Feeding of Acetes paraguayensis (Nobili) (Decapoda: Sergestidae) from the Paraná River, Argentina

COLLINS P.; WILLINER V.

HYDROBIOLOGIA

Kluwer Academic Publishers

Lugar: Netherlands; Año: 2003 vol. 493 p. 1 - 6

0018-8158

Feeding habits of Acetes  paraguayensis (Hansen) were studied by examining the stomach content of specimens from two lakes. A. paraguayensis is omnivorous, feeding mainly on members of littoral-benthic and lotic communities. Algae, rotifers and microcrustaceans (copepods and cladocerans) are the more frequent items in the bulk of the stomach content. Oligochaeta and Diptera larvae were and alternative food source when available. Shrimp feeding habits difference between the two lakes may be due to the source availability. A. paraguayensis are trophic linkers between limnetic and lotic habits with an important role in the transportation of energy from the floodplain to the principal channel in the Paraná Rivers Systems.