Universidade de São Paulo (USP), Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ), Avenida Pádua Dias, 11, 13418-900 Piracicaba, SP, Brazil.
Universidade do Vale do Taquari - Univates, Laboratório de Acarologia, Avenida Avelino Tallini, 171, Universitário, 95914-014 Lajeado, RS, Brazil.
An Acad Bras Cienc. 2024 Sep 9;96(4):e20230500. doi: 10.1590/0001-3765202420230500. eCollection 2024.
In this work we reported injuries caused by the spider mite Oligonychus yothersi on Vitis vinifera leaves and we also investigate the sex ratio of this species under laboratory conditions. To access the aspects regarding reproduction, females were placed individually in arenas made of V. vinifera leaves to oviposit and all progeny were mounted on slides when they reached adulthood to confirm the offspring sex. Our study showed that O. yothersi reproduces by thelytokous /arrhenotokous parthenogenesis, generating low number of males. Additionally, we found vine plants with leaf browning, particularly on the adaxial surface, where mites were usually found.
在这项工作中，我们报告了葡萄叶片上叶螨 Oligonychus yothersi 造成的伤害，我们还在实验室条件下研究了该物种的性别比例。为了研究繁殖方面，我们将雌性个体单独放置在由葡萄叶片制成的竞技场中产卵，当所有后代成年后，我们将它们全部放在载玻片上以确认后代的性别。我们的研究表明，O. yothersi 通过孤雌生殖/产雌孤雌生殖进行繁殖，产生的雄性数量很少。此外，我们发现葡萄植株叶片出现黄化，特别是在叶片的上表面，通常可以在那里找到螨虫。
