VOLPEDO Alejandra Vanina
Diet of tadpoles from a pond in Iguaz¨² National Park, Argentina.
ECHEVERRIA, D. D; VOLPEDO, A.V.; V.I.MASCITTI
Universidad de Concepci¨®n.
Lugar: Concepci¨®n, Chile; Año: 2007 vol. 71 p. 8 - 14
Gut contents of anuran larva (Elachistocleis bicolor, Chaunus schneideri, Odontophrynus americanus, Scinaxfuscovarius, and S. granulatus) that coexist in a semi-permanent waterbody from Iguaz¨² National Park (Misiones,Argentina) was analyzed. Our objective was analyse the gut contents of different tadpole species that coexist in thesame water body during seasons of minimum and maximum precipitation, to increase the knowledge of the naturalhistory of these tadpoles. Elachistocleis bicolor (obligate-suspension-feeder) it presents only planktonic algae in itsgut (92%). In gut of S. fuscovarius and S. granulatus (nektonic) planktonic algae were abundant, especially in therainy season (14 and 41%). The guts of C. schneideri and O. americanus (benthic) showed sediments (55% and17.5%) and vegetable fibers (33 and 61%). The largest particle size (< 100 ¦Ìm) was found in the guts of C. schneideri and the smallest (< 25 ¦Ìm) in O. americanus and E. bicolor.