Variation of stomach content and isotopic niche of puye Galaxias maculatus (Jenyns, 1842) in large river systems of southern Chile

• Published in: Freshwater biology Vol. 66; no. 6; pp. 1110 - 1122
• Main Authors: Manosalva, Aliro J., Pérez, Stefanía, Toledo, Bárbara, Colin, Nicole, Habit, Evelyn M., Górski, Konrad
• Format: Journal Article
• Language: English
• Published: Oxford Wiley Subscription Services, Inc 01.06.2021
• Subjects: Brackishwater environment; Connectivity; Diet; Ecosystem management; Estuaries; estuary; Fish; Fish conservation; Fish diets; Fish populations; Fisheries; Fishery resources; Floodplains; Food resources; Freshwater; Galaxias maculatus; galaxiids; Headwaters; Hydrology; Inland water environment; Isotopes; lake; Lakes; Niches; Plankton; Populations; Prey; River systems; Rivers; Spatial variations; Stable isotopes; Stems; Stomach; Stomach content; Strategic management; Terrestrial environments; Trophic structure; whitebait; Wildlife conservation; Zooplankton; Chile

Understanding of trophic structure and flow of energy within river systems is essential for informed management of these ecosystems and conservation of native fish fauna and fisheries resources. Food resources used by riverine fish depend on productivity within the main stem and adjacent floodplains...