Multigenerational Effects of Short-Term High Temperature on the Development and Reproduction of the IZeugodacus cucurbitae/I

• Published in: Agriculture (Basel) Vol. 12; no. 7
• Main Authors: Zeng, Bei, Lian, Yuyang, Jia, Jingjing, Liu, Yang, Wang, Aqiang, Yang, Heming, Li, Jinlei, Yang, Shuyan, Peng, Sihua, Zhou, Shihao
• Format: Journal Article
• Language: English
• Published: MDPI AG 01-06-2022
• Subjects: Analysis; Global warming; China
• ISSN: 2077-0472; 2077-0472
• DOI: 10.3390/agriculture12070954

Zeugodacus cucurbitae is an important pest of fruit and vegetable crops in tropical and subtropical regions, and high-temperature stress can have different effects on the development and reproduction of successive generations of Z. cucurbitae. To clarify the multigenerational effects of short-time high temperature on the development and reproduction of Z. cucurbitae, the newly emerged adults of the contemporary (F[sub.1] generation) and the next generation (F[sub.2] generation) were exposed to short-term high temperatures of 25 °C, 33 °C, 37 °C, 41 °C, and 45 °C for 1 h, and the multigenerational (F[sub.1], F[sub.2], and F[sub.3] generation) effects of these temperatures on the development and reproduction of Z. cucurbitae were evaluated. The results showed that (1) when the F[sub.1] was exposed to short-term high temperature, the egg production and lifespan of the F[sub.1] decreased continuously with the increasing temperature, except for the 45 °C treatment for 1 h, which stimulated egg production. Only the 41 °C group had significantly higher egg production and lifespan than the control group in the F[sub.3]. (2) In the F[sub.1] and F[sub.2] that were exposed to short-term high temperature, the F[sub.1] and F[sub.3] were consistent with the results of F[sub.1] that were exposed to short-term high temperature. In conclusion, the effects of high-temperature intensity and frequency on multiple generations of Z. cucurbitae were different. The results of this study can elucidate the effects of short-term high-temperature stress on the growth, development, and reproduction of Z. cucurbitae in different generations, and provide a reference basis for the integrated control of Z. cucurbitae.