INVESTIGADORES
COLLINS Pablo Agustin
artículos
Título:
Feeding of Palaemonetes argentinus (Nobili) (Decapoda: Palaemonidae) in flood valley of river Parana Argentina
Autor/es:
COLLINS P.
Revista:
JOURNAL OF CRUSTACEAN BIOLOGY
Editorial:
CRUSTACEAN SOC
Referencias:
Año: 1999 vol. 19 p. 485 - 492
ISSN:
0278-0372
Resumen:
Feeding habits and selectivity of Palaemonetes argentinus were studied by examining the stomach contents of specimens from an oxbow lake throughout a year. Palaemonetes argentinus is omnivorous, feeding mainly on members of littoral benthic communities. The bulk of the stomach contents comprised algae, plant remains, oligochaetes, dipteran larvae, and a variety of organisms ranging from Rotifera to Palaemonidae. Zooplankton (rotifers, copepods, and cladocerans) were an alternative food source in winter, at low water, when macrophyte abundance had declined. In general, Oligochaeta and dipteran larvae were positively selected. Rotifera and microcrustaceans negatively, and algae indifferently, but with some variations depending on the seasons.
