005370000a2200169000450024501010000065000170010165000270011865000100014565000180015565300400017365300280021365300340024104100130027570000220028810000190031077300380032910aVariation in the demography of guppy populations: the importance of predation and life histories14aDemografía14aDinámica poblacional14aPeces14aDepredación gPoeciliaePoecilia reticulatavgupi gRivuluseRivulus hartii gCrenicichlaeCrenicichla alta0 aInglés1 aReznick, David N.1 aRodd, F. Helen1 tEcology357h2q405-418d1997g78