Temperature- and Relative Humidity-Dependent Life History Traits of Phenacoccus solenopsis (Hemiptera: Pseudococcidae) on Hibiscus rosa-sinensis (Malvales: Malvaceae)

Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae), a worldwide distributive invasive pest, originated from the United States, and it was first reported in Guangdong province, China, in 2008. The effects of temperature and relative humidity (RH) on the life history traits of P. solenopsis on...

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Bibliographic Details
Published in:Environmental entomology 2015-08, Vol.44 (4), p.1230-1239
Main Authors: Chen, H. S, Yang, L, Huang, L. F, Wang, W. L, Hu, Y, Jiang, J. J, Zhou, Z. S
Format: Article
Language:English
Subjects:
adults
Animals
biological characteristic
eggs
fecundity
females
Food Chain
heat sums
Hemiptera
Hemiptera - growth & development
Hibiscus - growth & development
Hibiscus rosa-sinensis
Humidity
immatures
instars
Introduced Species
life history
longevity
pests
Phenacoccus solenopsis
PHYSIOLOGICAL ECOLOGY
relative humidity
survival rate
Temperature
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Summary:Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae), a worldwide distributive invasive pest, originated from the United States, and it was first reported in Guangdong province, China, in 2008. The effects of temperature and relative humidity (RH) on the life history traits of P. solenopsis on Hibiscus rosa-sinensis L. (Malvales: Malvaceae) were studied at seven constant temperatures (15, 20, 25, 27.5, 30, 32.5, and 35°C) and three RHs (45, 60, and 75%). The results showed that temperature, RH, and their interactions significantly influenced the life history traits of P. solenopsis. First instar was the most sensitive stage to extreme temperatures with very low survival rates at 15 and 35°C. At 25–32.5°C and the three RHs, the developmental periods of entire immature stage were shorter with values between 12.5–18.6 d. The minimum threshold temperature and the effective accumulative temperature for the pest to complete one generation were 13.2°C and 393.7 degree-days, respectively. The percentage and longevity of female adults significantly differed among different treatments. It failed to complete development at 15 or 35°C and the three RHs. Female fecundity reached the maximum value at 27.5°C and 45% RH. The intrinsic rate for increase (r), the net reproductive rate (R0), and the finite rate of increase (λ) reached the maximum values at 27.5°C and 45% RH (0.22 d-1, 244.6 hatched eggs, and 1.25 d-1, respectively). Therefore, we conclude that 27.5°C and 45% RH are the optimum conditions for the population development of the pest.
ISSN:0046-225X
1938-2936
DOI:10.1093/ee/nvv085