Películas de partículas minerais sobre a oviposição da mosca-do-mediterrâneo em laboratório

Abstract

Resumo. Com o intuito de testar a tecnologia de película de partículas minerais com produtos existentes no mercado brasileiro, este trabalho avaliou a ação de caulim e calcário líquido na oviposição de Ceratitis capitata (Wiedemann) (Diptera: Tephritidae). Foram realizados ensaios de laboratório com maçãs e mangas, onde os frutos foram submetidos a pulverizações com caulim e calcário líquido (20% produto + água + espalhante adesivo Break Thru ® ) e controles (água e água + o espalhante adesivo) e expostos, individualmente, em gaiolas contendo dez fêmeas de C. capitata, alimento e água. Após 24 horas, os frutos foram removidos das gaiolas e decorridas mais 24 horas, removia-se a película mineral e contava-se as o número de puncturas nestes. A média de puncturas registradas nos frutos dos controles, em maçãs e em mangas foi maior do que a dos frutos tratados. Caulim e calcário líquido não diferiram entre si nos dois experimentos. Em condições de laboratório, os produtos testados impediram a oviposição das moscas, reduzindo a infestação nos frutos.Palavras-Chave: Ceratitis capitata; caulim; calcário líquido; Diptera; proteção de frutos. Minerals particles films on mediterranean fruit fly oviposition in laboratory assaysAbstract. In order to test the technology of mineral particle film with products existing in the Brazilian market, this work evaluate the action of kaolin and limestone liquid on Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) oviposition. Laboratory tests were carried out with apples and mangoes, where the fruits were sprayed with kaolin and liquid limestone (20% product + water + Break Thru ® adhesive) and controls (water and water + adhesive spreader) and individually exposed in cages containing ten C. capitata females, food and water. After 24 hours, the fruits were removed from the cages and after another 24 hours, the mineral film was removed and the number of punctures counted therein. The mean number of punctures recorded in the fruits of controls, apples and mangoes was higher than that of treated fruits. Kaolin and liquid limestone did not differ between the two experiments. Under laboratory conditions, the tested products prevented the oviposition of the flies, reducing infestation in the fruits.

Influence of Mineral Particle Films and Biomaterials on Guava Fruits and Implications for the Oviposition of Anastrepha obliqua (Macquart) (Diptera: Tephritidae)

“…In general, it was verified that the 200 g L −1 suspension inhibited oviposition in choice and non-choice tests. Inhibition of oviposition of C. capitata was also obtained with the use of kaolin (Inducal ® ) and calcareous liquid, applied at the same concentration, in apple and mango fruits [ 71 ]. However, it was observed that 50% of the particle film-based biomaterials in the choice and non-choice tests did not protect the fruits from oviposition by A. obliqua .…”

Mineral and natural films change the physical–chemical properties of grapes and modulate oviposition behaviour of Ceratitis capitata Wiedemann (Diptera: Tephritidae)

“…In this case, the greatest inhibition was achieved with Surround ® , ~19 and 9 times the number of punctures with eggs and number of eggs, respectively. In a suspension at 200 g L −1 , kaolin and liquid limestone applied to apple and mango fruits resulted in an inhibition of C. capitata oviposition (Ourique et al ., 2017). The average number of punctures in apples and mangoes was 7 to 8 times and 3 times lower, respectively, when treated with both products.…”