First report of Raoiella indica Hirst (Acari: Tenuipalpidae) in Paraguay
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First report of Raoiella indica Hirst (Acari: Tenuipalpidae) in Paraguay María Bernarda Ramírez1 · Humberto Jorge Sarubbi1 · Osmar Arias1 · Letícia Henrique de Azevedo2 · Carlos Holger Wenzel Flechtmann2 Received: 29 October 2019 / Accepted: 5 March 2020 © Deutsche Phytomedizinische Gesellschaft 2020
Abstract The mites, introduced through ornamentals, go unnoticed by the inspectors who are not specialists, can present a risk for the dispersion to different regions. In March 2018, in the Central Department of Asunción, Paraguay, in a nursery of plants was detected for the first time damage and presence of the red palm mite Raoiella indica Hirst (Acari: Tenuipalpidae) on leaves of Dypsis madagascariensis (Becc.) Beentje & J. Dransf., Arecaceae. It is likely that the presence of the pest is restricted yet, because this plant was imported from Brazil for garden ornamentation. Visual observations were made in other nurseries of the same locality; however, the red mite has not been detected. Therefore, it is necessary to permanently monitor the host plants, also in banana plantations in order to verify the occurrence of the red mite, and implement integrated management and prevent its spread. The mite is a threat to the production of bananas; a sector of great economic importance which benefits the small producer, it is the most consumed fruit in the country and besides it is exported. Keywords Red palm mite · Palm trees · Introduced mite · Dissemination The red palm mite, Raoiella indica Hirst (Acari: Tenuipalpidae), was first reported in South America on coconut leaves and banana in Venezuela (Vásquez et al. 2008). Then it appeared in Colombia (Carrillo et al. 2011). In 2009, it was reported for the first time in Brazil in the State of Roraima (Navia et al. 2011), being later found in Manaus, State of Amazonas (Rodrigues and Antony 2011). Nevertheless, recent reports in São Paulo (Southeastern) (Oliveira et al. 2016) and Paraná (Southern) (Hata et al. 2017) showed that it has spread to other regions of Brazil. Later, the new dissemination in the State of Espírito Santo was also reported (Marsaro Jr et al. 2018; Melo et al. 2018; Barroso et al. 2019). Later, the new dissemination in the State of Santa Catarina was also reported (Nora et al. 2019). The red palm mite is recognized as an important pest of palms and coconuts, which can kill young and adult
* María Bernarda Ramírez [email protected] 1
Department of Crop Protection, Facultad de Ciencias Agrarias, Universidad Nacional de Asunción, Campus Universitario, San Lorenzo, Paraguay
Department of Entomology and Acarology, Escola Superior de Agricultura “Luiz de Queiroz”, USP, Piracicaba, SP, Brazil
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plants (Navia et al. 2015). Damages are noticed when the population is high, the leaf infested initially is chlorotic, then the area of damage extends with dark brown and necrotic color (Etienne and Flechtmann 2006; Peña et al. 2006; de la Torre et al. 2010). The losses caused by this pest have been observed in the nursery and may cause
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