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Intl. J. of Molecular Zoology, 2012, Vol.2, No.2, 13
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Figure 6 The effect of gamma irradiation alone or in combination with acetone or petroleum ether Bamoof extract on Growth index,
Survival index and Assimilation index to the nutritional profile of
A. ipsilon
among F
1
progeny
of combination treatment as compare to the untreated
control (El-Shall and Mohamed, 2005).
The post-embryonic developmental period of F
1
progeny was delayed, resulting in a reduction in the
growth index, which exhibited a negative relationship
with the gamma dosage only and when it combination
with the plant extract.
The gross energy (or heat of combustion) of a
substance is defined as the energy liberated as heat
when the substance is completely oxidized to CO
2
and
H
2
O (Kleiber, 1961; Tyler, 1964).
The influence of the two substerilizing doses (100 and
150 Gy) on the dry matter nutritional profile, as a
function of the physiological response to irradiation
and/or irradiation combined with plant extract stress
among F
1
progeny was studied in our previous papers.
Table 1 indicates the effects of Barnoof extract alone
on the energy budget of the F
1
progeny of
A. ipsilon
.
The gross energy in food balance (digested) of F
1
progeny showed a negative correlation with plant
extract, which resulted in a significant reduction in
energy in food balance (digested) up to the levels
68.98%, 71.03% and 72.38% from the control at 0%,
1.5% and 3% respectively to the acetone extract and
81.22%, 78.50% and 74.15% at 0%, 1.5% and 3%
respectively of petroleum ether extract among F
1
progeny, this decrease might be attributed to the lowest
food intake by treated the larvae with the plant extract,
whereas, the plant extract Barnoof combined with 100 Gy
of gamma radiation (Table 2) increased the gross
energy in food digested (food balance) to 85.99%,
87.62% and 88.71% from the control treatment in case
of acetone extract (0%, 1.5% and 3%) respectively.
Then increased to 82.45%, 87.21% and 90.88% from
the control treatment in case of the petroleum ether
extract (0%, 1.5% and 3%) respectively, except, at the
100 Gy treatment only still significantly decrease to
69.12% from the control treatment. The gross energy
in food digested (food balance) was significantly
decreased to 66.80 % from the control treatment at the
dose level 150 Gy (Table 3). The dose level 150 Gy
combined with the acetone extract (Table 3 also)
decreased the gross energy in food digested (food
balance) to 84.76% and 66.53% from the control
treatment in 1.5% and 3% acetone Barnoof extract
(combined with the dose level 150 Gy). Furthermore,
the combination between the dose level 150 Gy and
the concentration 3% petroleum ether extract treatment
significantly decrease the gross energy in food
digested to 79.91% from the control treatment. Then,
the great effect was in the higher dose (150 Gy)
combined with the higher concentration (3%) of plant
extract Barnoof (Mohamed, 2004; El-Nagar et al.,
2004; Mohamed et al., 2004; El-shall and Mohamed,
2005; Mohamed, 2006).