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Biology and Predatory Potential of the Eleven Spotted Coccinellid Predator Coccinella undecimpunctata L. (Coleoptera: Coccinellidae) reared on two Aphid Species (Hemiptera: Aphididae) under Laboratory Conditions.
Annals of Agriculture science, Moshtohor • 2020
Publication Information
Authors
Hadeer S. A. Rashed, Adel A. Hafez, Fawzy F. Shalaby and Naglaa, F. Abd-Elhameid
Keywords
Coccinella undecimpunctata - Biology - Predatory potential – Aphis craccivora –Schizaphis
graminum.
Journal
Annals of Agriculture science, Moshtohor
Publisher
Hadeer S. A. Rashed
Volume
58
Issue
3
Pages
649-654
publication.type
Local
Paper Link
Open Link
Supplementary Materials
Not Available
Abstract
The coccinellid predator Coccinella undecimpunctata is considered one of the most efficient and potential
predators of many soft bodied insect pests especially aphids. The biology and predatory potential of this
coccinellid were studied on the 4
th nymphal instar of two aphid species, Aphis craccivora Koch. and Schizaphis
graminum (Rondani). By rearing on A. craccivora at 20, 25 and 30°C the incubation periods of C.
undecimpunctata eggs were 5.84, 4.32 and 3.62 days, led subsequently, to 80.20%, 94.40% and 64.40%
hatching, respectively, opposed to 5.98, 4.60 and 3.42 days with 74.40, 90.40 and 62.00% hatchability when
rearing took place on S. graminum. The total larval duration lasted 9.96 days on A. craccivora, being,
significantly, shorter than the 10.67 days resulted from rearing on S. graminum. Throughout the whole period of
the larval stage feeding on the 4th instar nymphs of A. craccivora and S. graminum, a single larva fed on163.54
or 170.21 nymphs, respectively. C. undecimpunctata female's longevity elapsed 64.04 and 63.19 days,
respectively. A single mated female deposited 686.69 eggs when reared on A. craccivora, opposed to 590.57
eggs by feeding on S. graminum. These results concluded that rearing of C. undecimpunctata on A. craccivora
proved the best to obtain immature stages of shorter durations, much lower consumption and the highest
reproductivety of eggs.
predators of many soft bodied insect pests especially aphids. The biology and predatory potential of this
coccinellid were studied on the 4
th nymphal instar of two aphid species, Aphis craccivora Koch. and Schizaphis
graminum (Rondani). By rearing on A. craccivora at 20, 25 and 30°C the incubation periods of C.
undecimpunctata eggs were 5.84, 4.32 and 3.62 days, led subsequently, to 80.20%, 94.40% and 64.40%
hatching, respectively, opposed to 5.98, 4.60 and 3.42 days with 74.40, 90.40 and 62.00% hatchability when
rearing took place on S. graminum. The total larval duration lasted 9.96 days on A. craccivora, being,
significantly, shorter than the 10.67 days resulted from rearing on S. graminum. Throughout the whole period of
the larval stage feeding on the 4th instar nymphs of A. craccivora and S. graminum, a single larva fed on163.54
or 170.21 nymphs, respectively. C. undecimpunctata female's longevity elapsed 64.04 and 63.19 days,
respectively. A single mated female deposited 686.69 eggs when reared on A. craccivora, opposed to 590.57
eggs by feeding on S. graminum. These results concluded that rearing of C. undecimpunctata on A. craccivora
proved the best to obtain immature stages of shorter durations, much lower consumption and the highest
reproductivety of eggs.