数字农科院2.0

Population Dynamics And Life History Of Locusta Migratoria Tibetensis Chen In Lhasa River

文献类型： 外文期刊

作者： Jyoti, B; Shali, Y; Zhang, ZH; Yao, XO; Deng, J; Zhang, YL; Wang, CL; Li, Y; Lei, XP; Wang, WF; Hassan, MF; Li, C

作者机构：

关键词： Locusta Migratoria Tibetensis Chen; Population Dynamics; Life History; Spatial Distribution Pattern

期刊名称： PAKISTAN JOURNAL OF ZOOLOGY

ISSN： 0030-9923

年卷期： 2020 年 52 卷 3 期

页码：

收录情况： JCR（2021版）

摘要： The Locusta migratoria tibetensis Chen is one of the most destructive pests in Tibetan region. To effectively control their spreading, a clear understanding on the species traits is necessary. In this study, the population dynamics, life history and spatial distribution pattern of L. m. tibetensis Chen were explored on meadow and farmland of the Tibetan plateau during 2012. The first objective of this study was to investigate the population dynamic and life history of this pest on their outbreak sites. The second objective was to analyze the spatial distribution pattern of L. m. tibetensis Chen on both meadow and farmland. The lowest and highest population densities in meadow were recorded in early May and mid June respectively whereas in farmland lowest was recorded in late June and highest was in early June. The average population density in meadow was 3.1 m(-2) and in farmland was 4.52 m(-2). Reproduction takes place during summer (June/July), generating two incomplete generations a year in meadow and one generation a year in farmland. The Iwao's M*-m regression analysis, Taylor's power law and aggregation cause analysis showed an aggregated distribution pattern for L. m. tibetensis Chen. It is concluded that insect behavior and environmental conditions co-influence the population density and spatial distribution pattern of this pest.

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