Projeto raia de fogo: aspectos populacionais da raia de fogo (Dasyatis marianae Gomes, Rosa & Gadig, 2000) e pesca de elasmobrânquios no complexo recifal do Parracho de Maracajaú

The species Dasyatis marianae inhabits coastal areas associated with coral reefs, considered endemic to the northeast of Brazil, occurring from the State of Maranhão to the south of Bahia. Specimens of this species are commonly sighted by divers and fishermen in the area of Maracajaú reefs, a complex reef that is part of the Environmental Protection Area of Coral Reefs (EPACR), which was developed in this study about the ecology and biology of the D. marianae, in order to characterize aspects of population structure in the area of the reef complex of Parracho de Maracajaú. We analyzed 120 specimens caught by artisanal fishing site of the size, weight, sex, stage of maturity and stomach contents. Most subjects were adult males (1.7:1) and was more abundant for rays with lengths between 25 and 29cm of LD, where females reach larger sizes, a feature common to other rays. The largest specimens were captured in the area of seagrass, which is preferred for the species. The distribution of species in the area showed an ontogenetic and sexual segregation, where the youthful occur near the beach, which is a likely area for nursery and growth of the adult females prevail in the seagrass, which apparently has a high prey availability, and Adult males are more distant, a higher proportion occurring in outlying areas, suggesting a habit more exploratory than the females. The evaluation of the reproductive system indicated 3 reproductive cycles per year, one young per pregnancy, and showed that the mature males were smaller than females. The cubs of D. marianae size at birth 12 to 15cm LD. As for diet, the species was characterized as carnivorous crustacean specialist. The performance of visual censuses in different localities allowed to evaluate the density of D. marianae in different environments of the complex. The species occurs in greater numbers in seagrass, environment very important for the conservation of the species. 100 individuals of D. marianae marked in reef complex area enrolled in a recapture rate of 3%. Some behavioral aspects were evaluated, as diurnal pattern of activity, interaction with cleaning and fish Pomacanthus paru followers as Lutjanus analis and Carangoides bartholomaei. Overall, much of the information obtained should be used for management of the species

Comparative study on extracts from the tissue covering the stingers of freshwater (Potamotrygon falkneri) and marine (Dasyatis guttata) stingrays

Stingrays are elasmobranchs found along the seacoast and in some rivers of Brazil. Pain is the most conspicuous symptom observed in patients wounded by the bilaterally retroserrate stingers located in the tail, which are covered by glandular and integument tissues. In addition, cutaneous necrosis is commonly observed in injuries caused by freshwater stingrays. The aim of this work was to characterize and compare certain properties of tissue extracts obtained from the glandular tissues covering the stinger apparatus of Potamotrygon falkneri and Dasyatis guttata stingrays. By sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), tissue extracts have similar bands above 80kDa, but most differences were observed below this molecular mass. Lethal, dermonecrotic and myotoxic activities were detected only in P. falkneri tissue extract. Edematogenic activity was similar and dose dependent in both tissue extracts. Nociceptive activity was verified in both tissue extracts, but P. falkneri presented a two-fold higher activity than D. guttata tissue extract. No direct hemolysis, phospholipase A(2) and coagulant activities were observed in both tissue extracts. Antigenic cross-reactivity was noticed by ELISA and Western blotting, using antisera raised in rabbits. Species-specific sera reacted with several components of both tissue extracts, noticeably above 22 kDa. Both tissue extracts presented gelatinolytic, caseinolytic and fibrinogenolytic activities, which were not caused by the action of metalloproteinases. Hyaluronidase activity was detected only in P. falkneri tissue extract. Our experimental observations suggest that P. falkneri tissue extract is more toxic than D. guttata tissue extract. These results may explain why injuries caused by freshwater stingrays are more severe in human accidents. (c) 2007 Elsevier Ltd. All rights reserved.

A representação da mulher negra em Machado de Assis (leituras de Mariana e Sabina)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Catch rates of artisanal fisheries targeting Dasyatis guttata (Bloch & Schneider, 1801) in Todos os Santos Bay, northeastern Brazil

Dasyatis guttata has been target of artisanal fisheries in the coast of Bahia (Northeast Brazil) mainly by “arraieira” (gillnet) and “grozeira” (bottom long-line), but until now there is no stock assessment study. One of the important data for this knowledge is reliable indices of abundance. The aims of the present work are to: (1) estimate the best predictor for relative abundance (catch-per-unit-of-effort, CPUE), examining whether catch (production – kg) was related to: soak time of the gear, size of the gillnet or number of hooks, applying generalized linear model (GLM); (2) estimate the annual CPUE (kg/hooks and kg/m) averaged by gear; and (3) assess the temporal CPUE variance. Based on monthly sampling between January 2012 and January 2013, 222 landings by grozeira and 76 by arraiaiera were recorded in the two landing sites in Todos os Santos Bay, Bahia. A total of 14,550 kg (average = 44 kg/month) of D. guttata was captured. Models for both gears were highly significant (P < 0.0001). The analysis indicated that the most appropriate variable for CPUE analysis was the size of the gillnet (P < 0.001) and the number of hooks (P < 0.0001). Soak time of the gear was not significant for both gears (P = 0.4). High residual deviance expresses the complexity of the relations between ecosystem factors and other fisheries factors affecting relative abundance, which were not considered in this study. The average CPUE by grozeira was 6.39 kg/100 hooks ± 8.89 and by arraieira, 1.47 kg/100 m ± 1.66 over the year. Kruskal-Wallis test showed effect of the month on the mean grozeira CPUE (P = <0.001), but no effect (P = 0.096) on the mean arraieira CPUE. Grozeira CPUE values were highest in December and March, and lowest between May to August

