Summary of the Express Pest Risk Analysis for Xylosandrus compactus (Eichhoff)

PRA area: Poland

Describe the endangered area: Palm Houses and greenhouses

Main conclusions

Xylosandrus compactus causes serious economic losses in crops in its native and new distributional range. Considering that it is a tropical species, it is not expected that pest will be able to survive in Poland. Therefore, potential impact of pest in PRA area should be lower then in its native range. The spread and population size will be limited by climatic conditions. The most of host plants are not present in Poland. Probably, there is a risk that pest may attack new local plant species.

Chemical phytosanitary measures are commonly used and the efficiency of them is on high level (more then 90%). Infected plants need to be destroy but this method is more labour-intensive and less efficient.

It is necessary to set the conditions at which pest can not survive (especially the temperature range). This knowledge will be used to choose the best eradication method.

Phytosanitary risk for the endangered area

(Individual ratings for likelihood of entry and establishment, and for magnitude of spread and impact are provided in thedocument)

High

Moderate

Low

Level of uncertainty of assessment

(see Q 18 for the justification of the rating. Individual ratings of uncertainty of entry, establishment, spread and impact are provided in the document)

High

Moderate

Low

Other recommendations

Summary of the Express Pest Risk Analysis for Zaprionus indianus

PRA area: Poland

Describe the endangered area:  fruit crops in protected conditions and orchards

Main conclusions

Zaprionus indianus is a species of small fruit fly. Larvae feed principally on decomposing fruits. It is not considered to attack unripe and undamaged fruit. The most likely way of entry is transmission with imported fruits.

Considering that Z. indianus is a tropical species, it is not expected that it will be able to survive and establish of permanent populations (the ephemeral populations are possible during the warmer, milder months) in PRA area.

Phytosanitary measures should be based on monitoring of Zaprionus indianus larvae occurrence in imported fruits, especially in warmer months and from pest native ranges.

Infected fruits should be destroyed for example by burning.

Phytosanitary risk for the endangered area

(Individual ratings for likelihood of entry and establishment, and for magnitude of spread and impact are provided in thedocument)

High

Moderate

Low

X

Level of uncertainty of assessment

(see Q 18 for the justification of the rating. Individual ratings of uncertainty of entry, establishment, spread and impact are provided in the document)

High

Moderate

X

Low

Other recommendations:

More reasearch of  Z. indianus biology and harmufullness