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Otolith microchemistry and diadromy in Patagonian river fishes.
Alò, Dominique; Correa, Cristian; Samaniego, Horacio; Krabbenhoft, Corey A; Turner, Thomas F.
Afiliación
  • Alò D; Departamento de Ecología, Pontificia Universidad Católica de Chile, Santiago, Chile.
  • Correa C; Laboratorio de Ecoinformática, Instituto de Conservación Biodiversidad y Territorio, Universidad Austral de Chile, Valdivia, Los Ríos, Chile.
  • Samaniego H; Instituto de Conservación Biodiversidad y Territorio, Universidad Austral de Chile, Valdivia, Los Ríos, Chile.
  • Krabbenhoft CA; Laboratorio de Ecoinformática, Instituto de Conservación Biodiversidad y Territorio, Universidad Austral de Chile, Valdivia, Los Ríos, Chile.
  • Turner TF; Department of Biology and Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM, United States of America.
PeerJ ; 7: e6149, 2019.
Article en En | MEDLINE | ID: mdl-30627490
Coastal habitats in Chile are hypothesized to support a number of diadromous fish species. The objective of this study was to document migratory life histories of native galaxiids and introduced salmonids from a wide latitudinal range in Chilean Patagonia (39-48°S). Otolith microchemistry data were analysed using a recursive partitioning approach to test for diadromy. Based on annular analysis of Sr:Ca ratios, a diadromous life history was suggested for populations of native Aplochiton taeniatus, A. marinus, and Galaxias maculatus. Lifetime residency in freshwater was suggested for populations of A. zebra and G. platei. Among introduced salmonids, populations of Oncorhynchus tshawytscha and O. kisutch exhibited patterns consistent with anadromy, whereas the screened population of O. mykiss appeared restricted to freshwater. Salmo trutta exhibited variable patterns suggesting freshwater residency and possibly anadromy in one case. The capacity and geographic scope of hydropower development is increasing and may disrupt migratory routes of diadromous fishes. Identification of diadromous species is a critical first step for preventing their loss due to hydropower development.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: PeerJ Año: 2019 Tipo del documento: Article País de afiliación: Chile Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: PeerJ Año: 2019 Tipo del documento: Article País de afiliación: Chile Pais de publicación: Estados Unidos