O Barão de Rothschild e a questão do Acre

O autor reconstitui a criação do estado brasileiro do Acre, ressaltando os interesses estrangeiros subjacentes à disputa com a Bolívia. O protocolo pelo qual a Bolívia arrendava o território ao Bolivian Syndicate e a disposição de Rio Branco em reivindicar aquela região para o Brasil colocavam os dois países em rota de colisão. Nesse contexto surge a figura dúbia do Barão de Rothschild que propõe uma solução pacífica para o dissídio através do arbitramento da Grã Bretanha.

FOOD CONCENTRATION AND TEMPERATURE EFFECTS ON LIFE CYCLE CHARACTERISTICS OF TROPICAL CLADOCERA (Daphnia gessneri Herbst, Diaphanosoma sarsi Richard, Moina reticulata (Daday)): I. DEVELOPMENT TIME

The effects of food concentration and temperature on embryonic and postem-bryonic duration of three tropical species, Daphnia gessneri(1.5mm), Diaphanosoma sarsi(1.2mm) and Moina reticulata(0.8mm), were investigated as part of life cycle studies which included growth, body size and reproduction. These are the very first experimental studies undertaken on these species. The long-term growth experiments were performed under controlled laboratory conditions at all combinations of temperature (22"C, 27"C and 32"C) and constant food concentration (0.03, 0.05, 0.10, 0.25, 0.50 and 1.00 mgC/L) of the unicellular green alga Scenedesmus acutus.Animals were examined twice daily throughout their life cycle from the neonate to third adult instar. In all three species, temperature exerted the most powerful influence on embryonic duration but there was also a smaller food effect. In D. gessneri,postembry-onic durations remained more or less the same at food levels 0.25 mgC/L but were influenced by temperature. At food concentrations of 0.1 mgC/L or lower, postembryonic durations became increasingly prolonged, particularly at high temperatures. This threshold concentration is affected by temperature: in D. gessneri,it was 0.1 mgC/L at 22oC and 27oC but higher at 32oC (between 0.25 and 0.50 mgC/L). At the same temperature of 27oC, the food threshold level varied between species: it was higher (0.25 mgC/L) for D. sarsiand lower (0.05 mgC/L) for M. reticulatacompared with D. gessneri(0.1 mgC/L). In both embryonic and postembryonic durations there is a body size effect as the absolute durations were longest in the largest species and shortest in the smallest species In all three species, prolongation of postembryonic duration at combinations of high temperature and lowered food levels was accompanied by increased number of juvenile instars.

Records of Myodopsylla wolffsohni wolffsohni (Rothschild, 1903) (Siphonaptera, Ischnopsyllidae) on Myotis nigricans Schinz, 1821 (Chiroptera, Vespertilionidae), from the State of Paraná, Southern Brazil

The flea, Myodopsylla wolffsohni wolffsohni (Rothschild, 1903), had been recorded for the first time in the State of Paraná in 1940, on the bat, Myotis levis (I. Geoffroy, 1824). Previously, this species of flea had only been recorded on Myotis nigricans, in the Amazonian region. This is the second record of M. w. wolffsohni on M. nigricans in Brazil, and the first in the State of Paraná. Although this flea has been found on undetermined Chiroptera in the State of Santa Catarina, the present record represents the meridional limit of geographic distribution for the infestation on M. nigricans.

The aquatic habit and host plants of Paracles klagesi (Rothschild) (Lepidoptera, Erebidae, Arctiinae) in Brazil

The aquatic habit and host plants of Paracles klagesi (Rothschild) (Lepidoptera, Erebidae, Arctiinae) in Brazil. The aquatic caterpillar Paracles klagesi (Rothschild, 1910) was collected from the headwaters of a stream in an ecotone between Cerrado and Babaçu forest in northeastern Brazil. The single caterpillar found was observed feeding on the macrophyte Tonina fluviatilis Aubl. (Eriocaulaceae) and other aquatic plants of the family Nymphaeaceae present in the area, but also accepted as food Elodea canadensis Michx. (Hydrocharitaceae) and Cabomba sp. (Cabombaceae) under laboratory conditions.

O Beethoven-Schrift: Richard Wagner teórico

Quando consideramos a extensão da obra dramática de Richard Wagner, não causa estranheza que seus textos teóricos sejam praticamente desconhecidos. No entanto, um de seus escritos, intitulado Beethoven, influenciou decisivamente a elaboração de um livro famoso, hoje considerado um capítulo importante da história da estética, O nascimento da tragédia. Este artigo pretende analisar este escrito de Wagner na intenção de desvendar o que pode ter sido tão determinante na leitura que Nietzsche fez dele, e que o levou ao ponto de citá-lo de modo efusivo no primeiro prefácio da sua obra de estréia, dedicado àquele que, até então, era seu grande mestre e amigo e, como veremos, uma influência não só musical, mas também teórica.

NIKLAS LUHMANN E RICHARD RORTY: CONTINGÊNCIAS E INCONSISTÊNCIAS

Rorty enfrentou as contingências do mundo contemporâneo apostando no partilhamento da “retórica das democracias liberais”, como a mais aceita e mais adequada em uma sociedade caracterizada pelo fim das metanarrativas e das condutas de moral absoluta. Mas essa aposta resvala claramente num pragmatismo moral mal disfarçado. Luhmann, ao contrário, levou até o fim a preocupação, abandonada por Rorty, de elaborar uma teoria antimetafísica e despida de um projeto normativo para a sociedade contemporânea. Sua teoria dos sistemas enfrenta as contingências do mundo, excluindo tudo que for externo ao sistema, ou seja, tudo que não possa se tornar um mecanismo de manutenção da identidade dos sistemas face à complexidade do mundo.