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Intl. J. of Molecular Zoology, 2012, Vol.2, No.2, 13
-
22
http://ijmz.sophiapublisher.com
13
Research Report Open Access
Bioenergetics Growth Model for the Effect of Gamma Irradiation and/or
Plant Extract Barnoof on the Progeny of Black Cutworm,
Agrotis Ipsilon
(Hufngel)
Hussein F. Mohamed
Biological Applications Department, Nuclear Research Center, Atomic Energy Authority, Cairo, Egypt
Corresponding authors email:
husseinmohamed29@yahoo.com
International Journal of Molecular Zoology, 2012, Vol.2, No.2 doi: 10.5376/ijmz.2012.02.0002
Received: 19 Apr., 2012
Accepted: 23 Apr., 2012
Published: 11 May, 2012
This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction
in any medium, provided the original work is properly cited.
Preferred citation for this article:
Mohamed, 2012, Bioenergetics Growth Model for the Effect of Gamma Irradiation and/Or Plant Extract Barnoof on the Progeny of Black Cutworm,
Agrotis
Ipsilon
(Hufngel), International Journal of Molecular Zoology, Vol.2, No.2 13
-
22 (doi: 10.5376/ijmz.2012.02.0002)
Abstract
In this study, we investigate the effects of two substerilizing doses 100 and 150 Gray (Gy) of gamma irradiation applied to
full grown pupae of the Black cutworm,
Agrotis ipsilon
(Hufngel), and/or plant extract,
Conyza dioscorides
(Barnoof) with two different
solvents and applied to the resulting 5
th
~6
th
instar larvae in F
1
generation on certain biological aspects and the energy budget.
Data revealed that gamma irradiation when combined with the extract in most treatments significantly higher than the control of
reproduction at all treatments (doses and concentrations).
Most of the treatments increased the values of developmental/day, larval duration and % survival were measured. These indices in the
F
1
progeny as compare to the control treatment, except, at the % survival it was decreased at all treatments. These values were more
obvious in combination treatments compared to gamma irradiation or plant extract treatments each of them alone.
The coefficient of metabolizable energy (C.M.E.) not affected at all treatments. The efficiency of storage of ingested energy
[E.S.I.(E)] and the efficiency of storage of metabolizable energy [E.S.M.(E)] were between increasing and decreasing when the F
1
progeny treated with plant extract alone or combined with the dose 100 Gy while it were significantly increased at all treatments
when the dose 150 Gy combined with the plant extract. The results obtained were discussed in terms of their implications for the best
substerilizing dose for the irradiation of parental male pupae of
A. ipsilon
combined with the dose 150 Gy.
Keywords
Gamma radiation;
Agrotis ipsilon
; Plant extract; Reproductive potential; Bioenergetics
Introduction
Among the lepidopterous species, the Black cutworm,
Agrotis ipsilon
(Hufnagel) is one of the most severe
insect pests in Egypt. The release of sterile males for
the control of natural insect populations has not had
great success with species of Lepidopteron, because
they are highly resistant to irradiation (North and Holt,
1968 and LaChance et al., 1973) Several reports on
Lepidoptera stated a mounting success in the use of
gamma radiation at low doses to face a successful
inherited sterility (Proverbs et al., 1975; Carpenter et
al., 1987).
Several plant extracts and/or their lonely active
compounds have demonstrated extensive potential as
acute or chronic insecticides, insect growth regulators,
or antifeedants against a Varity of insect species (e.g.
Beckage et al
.,
1988, Jilani and Saxema, 1990). Such
feeding deterrence and/or growth regulation may be
correlated with the magnitude of biochemical changes
in the test species.
However, the combined effects of gamma radiation
and bioinsecticides on Lepidopterous insects were
studied by several authors, Sallam et al (1991);
Mohamed (2004); Mohamed et al (2004); EL-Nagar et
al (2004); El-shall and Mohamed (2005) and Mohamed
(2006). El-Nagar (1990) found that the inherited
sterility of the
spodoptera littoralis
was successfully
achieved when full grown pupae were substerilized
with 10 K, 15 K and 20 K rad of gamma radiation.