M\u00e9todos para el muestreo, extracci\u00f3n, procesamiento, e identificaci\u00f3n de meiofauna. M\u00e1s informaci\u00f3n sobre el uso de meiofauna en investigaciones aplicadas, como evaluaciones de impacto ambiental<\/p>\n
Muestreo<\/strong><\/p>\n Sampling can take two forms either Quantitative or Qualitative. Typically meiofauna are heterogeneously distributed so a larger number of small samples are generally better than few large samples. Before you start sampling be sure to establish a sampling regime appropriate to answering your hypothesis. Also be sure that your replicates are replicates and not pseudoreplicates. Also consider whether you require live or fixed specimens, the identification of some groups, Turbellaria for example, is easier with live specimens. Meiofauna will survive for a reasonable length of time in the sample container, however be sure to remove large macrofauna before transport or they will consume all the oxygen in the sample. Most researchers use formalin (5-10%) for fixing samples.<\/p>\n Quantitative<\/em><\/p>\n Muestreo cuantitativo de playas de arena expuestas<\/a><\/p>\n Muestreo cuantitativo de planicies marinas<\/p>\n Muestreo cuantitativo de playas rocosas<\/p>\n Sustratos artificiales<\/a><\/p>\n Qualitative<\/em><\/p>\n Muestreo cualitativo de ambientes sedimentales<\/p>\n Muestreo cualitativo de playas rocosas<\/p>\n Extracci\u00f3n<\/strong><\/p>\n The methods for extracting meiofauna from the sampled habitat depends on whether the meiofauna are alive or dead. Many meiofaunal groups have mechanisms, such as the duo-gland system, for position maintenance. When the sample contains live fauna the extraction methodology needs a stage which either negates their position maintenance strategy (osmotic shock or anesthetisation) or forces them to move out of the habitat (Uhlig\u2019s method). With fixed samples most extraction methodologies rely on the different settling rates of the meiofauna and the substrate.<\/p>\n Extracci\u00f3n de meiofauna usando decantaci\u00f3n simple<\/a><\/p>\n Extracci\u00f3n de meiofauna usando la t\u00e9cnica flotaci\u00f3n con Ludox<\/a><\/p>\n M\u00e9todo de Uhlig con hielo de agua de mar<\/p>\n Anestesia con cloruro de magnesio isotonico<\/a><\/p>\n M\u00e9todo de choque\u00a0osm\u00f3tica con agua dulce<\/a><\/p>\n Procesamiento<\/strong><\/p>\n Fijaci\u00f3n con formalina<\/p>\n Fijaci\u00f3n con formalina Fluido de Bouin<\/p>\n