Three Gorges Dam: the changing trend of snail density in the Yangtze River basin between 1990 and 2019.

ABSTRACT:

Background

The area of Oncomelania hupensis snail remains around 3.6 billion m², with newly emerging and reemergent habitats continuing to appear in recent years. This study aimed to explore the long-term dynamics of snail density before and after the operation of Three Gorges Dam (TGD).

Methods

Data of snail survey between 1990 and 2019 were collected from electronic databases and national schistosomiasis surveillance. Meta-analysis was conducted to estimate the snail density. Joinpoint model was used to identify the changing trend and inflection point. Inverse distance weighted interpolation (IDW) was used to determine the spatial distribution of recent snail density.

Results

A total of 3777 snail survey sites with a precise location of village or beach w

SUBMITTER: Gong Y 

PROVIDER: S-EPMC10142781 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature