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Characterizing Herbivore Resistance Mechanisms: Spittlebugs on Brachiaria spp. as an Example

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Arthropod Invasions Versus Soybean Production in Brazil: A Review.

Henrique Pozebon¹, Rafael P Marques¹, Guilherme Padilha¹

¹Crop Protection Department, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, Santa Maria, Brazil.

Journal of Economic Entomology

|June 10, 2020

Summary

Invasive arthropods threaten Brazilian soybean production, increasing insecticide use. Understanding invasion dynamics and pest invasiveness criteria is crucial for future management and economic stability.

Keywords:

insect pest insecticide usage invasive species ecology non-native species

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Area of Science:

Agricultural Entomology
Invasive Species Biology
Pest Management

Background:

Non-native arthropod invasions significantly impact Brazilian soybean production, affecting biodiversity, food security, and the economy.
Past invasion events and their correlation with increased insecticide usage in soybean crops remain underexplored.
The dynamics driving recent invasive species outbreaks in Brazil are not well understood.

Purpose of the Study:

To review arthropod invasions in the Brazilian soybean agroecosystem since 1990.
To investigate the correlation between invasive arthropod introductions and increased insecticide use.
To identify criteria for evaluating the invasiveness potential of non-native arthropods.

Main Methods:

Literature review of arthropod invasions in Brazilian soybean fields since 1990.
Analysis of historical data on soybean production losses and insecticide usage.
Case studies of Bemisia tabaci, Tetranychus urticae, and Helicoverpa armigera invasions.
Development of criteria for assessing arthropod invasiveness.

Main Results:

Introductions of Bemisia tabaci, Tetranychus urticae, and Helicoverpa armigera appear correlated with increased insecticide application.
Four criteria for evaluating potential arthropod invasiveness were outlined: likelihood of entry, establishment, species' biological features, and control measure availability.
Melanagromyza sojae has successfully invaded Brazilian soybean fields, meeting these invasiveness criteria.

Conclusions:

Current soybean pest management in Brazil faces significant challenges due to invasive species.
Proactive management strategies are essential to mitigate future economic losses and revenue reduction.
Understanding invasion dynamics and implementing robust risk assessment are critical for safeguarding soybean production.