Call for tenders' details

Development of a mechanistic model to assess risks to honeybee colonies from exp...
Contracting authority:
European Food Safety Authority (EFSA)
TED publication date:
Time limit for receipt of tenders:
English (en)
Question details
Query based on EFSA technical report
In EFSA's report about the mechanistic model on risk assessment of pesticides, 2016 there is a figure presenting the development transition of summer and winter bees. (Fig.8, page 23). Should the arrows presenting the transitions on summer and the winter bees be the same or they should be different?
This figure aims at showing: 1) The main tasks that bees can perform within the colony and to be considered in the model, i.e. non-nursing, nursing and foraging; 2) Non-nursing in summer is mostly related to heating or cooling the nest whereas in winter it is mostly related to heating the nest; 3) There is flexible temporal polyethism for both summer and winter bees. The arrows presenting the transitions in summer and winter bees are the same because the figure aimed at showing that there is plasticity in tasks allocation, both in summer and winter bees. The figure does not aim at showing all possible scenarios which depend on conditions that need to be considered when developing the model.