INVESTIGADORES
LIBEROFF Ana Laura
artículos
Título:
Shifts in d15N signature following the onset of exogenous feeding in rainbow trout (Oncorhynchus mykiss): Importance of combining length and age data
Autor/es:
LIBEROFF, ANA LAURA; RIVA ROSSI, CARLA; MARILYN, FOGEL; CIANCIO, JAVIER; PASCUAL, MIGUEL
Revista:
JOURNAL OF FISH BIOLOGY
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2013 vol. 82 p. 1423 - 1432
ISSN:
0022-1112
Resumen:
The d15N isotopic change of recently emerged rainbow trout (Oncorhynchus mykiss) due to diet shift from yolk sac to exogenous feeding was evaluated in a field study. The fit of a general model including both fish length and age in days as co-variables indicates that the specific d15N of individual fish at any given time along the ontogeny is determined by its growth trajectory. The results suggest estimations based on fish size alone could bias data interpretation and maternal origin determinations in partially migratory salmonids.
