Table 1 Relation between the number of chewing movements of mandibles and AE hits detected in the chewing phases of the larvae

Larva

Number of chewing movements n

Number of AE-generating chewing movements m

Ratio of AE-generating chewing movements m/n

Number of AE hits generated in chewing movements a

AE hits per AE-generating chewing movement a/m

Total analysis time T (s)

Chewing movements per second n/T