Another reason why our third metazoan do not exhibit a realistic pattern (not shown here) is because its prey either did not succeed or because the exit of diapause was at a time of the year where no prey were presents. This is one of the drawback of using only internal processes (e.g. C:N thresholds) to control the diapause. The lipid accumulation window does work for the entry into diapause and allow to set the baseline of how long an individual/population can stay into diapause. But this does not necessary mean that they will spend all that time into diapause. Even though there is no consensus on the parameter that triggers the start and stop of the diapause, it has been observed for special low sea-ice concentration years such as 2012-2013, population of Calanus species exiting diapause in early/mid winter to graze on an unusual relatively high winter production (Dezutter et al. in Press). This indicates that there is a need to take into account external cues to trigger the exit of diapause. Nevertheless with two metazoan functional species synchronised with their prey, the implementation of the diapause trait has an impact on the trophic food web of the model.