Li Wenbo, Bashir Nawaz Haider, Naeem Muhammad, Tian Ruilin, Tian Xinyue, Chen Huanhuan
College of Biological Resource and Food Engineering, Qujing Normal University, Qujing 655011, China.
Key Laboratory of Biodiversity Conservationand Sustainable Utilization for College and University of Inner Mongolia Autonomous Region, College of Life Science and Technology, Inner Mongolia Normal University, Hohhot 010022, China.
Insects. 2024 Jul 1;15(7):493. doi: 10.3390/insects15070493.
Motschoulsky (Orthoptera: Pyrgomorphidae) has recently emerged as an important agricultural pest in China. Understanding the impact of temperature on its developmental period is crucial for predicting its population dynamics. This study systematically observed the biological characteristics of at five temperatures (16, 20, 24, 28, and 32 °C) using the age-stage, two-sex life table method. The effects of temperature on the developmental period, survival rate, and fecundity of were studied using fresh bean leaves as host. The results demonstrated that as temperature increased from 16 °C to 32 °C, the developmental period, preadult time, adult longevity, adult preoviposition period (APOP), and total preoviposition period (TPOP) significantly decreased. The developmental threshold temperatures for various stages were calculated, ranging from 10.47 °C to 13.01 °C, using the linear optimal method. As temperature increased, both the intrinsic rate of increase () and the finite rate of increase () also increased, while the mean generation time () decreased. The optimal values of the net reproductive rate ( = 54.26 offspring), gross reproductive rate ( = 185.53 ± 16.94 offspring), and fecundity (169.56 ± 9.93 eggs) were observed at 24 °C. Similarly, the population trend index () for peaked at 24 °C (61.64). Our findings indicate that exhibits its highest population growth rate at 24 °C, providing a scientific basis for predicting its population dynamics in the field.
摩氏螽斯（直翅目：瘤锥蝗科）最近在中国成为一种重要的农业害虫。了解温度对其发育历期的影响对于预测其种群动态至关重要。本研究采用年龄-阶段两性生命表方法，在五个温度（16、20、24、28和32℃）下系统观察了摩氏螽斯的生物学特性。以新鲜豆叶为寄主，研究了温度对摩氏螽斯发育历期、存活率和繁殖力的影响。结果表明，随着温度从16℃升高到32℃，发育历期、若虫期、成虫寿命、成虫产卵前期（APOP）和总产卵前期（TPOP）显著缩短。采用线性最优化方法计算了各虫态的发育起点温度，范围为10.47℃至13.01℃。随着温度升高，内禀增长率（rm）和周限增长率（λ）均增加，而平均世代时间（T）缩短。在24℃时观察到净生殖率（R0 = 54.26头后代）、总生殖率（GRR = 185.53 ± 16.94头后代）和繁殖力（169.56 ± 9.93粒卵）的最优值。同样，摩氏螽斯的种群趋势指数（I）在24℃时达到峰值（61.64）。我们的研究结果表明，摩氏螽斯在24℃时表现出最高的种群增长率，为预测其田间种群动态提供了科学依据。
