Table 1.

Calculations for indices for larval growth, development, and food digestibility.

Measuring indices	Formulation
Mean relative growth rate, MRGR	MRGR = (logW2−logW1)/t
Approximate digestibility (%), AD	AD = [(Q−F)/Q]∗100
Efficiency of conversion of ingested food (%), ECI	ECI = [(W2−W1)/Q]∗100
Efficiency of conversion of digested food (%), ECD	ECD = [(W2−W1)/(Q-F)]∗100

^∗Q, the diet consumption (mg); F, the frass excretion (mg); W₁, the initial larval wet mass (mg), W₂, the final larval wet body mass (mg); t, days from the initial to the final day (d).