A new record of a pest mite on strawberry: Phytonemus pallidus (Banks) (Acari: Tarsonemidae) arrives in Minas Gerais, Brazil
Keywords:
cyclamen mite, first report, organic strawberry crops, phytophagous miteAbstract
Phytonemus pallidus was found in organic strawberry crops in 2 municipalities in the state of Minas Gerais. The sparse information about this pest in the country indicated that P. pallidus had been observed previously only on grapes in southern Brazil. The presence of this pest in the country is relatively new, although in the USA and in some European countries it is already well known due to the economic losses it causes. The report of the occurrence of this herbivore, as well as the affected crops, is essential for the official institutions to take appropriate measures to prevent dispersion to other states. Future studies should be directed to the search for effective alternatives for the management of this pest, because currently there are no insecticides registered for control in Brazil. An alternative that could be considered is biological control.
Sumário
Phytonemus pallidus foi encontrado em cultivos de morango em 2 municípios pertencentes à zona da Mata Mineira. A pouca informação existente sobre esta praga indicava que P. pallidus estava presente apenas na cultura da videira no sul do Brasil. A presença desta praga no país é relativamente recente, já nos EUA e em alguns países da Europa ela é bem conhecida devido às perdas econômicas que pode ocasionar. O relato da ocorrência deste herbívoro nas diferentes regiões do país, bem como das culturas afetadas, é fundamental para que as instituições responsáveis tomem as medidas cabíveis para evitar a sua dispersão para outros estados da federação onde também se cultiva morango. Futuros estudos deveriam estar direcionados na busca de alternativas efetivas para o manejo adequado desta praga, uma vez que não há acaricidas registrados para o seu controle até o momento. Uma alternativa que poderia ser considerada é o controle biológico.
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- Fig. 1. Strawberry plant damaged by P. pallidus in the field. Arrows indicate typical "tanning" damage in leaves and fruits (A); strawberry plants infested by the phytophagous mite P. pallidus (B). Inset, a magnification showing the tanning on the fruits.
- Fig. 2. Calyx of strawberry fruit infested with P. pallidus mite (A); P. pallidus eggs (B); juveniles and adults on the surface of the calyx (C); Ventral view of a P. pallidus female under microscope (20x) (D); Idiosoma (40x) (E); Proterosoma (40x) (F).
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