Soh Bernard Steve Baleba, Kekeunou Sevilor, Nanga Nanga Samuel, Dongmo Michel, Hanna Rachid
International Institute of Tropical Agriculture Yaoundé Cameroon.
Laboratory of Zoology Faculty of Science University of Yaoundé 1 Yaoundé Cameroon.
Ecol Evol. 2018 Nov 11;8(23):11819-11832. doi: 10.1002/ece3.4639. eCollection 2018 Dec.
The cabbage aphid, is a pest of many plants of the Brassicaceae family including cabbage, Linnaeus, 1753. We investigated the effect of temperature on the biological parameters of using different temperature-based models incorporated in the Insect Life Cycle Modelling (ILCYM) software. Nymphs of first stage were individually placed in the incubators successively set at 10°C, 15°C, 20°C, 25°C, 30°C, and 35°C; 75 ± 5% RH; and L12: D12-hr photoperiods. We found that first nymph reached the adult stage after 18.45 ± 0.04 days (10°C), 10.37 ± 0.26 days (15°C), 6.42 ± 0.07 days (20°C), 5.076 ± 0.09 days (25°C), and 5.05 ± 0.10 days (30°C), and failed at 35°C. The lower lethal temperatures for were 1.64°C, 1.57°C, 1.56°C, and 1.62°C with a thermal constant for development of 0.88, 0.87, and 0.08, 0.79 degree/day for nymphs I, II, III, and IV, respectively. The temperatures 10, 30, and 35°C were more lethal than 15, 20, and 25°C. Longevity was highest at 10°C (35.07 ± 1.38 days). Fertility was nil at 30°C and highest at 20°C (46.36 ± 1.73 nymphs/female). The stochastic simulation of the models obtained from the precedent biological parameters revealed that the life table parameters of were affected by the temperature. The net reproduction rate was highest at 20°C and lowest at 30°C. The average generation time decreased from 36.85 ± 1.5 days (15°C) to 6.86 ± 0.1 days (30°C); the intrinsic rate of increase and the finite rate of increase were highest at 25°C. In general, the life cycle data and mathematical functions obtained in this study clearly illustrate the effect of temperature on the biology of . This knowledge will contribute to predicting the changes that may occur in a population of in response to temperature variation.
甘蓝蚜是十字花科许多植物的害虫，包括甘蓝，由林奈于1753年命名。我们使用昆虫生命周期建模（ILCYM）软件中纳入的不同基于温度的模型，研究了温度对甘蓝蚜生物学参数的影响。将初龄若虫分别置于依次设定为10°C、15°C、20°C、25°C、30°C和35°C的培养箱中；相对湿度75±5%；光周期为12小时光照：12小时黑暗。我们发现，一龄若虫在18.45±0.04天（10°C）、10.37±0.26天（15°C）、6.42±0.07天（20°C）、5.076±0.09天（25°C）和5.05±0.10天（30°C）后发育为成虫，在35°C时发育失败。甘蓝蚜一、二、三、四龄若虫的低温致死温度分别为1.64°C、1.57°C、1.56°C和1.62°C，发育的热常数分别为0.88、0.87、0.08和0.79度日。10°C、30°C和35°C的温度比15°C、20°C和25°C更具致死性。寿命在10°C时最长（35.07±1.38天）。繁殖力在30°C时为零，在20°C时最高（46.36±1.73头若虫/雌蚜）。根据先前生物学参数获得的模型进行随机模拟，结果表明甘蓝蚜的生命表参数受温度影响。净繁殖率在20°C时最高，在30°C时最低。平均世代时间从36.85±1.5天（15°C）降至6.86±0.1天（30°C）；内禀增长率和有限增长率在25°C时最高。总体而言，本研究获得的生命周期数据和数学函数清楚地说明了温度对甘蓝蚜生物学的影响。这些知识将有助于预测甘蓝蚜种群可能因温度变化而发生的变化。
