Characterization of antibiosis to the silverleaf whitefly Bemisia tabaci biotype B (Hemiptera: Aleyrodidae) in cowpea entries

The silverleaf whitefly, Bemisia tabaci (Gennadius) biotype B (Hemiptera: Aleyrodidae), is considered one of the most important pests of cowpea (Vigna unguiculata L. Walp.), limiting the productivity of this crop worldwide. Chemical control is still the main strategy for the management of population...

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Bibliographic Details
Published in:Journal of pest science 2014-12, Vol.87 (4), p.639-645
Main Authors: Cruz, Patrícia L, Baldin, Edson L. L, de Jesus P. de Castro, Maria
Format: Article
Language:English
Subjects:
Agriculture
Aleyrodidae
Antibiosis
Bemisia argentifolii
Bemisia tabaci
Biomedical and Life Sciences
Breeding
Chemical control
Cowpeas
Ecology
eggs
Entomology
Forestry
genotype
Genotypes
Hemiptera
humans
immatures
incubation period
Insecticide resistance
Insects
instars
Invasive insects
Life Sciences
Mortality
Organic chemistry
Original Paper
Pest resistance
Pesticides
Pests
Plant Pathology
Plant Sciences
Viability
Vigna unguiculata
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Summary:The silverleaf whitefly, Bemisia tabaci (Gennadius) biotype B (Hemiptera: Aleyrodidae), is considered one of the most important pests of cowpea (Vigna unguiculata L. Walp.), limiting the productivity of this crop worldwide. Chemical control is still the main strategy for the management of populations of this insect. However, due to the harmful effects of pesticides on the environment and to humans, less injurious alternatives have been investigated. Along this line, the use of resistant genotypes can be a valuable tool for the control of the silverleaf whitefly. In this paper, we investigate some biological aspects of B. tabaci biotype B confined on 14 genotypes of cowpea. We evaluated the incubation period, egg viability, duration of nymphal stages, total duration of the juvenile phase, instar mortality and total mortality of the immature stage. The genotype MNC 99-541 F21 exhibited antibiosis against the whitefly, prolonging the lifecycle of the insect. The genotypes Canapu, BRS-Urubuquara and TE97-304 G-4 also exhibited antibiosis, causing high nymphal mortality. These results may help in breeding programmes to develop cowpea lines with resistance to B. tabaci biotype B.
ISSN:1612-4758
1612-4766
DOI:10.1007/s10340-014-0612-4