Effect of Temperature on the Biology and Predatory Potential, of Harmonia Dimidiata (Fab.) (Coleoptera: Coccinellidae) Feeding on Myzus Persicae (Sulzer) (Hemiptera: Aphididae) Aphid

Effect of Temperature on the Biology and Predatory Potential, of Harmonia Dimidiata (Fab.) (Coleoptera: Coccinellidae) Feeding on Myzus Persicae (Sulzer) (Hemiptera: Aphididae) Aphid



Javed Khan, Ehsan ul Haq, Tariq Mehmood, Ammara Blouch, Muhammad Ather Rafi, Javed Fateh



The influence of five constant temperatures i.e 16±1°C, 20±1°C, 24±1°C,
28 ±1°C and 32 ±1 ˚C was investigated on the biology and predatory
potential of Coccinellid beetle, Harmonia dimidiata (Fab.),
(Coccinellidae: Coleoptera), feeding on Myzus persicae aphid. The
results revealed that temperature has significant effect on the
development time and with increasing temperature, the development time
may significantly decrease. Maximum duration was observed at low
temperatures and minimum at high temperature level for egg incubation
period, larvae, pupa and egg to adult emergence. The number of eggs per
female beetle was maximum (656.8±7.08) at 24 ± 1˚C and minimum
(184.6±5.16) at 28 ± 1˚C. The results further indicate that at high
temperature level 32 ± 1˚C the female could not produce eggs. The
predatory potential of larvae, male and female beetle was maximum
827.7±13.39, 14183.0±543.76 and 15375.0±549.98 aphids at 24 ± 1˚C. The
results indicate that temperature has profound effect on fecundity and
predatory potential as well as development of H. dimidiata. The optimum
rearing temperature for this Coccinellid predator was found to be 24
±1°C followed by 20 ±1°C. It has high potential against M. pericae and
thus can be utilized as part of integrated pest management program for
the management of this economically important aphid pest. 



10.22161/ijeab/1.3.5



http://ijeab.com/upload_document/issue_files/5 IJEAB-AUG-2016-19-Effect of Temperature on the Biology and Predatory Potential, of Harmonia Dimidiata (Fab.) (Coleoptera_ Coccinellidae) Feeding on Myzus Persicae (Sulzer) (Hemiptera_ Aphididae) Aphid.pdf



http://ijeab.com/submit-paper/

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