La mortalidad en los primeros años de vida en países de América Latina: Perú, 1967-1968

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Ecuador: análisis de la encuesta de fecundidad urbana y rural realizada en el año 1967-1968

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Peru: estudio de la mano de obra femenina en dos centros urbanos, en diferentes etapas de desarrollo, Lima metropolitana e Iquitos (1966 y 1967)

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La mortalidad en los primeros años de vida en países de la América Latina: El Salvador, 1966-1967

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La mortalidad en los primeros años de vida en países de la América Latina: Paraguay, 1967-1968

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La mortalidad en los primeros años de vida en países de América Latina: Perú 1967-1968

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La mortalidad en los primeros años de vida en países de la América Latina; Nicaragua, 1966-1967

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Distribution of constitutive heterochromatin in two species of triatomines: Triatoma lenti Sherlock and Serafim (1967) and Triatoma sherlocki Papa, Jurberg, Carcavallo, Cerqueira & Barata (2002)

Triatoma lenti and Triatoma sherlocki are hemipterans that belong to the brasiliensis subcomplex. In triatomines, the constitutive heterochromatin pattern is species-specific and allows, in many cases, for the grouping of species. Thus, we cytogenetically analyzed T. sherlocki and T. lenti using C-banding, and we compared the results with previous ones obtained in other species of the brasiliensis subcomplex. Both species were found to have a male diploid chromosome number of 22 chromosomes (2n = 20A. +. XY) with heterochromatic blocks at one or both chromosomal ends of all autosomal pairs. During early meiotic prophase, they showed a large heteropycnotic chromocenter constituted by the association of both sex chromosomes plus two autosomal pairs and many heterochromatic blocks dispersed inside the nucleus. All of these cytogenetic characteristics are similar to those observed in other species of brasiliensis subcomplex, results which confirm the grouping of T. sherlocki and T. lenti within this subcomplex. However, we emphasize the importance of other approaches, such as molecular analysis, to confirm the placement of T. lenti within the brasiliensis subcomplex. © 2012 Elsevier B.V.

First record of Austroleon dispar Banks, 1909 (Neuroptera: Myrmeleontidae) from Brazil

The present note extends the geographic range of Austroleon dispar Banks, 1909 to Brazil based on the examination of three females and one male collected in the Estação Ecológica Jataí, Luiz Antônio, São Paulo. The present finding indicates that A. dispar is associated with dry ecosystems, at least in part of its geographic distribution. © 2013 Check List and Authors.