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. 2023 Oct 19;21(10):e08107. doi: 10.2903/j.efsa.2023.8107

Table A.92.

Result report on EKE question 4c

Overview of the results of the Expert Knowledge Elicitation Question 4c
Parameter Survival rate of FCM in household waste going to incineration or anaerobic digestion
Stratification
Question Assuming infestation of cut roses at the beginning of the waste treatment with later larval stages and pupae. What is the proportion of FCM which will develop to an adult and escape the waste treatment (incineration or anaerobic digestion)?
Unit [Escape out of 10,000]
Results P1% P2.5% P5% P10% P16.7% P25% P33.3% P50% P66.7% P75% P83.3% P90% P95% P97.5% P99%
Elicited values 0 0
EKE results 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Fitted distribution Constant(0)
graphic file with name EFS2-21-e08107-g035.jpg graphic file with name EFS2-21-e08107-g033.jpg
Figure (a): Comparison of elicited and fitted values/density function to describe the remaining uncertainties of the parameter Figure (b): Cumulative distribution function (CDF) of the likelihood of the parameter
Summary of the evidence used for the evaluation
  • Literature on effects of waste treatments on insects, e.g. Soderstrom et al (1990), Ali Ahmed et al. (2007), Baughman et al. (2015), Love et al (2019)

  • Conditions of regular incineration/anaerobic digestion, esp. fermentation, heat treatment and exchange of atmosphere (higher CO2)

Main uncertainties
  • Effect of lower temperatures, duration and completeness of fermentation

  • Due to the closure of the process, it is considered as process with 100% mortality

Reasoning for a scenario which would lead to a reasonable high proportion The judgement on the upper limit considers that
  • Material is complete fermented or burned, same as low value

Reasoning for a scenario which would lead to a reasonable low proportion The judgement on the lower limit considers that
  • Regular procedure of incineration, or anaerobic digestion, incl. high temperatures, exchanged atmosphere, complete closure

  • Treatment is effective to kill the eggs, larvae and pupae; and/or inhibit escape

Fair estimate as judgement on the weighted evidence The judgement on the median considers that
  • Complete 100% mortality

Precision of the judgement as description of remaining uncertainties The judgement on the interquartile range considers that
  • No uncertainties

Experts Antoon LOOMANS, Panos MILONAS, Klara NICOVA, Stella PAPANASTASIOU, Giuseppe STANCANELLI, Hans‐Hermann THULKE
Facilitator/Reporter Olaf MOSBACH‐SCHULZ (facilitator)
Observers na
Date and place of the EKE Virtual meeting on 9 January 2023