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What Do We Know About Non-Native, Invasive, and Transplanted Aquatic Mollusks in South America?
Gustavo Darrigran1, Carlos Belz2, Alvar Carranza3
1Division Zoología Invertebrados, Museo de La Plata, FCNyM-CONICET, Paseo del Bosque s/n, La Plata 1900, Argentina.
Biology
|February 26, 2025
Summary
This study compiles data on introduced aquatic mollusks in South America, identifying 41 non-native and 18 transplanted species. It highlights the economic impact of Limnoperna fortunei and health risks from Lymnaeidae and Thiaridae, aiding bioinvasion management.
Area of Science:
- Ecology
- Invasive Species Biology
- Aquatic Ecosystems
Background:
- Introduced species are major drivers of biodiversity change, causing significant environmental, economic, and social impacts.
- Aquatic mollusks are ecologically vital, influencing food webs, nutrient cycling, and habitats, and are crucial to aquaculture.
- Information on mollusk introductions in South America is scarce, often limited to grey literature, hindering effective management.
Purpose of the Study:
- To consolidate and expand knowledge on non-native and transplanted mollusks, particularly aquatic species, in South America.
- To provide policymakers with data for identifying bioinvasion patterns and strengthening management strategies.
- To serve as a resource for preventing future introductions and transplants.
Main Methods:
- A collaborative effort since 2016 involving 29 specialists from seven South American countries.
- Compilation of expertise, data, and bibliographic resources on introduced mollusk species.
- Identification of non-native and transplanted aquatic mollusk species in South American aquatic environments.
Main Results:
- Identified 41 non-native and 18 transplanted mollusk species in South American aquatic environments.
- Highlighted the bivalve Limnoperna fortunei as having the greatest economic impact.
- Noted gastropod families Lymnaeidae and Thiaridae as significant health concerns.
Conclusions:
- This research represents a significant advancement in understanding mollusk bioinvasions in South America.
- Challenges remain, including a scarcity of taxonomic studies and under-investigated regions.
- The compiled information is crucial for researchers, policymakers, and the public in addressing mollusk bioinvasions.
