| Grant number: | 17/21588-7 |
| Support Opportunities: | Regular Research Grants |
| Start date: | March 01, 2018 |
| End date: | February 29, 2020 |
| Field of knowledge: | Agronomical Sciences - Agronomy - Plant Health |
| Principal Investigator: | Renate Krause Sakate |
| Grantee: | Renate Krause Sakate |
| Host Institution: | Faculdade de Ciências Agronômicas (FCA). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil |
| City of the host institution: | Botucatu |
Abstract
The whitefly (Bemisia tabaci) is one of the most important pests in the world, especially being a vector of plant viruses. B. tabaci is classified in a complex of cryptic species. In Brazil, the invasive species Middle East-Asia Minor 1, MEAM1 (known as biotype B) and Mediterranean, MED (known as biotype Q) are the main responsible for great yield losses. MEAM1 was first reported in 1992 while MED was reported more recently; in 2013 in Rio Grande do Sul State and 2014 in São Paulo and Paraná States. Unfortunately, this pest is wide spreading in our country by ornamental plants and invading areas that MEAM1 is predominant. To date, the behaviour of MED is not known and this project has as goals: evaluate the competitive displacement between MED and MEAM1 in different hosts; evaluate biological behaviour, such as life cycle, oviposition, number of eggs/nymphs, survival and adults viability in virus-infected plants and non-virus-infected plants; analyse insecticides susceptibility (on egg, nymphs and adults stages) and the diversity of several B. tabaci population from Brazil by Next Generation Sequencing analysis. Furthermore, areas that we have reported MED in São Paulo and Paraná States will be monitored to verify the adaptation of this pest on field crops. The data obtained will address if MED is able to displace MEAM1; which species has more ability to displace another whereas there are several crops in the field and which insecticides are better to control each species. Moreover, Next Generation Sequencing analysis of B. tabaci populations from Brazil will provide data about genetic diversity, endosimbionts presence and virus associated to each cryptic species. (AU)
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