Size distribution and sex ratio in the spider crab Epialtus brasiliensis (Dana 1852) associated with seaweed on a rocky shore in southeastern Brazil (Crustacea, Decapoda, Brachyura, Majoidea, Epialtidae).

This study analyzed a population of the spider crab Epialtus brasiliensis, in regard to its size distribution, sex ratio and Sexual maturity. The study was conducted on a rocky shore in the Ubatuba region, state of Silo Paulo, Brazil, where a wide strip of algae covers the intertidal zone. A total of 378 specimens were obtained: 200 males (128 juvenile and 72 adult crabs) and 178 females (46 juveniles and 132 adults). Their Sizes ranged from 3.4 to 16.7 mm carapace length (CL). Taking into account that the pubertal and terminal molts are coincident in majid crabs, the maximum sizes attained by males and females are especially dependent on the factors that influence sexual maturity, mainly food resources, temperature and intraspecific competition. Males of E. brasiliensis occurred in all size classes, whereas females occurred only as far the 10th size class (12-13 min CL). file total sex ratio did not differ statistically from 1 : 1, but when the juvenile and adult specimens were analyzed separately the differences between sexes were significantly different, with higher proportions of immature males and mature females. The CL50 calculated for males and females was 10.4, and 6.9 min CL, respectively. Thus, males reach their sexual maturity at a larger size than females. This feature may be important for the reproductive strategy of this species, because larger males probably have greater reproductive Success.

Fine needle aspiration biopsy of gastrointestinal stromal tumor presenting as an umbilical mass (Sister Mary Joseph's nodule)

The Sister Mary Joseph (SMJ) nodule is a clinical sign of metastatic cancer involving the umbilicus. The vast majority of these instances represent adenocarcinomas arising from ovarian or colorectal primaries. We present a patient who presented with ascites and the SMJ lesion that turned out to be a metastatic gastrointestinal stromal tumor after fine needle aspiration biopsy was performed. The lesion was subsequently histologically confirmed. Gastrointestinal stroma tumor involving the umbilicus is exceedingly uncommon and only rarely presents in this fashion. The cytomorphological features, differential diagnosis, and comparison with the tissue specimen are made. © 2006 Elsevier Inc. All rights reserved.

Violência na infância: Londrina (1930-1970)

Based on criminal processes regarding child sexual abuse from the early 1940s to the late 1970s, this article intents to analyze both the conception of innocence and childhood held at that time, and the influence of such on the local judiciary.

Población y mano de obra de Chile: 1930-1975

Incluye Bibliografía

Estimación de la migración interna neta, clasificada por edad y por sexo, en las provincias y regiones de Chile durante los años 1930-1940, 1940-1952 y 1952-1960

Incluye Bibliografía

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

Incluye Bibliografía

Breve analisis de las declaraciones por sexo y edad de los censos de poblacion de Chile de 1930, 1940, 1952 y 1960

Incluye Bibliografía

Urbanización y transición demográfica en América Latina: una reseña del período 1930-1990

Incluye Bibliografía

El comercio exterior de la Argentina y Australia entre 1930 y 1960 (I)

Documento en inglés ingresado en Biblioteca (88620)

El comercio exterior de la Argentina y Australia entre 1930 y 1960 (II)

Documento en inglés ingresado en Biblioteca (88622)

Foreign trade of Argentina and Australia, 1930 to 1960 (I)

Includes bibliography

Foreign trade of Argentina and Australia, 1930 to 1960 (II)

Includes bibliography

Ideology and development: Brazil, 1930-1964

Includes bibliography

Ideología y desarrollo: Brasil, 1930-1964

Incluye Bibliografía