Development of Bradysia odoriphaga (Diptera: Sciaridae) as affected by humidity: an age-stage, two-sex, life-table study
文献类型: 外文期刊
第一作者: Yang, Yuting
作者: Yang, Yuting;Li, Chuanren;Yang, Yuting;Li, Wenxiang;Xie, Wen;Wu, Qingjun;Xu, Baoyun;Wang, Shaoli;Zhang, Youjun;Li, Wenxiang
作者机构:
关键词: Life table;Bradysia odoriphaga;Humidity
期刊名称:APPLIED ENTOMOLOGY AND ZOOLOGY ( 影响因子:1.403; 五年影响因子:1.381 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: The gnat Bradysia odoriphaga Yang et Zhang (Diptera: Sciaridae) is an important pest of Chinese chive (Allium tuberosum Rottler ex Sprengel). Although B. odoriphaga outbreaks are thought to depend on soil humidity, the mechanism by which humidity affects the outbreaks is poorly understood. In this study, the life history of B. odoriphaga (Diptera: Sciaridae) on Chinese chive was studied with an age-stage, two-sex life table and with relative humidity (RH) at 50, 60, 70, or 80 %. The developmental time of eggs and larvae, total preoviposition duration, and total preadult duration were longer at 50 % RH than at higher RH values. The mean total preadult duration was 34.16 days at 50 % RH and ranged from 27.34 to 31.81 days at 60-80 % RH. The mean fecundity was significantly higher at 70 % RH (as high as 62.88 eggs/female) than at 50, 60, or 80 % RH (from 33.41 to 50.52 eggs/female). The intrinsic capacity of increase (r), net production rate (R (0)), and finite rate of increase (lambda) increased as RH increased from 50 to 80 %, and mean generation time (T) showed the opposite trend. This study provides insight into the phenology of B. odoriphaga and shows that high RH promotes outbreaks of B. odoriphaga.
分类号: Q96
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