Institute of Geography & Earth Sciences, Aberystwyth University, Aberystwyth, United Kingdom ; Biomedical and Environmental Sciences Thematic Group, Ifakara Health Institute, Ifakara, Tanzania.
PLoS One. 2013 Dec 3;8(12):e81931. doi: 10.1371/journal.pone.0081931. eCollection 2013.
Larval source management is a promising component of integrated malaria control and elimination. This requires development of a framework to target productive locations through process-based understanding of habitat hydrology and geomorphology.
We conducted the first catchment scale study of fine resolution spatial and temporal variation in Anopheles habitat and productivity in relation to rainfall, hydrology and geomorphology for a high malaria transmission area of Tanzania.
Monthly aggregates of rainfall, river stage and water table were not significantly related to the abundance of vector larvae. However, these metrics showed strong explanatory power to predict mosquito larval abundances after stratification by water body type, with a clear seasonal trend for each, defined on the basis of its geomorphological setting and origin.
Hydrological and geomorphological processes governing the availability and productivity of Anopheles breeding habitat need to be understood at the local scale for which larval source management is implemented in order to effectively target larval source interventions. Mapping and monitoring these processes is a well-established practice providing a tractable way forward for developing important malaria management tools.
幼虫源管理是综合疟疾控制和消除的一个有前途的组成部分。这需要通过对生境水文学和地貌学的基于过程的理解，开发一个针对生产性地点的框架。
我们对坦桑尼亚一个高疟疾传播地区的蚊媒栖息地和生产力进行了第一次基于流域尺度的精细分辨率时空变化的研究，与降雨、水文学和地貌学有关。
每月的降雨量、河流水位和地下水位的总和与媒介幼虫的丰度没有显著的关系。然而，这些指标在按水体类型分层后，对预测蚊子幼虫丰度具有很强的解释能力，每种指标都有明确的季节性趋势，这是基于其地貌设置和起源来定义的。
为了有效地针对幼虫源干预，需要在实施幼虫源管理的地方了解控制疟蚊滋生地的可得性和生产力的水文和地貌过程。对这些过程进行测绘和监测是一种成熟的做法，为开发重要的疟疾管理工具提供了可行的途径。
