Effect of Magnetic Power and Radiant Compound on Some Biological and Biochemical Aspects of Earias insulana (Boisduval) (Lep.: Noctuidae )

Abstract

Under laboratory conditions, the spiny bollworm, Earias insulana (Boisd.) pupal stage of laboratory strain were exposed to three magnetic levels (2.0, 10.0 & 24 mt) and half recommended compound of radiant, to study some aspects of the pest act in biological and biochemical assays as affected by the treatments used.The results showed that the exposed of one-day old pupae for the three MFs and Radiant (compound) elongated the pupal duration of E .insulana compared with control. The pupal durations were 9.6 , 12.6and 11.3 days/ pupae when exposed to three magnetic levels (2.0, 10.0 & 24.0 mt), respectively, and 12.6 days/ pupae with Radiant, compared with 8.3 days in control. The adults' emergence percentages were decreased to 89, 86, 77.0 and 67 % for three magnetic fields (MFs) and Radiant, respectively, compared with 98% for control.Data obtained of E. insulana adult resulted from pupal stage treated with MFs or Radiant, revealed that increasing in pre-oviposition and post-oviposition period in the all treatments used; but the vice direction happened with oviposition period. It were 9.3, 7.3 5.6 and 8.2 compared with 12.5 days in control.At the same times, the total eggs laid /female and hatchability percentages in adults resulted from all treatments were highly significantly affected compared with the untreated adults. These data indicated that the high decreased in number of eggs laid by females was estimated by 116.0, 79.9 and 132.0eggs, when exposed to magnetic power (MF2 &3) (10.0 & 24.0 mt), and radiant, respectively, compared to 216.0 eggs in control. In addition to the above, when sequence treatment adult resulted from pupal stage treated with 10.0mt (MF1) to a same power magnetic or fed on sequence fed on half recommend radiant cussed high reduction in number of eggs laid by females approximately from 2 to 4 times than control. some biochemical analyzes were performed to determine the som biochemical effect of the magnetic field on adults of E. insulana. The results showed high decreased estimated in levels of some key biochemical such as total proteins, total lipid and total carbohydrates contents that may be reflect the decrease in activities, also led to reduction in total eggs laid and decreasing in longevity adults.

Comparison between Gamma Rays and Magnetic Flux Effects on Biological and Life Table Assays of Earias insulan (Boisd.) Eggs

“…Latent effect of magnetic flux on E. insulana moth stage treated as 1-day old egg. Matar, et al (2018) showed that the adult stage of E. insulana exposed as pupal stage to three magnetic levels (2.0, 10.0 & 24 mt) were affected by increasing in pre-oviposition and post-oviposition periods in all treatments used; but the vice direction happened with oviposition period. Table (5) cleared that normal no.…”

“…Moreover, Kandil, et al (2019) indicated that there was a significant negative effect on the reproductive process and sometimes leads to the failure of the reproduction process when the adults of P. gossypiella exposed to a magnetic field of 14&18 mlt. Also, Matar, et al (2018), stated that total eggs laid /female had a high decreasing in the number to 116.0, 79.9 and 132.0 eggs, when exposed to magnetic power (2.0, 10.0 & 24 mt), respectively, compared to 216.0 eggs in untreated.…”

“…Also, Kandil, et al (2018) found that when adult stage field strain E. insulana were exposed to magnetic fields (28.6 mt) caused increasing in different immature stages resulted. Matar, et al (2018) showed that when exposed of E. insulana pupal stage (1-day old pupae) to three magnetic levels (2.0, 10.0 & 24 mt) caused elongation in pupal duration and high reduction in adult emergence. Table (3).…”