Spatial distribution of avocado branch dieback and wilting (ABDW) vectored by ambrosia beetles in the Caribbean South America

Avocado Branch Dieback and Wilting (ABDW) was recently reported on West-Indian avocado ( Persea americana var. americana ) orchards in the Serrania de Perija, Colombia. This disease is caused by Bionectria pseudochroleuca and transmitted by ambrosia beetles. In this work we estimated the potential d...

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Bibliographic Details
Published in:Tropical plant pathology 2020-08, Vol.45 (4), p.363-375
Main Authors: Burbano-Figueroa, Oscar, Osorio-Almanza, Lorena, Cardona, Angela Maria Arcila
Format: Article
Language:English
Subjects:
Algorithms
Beetles
Biomedical and Life Sciences
Coleoptera
Dieback
Diurnal
Dry forests
Entropy
Fruit trees
Life Sciences
Maximum entropy
Orchards
Original Article
Plant Pathology
Signs and symptoms
Spatial distribution
Tropical forests
Wilting
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Summary:Avocado Branch Dieback and Wilting (ABDW) was recently reported on West-Indian avocado ( Persea americana var. americana ) orchards in the Serrania de Perija, Colombia. This disease is caused by Bionectria pseudochroleuca and transmitted by ambrosia beetles. In this work we estimated the potential distribution of ABDW to map avocado-growing areas at risk of ABDW in Colombia and Venezuela. Disease occurrence records were obtained from pest and disease surveys undertaken during 2014–2015 period in the avocado-growing areas of the Colombian Caribbean. The correlative maximum entropy-based model (MaxEnt) algorithm was used to assess the potential distribution of ABDW in the Caribbean South America. The MaxEnt model predicted locations with potential distribution for ABDW disease in tropical dry forest biomes of Colombia and Venezuela. The largest producing avocado areas in these locations are Serrania de Perija (Colombia) and Serranía de Mérida (Venezuela). Field reports from these locations confirm the presence of avocado trees with symptoms of wilting and branch dieback in association with ambrosia beetles. Isothermality, mean diurnal range in temperature and precipitation of the wettest month were the variables with the highest contribution and importance to the spatial distribution model of ABDW disease. A potential distribution map of the ABDW disease for the Caribbean South America was proposed together with an explanatory hypothesis for disease occurrence.
ISSN:1983-2052
1982-5676
1983-2052
DOI:10.1007/s40858-020-00352-x