Sublethal Effects of Malathion on Biology and Population Growth of Khapra Beetle, Trogoderma granarium Everts (Coleoptera: Dermestidae)
S., M., H., H., Zinhoum, R. (2020). Sublethal Effects of Malathion on Biology and Population Growth of Khapra Beetle, Trogoderma granarium Everts (Coleoptera: Dermestidae). EKB Journal Management System, 13(3), 57-72. doi: 10.21608/eajbsa.2020.102086
Mokbel, E.M. S.; Hussain, H. B. H.; Rasha, A. Zinhoum. "Sublethal Effects of Malathion on Biology and Population Growth of Khapra Beetle, Trogoderma granarium Everts (Coleoptera: Dermestidae)". EKB Journal Management System, 13, 3, 2020, 57-72. doi: 10.21608/eajbsa.2020.102086
S., M., H., H., Zinhoum, R. (2020). 'Sublethal Effects of Malathion on Biology and Population Growth of Khapra Beetle, Trogoderma granarium Everts (Coleoptera: Dermestidae)', EKB Journal Management System, 13(3), pp. 57-72. doi: 10.21608/eajbsa.2020.102086
S., M., H., H., Zinhoum, R. Sublethal Effects of Malathion on Biology and Population Growth of Khapra Beetle, Trogoderma granarium Everts (Coleoptera: Dermestidae). EKB Journal Management System, 2020; 13(3): 57-72. doi: 10.21608/eajbsa.2020.102086

Sublethal Effects of Malathion on Biology and Population Growth of Khapra Beetle, Trogoderma granarium Everts (Coleoptera: Dermestidae)

Egyptian Academic Journal of Biological Sciences. A, Entomology
Article 6, Volume 13, Issue 3, September 2020, Page 57-72  XML PDF (619.7 K)
Document Type: Original Article
DOI: 10.21608/eajbsa.2020.102086
View on SCiNiTO View on SCiNiTO
Authors
Mokbel, E.M. S.1; Hussain, H. B. H.2; Rasha, A. Zinhoum2
1Central Agricultural Pesticides Laboratory, Agricultural Research Center, 12618 Giza, Egypt
2Stored Product Insects Dept., Plant Protection Research Institute, A.R.C., Dokki, Giza, Egypt
Abstract
Khapra beetle, Trogoderma granarium Everts is a serious pest that affects stored grains and oilseeds. The current work was carried out to investigate the effect of malathion sublethal concentrations (LC10 and LC40) exposed to first and fourth larval instars on biological aspects and population growth of T. granarium. Results indicated that exposure of 1-st instar to either LC10 or LC40 had a destructive effect and treated larvae failed to complete their larval stage. While 4-th instar exposed to the same sublethal concentrations completed their life cycle with considerable impacts on biological aspects and life table parameters. Treatments increased the number of instars molting reaching seven or eightinstars. In contrast, larval, pre-adult, and total longevity periods were decreased in treatments compared with control. Concerning life table parameters such as net reproductive rate (R0), intrinsic rates of increase (r), finite rate (λ), fecundity and mean generation time (T) were decreased compared to control.  The current study clarified thatsublethal concentrations of malathion induce strong adverse effects and suppress the population growth of T. granarium. Our results would be useful to assess the overall effects of malathion on T. granarium and can contribute effectively in pest management.
Keywords
Khapra beetle; malathion; sublethal biology; larval instars; life table parameters
Statistics
Article View: 441
PDF Download: 507