Search

The continental aquatic systems constitute environments of relevance for the human being due to the different benefits and services that they provide to society. The introduction of exotic species constitutes a threat to native fauna due to competition for food resources, excessive predation or genetic alterations. The Asian clam Corbicula fluminea has spread throughout the Americas, Africa and Europe, encompassing a great diversity of freshwater ecosystems. This species has various associated problems and its report is essential since it provides useful information to the authorities to develop management strategies that allow evaluating and mitigating the impact on the populations of native aquatic organisms. [ABSTRACT FROM AUTHOR]

Copyright of Revista Mexicana de Biodiversidad is the property of Universidad Nacional Autonoma de Mexico, Instituto de Biologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

A gastropod and ostracod fauna from Agua Verde river locality, Catamarca, is described and included in the Andalhuala Formation, dated as 5.22 ± 0.9 Ma (Lower Pliocene). The following taxa of gastropods were identified: Biomphalaria straminea (Dunker), Physa cf. acuta Draparnaud, Chilina fluminea (Maton), Lymnaea aff. viatrix d’Orbigny, Succinea aff. meridionalis d’Orbigny, Heleobia sp. y Potamolithus aff. lapidum (d’Orbigny), associated in the same assemblage with the ostracods Cyprideis sp. cf. C. salebrosa hartmanni Ramirez, 1967, Cyprideis sp., Cypridopsis sp. cf. C. vidua (O. F. Müller) and Cyamocytheridea? sp. The association reflects a shallow, small fresh water body, with some water level variations, developed in a warm-humid climate of the Neotropical Region. [ABSTRACT FROM AUTHOR]