Cytotaxonomic analysis of Brazilian species of the genus Amazona (Psittacidae, Aves) and confirmation of the genus Salvatoria (Ribeiro, 1920)

The karyotypes of 12 species of Psittacidae of the genus Amazona were studied: A. aestiva, A. amazonica, A. brasiliensis, A. autumnalis, A. farinosa, A, festiva, A. kawalli, A. ochrocephala, A. pretrei, A. rhodocorytha, A. vinacea and A. xanthops. The metaphases were obtained using a short term culture of leather pulp. Eleven of the twelve analyzed species were karyotypically homogeneous, with only a few divergences in chromosomes 2 and 3. The species A. xanthops showed large karyotypic differences compared to the genus Amazona. Consequently, the genus Salvatoria (Ribeiro, Rev. Mus. Paul. 12: 1-82, 1920) was confirmed, and A. xanthops renamed Salvatoria xanthops. The study showed the chromosomic conservation of the genus Amazona and the need for further taxonomic studies of the karyotype of the Psittacidae.

ZOEAL MORPHOLOGY OF PACHYGRAPSUS-GRACILIS (SAUSSURE, 1858) (DECAPODA, GRAPSIDAE) REARED IN THE LABORATORY

The larval development of Pachygrapsus gracilis was studied in the laboratory under conditions of 25-degrees-C temperature and 20, 24, 28, 32 and 34 parts per thousand salinity. The objective of the study was to characterize the plankton phase of life of this species.

Imigração e teorias antropólogicas no Brasil (1910-1920)

Brazil takes pride in its alleged lack of racial discrimination. These idealized racial relations are a construction of enlightened elites. This article analyzes one of the main cultural publications in the country in order to establish how European anthropological theories were interpreted by Brazilian intelectuals. In the reappraisal of the country proposed in the journal, the ethnic question was intensely discussed. A whitening of the population was generally perceived as a sort of magic solution to the contradictions in a multiracial, heterogeneous and rigidly hierarchic society. This natural process might be accelerated by an inflow of European immigration. The many expectations and tensions surrounding immigration were expressed in the construction of categories of desirable and undesirable immigrants. Thereof an ideal white country emerged, far away from the myth of racial democracy, which has not materialized in Brazilian society today.

A new species of Hemigrammus Gill, 1858 (Characiformes: Characidae) from Río Caura, Venezuela

A new characid species, Hemigrammus taphorni, is described from the Río Caura drainage, Venezuela. The new species is distinguished from its congeners by characters related to its color pattern, number of scale rows below the lateral line, teeth morphology, and dorsal-fin length. A brief discussion about the putative relationships of H. taphorni is provided. Copyright © 2007 Magnolia Press.

Alimentação de Serrasalmus maculatus (Kner, 1858) (characiformes; serrasalmidae) no trecho inferior bacia do rio Sorocaba, São Paulo, Brasil

The aim of this study was to discuss aspects of the diet of Serrasalmus maculatus. Fish were collected using gill nets, whose lengths measured 100 m and mesh diameters varied from 3 to 8 cm. A total of 107 individuals were collected. Their length varied from 62 to 210 mm. They were mainly represented by female and immature individuals. No individual was caught in temperatures below 21°C. Four feeding item categories were observed: fish muscle pieces, parts of fish fins, plant fragments, and insects. Comparisons made among individual length classes revealed some significant differences within stomach consumed contents. Individuals whose length exceeded 165 mm consumed only parts of fish muscles and plants. The food availability in the environment and the class lengths amplitude may, however, have influenced the results, in which ontogenetic differences should not be precisely observed.

A Renovação do Currículo do Ensino Secundário no Brasil: as últimas batalhas pelo humanismo (1920-1960

The text analyzes the debates put forward in the defense for a humanist curriculum in the Brazilian secondary schools me the period from 1920 and 1960. Basing on the articles published in the periodic of national circulating and texts by educators who problematize the question f humanism as the orientation guide for the curriculum, the text highlights the positions of the intellectuals connected to the Catholic Churcho beside the thoughts of the secondary school teachers and the intellectuals of the progressive tendency. The analyses also show how the humanism notion is going to be transformed along the twentieth century and how this notion was enrooted in the Brazilian culture.

Raúl Prebisch: bibliografía de su obra entre 1920 y 1986

La recopilación incluye materiales existentes tanto en la Biblioteca CEPAL/ILPES como en otras bibliotecas de Santiago y Argentina, así como también en la Sección Archivos de CEPAL.

Argentina y el mercado mundial de sus productos, 1920-1976

Incluye Bibliografía

Zammara smaragdula walker, 1858 (hemiptera: Cicadidae): First record for Brazil

The present note reports the first record for Brazil of the cicada Zammara smaragdula Walker, 1858 (Hemiptera, Cicadidae, Zammarini). This new record brings the number of reported Cicadidae species for Brazil to 153, including three species in the genus Zammara. © 2011 Check List and Authors.

Aspectos morfométricos de Ceraeochrysa paraguaria (Navás, 1920) (Neuroptera: Chrysopidae) alimentada com diferentes presas

Ceraeochrysa paraguaria do not has its life history well known, despite its description do not be recent. The present work aimed to evaluate morphometric aspects of C. paraguaria larvae were feeding on Diatraea saccharalis, Sitotroga cerealella e Anagasta kuehniella eggs with the objective to determine the mandibule length, head capsule length, torax + head length, and larvae weight. By the results it was possible to conclude: to the morphometrical parameters, only larvae weight was influenced by the food consumed by the predator, being the nymphal development shorter.

Division of labor in pachycondyla striata Fr. Smith, 1858 (Hymenoptera: Formicidae: Ponerinae)

Four colonies of the ant Pachycondyla striata were used to analyze the specie behavioral repertoire. Forty-six behavioral acts were recorded in laboratory. Here, we present the record the division of labor between the castes and the temporal polyethism of monomorphic workers. The queens carried out many of the behavioral traits recorded in this work however; they performed them less frequently compared to the worker. The workers activity involved chasing and feeding on fresh insects and usingthem to nourish larvae besides laying eggs in the C-posture, an activity also performed by queens, which is similar to that of wasps of the subfamily Stenogastrinae. The young workers were involved in activities of brood care, sexuate care, and nest maintenance, and the older workers were involved in defense, exploration, and foraging. © 2012 Adolfo da Silva-Melo and Edilberto Giannotti.

La mortalidad en Chile según las tablas de vida de 1920, 1930, 1940, 1952-1960

Incluye Bibliografía