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Abdel - Salam,, A., Ghanim, A., El – Serafi, H., El-Heneidy, A., El-Sherbeni, M. (2009). THERMAL REQUIRMENTS, BIOLOGICAL AND LIFE TABLE PARAMETERS OF Exochomus nigromaculatus (GOEZE) (Coleoptera: Coccinellidae) REARED ON THREE APHID SPECIES.. Journal of Plant Protection and Pathology, 34(7), 8263-8282. doi: 10.21608/jppp.2009.217235
A. H. Abdel - Salam,; A. A. Ghanim; Hala A. K. El – Serafi; A. H. El-Heneidy; Mervat K. El-Sherbeni. "THERMAL REQUIRMENTS, BIOLOGICAL AND LIFE TABLE PARAMETERS OF Exochomus nigromaculatus (GOEZE) (Coleoptera: Coccinellidae) REARED ON THREE APHID SPECIES.". Journal of Plant Protection and Pathology, 34, 7, 2009, 8263-8282. doi: 10.21608/jppp.2009.217235
Abdel - Salam,, A., Ghanim, A., El – Serafi, H., El-Heneidy, A., El-Sherbeni, M. (2009). 'THERMAL REQUIRMENTS, BIOLOGICAL AND LIFE TABLE PARAMETERS OF Exochomus nigromaculatus (GOEZE) (Coleoptera: Coccinellidae) REARED ON THREE APHID SPECIES.', Journal of Plant Protection and Pathology, 34(7), pp. 8263-8282. doi: 10.21608/jppp.2009.217235
Abdel - Salam,, A., Ghanim, A., El – Serafi, H., El-Heneidy, A., El-Sherbeni, M. THERMAL REQUIRMENTS, BIOLOGICAL AND LIFE TABLE PARAMETERS OF Exochomus nigromaculatus (GOEZE) (Coleoptera: Coccinellidae) REARED ON THREE APHID SPECIES.. Journal of Plant Protection and Pathology, 2009; 34(7): 8263-8282. doi: 10.21608/jppp.2009.217235

THERMAL REQUIRMENTS, BIOLOGICAL AND LIFE TABLE PARAMETERS OF Exochomus nigromaculatus (GOEZE) (Coleoptera: Coccinellidae) REARED ON THREE APHID SPECIES.

Article 10, Volume 34, Issue 7, July 2009, Page 8263-8282  XML PDF (845.14 K)
Document Type: Original Article
DOI: 10.21608/jppp.2009.217235
Authors
A. H. Abdel - Salam,1; A. A. Ghanim1; Hala A. K. El – Serafi1; A. H. El-Heneidy2; Mervat K. El-Sherbeni2
1Economic Entomology Department, Faculty of Agriculture, Mansoura University, Mansoura 35516, EGYPT
2Plant Protection Research Institute, Agricultural Research Center, Ministry of Agriculture, Giza, Egypt.
Abstract
 
Developmental time and rate of immature stages, growth index, survival percentage, longevity, fecundity, and life table parameters of Exochomus nigromaculatus (Goeze) when reared on Aphis gossypii, Aphis craccivora, and Myzus persicae were studied at three constant temperatures (20, 24, and 28oC). The relationship between developmental rate of each stage and tested temperatures was also regressed.
There were significant variations in total developmental time of immature stages of the predator (male and female) among the three tested temperatures when the predators reared on the three studied preys.Meanwhile, there were no significant variations among the three aphid species at the same temperature. Growth index and developmental rate of E. nigromaculatus male were higher at 28oC than 20 and 24oC when reared on the tested aphid species. Survival percentage of immature stages when reared at 24 and 28oC was higher (100%) on M. persicae than on A. gossypii and A. crccivora (90%).  Exochomus nigromaculatus male and femalerequired 263.16 DD to complete their development from egg to adult male when reared on when it was reared on A. gossypii, A. craccivora, and M. persicae. There were no significant differences in pre-ovipositional period among the three tested temperatures. In addition, there were significant variations between inter-oviposition, oviposition, and total longevity when the predator was reared at the three tested temperatures. Male longevity was significantly shorter at 28oC than at 20oC and 24oC which fed on the same prey. Fecundity rate was significantly higher at 28oC than at 20oC and 24oC, when fed on the same prey. The mean generation time (T) and doubling time (DT) were shorter at 28oC than at 20oC and 24oC when fed on the same prey at 28oC. Generally, the value of gross reproductive rate (GRR), the net reproduction rate (Ro), the intrinsic rate of increase (rm), the finite rate of increase (λ) were higher at 28oC than at 20oC and 24oC.
Keywords
Exochomus nigromaculatus; thermal requirements; biological characteristic; life table; Aphis gossypii; Aphis craccivora; Myzus persicae
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