Matías A. Morales

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In this work, chromosome numbers and karyotype parameters of 36 taxa of the genus Mimosa were studied, especially from the southern South America center of diversification. Results support that x = 13 is the basic chromosome number in the genus. Polyploidy is very frequent, ca. 56 % of the total of the studied species here are polyploid, confirming that(More)
BACKGROUND The finding of an important proportion of cases of hepatitis C without previous contact with blood or hemoderivates has led to suspect that there may be other routes of transmission among which sexual transmission may be found. METHODS The presence of antibodies against the hepatitis C virus (anti-HCV) and the association of this infection with(More)
The purpose of this research was to demonstrate the dependant relationship between the Argentine ant Linepithema humile Mayr, plant coverage, and human settlements. A method was designed in order to sample the presence of the Argentine ant and other ant species that may had influenced L. humile distribution, under different types of vegetation and(More)
A new species of Mimosa section Mimosa, Mimosa eurystegia, which is apparently endemic to Paraná in southern Brazil, is described and illustrated. This species is distinguished by plurinerved leaflets and papyraceous, plurinerved, orbicular, amplexicaul stipules. Morphological distinctiveness of this new Mimosa and its relationships with allied species are(More)
In this paper we explore the role that exchange rate interventions may play in determining inflation expectations in Chile. To that end, we consider a set of nine deciles of inflation expectations coming from the survey of professional forecasters carried out by the Central Bank of Chile. We consider two episodes of preannounced central bank interventions(More)
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