Como a temperatura afeta a dinâmica populacional de Tenuipalpus heveae (Acari, Tenuipalpidae) em clones de seringueira?

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Author(s): SILVA, G. V.; PINTO, N. S.; SANTOS, R. S.; DAUD, R. D.

Summary: No presente estudo foi avaliado o efeito temperatura sobre a dinâmica populacional de Tenuipalpus heveae Baker em cinco clones de seringueira. O estudo foi conduzido de novembro de 2018 a janeiro de 2019 no jardim clonal de seringueiras do campo experimental da Embrapa Acr,e Rio Branco, estado do Acre, nos clones CPAA C18, FDR 5788, FX 3899, PB 312 e RRIM 600. Semanalmente foram retiradas, aleatoriamente, oito folhas do terço inferior da copa de quatro plantas de cada clone. Os ácaros coletados foram montados em lâminas de microscopia em meio de Hoyer. A relação entre a temperatura média e a abundância de T. heveae foi testada por meio de um modelo linear generalizado com distribuição de Poisson. Foi amostrado um total de 2.909 ácaros em 6.720 folíolos analisados. Observou-se um efeito negativo da temperatura sobre a abundância de T. heveae. In the present study, the effect of temperature on the population dynamics of Tenuipalpus heveae Baker in five rubber tree clones was evaluated. The study was conducted from November 2018 to January 2019 in the rubber tree clonal garden of the experimental field of Embrapa Acre, municipality of Rio Branco, state of Acre, Brazil in the clones CPAA C18, FDR 5788, FX 3899, PB 312 and RRIM 600. Eight leaves were randomly removed weekly from the lower third of the canopy of four plants of each clone. The collected mites were mounted on microscope slides in Hoyer?s medium. Thus, the relationship between mean temperature and T. heveae abundance was tested using a generalized linear model with Poisson?s distribution. A total of 2,909 mites were sampled from 6,720 leaflets analyzed. A negative effect of temperature on T. heveae abundance was observed.

Publication year: 2021

Types of publication: Journal article

Unit: Embrapa Acre

Observation

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