EPPO Global Database

Citrus tristeza virus(CTV000)

Distribution details in Algeria

Situation
Current pest situation evaluated by EPPO on the basis of information dated 2019: Present, restricted distribution
From CABI Disease map 289 (1998): Present, no details
Comments
EPPO Reporting Service (1990/02) : Reported in 1950s on Meyer lemon, no spread, a few infected trees may remain.

EPPO Reporting Service (2003/052) : isolated finding in 2003. Found only in 2 citrus multiplication plots at experimental stations in Blida Wilaya.

EPPO Reporting Service (2003/072) : specific eradication measures applied and CTV in principle eradicated. This will be confirmed by further surveys in the area.

From Arous et al. (2019): during a large-scale survey carried out in 2016-2018 in the Chlef Valley (one of the main citrus growing areas), 54 trees (out of 1680) were found infected by CTV. In addition, both T30 and VT genotypes were detected.
References
* Arous SA, Guenaoui Y, Drais MI, Djelouah K (2019) First detection of a virulent strain of Citrus tristeza virus (Closteroviridae) in a citrus orchard of Chlef Valley (Algeria). EPPO Bulletin 49(2), 321-326.

* Brunt A, Crabtree K, Dallwitz M, Gibbs A, Watson L (1996) Viruses of plants, 409-411. CAB International, Wallingford, UK.

* NPPO of Algeria (2003-05, 2003-06).
Situation in neighbouring countries
Country State Status
Libya Present, restricted distribution view...
Morocco Present, few occurrences view...
Tunisia Absent, pest eradicated view...