EASIN - European Alien Species Information Network

Thread Discussion: Bactrocera oleae [thread closed]

Author: Kostas Tsiamis
Created On: 12/2/2016 2:07 PM

Closed On: 1/10/2017 1:55 PM
Closing User: Kostas Tsiamis

Responsible Member(s):
Alain ROQUES
Wolfgang RABITSCH

Closed On: 1/10/2017 1:55 PM
Closing User: Kostas Tsiamis

Kostas Tsiamis
12/2/2016 2:07 PM

1) Is B.o. alien status correct? Should a native range in the Mediterranean be also indicated? See: https://iris.unipa.it/retrieve/handle/10447/95135/121949/merged_document_3.pdf (DOI: 10.1080/09583157.2011.594951 suggesting African origin based on number of natural competitors) 2) the first year of introduction in Europe recorded in EASIN is 1984, Switzerland. The species was determined by Rossi in 1790 (Musca oleae) and is widespread in the Mediterranean. The date of first introduction is therefore possibly not correct.

Wolfgang RABITSCH
12/9/2016 9:06 AM

This species is native in the Mediterranean. It was first recorded in Switzerland in 1982 (not 1984) in Locarno(see Neuenschwander 1984, Mitt. Schweiz. Entomol. Gesell. 57: 286). It is unknown if the species was introduced with the host plant recently or if southern Switzerland is part of the native range. Olive trees ususally are planted in southern Switzerland in gardens and sometimes escape into the wild. Most likely it arrived by natural dispersal from the south. I'd consider the alien status as "Questionable".

Kostas Tsiamis
[Closing post]
1/10/2017 - 1:55 PM

EB Member: I'd consider the alien status as "Questionable".

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