The introduced snail Melanoides Tuberculatus (Muller, 1774) (Mollusca: Thiaridae) in aquatic ecosystems of the Brazilian semiarid Northeast (Piranhas-Assu River basin, State of Rio Grande do Norte)

Records of the gastropod Melanoides tuberculatus (Müller, 1774), family Thiaridae, in the Piranhas-Assu River basin in Rio Grande do Norte reveal the dispersal of this native Southeast Asian and East African species into aquatic environments of the Brazilian semiarid region, including artificial env...

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Bibliographic Details
Published in:Brazilian journal of biology 2010-02, Vol.70 (1), p.1-7
Main Authors: Santos, C M, Eskinazi-Sant'Anna, E M
Format: Article
Language:English
Subjects:
Animals
BIOLOGY
Brasilian semiarid
Brazil
Ecosystem
Environmental Monitoring
Freshwater
Gastropoda
invasor species
Melanoides
Melanoides tuberculatus
Population Density
Population Dynamics
Rivers
Snails - classification
Snails - physiology
Thiaridae
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Description
Summary:Records of the gastropod Melanoides tuberculatus (Müller, 1774), family Thiaridae, in the Piranhas-Assu River basin in Rio Grande do Norte reveal the dispersal of this native Southeast Asian and East African species into aquatic environments of the Brazilian semiarid region, including artificial environments (reservoirs) and lotic systems. The eutrophic conditions of the local waterbodies appear to favor the present situation, where this invasive species reaches extremely high densities, sometimes over 10,000 ind x m(-2) as in Armando Ribeiro Gonçalves Reservoir. These observations indicate the immediate need for new studies on the spatial distribution of the species and its potential impact on the biodiversity and water quality of the waterbodies of the semiarid region of the state. Implantation of regular and systematic monitoring of the aquatic resources of the region is urgently required.
ISSN:1519-6984
1678-4375
1678-4375
1519-6984
DOI:10.1590/S1519-69842010000100003