Formosan Entomologist (2004) 24, 305-315

Mei-Hwa Kuo and Chia-Yu Chen (2004)
[Development and population parameters of the cowpea aphid, Aphis craccivora Koch (Hemiptera: Aphididae), at various constant temperatures]
Formosan Entomologist 24 (4), 305-315
Abstract: In the laboratory, the development, longevity, fecundity, and population parameters of the cowpea aphid, Aphis craccivora Koch, were studied at six constant temperatures (10, 15, 20, 25, 30, and 35°C) on seedlings of the asparagus bean, Vigna sesquipedalis (L.) Fruw. Results showed that the developmental time of immatures was decreased shortened from 28.1 days at 10°C to 4.2 days at 30°C. According to the linear regression analysis of development rate and temperature between 10 and 30°C, overall immature development required 97.2 day-degrees above 7.4 °C . Adult longevity decreased from 42.2 days at 15°C to 6.2 days with increasing temperature to 35°C, at which temperature the average progeny per female was more than 82 individuals, up from 15 at 25°C. The intrinsic rate of increase (r) and the finite rate of increase W were the lowest at 10°C (r = 0.0437/d, lambda = 1.0447/d), and the highest at 30°C (r = 0.4330/d, lambda = 1.5419/d). The population reared at 25°C had the highest net reproductive rate (R₀ = 97.1 offspring/female). The mean generation time (T) decreased as the temperature increased from 41.1 days at 10°C to 8.3 days at 35°C.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Chinese)
Database assignments for author(s): Mei Hwa Kuo

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
environment - cropping system/rotation

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Pest and/or beneficial records:

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