Interactive effects of host plant and insecticide foliar application on oviposition and performance of Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) cryptic species Mediterranean (MED) and Middle East-Asia minor 1 (MEAM1) in Brazil

2021 ◽  
Author(s):  
Leonardo Libardi Miraldo ◽  
José Bruno Malaquias ◽  
Regiane Cristina Oliveira de Freitas Bueno
Keyword(s):  
Middle East ◽  
East Asia ◽  
Host Plant ◽  
Cryptic Species ◽  
Bemisia Tabaci ◽  
Foliar Application ◽  
Interactive Effects ◽  
Asia Minor ◽  
And Performance

scholarly journals Using RNA Interference to Reveal the Function of Chromatin Remodeling Factor ISWI in Temperature Tolerance in Bemisia tabaci Middle East–Asia Minor 1 Cryptic Species

Insects ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 113 ◽  
Author(s):  
Shun-Xia Ji ◽  
Xiao-Di Wang ◽  
Xiao-Na Shen ◽  
Lin Liang ◽  
Wan-Xue Liu ◽  
...  
Keyword(s):  
Thermal Stress ◽  
Middle East ◽  
East Asia ◽  
Cryptic Species ◽  
Chromatin Remodeling ◽  
Bemisia Tabaci ◽  
Environmental Changes ◽  
Temperature Tolerance ◽  
Asia Minor ◽  
Preferred Temperature

Invasive species often encounter rapid environmental changes during invasions and only the individuals that successfully overcome environmental stresses can colonize and spread. Chromatin remodeling may be essential in environmental adaptation. To assess the functions of imitation switch (ISWI) in invasive Bemisia tabaci Middle East–Asia Minor 1 (MEAM1) cryptic species, we cloned and characterized the MEAM1 BtISWI gene and determined its functions in response to thermal stress. The full-length cDNA of BtISWI was 3712 bp, with a 3068 bp open reading frame (ORF) encoding a 118.86 kDa protein. BtISWI mRNA expression was significantly up-regulated after exposure to heat shock or cold shock conditions, indicating that BtISWI expression can be induced by thermal stress. After feeding double-stranded RNA (dsRNA), specifically for BtISWI, resistance to both heat and cold decreased significantly, suggesting that BtISWI may function directly in the thermal tolerance of MEAM1. Moreover, the preferred temperature of MEAM1 adults fed dsRNA was 1.9–3.5 °C higher than the control groups. Taken together, our findings highlight the importance of epigenetic gene regulation in the thermal response or thermal adaptation of invasive Bemisia tabaci (B. tabaci), and provide a new potential target for establishing sustainable control strategies for B. tabaci.

scholarly journals Only the B biotype of Bemisia tabaci is present on vegetables in São Paulo State, Brazil

2011 ◽  
Vol 68 (1) ◽  
pp. 120-123 ◽  
Author(s):  
Kelly Cristina Gonçales Rocha ◽  
Julio Massaharu Marubayashi ◽  
Jesús Navas-Castillo ◽  
Valdir Atsushi Yuki ◽  
Carlos Frederico Wilcken ◽  
...  
Keyword(s):  
Middle East ◽  
East Asia ◽  
Bemisia Tabaci ◽  
Solanum Melongena ◽  
Sao Paulo ◽  
Asia Minor ◽  
São Paulo ◽  
Solanum Lycopersicum L ◽  
Cryptic Species Complex ◽  
Biotype B

Bemisia tabaci (Genn.) is one of the most important pests in cultivated areas of vegetables and ornamental crops around the world. Based on the mitochondrial cytochrome oxidize I (mtCOI) sequence, there is evidence that B. tabaci should be considered a cryptic species complex of 11 groups containing 24 species. Two of the groups, Middle East-Asia Minor 1 and Mediterranean include biotypes B and Q, respectively. In this study we evaluated the mtCOI sequence of B. tabaci populations collected in sites of the state of São Paulo, Brazil. Using PCR-RFLP with Taq I, a typical biotype B profile was obtained for all specimens. Based on the comparison with mtCOI reference sequences we found four haplotypes all belonging to the Middle East-Asia Minor 1. They occurred in the hosts pepper (Capsicum annuum L.), tomato (Solanum lycopersicum L.), eggplant (Solanum melongena L.) and cucurbitaceae plants.

scholarly journals The potential geographical distribution and phenology of Bemisia tabaci Middle East/Asia Minor 1, considering irrigation and glasshouse production

2020 ◽  
Vol 110 (5) ◽  
pp. 567-576 ◽  
Author(s):  
D. J. Kriticos ◽  
P. J. De Barro ◽  
T. Yonow ◽  
N. Ota ◽  
R. W. Sutherst
Keyword(s):  
Middle East ◽  
East Asia ◽  
Open Field ◽  
Bemisia Tabaci ◽  
Species Complex ◽  
Potential Distribution ◽  
Invasive Pest ◽  
Asia Minor ◽  
Potential Range ◽  
Pest Species

AbstractThe Bemisia tabaci species complex is one of the most important pests of open field and protected cropping globally. Within this complex, one species (Middle East Asia Minor 1, B. tabaci MEAM1, formerly biotype B) has been especially problematic, invading widely and spreading a large variety of plant pathogens, and developing broad spectrum pesticide resistance. Here, we fit a CLIMEX model to the distribution records of B. tabaci MEAM1, using experimental observations to calibrate its temperature responses. In fitting the model, we consider the effects of irrigation and glasshouses in extending its potential range. The validated niche model estimates its potential distribution as being considerably broader than its present known distribution, especially in the Americas, Africa and Asia. The potential distribution of the fitted model encompasses the known distribution of B. tabaci sensu lato, highlighting the magnitude of the threat posed globally by this invasive pest species complex and the viruses it vectors to open field and protected agriculture.

