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首页> 外文期刊>Journal of Economic Entomology >Thermal requirements and development of Herpetogramma phaeopteralis (Lepidoptera: Crambidae: Spilomelinae)
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Thermal requirements and development of Herpetogramma phaeopteralis (Lepidoptera: Crambidae: Spilomelinae)

机译：球形疱疹的热学要求和发育（鳞翅目：:科：螺旋藻）

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摘要

The tropical sod webworm, Herpetogramma phaeopteralis Guene is a major turfgrass pest in the southeastern United States. We evaluated larval development on five artificial diets and at six temperatures (15, 20, 25, 30, 32.5, 35 ± 1°C) on St. Augustinegrass (Stenotaphrum secundatum (Walter) Kuntze). Only larvae fed St. Augustinegrass and soy-wheat germ diets completed their lifecycles. None of the artificial diets tested (corn-based, soy-wheat germ, corn cob-wheat germ, corn cob-soy flour, or pinto bean) were suitable for rearing this species, because of high mortality and slower developmental time. Total developmental time (oviposition to adult) on S. secundatum significantly decreased from 47.8 d at 20°C to 21.1 d at 30°C, and then increased to 32.6 d at 32.5°C. Tropical sod webworm failed to complete larval development at 15 and 35°C. The relationship between temperature and developmental rate was described using linear (common and polynomial) and nonlinear models (Briere-1, Briere-2, and Lactin-2). The estimated lower temperature thresholds using a linear model for eggs, first, second, third, fourth, fifth, and sixth instars, prepupa, pupa, and total development were 10.1, 6.9, 12.3, 10.5, 15.3, 13.9, 9.1, 13.1, 12.0, and 13.1°C, and the thermal constant of these stages were 62.9, 66.2, 38.2, 40.3, 24.9, 32.3, 51.9,106.4,109.9, and 370.4 degree-days, respectively. The Briere-1 model provided the best fit with estimated lower, upper, and optimum thresholds for total development of 14.9, 34.3, and 29.4°C, respectively. The developmental requirements of H. phaeopteralis can be used to help predict the distribution and seasonal phenology of this pest.
机译：热带草皮网虫Herpetogramma phaeopteralis Guene是美国东南部的一种主要草皮害虫。我们评估了五种人工饮食和圣奥古斯丁草（Stenotaphrum secundatum（Walter）Kuntze）在六个温度（15、20、25、30、32.5、35±1°C）下的幼虫发育。只有以圣奥古斯丁草和大豆小麦胚芽为食的幼虫才完成其生命周期。由于高死亡率和较慢的发育，经测试的人工日粮（玉米基，大豆-小麦胚芽，玉米芯-小麦胚芽，玉米芯-大豆粉或斑豆）均不适合饲养该物种。沙门氏菌的总发育时间（成虫产卵）从20°C的47.8 d显着减少到30°C的21.1 d，然后在32.5°C时增加到32.6 d。热带草网蠕虫未能在15和35°C下完成幼体发育。使用线性（公共和多项式）和非线性模型（Briere-1，Briere-2和Lactin-2）描述温度与发育速率之间的关系。使用线性模型估算的卵，第一，第二，第三，第四，第五和第六龄，pu 、,和总发育的较低温度阈值分别为10.1、6.9、12.3、10.5、15.3、13.9、9.1、9.1、13.1，这些阶段的热常数分别为12.0和13.1°C，分别为62.9、66.2、38.2、40.3、24.9、32.3、51.9、106.4、109.9和370.4度日。 Briere-1模型提供了最佳拟合，估计的最低，最高和最佳阈值分别为14.9、34.3和29.4°C。蝶翅目的发育要求可以用来帮助预测该害虫的分布和季节性物候。

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