Noronha A C S, Ferreira C T, Tavares E J M, Lima D B
Empresa Brasileira de Pesquisa Agropecuária (Embrapa Amazônia Oriental), Tv. Dr. Enéas Pinheiro s/n, Marco, Belém, PA, 66095-903, Brasil.
Escola Superior de Agricultura "Luiz de Queiroz" - ESALQ, Piracicaba, SP, Brasil.
Neotrop Entomol. 2018 Oct;47(5):591-597. doi: 10.1007/s13744-017-0550-y. Epub 2017 Aug 13.
Some species of spider mites belonging to the Tetranychidae family are known to associate with oil palm (Elaeis guineensis Jacq. - Arecaceae). The occurrence of Tetranychus palmarum Flechtmann & Noronha (Acari, Tetranychidae) was verified on oil palm seedlings under greenhouse conditions in the State of Pará in Northern Brazil. Plants with colonies of T. palmarum presented yellowish spots on leaflets and leaves with chlorosis. The objective of this study was to access the biology and fertility life table of T. palmarum in E. guineensis leaves. The experiment was conducted under four constant temperatures, 22, 25, 28, and 31°C, at 70 ± 10% RH under a 12:12 LD photoperiod. The duration of the egg-to-adult period was 18.4 and 9.8 days, at 22 and 31°C, respectively. The parameters of the fertility life table showed that 28°C is most suitable for the development and reproduction of T. palmarum, with higher values for reproductive parameters (R , r , and λ) and lower values for duplicating the population (TD). Therefore, it is apparent that the best temperature conditions for the development of T. palmarum are found in the warmer regions of Brazil, such as those observed in northern Brazil.
已知叶螨科的一些叶螨种类与油棕（油棕属，棕榈科）有关联。在巴西北部帕拉州的温室条件下，已证实棕榈叶螨（蜱螨亚纲，叶螨科）在油棕幼苗上出现。带有棕榈叶螨群体的植株在小叶和叶片上出现黄斑并伴有褪绿现象。本研究的目的是获取棕榈叶螨在油棕叶片中的生物学和繁殖力生命表。实验在四个恒定温度（22、25、28和31°C）、相对湿度70±10%以及12:12光暗周期条件下进行。在22°C和31°C时，卵到成虫期的持续时间分别为18.4天和9.8天。繁殖力生命表参数表明，28°C最适合棕榈叶螨的发育和繁殖，其繁殖参数（R 、r 和λ）值较高，而种群翻倍时间（TD）值较低。因此，很明显，棕榈叶螨发育的最佳温度条件出现在巴西较温暖的地区，如在巴西北部观察到的那些地区。
