Host plants shifting affects the biology and biochemistry of spodoptera littoralis (boisd.) (lepidoptera: noctuidae)
Adham, F., Rashad, E., Shoukry, I., Nasr, E. (2009). Host plants shifting affects the biology and biochemistry of spodoptera littoralis (boisd.) (lepidoptera: noctuidae). EKB Journal Management System, 2(1), 63-71. doi: 10.21608/eajbsa.2009.15454
Fatma K. Adham; Eman M. Rashad; Ibrahim F. Shoukry; Enas E. Nasr. "Host plants shifting affects the biology and biochemistry of spodoptera littoralis (boisd.) (lepidoptera: noctuidae)". EKB Journal Management System, 2, 1, 2009, 63-71. doi: 10.21608/eajbsa.2009.15454
Adham, F., Rashad, E., Shoukry, I., Nasr, E. (2009). 'Host plants shifting affects the biology and biochemistry of spodoptera littoralis (boisd.) (lepidoptera: noctuidae)', EKB Journal Management System, 2(1), pp. 63-71. doi: 10.21608/eajbsa.2009.15454
Adham, F., Rashad, E., Shoukry, I., Nasr, E. Host plants shifting affects the biology and biochemistry of spodoptera littoralis (boisd.) (lepidoptera: noctuidae). EKB Journal Management System, 2009; 2(1): 63-71. doi: 10.21608/eajbsa.2009.15454

Host plants shifting affects the biology and biochemistry of spodoptera littoralis (boisd.) (lepidoptera: noctuidae)

Egyptian Academic Journal of Biological Sciences. A, Entomology
Article 8, Volume 2, Issue 1, June 2009, Page 63-71  XML PDF (454.13 K)
Document Type: Original Article
DOI: 10.21608/eajbsa.2009.15454
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Authors
Fatma K. Adham1; Eman M. Rashad2; Ibrahim F. Shoukry2; Enas E. Nasr2
1Department of Entomology, Faculty of Science, Cairo University
2Department of Zoology, Faculty of Science, Zagazig University
Abstract
The effect of shifting Spodoptera littoralis larvae from a host plant to another pointed out that pupal weight, growth index, female longevity and fecundity were affected. Host plants considered were okra, tomato and castor oil plants. Larvae were reared for three successive generations under laboratory conditions (25-30˚C, 70%R.H. and 12D:12L) on each of the three chosen plants, and then shifted to each of the other two hosts.
            Larvae reared continuously on castor oil leaves, okra and tomato leaves then shifted to either one of the other plants induced a highly significant decrease in the mean pupal weight. Shifting from the favourable host (castor oil leaves) to either okra or tomato leaves, highly significantly decrease the growth rate and the mean number of eggs deposited by the female. Shifting from castor oil leaves to either okra or tomato induced insignificant increase in the female longevity. Phytochemical analysis showed that, castor oil leaves, possess a high value of total carbohydrates, total proteins and nitrogen meanwhile the phenolic compounds were present at a low value level. Biochemical analysis showed that both essential and non essential amino acid were higher in the hemolymph of the last larval instars of S. littoralis reared on castor oil leaves. A noticeable decrement was detected in the amino acid level of larvae fed on okra leaves followed by more decrement in larvae fed on tomato leaves.
Keywords
Spodopter littoralis –Host plants – Fecundity – Hemolymph – Amino acid; Phytochemical analysis
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