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Intl. J. of Molecular Zoology, 2012, Vol.2, No.2, 13
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22
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14
The present study was undertaken to elucidate the
energy budget of 5
th
~
6
th
instar larvae of the
Agrotis
ipsilon
treated with plant extract Barnoof which
resulting from irradiated parental male full grown
pupae with the two substerilizing doses 100 Gy or 150 Gy,
i.e. energy budget of F
1
progeny. Energy budget is
useful in understanding the basic nutritional ecology,
with sufficient comparisons among various individuals,
species and population, thus indicating the performance
of insects in terms of rates of production and food
consumption (Ananthakrishnan, 1994).
1 Results and Discussion
The reproductive behavior of
A. ipsilon
treated as full
grown male pupae was observed among P
1
and F
1
generation (Figure 1). The adverse effect of irradiation
on the reproductive potential was found to be greater
for females than for males, these results agreement
with Knipling (1970), Carpenter
et al (1986) and
Mohamed (2004), who mentioned that the females
were more radiosensitive than males as determined in
the reduction in fecundity and egg viability.
Figure 1 Effect of gamma irradiation of parental male pupae on
reproduction among P
1
and F
1
The effect of plant extract Barnoof on the reproductive
behavior among F
1
generation descendant of P
1
(N♂
×
N♀) was observed in Figure 2, which shows
that the adverse effect of plant extract Barnoof on the
reproductive potential was found to be greater for
females than for males when F
1
progeny treated with
acetone extract at all treatments but it was not among
F
1
progeny treated with petroleum ether extract, while
sterility was greater for females than for males at the
treatments 1.5% and 3% petroleum ether extract. The
effect of plant extract Barnoof applied to F
1
progeny
descendant of irradiated parental male pupae with the
dose 100 Gy on reproduction of
A. ipsilon
was shown
in Figure 3.The data indicate also the adverse effect of
the combination between irradiation and plant extract
on the reproductive potential was found to be greater
for males. These results agreement with EL-Naggar
et al (2004), Mohamed (2004) and El-shall and
Mohamed (2005).
Figure 2 Effect of plant extract Barnoof on reproduction among
F
1
generations of
A. ipsilon
adults descendant of P
1
(NMXNF)
The effect of plant extract Barnoof applied among F
1
progeny descendant of irradiated parental male pupae
with the dose 150 Gy on reproduction of
A. ipsilon
was shown in Figure 4. Data shows a Slide affect in
case of acetone extract but found the adverse effect of
the combination between irradiation and plant extract
on the reproductive potential greater for females than
for males among the petroleum ether extract
treatments, this agreement with the previous authors.
Originally, the radiosensitivity of male
A. ipsilon
regarding inherited sterility was assessed with revere
to the combination between 100 and 150 Gy of
gamma radiation and plant extract Barnoof among F
1
progeny. The male moth descendant of irradiated
parental male pupae were found to be better
candidates for producing more inherited sterility
among F
1
progeny (Figure 3; Figure 4). It was
essential to study the F
1
viability in relation to growth,
food utilization and energy efficiencies of the F
1
larval
stage, which might reflect the behavioral potency of
F
1
adults.