نتایج جستجو برای: bellamya bengalensis

تعداد نتایج: 397  

Journal: :Water 2022

Freshwater gastropods play key roles in shallow aquatic ecosystems, with a central position the periphyton–gastropod–fish trophic pathway, as they feed on periphyton and are preyed by animals of higher levels. Thus, it is great interest to explore how climate change impacts gastropod community cascading effects periphyton. Here, we constructed simplified, lake food web 24 large mesocosm tanks s...

Journal: :Parasitology 2015
Jahashi Nzalawahe Ayub A Kassuku J Russell Stothard Gerald C Coles Mark C Eisler

The epidemiology of trematode infections in cattle was investigated within highland and lowland areas of Iringa Rural District, in southern Tanzania. Fecal samples were collected from 450 cattle in 15 villages at altitudes ranging from 696 to 1800 m above the sea level. Freshwater snails were collected from selected water bodies and screened for emergence of cercariae. The infection rates in ca...

Journal: :Journal of environmental sciences 2010
Shiqun Han Shaohua Yan Kaining Chen Zhenhua Zhang Rengel Zed Jianqiu Zhang Wei Song Haiqin Liu

15N isotope tracer techniques and ecological modeling were adopted to investigate the fractionation of nitrogen, its uptake and transformation in algae and snail (Bellamya aeruginosa Reeve). Different algal species were found to differ in their uptake of nitrogen isotopes. Microcystis aeruginisa Kütz. demonstrated the greatest 15N accumulation capacity, with the natural variation in isotopic ra...

Journal: :Journal of environmental management 2017
Danielle M Haak Brian D Fath Valery E Forbes Dustin R Martin Kevin L Pope

Network analysis is used to address diverse ecological, social, economic, and epidemiological questions, but few efforts have been made to combine these field-specific analyses into interdisciplinary approaches that effectively address how complex systems are interdependent and connected to one another. Identifying and understanding these cross-boundary connections improves natural resource man...

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