caa a22 4500 60622789X CHVBK 20210128101200.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s10641-015-0407-3 doi (NATIONALLICENCE)springer-10.1007/s10641-015-0407-3 First observations on annual massive upstream migration of juvenile catfish Trichomycterus in an Amazonian River [Elektronische Daten] [Guido Miranda-Chumacero, Gustavo Álvarez, Valentín Luna, Robert Wallace, Lilian Painter] Following flooding peaks in the Beni River, a massive upstream migration event involving juvenile pencil catfish (Trichomycterus barbouri) or chipi chipi is described for the first time. The annual migration begins in the floodplains of the Beni River, where enormous schools of juveniles form to travel upstream through the straits of the last foothills of the Andes into Andean foothill forest streams and rivers. Observations and local knowledge suggest a migration distance of at least 370km over an average of 32days in February and March with an average speed of 12km/day. The migrating juveniles weigh less than 0.38g and measure less than 33mm in standard length. As such, considering body length and body weight to distance travelled ratios they are one have one of the greatest migration efforts of any freshwater fish. Local people harvest juveniles across the migration route, but especially in Rurrenabaque, where they are considered a seasonal dish. This scientific revelation highlights the Amazon as a place where natural phenomena are still being discovered, described and documented in an era when hydroelectric infrastructure threatens the ecology of many aquatic ecosystems. Springer Science+Business Media Dordrecht, 2015 Migration route nationallicence Migration description nationallicence Pencil catfish nationallicence Juveniles nationallicence Foothills nationallicence Bolivia nationallicence Miranda-Chumacero Guido Wildlife Conservation Society, Greater Madidi Tambopata Landscape Conservation Program, La Paz, Bolivia aut Álvarez Gustavo Wildlife Conservation Society, Greater Madidi Tambopata Landscape Conservation Program, La Paz, Bolivia aut Luna Valentín Comunidad de San Miguel, TCO Tacana, La Paz, Bolivia aut Wallace Robert Wildlife Conservation Society, Greater Madidi Tambopata Landscape Conservation Program, La Paz, Bolivia aut Painter Lilian Wildlife Conservation Society, Greater Madidi Tambopata Landscape Conservation Program, La Paz, Bolivia aut Environmental Biology of Fishes Springer Netherlands 98/8(2015-08-01), 1913-1926 0378-1909 98:8<1913 2015 98 10641 https://doi.org/10.1007/s10641-015-0407-3 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/s10641-015-0407-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Miranda-Chumacero Guido Wildlife Conservation Society, Greater Madidi Tambopata Landscape Conservation Program, La Paz, Bolivia aut NATIONALLICENCE 700 1- Álvarez Gustavo Wildlife Conservation Society, Greater Madidi Tambopata Landscape Conservation Program, La Paz, Bolivia aut NATIONALLICENCE 700 1- Luna Valentín Comunidad de San Miguel, TCO Tacana, La Paz, Bolivia aut NATIONALLICENCE 700 1- Wallace Robert Wildlife Conservation Society, Greater Madidi Tambopata Landscape Conservation Program, La Paz, Bolivia aut NATIONALLICENCE 700 1- Painter Lilian Wildlife Conservation Society, Greater Madidi Tambopata Landscape Conservation Program, La Paz, Bolivia aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Springer Netherlands 98/8(2015-08-01), 1913-1926 0378-1909 98:8<1913 2015 98 10641