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Contamination of food by microbial agents and natural toxins poses significant risks to public health. These hazards can be introduced at various points across the food supply chain, ranging from environmental sources to processing and storage stages. Understanding these contamination pathways is critical for developing strategies to ensure food safety.Seafood is particularly vulnerable to contamination through both environmental exposure and microbial colonization. Toxins from harmful algal...
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Fall armyworm from a maize multi-peril pest risk perspective.

Senait D Senay1,2, Philip G Pardey1,3, Yuan Chai1,3

  • 1GEMS Informatics Center, University of Minnesota, Saint Paul, MN, United States.

Frontiers in Insect Science
|March 12, 2024
PubMed
Summary
This summary is machine-generated.

African maize crops face severe risks from the fall armyworm (Spodoptera frugiperda) and numerous other pests due to climate suitability. This multi-peril pest environment threatens crop production across the continent.

Keywords:
Spodoptera frugiperdafall armywormmaizemulti-peril pest riskpest risk modeling

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Area of Science:

  • Agricultural Entomology
  • Climate Change Impact
  • Pest Management

Background:

  • The fall armyworm (Spodoptera frugiperda) is a significant invasive pest impacting maize production globally.
  • Climate change is altering pest distribution and increasing the risk of crop infestations.
  • African maize production is particularly vulnerable due to climate suitability for multiple pests.

Purpose of the Study:

  • To spatially assess the global climate suitability for fall armyworm infestations.
  • To evaluate the multi-peril pest risk for African maize production.
  • To inform crop management and breeding strategies for mitigating pest risks.

Main Methods:

  • Assembled 3,175 geo-tagged occurrences of fall armyworm.
  • Utilized pest physiological requirements and climate data for spatial analysis.
  • Assessed the overlap of climate suitability for multiple pest species.

Main Results:

  • Nearly all African maize-growing areas are climatically suitable for seasonal fall armyworm infestations, with 92% supporting year-round pest survival.
  • Over 95% of fall armyworm-suitable African maize areas also support at least three additional pests year-round.
  • Significant portions of African maize areas face risks from nine or more additional pests, creating a high-risk production environment.

Conclusions:

  • African maize crops face exceptionally high, multi-peril pest risks due to climate suitability.
  • The findings highlight the urgent need for integrated pest management strategies tailored to African conditions.
  • Complex pest interactions necessitate advanced crop breeding and management solutions to ensure food security.