Primer hallazgo de Pseudorasbora parva (Temminck & Schlegel, 1846) (Cyprinidae) en la Cuenca Sur de España

Abstract

First record of Pseudorasbora parva (Temminck & Schlegel, 1846) (Cyprinidae) in the Cuenca Sur of Spain Pseudorasbora parva Temminck & Schlegel (Cyprinidae, subfamily Gobioninae), an invasive Asian fish, has been found in the Cuenca Sur (Hozgarganta and Guadiaro rivers) for the first time thanks to the field works for the assessment of native aquatic fauna and for the early detection of invasive species. These works are being conducting by the Environmental Council (Regional Government of Andalusia). In this work, potential introduction routes and associated biological impacts on native fish species are evaluated, and suggestions for the design of future management strategies are presented. It is expected that P. parva will disperse through other neighbor watercourses and basins. There might be also a risk of transmission of two alien parasites (Sphaerotecum destruens y Anguillicola crassus) to the populations of native fish species. The introduction route for P. parva in the Cuenca Sur is unknown. However, it is likely that the species was first introduced as forage fish to promote angling species such as Micropterus salmoides ,a lready present in the rivers, and thus invade connected water bodies. Eradication or control through direct population management seems unfeasible. Therefore, future management measures focused on monitoring and management of native fish populations are proposed as well as the development of awareness campaigns involving all the stakeholders.