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

Table 6

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

Parameter	Young	Mature	Senescent	F 2,12	P
GR (mg/day)	26.14±0.01^a	28.15±0.24^b	21.36±0.01^c	616.978	0.0001
CR (mg/day)	216.44±0.03^a	226.40±1.51^b	202.46±0.04^c	189.695	0.0001
RGR (mg/day)	0.41±0.00^a	0.35±0.01^b	0.34±0.00^b	41.214	0.0001
CI (mg/day)	3.37±0.00^a	2.79±0.02^b	3.26±0.00^c	526.015	0.0001
AD (%)	67.09±0.01^a	67.60±0.06^a	65.49±0.00^b	69.189	0.0001
ECI (%)	12.07±0.00^a	12.44±0.21^a	10.55±0.00^b	65.861	0.0001
ECD (%)	18.00±0.00^a	18.62±0.32^a	16.11±0.00^b	48.374	0.0001
LS (%)	89.81±2.02^a	90.02±0.21^a	82.64±3.25^b	5.234	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.