caa a22 4500 606226699 CHVBK 20210128101154.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s10641-014-0274-3 doi (NATIONALLICENCE)springer-10.1007/s10641-014-0274-3 Assessing population status of Parachondrostoma arrigonis (Steindachner, 1866), threats and conservation perspectives [Elektronische Daten] [Carles Alcaraz, Gerard Carmona-Catot, Pilar Risueño, Silvia Perea, Cristina Pérez, Ignacio Doadrio, Enric Aparicio] Biodiversity is currently declining in the Mediterranean, particularly in freshwater ecosystems. The Iberian Peninsula is not an exception with many fish species threatened or endangered. This is the case of Parachondrostoma arrigonis, which has experienced a marked reduction of more than 80% in both number and area of occupancy in the last 20years. Species historical records showed a widespread distribution in the Júcar Basin, but according to recent records, P. arrigonis was completely absent in the main river course, being restricted to only some tributaries. Current fish distribution was grouped into only seven fish population nuclei geographically isolated among them. Only two population nuclei showed with well-developed fish populations. Factors affecting P. arrigonis distribution are associated to human activities, such as river channelization, flow regulation, pollution and habitat degradation, being concentrated in the middle and lower river reaches where the Júcar nase is in marked regression. Another key factor was the presence of introduced species, reporting a strong spatial segregation with the translocated Pseudochondrostoma polylepis, an ecologically similar species, and with the exotic piscivorous Micropterus salmoides and Esox lucius, which are currently occupying most of the P. arrigonis historical range. Because its dramatic situation, conservation measures must be urgently taken, for instance, by establishing conservation areas, an exotic fish removal programme, and by developing a flow regulation program to minimize dam effects. However it is necessary to increase our knowledge regarding the habitat requirements of the Júcar nase and its interactions with invasive species. If measures are not implemented its extinction seems inevitable. Springer Science+Business Media Dordrecht, 2014 Fish conservation nationallicence Invasive species nationallicence Water management nationallicence Cyprinidae nationallicence Júcar nase nationallicence Iberian Peninsula nationallicence Alcaraz Carles IRTA Aquatic Ecosystems, Carretera Poble Nou Km 5.5, 43540, Sant Carles de la Ràpita, Catalonia, Spain aut Carmona-Catot Gerard Institute of Aquatic Ecology, University of Girona, 17071, Girona, Catalonia, Spain aut Risueño Pilar Centro de Investigación Piscícola de El Palmar. Conselleria de Infraestructuras, Territorio y Medio Ambiente, Generalitat Valenciana, 46011, Valencia, Spain aut Perea Silvia Museo Nacional de Ciencias Naturales, Departamento de Biodiversidad y Biología Evolutiva, José Gutiérrez Abascal 2, 28006, Madrid, Spain aut Pérez Cristina Facultad de Ciencias Agrarias y Ambientales, Universidad de Salamanca, 37007, Salamanca, Castilla León, Spain aut Doadrio Ignacio Museo Nacional de Ciencias Naturales, Departamento de Biodiversidad y Biología Evolutiva, José Gutiérrez Abascal 2, 28006, Madrid, Spain aut Aparicio Enric Institute of Aquatic Ecology, University of Girona, 17071, Girona, Catalonia, Spain aut Environmental Biology of Fishes Springer Netherlands 98/1(2015-01-01), 443-455 0378-1909 98:1<443 2015 98 10641 https://doi.org/10.1007/s10641-014-0274-3 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10641-014-0274-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Alcaraz Carles IRTA Aquatic Ecosystems, Carretera Poble Nou Km 5.5, 43540, Sant Carles de la Ràpita, Catalonia, Spain aut NATIONALLICENCE 700 1- Carmona-Catot Gerard Institute of Aquatic Ecology, University of Girona, 17071, Girona, Catalonia, Spain aut NATIONALLICENCE 700 1- Risueño Pilar Centro de Investigación Piscícola de El Palmar. Conselleria de Infraestructuras, Territorio y Medio Ambiente, Generalitat Valenciana, 46011, Valencia, Spain aut NATIONALLICENCE 700 1- Perea Silvia Museo Nacional de Ciencias Naturales, Departamento de Biodiversidad y Biología Evolutiva, José Gutiérrez Abascal 2, 28006, Madrid, Spain aut NATIONALLICENCE 700 1- Pérez Cristina Facultad de Ciencias Agrarias y Ambientales, Universidad de Salamanca, 37007, Salamanca, Castilla León, Spain aut NATIONALLICENCE 700 1- Doadrio Ignacio Museo Nacional de Ciencias Naturales, Departamento de Biodiversidad y Biología Evolutiva, José Gutiérrez Abascal 2, 28006, Madrid, Spain aut NATIONALLICENCE 700 1- Aparicio Enric Institute of Aquatic Ecology, University of Girona, 17071, Girona, Catalonia, Spain aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Springer Netherlands 98/1(2015-01-01), 443-455 0378-1909 98:1<443 2015 98 10641