Bibliographic citations
Gamarra, H., (2015). Bemisia afer sensu lato y su relación con algunos virus que afectan a Ipomoea batatas en el Perú [Tesis, Universidad Nacional Agraria La Molina]. https://hdl.handle.net/20.500.12996/941
Gamarra, H., Bemisia afer sensu lato y su relación con algunos virus que afectan a Ipomoea batatas en el Perú [Tesis]. : Universidad Nacional Agraria La Molina; 2015. https://hdl.handle.net/20.500.12996/941
@mastersthesis{renati/1115806,
title = "Bemisia afer sensu lato y su relación con algunos virus que afectan a Ipomoea batatas en el Perú",
author = "Gamarra Yañez, Heidy Alcira",
publisher = "Universidad Nacional Agraria La Molina",
year = "2015"
}
Life cicle of Bemisia afer sensu lato and sweet potato virus transmission by this species were studied under laboratory conditions. The development cycle was 34.79 days for males and 42.19 days for females with development of immature stages of 8.48 days for egg, and 12.9 days for nymph. Adult longevity was 24.16 days for female and 10.16 days for male. The pre-oviposition period was 1.2 days. Oviposition period varied from one to 40 days, the capacity of oviposition was 115-135 eggs/ female, the sex ratio was 1.5: 1. Bemisia tabaci biotype B is considered to be the primary vector of Sweet Potato Chlorotic Stunt Virus (SPCSV, genus Crinivirus), Trialeurodes abutiloneus also has been shown to transmit SPCSV in a semipersistent manner. Mixed infection of SPCSV with the aphid-transmitted Sweet Potato Feathery Mottle Virus (SPFMV, genus Potyvirus) causes Sweet Potato Virus Disease (SPVD), a major virus disease affecting this crop. High populations of B. afer are seasonally associated with sweetpotatoes in Peru during times of low B. tabaci incidence. The transmission of Sweet Potato Leaf Curl Virus (SPLCV, genus Begomovirus) and SPCSV was studied, SPLCV was not transmitted by B. afer, but SPCSV was transmitted by both whiteflies species. SPCSV efficiency (in single and double infection with SPFMV) by laboratory-reared B. afer sensu lato and B. tabaci biotype B was investigated. SPCSV was transmitted by both species, with similar transmission efficiency when the virus was acquired from plants singly infected by SPCSV or doubly infected with SPCSV and SPFMV, at 20 and 25°C. We conclude that B. afer is a newly identified vector of SPCSV. This finding may have important epidemiological significance for the spread of SPCSV and SPVD.
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