Response to Short-Term Cold Storage for Eggs of Agasicles hygrophila (Coleoptera: Chrysomelidae), a Biological Control Agent of Alligator Weed Alternanthera philoxeroides (Caryophyllales: Amaranthaceae)

Autor: Yan Hong Liu, Hsin Chi, Rui Yan Ma, T. J. Ridsdill-Smith, Yuan Xin Wang, Dong Jia, Yuan Xiaofang
Přispěvatelé: 0-Belirlenecek, Liu, Y.-H., College of Agriculture, Shanxi Agricultural University, Taigu, Shanxi, 030801, China -- Jia, D., College of Agriculture, Shanxi Agricultural University, Taigu, Shanxi, 030801, China -- Yuan, X.-F., College of Life Science, Shanxi Agricultural University, Taigu, Shanxi, 030801, China -- Wang, Y.-X., College of Agriculture, Shanxi Agricultural University, Taigu, Shanxi, 030801, China -- Chi, H., Department of Plant Production and Technologies, Faculty of Agricultural Sciences and Technologies, Nigde Ömer Halisdemir University, Nigde, 51240, Turkey -- Ridsdill-Smith, T.J., School of Biological Sciences, Institute of Agriculture, University of Western Australia, Perth, WA 6009, Australia -- Ma, R.-Y., College of Agriculture, Shanxi Agricultural University, Taigu, Shanxi, 030801, China
Rok vydání: 2017
Předmět:
Zdroj: Journal of economic entomology. 111(4)
ISSN: 1938-291X
Popis: The alligator weed flea beetle, Agasicles hygrophila Selman & Vogt (Coleoptera: Chrysomelidae) has been used very successfully for the biological control of the widely-distributed invasive weed Alternanthera philoxeroides (Mart.) Griseb (Caryophyllales: Amaranthaceae). In order to extend the 'shelf life' of natural enemies released in biological control programs, cold storage has proven to be a valuable commercial procedure. To determine a suitable low temperature for storage of A. hygrophila, we conducted short-term cold storage treatments of eggs (4°C for 0.5, 1, 2, 5 d, and 7.5, 10, 15°C for 5 d and a control of 25°C; all eggs were returned to 25°C after the treatments). We evaluated the effects of these treatments on the subsequent fitness of the populations based on a demographic analysis using group-reared age-stage two-sex life tables. For 5 d storage, temperatures below 10°C had lethal effects, which were also observed at 4°C for 2 d storage. Storage at 4°C for 0.5 d did not affect the fitness of A. hygrophila, but it did not prolong the developmental time. Storage at 10°C for 5 d significantly decreased rates of population increase compared with 25°C. A. hygrophila stored at 15°C for 5 d had similar age-(stage) specific survival rates, rates of population increase, increased longevity and reproductive capability to the controls at 25°C. It is concluded that there were no significant fitness costs after 5 d storage at 15°C, which is therefore potentially a suitable storage temperature for A. hygrophila eggs. © The Author(s) 2018. Published by Oxford University Press on behalf of Entomological Society of America.
National Natural Science Foundation of China
We sincerely thank Dr. Lingling Gao (CSIRO Plant Industry, Perth, Australia) for reviewing an early version of this manuscript and the staff in the Biosafety and Biocontrol Group, Shanxi Agricultural University at Taigu, Shanxi, China. This work was supported by the National Natural Science Foundation of China (31570436 and 31500304). Y.H.L. and R.Y.M. conceived and designed the experiments. Y.H.L., D.J., X.F.Y., and Y.X.W. performed the experiments. Y.H.L. and H.C. analyzed the data. Y.H.L., T.J.R-S., H.C., and R.Y.M. wrote the paper. We declare no competing financial interests.
Databáze: OpenAIRE
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