Brazil Sees Significant Surge in Non-Native Mollusk Species

A new study published in the journal *Biological Invasions* reveals a sharp rise in non-native mollusk species in Brazil, with researchers identifying at least 82 such species alongside 13 whose origins remain uncertain. This marks a 215% increase from 2011, when only 26 non-native mollusks were documented, underscoring a significant shift in the country’s biodiversity. The findings highlight growing concerns about invasive species and their potential ecological impacts, particularly in aquatic ecosystems where mollusks play critical roles.

The surge in non-native species is attributed to increased global trade, transportation, and human activity, which facilitate the unintentional introduction of organisms across borders. Scientists emphasize that the 13 species with indeterminate origins complicate conservation efforts, as their native habitats and ecological roles are unclear. Invasive mollusks can disrupt local food webs, outcompete native species, and alter water quality, posing risks to both ecosystems and industries reliant on aquatic resources. The study underscores the urgency of monitoring and managing these species to mitigate long-term environmental consequences.

Researchers call for enhanced surveillance and policy measures to address the growing presence of non-native mollusks in Brazil. They note that the rapid expansion of such species reflects broader global trends in biological invasions, driven by climate change and globalization. The study serves as a critical reference for policymakers and conservationists aiming to safeguard Brazil’s diverse ecosystems against the encroachment of invasive species.