Effects of Tomato Zonate Spot Virus Infection on the Development and Reproduction of Its Vector Frankliniella occidentalis (Thysanoptera: Thripidae)

Authors

  • Xue Zheng Biotechnology and Germplasm Resource Institute, Yunnan Academy of Agricultural Sciences, Yunnan Province Key Laboratory of Agricultural Biotechnology, Kunming 650223
  • Jie Zhang Biotechnology and Germplasm Resource Institute, Yunnan Academy of Agricultural Sciences, Yunnan Province Key Laboratory of Agricultural Biotechnology, Kunming 650223
  • Yongdui Chen Biotechnology and Germplasm Resource Institute, Yunnan Academy of Agricultural Sciences, Yunnan Province Key Laboratory of Agricultural Biotechnology, Kunming 650223
  • Jiahong Dong Biotechnology and Germplasm Resource Institute, Yunnan Academy of Agricultural Sciences, Yunnan Province Key Laboratory of Agricultural Biotechnology, Kunming 650223
  • Zhongkai Zhang Biotechnology and Germplasm Resource Institute, Yunnan Academy of Agricultural Sciences, Yunnan Province Key Laboratory of Agricultural Biotechnology, Kunming 650223

Keywords:

Tomato zonate spot virus (TZSV), western flower thrips, development, reproduction

Abstract

The western flower thrips, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), is the main vector of Tomato Zonate Spot Virus (TZSV) in Yunnan, China. We investigated the life history parameters of F. occidentalis on tomato and pepper leaves either with or without TZSV infection. The total duration of the immature stages of F. occidentalis reared on TZSV-infected leaves was significantly shorter than the total duration of those reared on uninfected leaves. Also the survival rates of the instars and prepupae on TZSV-infected tomato and pepper leaf disks were significantly higher than those on uninfected tomato and pepper leaf disks. The F. occidentalis populations reared on TZSV-infected tomato and pepper leaf disks respectively increased 11.97- and 10.64-fold in 1 generation, while those reared on uninfected tomato and pepper leaf disks increased only 8.10- and 6.45-fold, respectively. These results demonstrated that TZSV infection improved the fitness and host suitability of its vector, F. occidentalis. Also our findings suggest that TZSV-infection is likely to induce larger field populations of F. occidentalis, thereby increasing the probability of TZSV transmission.

 

Los trips occidental de las flores, Frankliniella occidentalis, (Pergande) (Thysanoptera: Thripidae), es el principal vector del Virus de la Mancha Zonada del Tomate (VMZT) en Yunnan, China. Se investigó los parámetros del ciclo de vida de F. occidentalis sobre hojas de tomate y pimiento con o sin infección por VMZT. La duración total de las etapas inmaduras de F. occidentalis criadas en las hojas infectadas por el VMZT fue significativamente más corta que la duración total de las criadas en las hojas no infectadas. También, las tasas de sobrevivencia de los instares y prepupas sobre discos de hojas de tomate y pimiento infectadas por VMZT fueron significativamente más altas que las tasas sobre discos de hojas de tomate y pimiento no infectadas. Las poblaciones del F. occidentalis criadas sobre discos de hojas de tomate y pimienta infectados por VMZT, incrementaron 11.97 y 10.64 veces, respectivamente en 1 generación, mientras que las criadas sobre discos de hojas de tomate y pimienta no infectadas incrementaron sólo 8.10 y 6.45 veces, respectivamente. Estos resultados demostraron que la infección por VMZT mejoró el estado físico e idoneidad de su vector, F. occidentalis. También nuestros hallazgos sugieren que es probable que la infección por VMZT induzca poblaciones de campo de F. occidentalis más grandes y con ello incrementando la probabilidad de transmisión de VMZT.

 

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Published

2014-06-20

Issue

Vol. 97, No. 2 (June 2014)

Section

Research Papers

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