%0 Journal Article
%T Depredaci車n de ostr芍codos del Cuaternario del sur de la provincia de Buenos Aires, Argentina Depredation of Quaternary ostracods from southern Buenos Aires province, Argentina
%A Romina G Kihn
%A Dina E Martinez
%A Eduardo A G車mez
%J Revista del Museo Argentino de Ciencias Naturales
%D 2011
%I Museo Argentino de Ciencias Naturales Bernardino Rivadavia e Instituto Nacional de Investigaci車n de las Ciencias Naturales
%X En este trabajo se estudia la presencia de trazas f車siles en valvas de ostr芍codos que provienen de distintos paleoambientes del Cuaternario de la provincia de Buenos Aires, Argentina. Se analizaron 12.504 especimenes y se separ車 un total de 33 valvas perforadas. Se determinaron dos tipos de trazas f車siles que representan estructuras de depredaci車n: Oichnus simplex Bromley y Oichnus paraboloides Bromley, con m芍s del 60% del total de las perforaciones. El mayor porcentaje de valvas con evidencias de depredaci車n se registr車 en sedimentos de una laguna continental permanente con condiciones tr車ficas favorables y una alta densidad de ostr芍codos. No existe una correlaci車n entre el di芍metro de las perforaciones y el tama o de las valvas depredadas. Se registran evidencias de depredaci車n tanto en especies con valvas lisas como ornamentadas. The presence of fossil traces in ostracods valves from different quaternary palaeoenvironments in southern Buenos Aires province, Argentina, are studied in this paper. A number of 12500 specimens were analyzed and a total of 33 bored valves were separated. Two types of depredation fossil traces were determined: Oichnus simplex Bromley and Oichnus paraboloides Bromley, which comprised more than 60% of the total boreholes. The highest percentage of valves with evidence of predation (3.33%) was registered in sediments of a continental permanent lagoon with favourable trophic conditions and high density of ostracods. There was not relationship between the borehole diameter and the size of the predated valves. Evidences of depredation were registered in species with smooth valves as well as in species with adorned valves.
%K Ostr芍codos
%K Trazas f車siles
%K Depredaci車n
%K Cuaternario
%K Argentina
%K Ostracods
%K Fossil traces
%K Depredation
%K Quaternary
%K Argentina
%U http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1853-04002011000200007