Studies on the effect of low temperature on the duration of embryonic life, hatching percentage, wet weight, water and glucose levels and acid phosphatase activity during embryogenesis in eggs of Corcyra cephalonica (Stainton) (Lepidoptera: Pyralidae)
N., C., Ram, T., Maurya, S., Mishra, R. (2010). Studies on the effect of low temperature on the duration of embryonic life, hatching percentage, wet weight, water and glucose levels and acid phosphatase activity during embryogenesis in eggs of Corcyra cephalonica (Stainton) (Lepidoptera: Pyralidae). EKB Journal Management System, 3(1), 187-197. doi: 10.21608/eajbsa.2010.15254
Chaubey S. N.; Tarkeshwar Ram; Shiv Poojan Maurya; Radheshyam Mishra. "Studies on the effect of low temperature on the duration of embryonic life, hatching percentage, wet weight, water and glucose levels and acid phosphatase activity during embryogenesis in eggs of Corcyra cephalonica (Stainton) (Lepidoptera: Pyralidae)". EKB Journal Management System, 3, 1, 2010, 187-197. doi: 10.21608/eajbsa.2010.15254
N., C., Ram, T., Maurya, S., Mishra, R. (2010). 'Studies on the effect of low temperature on the duration of embryonic life, hatching percentage, wet weight, water and glucose levels and acid phosphatase activity during embryogenesis in eggs of Corcyra cephalonica (Stainton) (Lepidoptera: Pyralidae)', EKB Journal Management System, 3(1), pp. 187-197. doi: 10.21608/eajbsa.2010.15254
N., C., Ram, T., Maurya, S., Mishra, R. Studies on the effect of low temperature on the duration of embryonic life, hatching percentage, wet weight, water and glucose levels and acid phosphatase activity during embryogenesis in eggs of Corcyra cephalonica (Stainton) (Lepidoptera: Pyralidae). EKB Journal Management System, 2010; 3(1): 187-197. doi: 10.21608/eajbsa.2010.15254

Studies on the effect of low temperature on the duration of embryonic life, hatching percentage, wet weight, water and glucose levels and acid phosphatase activity during embryogenesis in eggs of Corcyra cephalonica (Stainton) (Lepidoptera: Pyralidae)

Egyptian Academic Journal of Biological Sciences. A, Entomology
Article 17, Volume 3, Issue 1, June 2010, Page 187-197  XML PDF (91.18 K)
Document Type: Original Article
DOI: 10.21608/eajbsa.2010.15254
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Authors
Chaubey S. N.1; Tarkeshwar Ram2; Shiv Poojan Maurya2; Radheshyam Mishra2
1Insect Biochemistry Lab, Department of Zoology,S.D.J.P.G. College Chandeshwar Azamgarh, (U.P.)-276128, INDIA
2Insect Biochemistry Lab, Department of Zoology,S.D.J.P.G. College Chandeshwar Azamgarh,(U.P.)-276128, INDIA
Abstract
Laboratory experiments were performed to study the effects of low temperature on the duration of embryonic life, hatching percentage, wet weight, water content, glucose levels and acid phosphatase activity during embryonic development in the rice moth, Corcyra cephalonica. A significant increase occurred in the duration of embryonic life with decreasing temperature. Lowering the temperature from 28ºC to 24ºC did not affect the hatching percentage of eggs. However, when incubated at 28ºC, wet weight and water content of eggs significantly decreased with advancing egg age up to 40-48 h and 32-40 h respectively. Moreover, the rate of decrease in wet weight and water content lowered with decreasing incubation temperature. A significant decrease in glucose levels (mg/egg and mg/mg wet weight of egg sample) occurred during the initial stages followed by an increase, during the later stages of embryogenesis in eggs incubated at all three temperatures, although the levels of variation decreased with decreasing temperature. Acid phosphatase activity showed a more or less, sigmoid pattern of change, with a lowering rate of increase, corresponding to decreasing incubation temperature.
Keywords
acid phosphatase; Corcyra; duration of embryonic life; glucose; hatching percentage; Temperature; water content; wet weight
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