Spatial Distribution of Frankliniella schultzei (Thysanoptera: Thripidae) in Open-Field Yellow Melon, With Emphasis on the Role of Surrounding Vegetation as a Source of Initial Infestation

Spatial Distribution of Frankliniella schultzei (Thysanoptera: Thripidae) in Open-Field Yellow Melon, With Emphasis on the Role of Surrounding Vegetation as a Source of Initial Infestation

Frankliniella schultzei (Trybom) is a serious pest of melon crops and is commonly found in the main producing areas of melon in Brazil (North and Northeast regions). This pest causes significant losses, damaging plants through feeding and tospovirus vectoring. Thus, the proper management of F. schul...

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Bibliographic Details
Published in:Journal of economic entomology Vol. 113; no. 6; pp. 2997 - 3003
Main Authors: Carvalho, Sindoval C., Junior, Paulo A. S., Pereira, Poliana S., Sarmento, Renato A., Farias, Elizeu S., Lima, Carlos H. O., Santos, Gil R., Picanço, Marcelo C.
Format: Journal Article
Language:English
Published: US Entomological Society of America 01-12-2020
Oxford University Press
Subjects:
Abundance
aggregation
Air temperature
Analysis
Animals
Brazil
Correlation analysis
Crops
Cucurbitaceae
Distribution patterns
Edge effect
Flowering
Frankliniella schultzei
Fruits
landscape
ordinary kriging
Pest Control
Pests
SAMPLING AND BIOSTATISTICS
semivariogram
Spatial distribution
Surveys
Thrips
Thysanoptera
Tospovirus
Brazil
ordinary kriging
semivariogram
aggregation
Thysanoptera
landscape
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Summary:Frankliniella schultzei (Trybom) is a serious pest of melon crops and is commonly found in the main producing areas of melon in Brazil (North and Northeast regions). This pest causes significant losses, damaging plants through feeding and tospovirus vectoring. Thus, the proper management of F. schultzei is crucial to prevent economic losses, and knowledge of the within-field distribution patterns of F. schultzei can be used to improve this pest management. This study aimed to determine the within-field distribution (through semivariogram modeling and kriging interpolation) and the factors associated with F. schultzei abundance in open-field yellow melon crops. We surveyed four yellow melon fields located in Formoso do Araguaia (Tocantins state, North Brazil) for thrips abundance in various crop stages (vegetative, flowering, and fruiting) in 2015 and 2016. Twelve models were fitted and it was determined that F. schultzei counts were strongly aggregated. The median spatial dependence was 4.79 m (range 3.55 to 8.02 m). The surface maps generated by kriging depicted an edge effect in fields 3 and 4. In addition, correlation analyses indicated that air temperature and presence of surrounding cucurbits are positively associated with F. schultzei abundance in yellow melon fields. Altogether, these insights can be combined for spatially based pest management, especially when the conditions (cucurbits in the surroundings and warmer periods) are favorable to F. schultzei.
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ISSN:0022-0493
1938-291X
DOI:10.1093/jee/toaa219