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Effect of temperature on reproduction, development, and phenotypic plasticity of Drosophila suzukii in Brazil
Entomologia Experimentalis et Applicata ( IF 1.9 ) Pub Date : 2020-08-13 , DOI: 10.1111/eea.12954
Daniele C.H. Schlesener 1 , Jutiane Wollmann 1 , Alexandra P. Krüger 1 , Liliane N. Martins 1 , Cristiano M. Teixeira 1 , Daniel Bernardi 1 , Flavio R.M. Garcia 1, 2
Affiliation  

Temperature is a determining factor for the development and establishment potential of insect pests. The present study describes the impact of temperature (13, 18, 23, 25, 28, 30, and 33 °C) on the life cycle parameters and phenotypic plasticity of South American populations of Drosophila suzukii (Matsumura) (Diptera: Drosophilidae) in the laboratory. Secondary objectives were to determine the lower thermal threshold and thermal constant to estimate the number of annual generations of the insect in small‐fruit‐producing regions in Brazil. The highest egg‐to‐adult survival was recorded at 23 and 25 °C. At 30 and 33 °C, no emergence of D. suzukii was observed. The egg‐to‐adult development time was shortest at 25 and 28 °C (ca. 10 days). The net reproductive rate (R0), and the intrinsic rate of population increase (rm) were highest at 23 and 25 °C. In contrast, temperatures of 13 and 28 °C generated largest and smallest body sizes, respectively, and caused reductions of 99 and 93% in R0. The estimated lower thermal threshold was 7.8 °C for egg‐to‐adult survival. The estimated thermal constant was 185.8 degree days, and the estimated annual number of generations of D. suzukii ranged from 17.1 in cold regions to 27.2 in warm regions. The results of the present study are important for understanding D. suzukii occurrence in the field, contributing to more informed and precise pest management.

中文翻译:

温度对巴西铃木果蝇繁殖、发育和表型可塑性的影响

温度是害虫发育和定殖潜力的决定性因素。本研究描述了温度(13、18、23、25、28、30 和 33 °C)对南美 Drosophila suzukii(Matsumura)(双翅目:果蝇科)种群生命周期参数和表型可塑性的影响实验室。次要目标是确定较低的热阈值和热常数,以估计巴西小水果产区昆虫的年世代数。在 23°C 和 25°C 下记录了最高的卵到成虫存活率。在 30 和 33 °C 下,没有观察到 D. suzukii 出现。鸡蛋到成虫的发育时间在 25 和 28 °C 时最短(约 10 天)。净繁殖率 (R0) 和内在人口增长率 (rm) 在 23 和 25 °C 时最高。相比之下,13°C 和 28°C 的温度分别产生最大和最小的身体尺寸,并导致 R0 降低 99% 和 93%。估计的较低热阈值是 7.8°C,用于鸡蛋到成人的存活。估计的热常数为 185.8 度日,估计 D. suzukii 的年代数从寒冷地区的 17.1 到温暖地区的 27.2 不等。本研究的结果对于了解 D. suzukii 在田间发生的情况很重要,有助于更明智和精确的害虫管理。D. suzukii 的估计年代数从寒冷地区的 17.1 到温暖地区的 27.2 不等。本研究的结果对于了解 D. suzukii 在田间发生的情况很重要,有助于更明智和精确的害虫管理。D. suzukii 的估计年代数从寒冷地区的 17.1 到温暖地区的 27.2 不等。本研究的结果对于了解 D. suzukii 在田间发生的情况很重要,有助于更明智和精确的害虫管理。
更新日期:2020-08-13
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