Bioestadística como apoyo a la praxis pedagógica de la Zoología de invertebrados en la determinación de Rotíferos de hábitat planctónico en el ecosistema de la laguna del Parque Recreacional de la ciudad de Cúcuta, aplicando las claves dicotómicas para su clasificación.

The study involved the identification and classification of phylum specimens rotifers from planktonic habitat in the recreational lagoon park ecosystem in Cucuta City. Was made a topographic uprising to the lagoon, was distributed in eight areas and physicochemical water analyses were performed. Rotifers were collected and identified in two ways, first, using representative schemes of the most common genera, according to Barnes (1995), Gardiner (1978), Hickman (1995), Arteaga, Herrera (2005), Strebler and Krauter (1987 ) Iafrancesco (1997) and second, the systematic identification through the application of the dichotomous key to genera, according to James G. Needham And Paul R. Needham (1982). To characterize the presence of rotifers according to zones, we used the frequency distribution, at the rates: Jaccard (presence or absence), Raup-Crick index (similarity in relation to the areas) and Margalef index (for diversity). The lagoon water according to the physicochemical parameters and bioindication was classified as beta mesosapria, being secondary contact for recreational purposes. We found six families of rotifers: Brachionidae, Philodinidae, Notommatidae, Synchaetidae, Collotheidae, Lecanidae and ten genera Brachionus, Lepadella, Colurella, Philodina, Rotary, Cephalodella, Trichocerca, Polyartha, Collotheca and Lecane) and through the application of biostatistics rotifers were distributed according to areas. The procedures and photographic records developed in the study are a support material, for pedagogical praxis in rotifer phylum topic in invertebrate zoology