Life Table Studies on Eupeodes corollae (Fabricius) (Diptera:Syrphidae), a Predator of the Cabbage Aphid, Brevicoryne brassicae (Linnaeus) (Homoptera:Aphididae)


Affiliations

  • Dr. Y. S. Parmar University of Horticulture and Forestry, Department of Entomology, H.P., 173230, India

Abstract

Life table studies on Eupeodes corollae (Fabricius), an important syrphid predator of the cabbage aphid, Brevicoryne brassicae (Linnaeus) in the mid-hill region of Himachal Pradesh revealed that the net reproductive rate (Ro) of the species was 187.52 female eggs/female. The true intrinsic rate of natural increase (rm) was 0.134. The population multiplied 1.14 times per day during the generation and was able to multiply 2.55 times every week. On reaching a stable age-distribution, the population comprised approximately 97 per cent of immature stages.

Keywords

Brevicoryne brassicae, Eupeodes corollae, Intrinsic Rate of Increase, Life-Table, Net Reproductive Rate.

Subject Discipline

Entomology

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