Trace elements as fingerprint of lake of Provenance and of species of some native and exotic fish of northern Patagonian lakes

• Published in: Biological trace element research Vol. 111; no. 1-3; pp. 71 - 95
• Main Authors: Arribére, M A, Guevara, S Ribeiro, Bubach, D F, Vigliano, P H
• Format: Journal Article
• Language: English
• Published: United States Springer Nature B.V 2006
• Subjects: Animals; Argentina; Catfishes - metabolism; Fish; Fishes - metabolism; Fresh Water - analysis; Freshwater; Indigenous species; Lakes; National parks; Oncorhynchus mykiss; Oncorhynchus mykiss - metabolism; Parks & recreation areas; Perches - metabolism; Salmo trutta; Trace elements; Trace Elements - analysis; Trace Elements - metabolism; Trout; Argentina; Patagonia; Argentina, Neuquen, Nahuel Huapi Natl. Park
• ISSN: 0163-4984; 0163-4984; 1559-0720
• DOI: 10.1385/BTER:111:1:71

A survey of trace element contents in fish muscle and liver was performed in different lakes of two northern Patagonian national parks: Nahuel Huapi and Los Alerces national parks. The aim of the work was to obtain the first set of reference data on elements that are not liable to be disturbed by human activities and to identify compositional patterns related to the species and site of collection. The species studied are native creole perch and velvet catfish and exotic brown trout, rainbow trout, and brook trout. The elements analyzed are Br, Cs, Fe, Rb, Se, Na, and Zn. Trace elements in muscle of brown trout, rainbow trout, and creole perch showed statistical patterns that allow one to identify the national park of origin, as well as which of the lakes (Traful, Espejo Chico, or the Nahuel Huapi-Moreno system) of the Nahuel Huapi National Park from which they come. Contents in the liver provide similar but less clear patterns than contents in muscle; however, in some particular cases, they provide additional information. Trace element contents in muscle are also good indicators of the species collected within a lake.