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

Table 7

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

Parameter	Young	Mature	Senescent	F 2,12	P
GR (mg/day)	20.20±0.015^a	21.41±0.27^b	19.82±0.01^c	28.443	0.0001
CR (mg/day)	158.86±0.02^a	166.10±0.63^b	153.15±0.02^c	311.005	0.0001
RGR (mg/day)	0.13±0.00	0.12±0.01^a	0.14±0.00^b	6.846	0.05
CI (mg/day)	0.97±0.00^a	0.98±0.02^a	1.08±0.00^b	15.203	0.001
AD (%)	45.81±0.02^a	45.12±0.21^a	42.39±0.01^b	56.450	0.0001
ECI (%)	13.47±0.00^a	12.25±0.13^b	12.94±0.00^c	59.537	0.0001
ECD (%)	29.44±0.02^a	27.71±0.48^b	30.53±0.02^a	25.973	0.0001
LS (%)	86.97±2.80^a	86.58±0.38^a	79.57±1.97^b	5.121	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.