Occurrence of microplastics in freshwater gastropods from a tropical river U-Taphao, southern Thailand.

Background: Microplastics (MPs) are pollutants in rivers and marine environments. Rivers can be sources and sinks of MPs that enter the biota. Previous studies focusing on freshwater species are quite limited, especially for gastropods.

Invasion of African Drives Genetic Erosion of the Indigenous in Bangladesh.

The African catfish has been introduced for aquaculture in Bangladesh due to the scarcity of indigenous fingerlings. However, the government of Bangladesh has banned the farming of due to the carnivorous nature of this species. Recently has been reported by fish farmers and consumers in Bangladesh, and unplanned hybridization between native and exotic species has been suspected.