Revolucionarios y bandidos: La trayectoria villista en la Revolución Mexicana

In the last decades of the 19 th century the Mexican society went through a period of political and economical stability, and relative social tranquility. On contrast, during the revolutionary context various armed movements promoted the disruption of this status quo. In this article, by the analysis of several testimonies, I intend to show some aspects regarding criminality and violence phenomena, during the 1910 and 1920 years on the Northern Mexico.

Ecology and morphological characterization of gametophyte and 'Chantransia' stages of Sirodotia huillensis (Batrachospermales, Rhodophyta) from a stream in central Mexico

The morphology and phenology of Sirodotia huillensis was evaluated seasonally in a central Mexican first-order calcareous stream. Water temperature was constant (24-25°C) and pH circumneutral to alkaline (6.7-7.9), and calcium and sulfates were the dominant ions. The gametophyte stages were characterized by the presence of a distinctive mucilaginous layer, a marked difference in phycocyanin to phycoerythrin ratio between female and male plants, and the presence of a carpogonia with a large trichogyne (>60 μm). Occasionally three capogonia were observed on a single basal cell. The 'Chantransia' stages were morphologically similar to those described for the other members of Batrachospermales. A remarkable observation was the formation of dome-shaped structures, consisting of prostrate filaments that are related with the development of new gametophytes. Chromosome numbers were n = 4 for fascicle cells, cortical filament cells and dome-shaped cells, and 2n = 8 for gonimoblast filament cells and 'Chantransia' stage filaments. Gametophytes and 'Chantransia' stages occurred in fast current velocities (60-170 cm/s) and shaded (33.1-121 μmol photons/m2/s) stream segments. The population fluctuated throughout the study period in terms of percentage cover and frequency: the 'Chantransia' stages were most abundant in the rainy season, whereas gametophytic plants had the highest frequency values during the dry season. These results were most likely a result of fluctuations in rainfall and related changes in current velocity. Some characteristics of this population can be viewed as probable adaptations to high current velocities: the mucilaginous layer around plants that reduces drag; potential increase in fertilization by the elongate and plentiful trichogynes and abundant dome-shaped structures producing several gametophytes.

Foreign Investment in Latin America and the Caribbean 2003

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Financial crises in "successful" emerging economies

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Implementing trade policy in Latin America: the cases of Chile and Mexico

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The transformation of the North American apparel industry: is NAFTA a curse or a blessing?

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The international competitiveness of the Costa Rican clothing industry

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Foreign investment in Mexico after economic reform

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¿Es correcto vincular la política social a la informalidad en México?: una prueba simple de las premisas de esta hipótesis

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Medición del impacto de los acuerdos de libre comercio en América Latina: el caso de México

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El debate sobre el sector agropecuario mexicano en el Tratado de Libre Comercio de América del Norte

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El efecto del TLCAN sobre las importaciones agropecuarias estadounidenses provenientes de México

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Mexico: economic growth, exports and industrial performance after NAFTA

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The political economy of Mexico's dollarization debate

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Competencia y regulación de las telecomunicaciones: el caso de Honduras

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