexico

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