Rapid genetic turnover in populations of the insect pest Bemisia tabaci Middle East: Asia Minor 1 in an agricultural landscape

2012 ◽  
Vol 102 (5) ◽  
pp. 539-549 ◽  
Author(s):  
A. Dinsdale ◽  
N.A. Schellhorn ◽  
P. De Barro ◽  
Y.M. Buckley ◽  
C. Riginos
Keyword(s):  
Middle East ◽  
East Asia ◽  
Bemisia Tabaci ◽  
Agricultural Landscape ◽  
Temporal Structure ◽  
Insect Pest ◽  
Agricultural Landscapes ◽  
Asia Minor ◽  
Dispersal Ability ◽  
Genetic Composition

AbstractOrganisms differ greatly in dispersal ability, and landscapes differ in amenability to an organism's movement. Thus, landscape structure and heterogeneity can affect genetic composition of populations. While many agricultural pests are known for their ability to disperse rapidly, it is unclear how fast and over what spatial scale insect pests might respond to the temporally dynamic agricultural landscapes they inhabit. We used population genetic analyses of a severe crop pest, a member of the Bemisia tabaci (Hemiptera: Sternorrhyncha: Aleyrodoidea: Aleyrodidea) cryptic species complex known as Middle East-Asia Minor 1 (commonly known as biotype B), to estimate spatial and temporal genetic diversity over four months of the 2006–2007 summer growing season. We examined 559 individuals from eight sites, which were scored for eight microsatellite loci. Temporal genetic structure greatly exceeded spatial structure. There was significant temporal change in local genetic composition from the beginning to the end of the season accompanied by heterozygote deficits and inbreeding. This temporal structure suggests entire cohorts of pests can occupy a large and variable agricultural landscape but are rapidly replaced. These rapid genetic fluctuations reinforce the concept that agricultural landscapes are dynamic mosaics in time and space and may contribute to better decisions for pest and insecticide resistance management.

scholarly journals Nuances of Whitefly Vector–Crinivirus Interactions Revealed in the Foregut Retention and Transmission of Lettuce Chlorosis Virus by Two Bemisia tabaci Cryptic Species

Viruses ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1578
Author(s):  
Angel Y. S. Chen ◽  
Jaclyn S. Zhou ◽  
Jin-Xiang Liu ◽  
James C. K. Ng
Keyword(s):  
Middle East ◽  
Cryptic Species ◽  
Bemisia Tabaci ◽  
New World ◽  
Standard Procedure ◽  
Virus Transmission ◽  
Asia Minor ◽  
Vector Species ◽  
Lettuce Infectious Yellows Virus ◽  
Whitefly Vector

Lettuce infectious yellows virus is the first crinivirus for which the retention of purified virions ingested into the whitefly (Bemisia tabaci New World (NW)) vector’s foregut, has been demonstrated to be a requisite for successful virus transmission. This key finding supports the hypothesis that the determinant of foregut retention and transmission is present on the virion itself. However, whether this is also true for other criniviruses has not been established. Here, we provide evidence that lettuce chlorosis virus (LCV) acquired from plants is retained in the foreguts of both the B. tabaci NW and Middle East–Asia Minor 1 (MEAM1) vector species and transmitted upon inoculation feeding. An association between foregut retention and transmission by NW vectors is also observed following the acquisition and inoculation feeding of LCV virions purified using a standard procedure involving 2% or 4% (v/v) Triton™ X-100 (TX-100). However, while virions purified with 2% or 4% TX-100 are also retained in the foreguts of MEAM1 vectors, transmission is observed with the 4% TX-100-purified virions or when more vectors are used for acquisition and inoculation feeding. These results suggest that an intrinsic difference exists between NW and MEAM1 vectors in their interactions with, and transmission of, LCV virions.

Identification of Capsicum accessions tolerant to Tomato severe rugose virus and resistant to Bemisia tabaci Middle East-Asia Minor 1 (MEAM1)

2018 ◽  
Vol 43 (2) ◽  
pp. 138-145 ◽  
Author(s):  
Kessia F. C. Pantoja ◽  
Kelly C. G. Rocha ◽  
Arlete M. T. Melo ◽  
Júlio M. Marubayashi ◽  
Edson L. L. Baldin ◽  
...  
Keyword(s):  
Middle East ◽  
East Asia ◽  
Bemisia Tabaci ◽  
Asia Minor
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