Cucumber mosaic virus epidemiology in pepper: Aphid dispersal, transmission efficiency and vector pressure

Cucumber mosaic virus (CMV) causes significant damage and yield losses in peppers. The objective of this study is to determine the efficiency of prevalent aphid species occurring in pepper fields to transmit this virus within pepper plants and to identify their vector pressure in order to target the...

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Bibliographic Details
Published in:Annals of applied biology 2023-01, Vol.182 (1), p.101-111
Main Authors: Khaled‐Gasmi, Wafa, Souissi, Rebha, Boukhris‐Bouhachem, Sonia
Format: Article
Language:English
Subjects:
Alatae
Aphis fabae solanella
Aphis gossypii
Aphis spiraecola
Cucumbers
Dispersal
Efficiency
Epidemics
Epidemiology
Flight activity
Myzus persicae
Peppers
Pressure
Species
Transmission efficiency
Vectors
Vegetables
Viruses
yellow water trap
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Summary:Cucumber mosaic virus (CMV) causes significant damage and yield losses in peppers. The objective of this study is to determine the efficiency of prevalent aphid species occurring in pepper fields to transmit this virus within pepper plants and to identify their vector pressure in order to target the critical species implicated in CMV epidemics spread. Alatae and apterae were monitored in an experimental pepper field in northern Tunisia for 3 years. Sixty‐eight species were captured in winged form in yellow water traps. The most abundant species were Myzus persicae, Aphis gossypii, Aphis fabae, Aphis spiraecola, Acyrthosiphon pisum, Metopolophium dirhodum, Rhopalosiphum maidis, Aphis craccivora, Aphis nerii, Hyalopterus pruni, Sitobion avenae and Rhopalosiphum padi constituting 90% of aphid populations in the field. Their temporal dynamic showed a high period of flight activity from April to June and a second peak in September was registered. Two of these species, M. persicae and A. gossypii were also found in their wingless form on pepper leaves with a prevalence of 99.5% and 0.5%, respectively. The 12 most abundant aphid species were tested for their transmission efficiency of CMV (CMV‐pepp2 isolate) with A. gossypii as a reference vector. All aphids tested, including colonizing and non‐colonizing species on pepper, were verified to be vectors of this isolate. However, significant differences in the transmission efficiency were found between the aphid species (p 
ISSN:0003-4746
1744-7348
DOI:10.1111/aab.12798