Potential of native palm species in Northeast Brazil as hosts for the invasive mite Raoiella indica (Acari: Tenuipalpidae).

Autor: Souza IV; Instituto Federal de Educação, Ciência e Tecnologia de Alagoas (IFAL), Murici, AL, Brazil.; Programa de Pós-Graduação em Proteção de Plantas, Universidade Federal de Alagoas (UFAL), Rio Largo, AL, Brazil., Lyra-Lemos RP; Instituto do Meio Ambiente do Estado de Alagoas (IMA), Herbário MAC, Maceió, AL, Brazil., Guzzo EC; Embrapa Tabuleiros Costeiros, Unidade de Pesquisa de Rio Largo, Rio Largo, AL, Brazil. elio.guzzo@embrapa.br.; Programa de Pós-Graduação em Proteção de Plantas, Universidade Federal de Alagoas (UFAL), Rio Largo, AL, Brazil. elio.guzzo@embrapa.br.
Jazyk: angličtina
Zdroj: Experimental & applied acarology [Exp Appl Acarol] 2020 Apr; Vol. 80 (4), pp. 509-520. Date of Electronic Publication: 2020 Apr 05.
DOI: 10.1007/s10493-020-00484-4
Abstrakt: The red palm mite, Raoiella indica Hirst (Tenuipalpidae), has mainly been registered on palm species (Arecaceae), and its expansion in Brazil has the potential to cause significant negative impact on cultivated as well as native palms. Here, we evaluate the potential of native palms from Northeast Brazil to act as hosts of R. indica. Specifically, we used in situ free-choice and confinement tests, in which sections of palm leaves/leaflets of various species were experimentally infested with R. indica. We tested the following species: Acrocomia aculeata, Acrocomia intumescens, Allagoptera caudescens, Attalea funifera, Attalea oleifera, Bactris acanthocarpa var. acanthocarpa, Bactris ferruginea, Bactris glassmanii, Bactris hirta var. spruceana, Bactris pickelii, Copernicia prunifera, Desmoncus orthacanthos, Desmoncus polyacanthos, Syagrus coronata and Syagrus schizophylla. All of these were compared with the mite's preferred host, the coconut palm, Cocos nucifera. In the free-choice test, both male and female R. indica preferred C. nucifera in comparison to each of the native palms. In the confinement test, we observed significant differences in the survivorship between mites on native palms and those on coconut palms after the second day of infestation. By the fifth day, survivorship of mites on the native palms was almost always significantly lower than on C. nucifera (excepting for C. prunifera). We conclude that, among all the native palms evaluated, only the carnauba palm (C. prunifera) is at risk from R. indica. This result is relevant as this palm is an economically important species in the region.
Databáze: MEDLINE
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