Detection of Tetranychus horridus (Hazelnut mite) in Victoria and New South Wales

Date de publication

mer, 03 Mai 2017, 23:23

Dernière mise à jour effectuée le

juin 23, 2023, 5:20 matin

Report Number

AUS-81/2

Pays

Australia

Identité de l'organisme nuisible

Tetranycopsis horridus - (TTNYHO)

Situation du signalement

Final

Hôtes

Tetranycopsis horridus has a broad host range that includes plants from several families. Known hosts include: Betulaceae: Alnus sp.; Carpinus betulus; Corylus avellana; Corylus colurna; Corylus maxima; Corylus sp. Compositae: Achillea sp. Cupressaceae: Thuja sp. Fagaceae: Quercus sp. Juglandaceae: Juglans regia. Leguminosae: Phaseolus vulgaris Pinaceae: Picea glauca; Pinus sp. Salicaceae: Salix aegyptiaca.

Pest Status (old values from ISPM 8 -1998 )

• Present: only in some areas

Pest Status (ISPM 8 - 2021)

• Present: not widely distributed and not under official control

Distribution géographique

Tetranycopsis horridus is present in New South Wales and is widespread in Victoria.

Résumé

Tetranycopsis horridus was first reported on hazelnut in Victoria in 2016. Further surveys during February 2016 have shown a widespread distribution in Victoria. Tetranycopsis horridus was then detected in New South Wales as a result of targeted surveillance following its detection in Victoria. Tetranycopsis horridus has a broad host range but infestations in Australia are restricted to hazelnut plantations. The mite feeds on hazelnut leaves, causing discolouration that includes visible white or yellowish spots. The mites are found mainly on the underside of the leaves and have been reported as being destructive to commercial hazelnut crops.

Danger

Tetranycopsis horridus has been detected at a limited number of properties in regional Victoria and New South Wales. All infestations have been identified on Corylus (hazelnut). Tetranycopsis horridus has been reported as destructive to economic crops, specifically hazelnuts. It is also known to infest walnuts (Juglans sp.), pine (Pinus sp.), willow, oaks (Quercus sp.) and alder (Alnussp.). Tetranycopsis horridus is considered not technically feasible or cost beneficial to eradicate in Australia.

Contact pour demandes d'information

Australian Chief Plant Protection Officer Australian Government Department of Agriculture GPO Box 858 Canberra ACT 2601 [email protected]

Fichiers de rapports

Site web

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