EPPO Global Database

EPPO Reporting Service no. 01 - 1993 Num. article: 1993/02

Efficacy of Trioza erytreae to vector citrus geening bacterium

Experiments in South Africa showed that Trioza erytreae (EPPO A1 pest) is a very efficient vector of citrus greening bacterium (EPPO A1 organism). Healthy citrus psyllas were allowed different acquisition feeding times on citrus greening infected citrus seedlings and then transferred at daily intervals to healthy citrus plants. This was carried out to measure the time period from the acquisition of the bacterium to its transmission.

It was found that after only 1 h of feeding on diseased material the citrus psylla could vector the citrus greening bacterium, but only after a latent period of 3-4 days. If the citrus psylla fed longer than 8 h on diseased citrus material there was no latent period.


Van Vuuren, S.P.; Van Der Merwe, M.J. (1992) Efficacy of citrus psylla, Trioza erytreae, as a vector of citrus greening disease.
Phytophylactica 24, 285-288.