A critical evaluation of the effects of plant essential oil formulations against silverleaf whitefly, Bemisia tabaci, B biotype (Gennadius) and its natural enemies

ABSTRACT: This study was aimed at assessing some biological parameters of Bemisia tabaci B biotype at immature stages to examine antibiosis in six soybean genotypes, besides antixenosis resistance to oviposition in choice and non-choice tests, under greenhouse and laboratory conditions. Between April 2016 and August 2016, bioassays were carried out at the Laboratory of Applied Entomology at College of Agricultural Sciences at Federal University of Grande Dourados (UFGD) Dourados (MS), Brazil. The following variables were evaluated: egg incubation period, nymphal and egg-to-adult duration, egg and nymph viability, and egg-to-adult survival on the soybean genotypes 68i70 RSF IPRO, M6210 IPRO, MS 947 IPRO, BMX Potência RR, M6410 IPRO, and ANTA 82 RR. Antixenosis resistance to oviposition by the silverleaf whitefly was found for MS 947 IPRO, while oviposition was highest for ANTA 82 RR, M6210 IPRO, and M6410 IPRO. The genotype MS 947 IPRO adversely affected egg and nymph viability, and egg-to-adult survival rates was the lowest among genotypes (59.75%), suggesting antibiosis resistance to this pest.

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Sweetpotato Whitefly B Biotype of Silverleaf Whitefly, Bemisia tabaci (Gennadius) or Bemisia argentifolii Bellows & Perring (Insecta: Homoptera: Aleyrodidae)

EDIS ◽

10.32473/edis-in286-2002 ◽

1969 ◽

Vol 2002 (8) ◽

Cited By ~ 1

Author(s):

Heather J. McAuslane

Keyword(s):

Bemisia Tabaci ◽

Cooperative Extension ◽

Cooperative Extension Service ◽

Extension Service ◽

Silverleaf Whitefly ◽

Bemisia Argentifolii ◽

Sweetpotato Whitefly ◽

University Of Florida ◽

Agricultural Sciences ◽

B Biotype

This document is EENY-129, one of a series of Featured Creatures from the Entomology and Nematology Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Published: April 2000. Revised: November 2002. https://edis.ifas.ufl.edu/in286

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Survey of Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) biotypes in Brazil using RAPD markers

Genetics and Molecular Biology ◽

10.1590/s1415-47572000000400012 ◽

2000 ◽

Vol 23 (4) ◽

pp. 781-785 ◽

Cited By ~ 31

Author(s):

L.H.C. Lima ◽

D. Návia ◽

P.W. Inglis ◽

M.R.V. de Oliveira

Keyword(s):

Bemisia Tabaci ◽

Rapd Markers ◽

Morphological Characters ◽

Cultivated Plants ◽

Correct Identification ◽

Silverleaf Whitefly ◽

Agricultural Pest ◽

Rapd Pcr ◽

B Biotype

In 1991, the poinsettia strain, silverleaf whitefly or B biotype of Bemisia tabaci was detected in Brazil. This variant is a far more serious agricultural pest than the previously prevalent non-B (BR) biotype. The correct identification of B. tabaci is problematic since it is highly polymorphic with extreme plasticity in key morphological characters that vary according to the host. RAPD-PCR was used to survey the B biotype and other biotypes of B. tabaci in Brazil. Whiteflies were collected from cultivated plants and weeds from 57 different localities and on 27 distinct crops. RAPD analyses using two selected 10-mer primers reliably identified the BR biotype and the B biotype of B. tabaci and also differentiated other whitefly species. The presence of the B biotype was confirmed in 20 Brazilian states. The BR and B biotypes of B. tabaci were found to coexist in the whitefly populations of three different localities: Jaboticabal, SP; Rondonópolis and Cuiabá, MT, and Goiânia, GO.

