Capparaceae do chaco brasileiro / Capparaceae of Brazilian chaco

Herpetofauna of the Argentinean Impenetrable Great Chaco

The Great Chaco is a region of nearly 1,000,000 km2 extended through the plains of Northern and central Argentina, Western Paraguay, Southeastern Bolivia, and the extreme Western edge of Mato Grosso do Sul state in Brazil (Pennington et al. 2000). Originally dominated by xerophytic semi-deciduous forests, the area has been extensively cleared for timber production and agriculture over the last ...

Meiotic behavior and chromosome number of Urochloa adspersa (Trin.) R. D. Webster from the Brazilian Chaco.

This is the first report of meiotic division in Uro-chloa adspersa (Trin.) collected from the Brazilian Chaco. Meiotic analyses were performed on three specimens of U. adspersa named G10, G15, and G16. Inflorescences were collected and fixed in a mixture of ethanol and acetic acid (3:1, v/v) for 24 h and then stored in 70% alcohol. Diakinesis revealed different chromosome numbers and ploidy lev...

Plant antiherbivore defenses in Fabaceae species of the Chaco.

The establishment and maintenance of plant species in the Chaco, one of the widest continuous areas of forests in the South American with sharp climatic variations, are possibly related to biological features favoring plants with particular defenses. This study assesses the physical and chemical defenses mechanisms against herbivores of vegetative and reproductive organs. Its analyses of 12 spe...

Review of Storytelling Globalization: From the Chaco and Beyond

[Seasonal fluctuation of Aedes aegypti in Chaco Province, Argentina].

OBJECTIVE To study the seasonal fluctuation of Aedes aegypti and to correlate its abundance with climate conditions. METHODS Samples were weekly collected in ovitraps in the city of Resistencia, Chaco Province, Argentina, between October 2002 and November 2003. The number of eggs collected was correlated with temperature, relative humidity, evaporation and rainfalls recorded. Pearson's correl...