The performance parameters of Sopdoptera littoralis (boisd.)(lepidoptera: noctuidae) fed on cotton leaves grown in enriched CO₂ atmosphere [electronic resource].
- p.197-205.
Includes references.
Data obtained from the insect performance parameters of S. littoralis (Boisd.) fed on cotton plant leaves Gossypium barbadens Giza 85 (Malvaceae) grown at ambient (350 ppm) and enriched (700 ppm) CO₂ regimes showed that: The mean larval duration of the 3rd and 5th instars showed no significant differences between the two CO₂ regimes; the mean total percentage survival of the whole larval instars (1st instar till prepupa) significantly decreased when larvae fed on enriched CO₂ cotton leaves. Highly significant differences between means of the prepupal fresh weight, pupal fresh weight and pupal duration were obtained. However, insignificant differences in the percentage pupation were recorded. A significant differences between mean percentage of adult emergence were obtained with significant differences between means sex ratio, male and female longevities and incubation period of the eggs. On the other hand, a significant difference between mean values of the preoviposition period, number of eggs deposited, number of hatching eggs, percentage egg fertility and percentage egg mortality were observed. Thus the reproductive capacity could be influenced by the increase in future enriched CO₂ environment and also high quality food might be even less avaliable.
Spodoptera littoralis--Feeding and feeds. Cotton--Growth. Leaves Carbon dioxide.