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Baseline Susceptibility of Bemisia tabaci B Biotype (Hemiptera: Aleyrodidae) Populations from California and Arizona to Spiromesifen

Journal of Economic Entomology ◽

10.1093/jee/101.1.174 ◽

2008 ◽

Vol 101 (1) ◽

pp. 174-181 ◽

Cited By ~ 3

Author(s):

Nilima Prabhaker ◽

S. J. Castle ◽

L. Buckelew ◽

Nick C. Toscano

Keyword(s):

Bemisia Tabaci ◽

Bemisia Tabaci B Biotype ◽

B Biotype

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Comparative Demographic Traits of the Whitefly (Bemisia tabaci) B Biotype against different Host Plants

International Journal of Agriculture and Biology ◽

10.17957/ijab/15.1690 ◽

2021 ◽

Vol 25 (02) ◽

pp. 460-468

Author(s):

Muhammad Farooq

Keyword(s):

Bemisia Tabaci ◽

Intrinsic Rate ◽

Reproductive Rate ◽

Intrinsic Rate Of Increase ◽

Developmental Duration ◽

Net Reproductive Rate ◽

Demographic Traits ◽

Rate Of Increase ◽

Bemisia Tabaci B Biotype ◽

B Biotype

The sucking pests, especially whitefly, have damaged various fields and fruit crops across the globe. The study of life-history is of prime importance to monitor the dynamics for preference of a species to its host. This study tested the prevalence and preference of a whitefly species, Bemisia tabaci (Gennadius) B biotype (Hemiptera: Aleyrodidae) on tomato, cotton, pepper, and okra as hosts using age-stage two-sex life table. Results revealed the highest pre-adult developmental duration, survival rate, and fecundity on tomato while the lowest values on okra. Population parameters such as the net reproductive rate (R0), intrinsic rate of increase (r), and finite rate of increase (λ) were demonstrated longer on cotton and tomato compared to much lower R0, r, and λ on pepper and okra. Okra responded significantly differently in the case of the mean generation time, T among all tested genotypes. These findings suggest the possibility of summer vegetables as more favorable hosts for B. tabaci. © 2021 Friends Science Publishers

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Use of lablab (Lablab purpureus (L.) Sweet) for bio-control by native arthropods and its effect on yield of pumpkins

Bulletin of Entomological Research ◽

10.1017/s0007485315001005 ◽

2015 ◽

Vol 106 (2) ◽

pp. 191-196

Author(s):

S.A. Qureshi ◽

M. Angove ◽

S. Wilkens ◽

D.J. Midmore

Keyword(s):

Bemisia Tabaci ◽

Natural Enemies ◽

Chemical Control ◽

Insect Pests ◽

Fruit Weight ◽

Total Weight ◽

Silverleaf Whitefly ◽

Lablab Purpureus ◽

Significant Difference ◽

Effect On Yield

AbstractSilverleaf whitefly (SLW, Bemisia tabaci MEAM1) and aphids are sap-sucking insects, which pose a serious threat to Australian cucurbit crops and the horticulture industry. Traditional chemical control for these insect pests is becoming less effective, and there is a need to search for alternative or supplementary methods. This study aimed to manipulate the habitat of pumpkin crops in a tropical setting (Queensland, Australia), by growing pumpkins (var. Japanese pumpkin) alone and between lablab (Lablab purpureus L. Sweet). It was hypothesized that the presence of lablab will increase the populations of natural enemies, and through their control of insect pests such as SLW and aphids, will affect pumpkin yield. The population of arthropods (natural enemies and pests of pumpkin), with a focus on SLW and aphids, were sampled weekly on both lablab and pumpkin crop for a total of 21 weeks. Results showed that lablab hosted more enemies of SLW per plant than pumpkin in either treatment. In addition, adult SLW numbers were significantly higher in the pumpkin-only crop compared with the pumpkin grown between lablab, while pumpkin in the mixed plantings had significantly more ladybirds and lacewing larvae (P < 0.05). While there was no significant difference in the average fruit weight between treatments, the total weight (kg) and number of marketable pumpkins per hectare was greater (P < 0.05) for the pumpkin/lablab treatment than the pumpkin-only treatment. This study shows that growing lablab alongside a pumpkin crop may enhance natural enemies of SLW and could significantly increase the yield.

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