The Impact of Variation in Foliar Constituents of Sunflower on Development and Reproduction of Diacrisia casignetum Kollar (Lepidoptera: Arctiidae)

Table 2

Food utilization efficiency measures of first instar larva of D. casignetum reared on young, mature and senescent sunflower leaves.

Parameter	Young	Mature	Senescent	F 2,12	P
GR (mg/day)	0.06±0.00^a	0.08±0.02^b	0.04±0.00^c	9.859	0.01
CR (mg/day)	15.17±0.05^a	17.02±0.12^b	13.26±0.03^c	551.283	0.0001
RGR (mg/day)	0.38±0.02^a	0.32±0.01^b	0.31±0.03^b	8.234	0.01
CI (mg/day)	84.46±2.58^a	69.60±1.48^b	83.13±3.07^a	11.063	0.01
AD (%)	89.56±0.15	89.61±0.40	89.09±0.19	1.048	n.s.
ECI (%)	0.46±0.03^a	0.47±0.02^a	0.37±0.04^b	5.931	0.05
ECD (%)	0.51±0.04^a	0.52±0.03^a	0.42±0.04^b	5.892	0.05
LS (%)	98.26±0.97^a	98.29±0.93^a	92.66±1.89^b	5.834	0.05

Mean ± SE of five observations. Within the rows means followed by different letters are significantly different. Food utilization efficiency measures: GR: Growth rate, CR: Consumption rate, RGR: Relative growth rate, CI: Consumption index, AD: Approximate digestibility, ECI: Efficiency of conversion of ingested food, ECD: Efficiency of conversion of digested food, LS: Larval survivability.