Risk Analysis of Brevipalpus Species (Acari: Tenuipalpidae) Introduction via Kiwifruit (Actinidia spp.) Imported to South Africa
2021
Tshikhudo, P.P. | Nnzeru, L.R. | Saccaggi, D.L. | Makhado, R.A. | Munyai, T.C.
International agricultural trade is a pathway by which pests and diseases can be transported and introduced to new areas. We examined South Africa's import of kiwifruit (Actinidia spp.) as a pathway for the introduction of mites in the genus Brevipalpus (Acari: Tenuipalpidae). Kiwifruit is imported as fresh fruit and propagation material from various countries. This study aimed to analyse the risk posed by these mites associated with the importation of kiwifruit over a period of 11 years (2009–2019). The majority of mite interceptions were associated with fresh fruit (97 %) mainly from Italy. Five mite species were recorded: Brevipalpus obovatus, B. chilensis, B. hondurani, B. lewisi and a new, undescribed species in genus Brevipalpus. The majority of specimens intercepted belonged to the new species. Any species not present in South Africa, particularly this Brevipalpus sp. nov., may pose a potential threat to South Africa's agricultural and horticultural industries and environment as well as biodiversity. The introduction of these species is a major phytosanitary concern because these polyphagous Brevipalpus spp. could find favourable conditions for their survival, development, reproduction and dispersal since South Africa is a country of diverse environmental conditions and various host plants.
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