01294naa a2200205 a 450000100080000000500110000800800410001910000140006024501020007426000090017650000250018552006850021065300130089565300150090870000180092370000180094170000230095970000210098277300850100319219562013-02-21       2012    bl ---       0--  u    #d1 aRIBAS, C.  aGiant otters feeding on caimanbevidence for an expanded trophic niche of recovering populations.  c2012  aShort communication.  aAs water along dirt roads in the Pantanal floodplains diminishes, aquatic fauna becomes restricted to shallow pools. At the end of the 2009 dry season, we filmed giant otters living in pools predating on yacare caimans. Such predation has not been recorded in giant otters inhabiting the Pantanal. Individual otters captured sub-adultcaimans. The otters did not share the prey, but conspecifics stole it after conflicts. Caiman predation could be related to resource scarcity in these marginal environments. Information on diet and interactions of endangered populations may underestimate their trophic niche when they recover from over-hunting and expand into suboptimal habitat.  aAriranha  aFoodplains1 aDAMASCENO, G.1 aMAGNUSSON, W.1 aLEUCHTENBERGER, C.1 aMOURAO, G. de M.  tStudies on Neotropical Fauna and Environmentgv. 47, n. 1, p. 19-23, april 2012.