Archives of Phytopathology and Plant Protection (2013) 46, 1393-1402

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Shima Rahmani and Ali R. Bandani (2013)
Demographic traits of Hippodamia variegata (Goeze) (Coleoptera: Coccinellidae) reared on Aphis fabae Scopoli (Hemiptera: Aphididae)
Archives of Phytopathology and Plant Protection 46 (12), 1393-1402
Abstract: Lady beetles are the most important predatory species among arthropods; thus, studying their population parameters gives a clear picture about their life span. The demography of the lady beetle, Hippodamia variegata (Goeze) (Coleoptera: Coccinellidae), was studied under laboratory condition, on Aphis fabae at 27 °C based on the age-stage, two-sex life table. The means and standard errors were estimated by the bootstrap techniques. The results showed that the intrinsic rate of increase (r) and the finite rate of increase (λ) were 0.18 and 1.20 d−1, respectively. The net reproduction rate (R 0) and the gross reproduction rate were 232.49 and 442.48 offspring/individual, respectively. The mean generation time (T) was 29.03 days. The first peak of reproductive value in females was on the 18th day, which coincides with the total pre-oviposition period counted from birth. The life expectancy curve (exj ) of a new hatched female adult was 60 days. The results demonstrated that growth, survival and development of the predator can be described accurately by use of the age-stage, two-sex life table.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Ali Reza Bandani

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution
population dynamics/epizootiology

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Aphis fabae
Hippodamia variegata (predator) Aphis fabae