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Occurrence of the exotic freshwater snail Melanoides tuberculatus (Mollusca: Gastropoda: Thiaridae) in an estuary of north-eastern Brazil

Published online by Cambridge University Press:  03 June 2009

C.X. Barroso  and
H. Matthews-Cascon
C.X. Barroso*
Affiliation:
Laboratório de Invertebrados Marinhos, Departamento de Biologia, Centro de Ciências, Universidade Federal do Ceará, Campus do Pici–Bloco 909–CEP: 60455-760, Fortaleza, CE, Brazil
H. Matthews-Cascon
Affiliation:
Laboratório de Invertebrados Marinhos, Departamento de Biologia, Centro de Ciências, Universidade Federal do Ceará, Campus do Pici–Bloco 909–CEP: 60455-760, Fortaleza, CE, Brazil Instituto de Ciências do Mar, Universidade Federal do Ceará, Avenida Abolição, 3207–Meireles–Fortaleza, CE, Brazil, CEP: 60.165-08
*
Correspondence should be addressed to: C.X. Barroso, Laboratório de Invertebrados Marinhos, Departamento de Biologia, Centro de Ciências, Universidade Federal do Ceará, Campus do Pici–Bloco 909–CEP: 60455-760, Fortaleza, CE, Brazil email: [email protected]
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Abstract

Melanoides tuberculatus is an Afro-Asiatic thiarid, common in freshwater environments, now present in a wide portion of the tropical and subtropical regions of the New World. The present study had as its objective to register the occurrence of M. tuberculatus in the area of mangrove of the estuary of the Ceará River, verifying its density and the salinity which the specimens were submitted to verify its euryhalinity. Specimens of M. tuberculatus were collected in mangrove areas of the estuary of the Ceará River, located on the boundary of Caucaia and Fortaleza. Some specimens collected by hand in February 2006 were kept in an aquarium for a month. The abundance of M. tuberculatus in the studied areas varied from 0.76–10.22 individual/cm2. The salinity of the areas varied from 0–30 in the studied months. The presence of M. tuberculatus in these mangrove areas, whose salinity reached a peak of 30, and their survival in the laboratory, under a salinity of up to 35, prove the adaptation of this limnetic gastropod to euryhalinity.

Keywords

salinitymangroveCeará
Type
Research Article
Information
Marine Biodiversity Records , Volume 2 , January 2009 , e116
Copyright
Copyright © Marine Biological Association of the United Kingdom 2009

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