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在具有不同pH值的人工饲料上饲养两种果蝇害虫。

Rearing two fruit flies pests on artificial diet with variable pH.

作者信息

Dias N P, Nava D E, Smaniotto G, Garcia M S, Valgas R A

机构信息

Departamento de Fitossanidade, Universidade Federal de Pelotas - UFPel, Campus Universitário, Avenida Eliseu Maciel, s/n, CEP 96010-900, Pelotas, RS, Brasil.

Embrapa Clima Temperado, Rodovia BR-392, Km 78, 9º Distrito, Monte Bonito, CEP 96010-970, Pelotas, RS, Brasil.

出版信息

Braz J Biol. 2019 Jan-Mar;79(1):104-110. doi: 10.1590/1519-6984.179347. Epub 2018 Apr 23.

Abstract

Fruit flies (Diptera: Tephritidae) are considered the main fruit pests worldwide. In Brazil, two species are predominant: the South American fruit fly, Anastrepha fraterculus and the Mediterranean fruit fly, Ceratitis capitata. In this study, we evaluated the effect of artificial diets with variable pH in their larval development and adult performance. The experiments were carried out in the laboratory at 25 ± 2 °C, 70 ± 10% RH and 12:12h (L:D) photoperiod. Semisolid diets with pH values of 6.0, 5.0, 4.0, 3.0, 2.0, 1.5, and 1.0, adjusted by adding hydrochloric acid were tested. Results indicated that the diet with pH 6.0 did not support larval development of both species of fruit fly. Diets with greater acidic pH values did not allow egg, larvae or pupae development and adult reproduction of A. fraterculus. For C. capitata , the pH of artificial diet exerts greater influence compared to A. fraterculus on the duration and viability of the larval stage, number of pupae, sex ratio and longevity of males.

摘要

果蝇(双翅目:实蝇科)被认为是全球主要的水果害虫。在巴西,有两种果蝇占主导地位:南美果蝇,即纳氏按实蝇和地中海实蝇,即地中海实蝇。在本研究中,我们评估了不同pH值的人工饲料对其幼虫发育和成虫性能的影响。实验在实验室中进行,温度为25±2°C,相对湿度为70±10%,光周期为12:12小时(光照:黑暗)。测试了通过添加盐酸调节pH值至6.0、5.0、4.0、3.0、2.0、1.5和1.0的半固体饲料。结果表明,pH值为6.0的饲料不支持这两种果蝇的幼虫发育。酸性更强的pH值饲料不允许纳氏按实蝇的卵、幼虫或蛹发育以及成虫繁殖。对于地中海实蝇,与纳氏按实蝇相比,人工饲料的pH值对幼虫期的持续时间和活力、蛹的数量、性别比和雄性寿命的影响更大。

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