"Beyond Freud and Jung": Sabina Spielrein's Contribution to Child Psychoanalysis and Developmental Psychology

Up to the present day, Sabina Spielrein has been seen as a means to deeper understanding of Freud and Jung and, in particular, the relationship between these two “great men”. This is also the reason why her scholarly achievements after her 1912 essay "Destruction as the Cause of Coming Into Being” are hardly taken into account. This study shows that Spielrein's main research work was in the areas of child analysis and developmental psychology—that is, beyond the work and the persons of Freud and Jung—and that she made numerous significant contributions to the field, so many of them ahead of her time.

Palabras cotidianas que enamoran : Hernández, Benedetti, Sabina y Serrat

Erich Fromm afirma que "el amor sólo es posible cuando dos personas se comunican entre sí desde el centro de sus existencias". Esta comunicación, que transmite nuestras emociones, se manifiesta de diversas formas. Una de ellas es a través de las palabras; palabras que pueden ser poesías o canciones. El presente trabajo pretende analizar cómo los conceptos de amor, palabras y música se reflejan en algunas poesías de Mario Benedetti y Miguel Hernández y en la canción Hoy por ti, mañana por mí, de Joaquín Sabina y Joan Manuel Serrat. Asimismo, se establecerán relaciones comparando las poesías y la canción. Para ello utilizaremos las ideas que Erich From y Roland Barthes nos aportan sobre el amor. Asimismo los conceptos propuestos por Mijail Bajtin en relación al discurso, y nociones de Julia Kristeva respecto del lenguaje musica

Palabras cotidianas que enamoran : Hernández, Benedetti, Sabina y Serrat

Erich Fromm afirma que "el amor sólo es posible cuando dos personas se comunican entre sí desde el centro de sus existencias". Esta comunicación, que transmite nuestras emociones, se manifiesta de diversas formas. Una de ellas es a través de las palabras; palabras que pueden ser poesías o canciones. El presente trabajo pretende analizar cómo los conceptos de amor, palabras y música se reflejan en algunas poesías de Mario Benedetti y Miguel Hernández y en la canción Hoy por ti, mañana por mí, de Joaquín Sabina y Joan Manuel Serrat. Asimismo, se establecerán relaciones comparando las poesías y la canción. Para ello utilizaremos las ideas que Erich From y Roland Barthes nos aportan sobre el amor. Asimismo los conceptos propuestos por Mijail Bajtin en relación al discurso, y nociones de Julia Kristeva respecto del lenguaje musica

Palabras cotidianas que enamoran : Hernández, Benedetti, Sabina y Serrat

Erich Fromm afirma que "el amor sólo es posible cuando dos personas se comunican entre sí desde el centro de sus existencias". Esta comunicación, que transmite nuestras emociones, se manifiesta de diversas formas. Una de ellas es a través de las palabras; palabras que pueden ser poesías o canciones. El presente trabajo pretende analizar cómo los conceptos de amor, palabras y música se reflejan en algunas poesías de Mario Benedetti y Miguel Hernández y en la canción Hoy por ti, mañana por mí, de Joaquín Sabina y Joan Manuel Serrat. Asimismo, se establecerán relaciones comparando las poesías y la canción. Para ello utilizaremos las ideas que Erich From y Roland Barthes nos aportan sobre el amor. Asimismo los conceptos propuestos por Mijail Bajtin en relación al discurso, y nociones de Julia Kristeva respecto del lenguaje musica

Sobre la presencia de la sabina negra (Juniperus phoenicea L.) en Madrid.

Estudio de los escasos ejemplares de sabina negra localizados en la Comunidad de Madrid , importantes desde el punto de vista corológico por ser los más occidentales del centro peninsular.

Juniperus phoenicea L. (Sabina negral) en la Comunidad de Madrid

Se da a conocer la presencia de Juniperus phoenicea L. en el territorio de la Comunidad de Madrid y se estudia la distribución de las poblaciones más cercanas en territorios vecinos. Se han detectado tres localidades y se aportan inventarios de vegetación realizados en las mismas. Se hacen unas consideraciones sobre su comportamiento ecológico y distribución. Y por último se detallan medidas a tener en cuenta para la gestión de esta especie en la Comunidad de Madrid.

Sabina, oder, Morgenscenen im Putzzimmer; einer reichen Römerin,

Mode of access: Internet.