The aim of this paper is to determine the chronology of the information on papilionid and pierid butterflies of Mexico, as well as the patterns of collection and who were the most active collectors freom a curatorial databases and bibliography.…

Since the first description of the disease now known as Wolff-Parkinson-White syndrome, much knowledge has been gained through several experimental and clinical studies all over the world. The Instituto Nacional de Cardiología Ignacio Chávez in Mexco City has not been…

Guaiacum unijugum is a rare shrub endemic to a 70 km stretch of coastline extending east from San José del Cabo in Baja California and is the least well-known of the 4 species of Guaiacum in Mexico. To increase our…

The aim of this paper is to determine the chronology of the information on papilionid and pierid butterflies of Mexico, as well as the patterns of collection and who were the most active collectors freom a curatorial databases and bibliography.…

The actual knowledge about the freshwater algae of Mexico is very uneven from various points of view, despite its recognized potential as indicators of environmental conditions and to be the basal part of trophic chains in aquatic environments. The largest…

The present dissertation postulates the dead body as a cultural signifier in which it is possible to read social, political, ethical, and aesthetic meanings and practices during the first half of twentieth century Latin America. Drawing from a close examination…

14 species were determined. The knowledge of this genus in the states of Chihuahua, Distrito Federal, Estado de Mexico, Guanajuato, Guerrero, Michoacán, Nayarit, Oaxaca, Querétaro and Tlaxcala is widened. A sinoptical key is provided for the species cited from Mexico,…

The knowledge about ants of arid zones of Mexico is very poor. For this reason we assessed the biodiversity of this taxon in 2 sites with different vegetation structure. Ten pitfall traps were placed in each site, and 2 surveys…

Knowledge of the population dynamics of tropical trees has expanded considerably in the past 20 years. An important observation deriving from these investigations is the confirmation that population behaviour varies both in time and space. A tool recently developed to…

Cette étude explore le rôle occupé par la figure du Métis, en tant que symbole fondateur du nationalisme Mexicaine de la période postrévolutionnaire (1921 – 1945). La recherche s’organise en fonction de trois pôles : 1) les discours littéraires autour…