Publications by authors named "D A Papachristos"

The European Commission requested the EFSA Panel on Plant Health to prepare and deliver risk assessments for commodities listed in Commission Implementing Regulation (EU) 2018/2019 as 'high-risk plants, plant products and other objects'. Taking into account the available scientific information, including the technical information provided by the applicant country, this Scientific Opinion covers the plant health risks posed by the following commodities: , and graftwood, bare-root plants and rooted plants in pots up to 7 years old imported into the EU from the UK. A list of pests potentially associated with the commodities was compiled.

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Pest categorisation of .

EFSA J

January 2025

Following the commodity risk assessment of plants grafted on from China, in which (Hemiptera: Diaspididae) was identified as a pest of possible concern, the European Commission requested the EFSA Panel on Plant Health to conduct a pest categorisation of for the territory of the European Union (EU). The origin of the scale insect is uncertain, with either South America or eastern Asia suggested as the native range. The geographic distribution of the species includes many countries of the continents of Africa, North and South America, Asia and Oceania.

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Pest categorisation of .

EFSA J

January 2025

Following the commodity risk assessment of and plants for planting from Türkiye, in which (Hemiptera: Diaspididae), the pistachio oyster scale or yellow pistachio scale, was identified as a pest of possible concern, the EFSA Panel on Plant Health performed a pest categorisation for the territory of the European Union (EU). is reported as a polyphagous pest which, however, mainly affects plants of the genus Originating from Asia, it is widely distributed in pistachio producing countries of Central, South and West Asia. Within the EU, the pest has been reported from Cyprus and Greece.

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Invasive mosquito species, such as , pose significant threats to both ecosystems and public health due to their role in transmitting diseases, such as dengue, Zika, and chikungunya. The Sterile Insect Technique (SIT) is a promising vector control strategy aimed at reducing mosquito populations by releasing sterile males to mate with wild females and reduce their reproduction rates. In this study, we employed the captive cohort method, which assesses the remaining longevity of randomly caught released individuals, to assess the longevity and frailty dynamics of sterile and non-sterile males.

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Article Synopsis
  • - The European Commission tasked the EFSA Panel on Plant Health with assessing the risk of pests related to unrooted cuttings produced in Costa Rica, focusing on both regulated and non-regulated pests.
  • - A total of 22 regulated pest species were identified, including various viruses affecting plants, and were analyzed for potential entry risks and the effectiveness of Costa Rica's risk mitigation strategies.
  • - The evaluation concluded that while the risk of pest contamination varied among those studied, there is a high likelihood (95% certainty) that most unrooted cuttings would be free of the tomato spotted wilt virus, estimating that 9,927 to 10,000 out of 10,000 bags would not carry this pest. *
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