Controle integrado da broca da haste da mandioca Sternocoelus spp.

Consideradas pragas secundárias, as brocas da haste da mandioca Sternocoelus spp. (Coleoptera: Curculionidae) são problema fitossanitário em algumas áreas produtoras (RODRIGUEZ et al., 2009). O controle dessa praga é difícil, pois o dano ocorre quando ao eclodir e se alimentar no interior da haste as larvas interrompem o fluxo de seiva na planta levando-a à morte (CARVALHO et al. 2009)

Hawking Radiation from Universal Horizons

The persistence of a suitable notion of black hole thermodynamics in Lorentz breaking theories of gravity is not only a non-trivial consistency test for such theories, it is also an interesting investigation {\em per se}, as it might help us identifying the crucial features at the root of these surprising laws governing such purely gravitational objects. In past investigations, controversial findings were presented in this sense. With the aim of settling this issue, we present here two complementary derivations of Hawking radiation in geometries endowed with universal horizons: a novel feature of back holes in Lorentz breaking theories of gravity which reproduces several properties normally characterizing Killing horizons. We find that both the derivations agree on the fact that the Hawking temperature associated to these geometries is set by the generalized universal horizon peeling surface gravity, as required for consistency with extant derivations of the first law of thermodynamics for these black holes. We shall also comment on the compatibility of our results with previous alternative derivations and on their significance for the survival of the generalized second law of black hole thermodynamics in Lorentz breaking theories of gravity

Fried potatoes: Impact of prolonged frying in monounsaturated oils

Fresh potatoes were intermittently deep-fried up to recommended limits (175 °C, 8 h/day, 28 h) in extra-virgin olive oil (EVOO), peanut oil (PO) and canola oil (CO), and compared for diverse chemical components and sensorial attributes, aiming to quantify the impact of prolonged frying on potatoes nutrients, and the potential alterations resulting from the use of different monounsaturated-rich oils. Independently of oil type, its degradation promotes time-dependent losses of important potato nutrients, as vitamin C. Regarding the monounsaturated-rich oils tested, potatoes fried in CO had more equilibrated fatty acid profiles, but higher amounts of aldehydes derived from PUFA oxidation, while in EVOO were enriched with phenolic compounds. Acrylamide amounts were not affected by oil type or frying hours. Sensory degradation was gradually perceived by the panellists, except in PO. Prolonged frying should not be studied only on the basis of oil degradation because, even if within regulated limits, it induces loss of important food compounds.The authors acknowledge the financial support from PRODER (Contract n° 53988), co-financed by FAEDER, and from project UID/QUI/50006/2013 – POCI/01/0145/FEDER/007265 with financial support from FCT/MEC through national funds, co-financed by FEDER, under the Partnership Agreement PT2020 and the PhD Grant—SFRH/BD/82285/2011 attributed to Carla S.P. Santos. Lucía Molina García also acknowledges the financial support from Campus de Excelencia Internacional Agroalimentario (ceiA3) and University of Jaén, from Spain

Variedades de mandioca (Manihot esculenta Crantz) como isca na armadilha cnpmf e proposição de índice bad para monitoramento da broca da haste da mandioca Sternocoelus spp.

O gênero Sternocoelus (Coleoptera: Curculionidae) tem se destacado pelos danos causados em cultivos familiares e comerciais de mandioca na região Nordeste e em outras regiões do país. As brocas da haste da mandioca, embora sejam consideradas pragas secundárias, se constituem em problema fitossanitário em algumas áreas produtoras (RODRIGUEZ et al. 2009)

Population structure of Atlantic swordfish (Xiphias gladius L. 1758) (Teleostea, Xiphiidae) using mitochondrial DNA analysis: implications for fisheries management

Recent studies on Atlantic swordfish (Xiphias gladius L. 1758) genetic structure have demonstrated significant heterogeneity but the precise boundary between populations remains to be identified. In this context, genetic diversity was investigated by PCR–RFLP analysis at the control region of mitochondrial DNA (D–loop) from 274 swordfish specimens collected from five different areas of the Atlantic Ocean. The analysis of molecular variance (AMOVA) showed that genetic variation was mainly due to differences within rather than between the studied areas. Additionally, the phylogenetic analysis did not show evident relationships among haplotypes from all areas. However, low but significant FST values were recorded when comparing Equatorial samples with those from the north central and north tropical Atlantic. These results do not support a need for changing the current management boundary for the Atlantic fishery. Key words: Xiphiidae, Swordfish, Xiphias gladius, Mitochondrial DNA, Genetic variability, Atlantic Ocean.Estudios recientes sobre la estructura genética del pez espada del Atlántico (Xiphias gladius L. 1758) han demostrado una heterogeneidad significativa, pero los límites precisos entre poblaciones no han sido identificados. En este contexto, la diversidad genética se ha investigado mediante análisis PCR–RFLP en la región control de ADN mitocondrial (bucle D) de 274 peces espada recolectados en cinco zonas diferentes del océano Atlántico. El análisis de la varianza molecular (AMOVA) mostró que la variación genética se debía a diferencias en cada zona y no entre las zonas estudiadas. Además, los análisis filogenéticos no muestran relaciones evidentes entre los haplotipos de todas las zonas. A pesar de ello, al comparar las muestras ecuatoriales con las de zonas más al norte, se obtienen valores de FST bajos pero significativos. Estos resultados indican que no es necesario cambiar los límites de las zonas de gestión para la pesquería del Atlántico. Palabras clave: Xiphiidae, Pez espada, Xiphias gladius, ADN mitocondrial, Variabilidad genética, Océano Atlántico.Recent studies on Atlantic swordfish (Xiphias gladius L. 1758) genetic structure have demonstrated significant heterogeneity but the precise boundary between populations remains to be identified. In this context, genetic diversity was investigated by PCR–RFLP analysis at the control region of mitochondrial DNA (D–loop) from 274 swordfish specimens collected from five different areas of the Atlantic Ocean. The analysis of molecular variance (AMOVA) showed that genetic variation was mainly due to differences within rather than between the studied areas. Additionally, the phylogenetic analysis did not show evident relationships among haplotypes from all areas. However, low but significant FST values were recorded when comparing Equatorial samples with those from the north central and north tropical Atlantic. These results do not support a need for changing the current management boundary for the Atlantic fishery. Key words: Xiphiidae, Swordfish, Xiphias gladius, Mitochondrial DNA, Genetic variability, Atlantic Ocea

An X-ray Atlas of Groups of Galaxies

A search was conducted for a hot intragroup medium in 109 low-redshift galaxy groups observed with the ROSAT PSPC. Evidence for diffuse, extended X-ray emission is found in at least 61 groups. Approximately one-third of these detections have not been previously reported in the literature. Most of the groups are detected out to less than half of the virial radius with ROSAT. Although some spiral-rich groups do contain an intragroup medium, diffuse emission is restricted to groups that contain at least one early-type galaxy.Comment: 39 pages, 12 figures, to appear in The Astrophysical Journal Sup

Influ?ncia da luminosidade e cor de aqu?rio em pacam? Lophiosilurus alexandri em fases iniciais de desenvolvimento

A sobreviv?ncia de diversas esp?cies de peixes em cativeiro depende de sua adapta??o ?s condi??es ambientais, sendo essencial adequar par?metros como a luminosidade e cor ambiente. Com isso, objetivou-se, com o desenvolvimento de dois experimentos: com o primeiro, avaliar o desempenho de larvas de pacam? submetidos a duas cores de aqu?rio e dois n?veis de luminosidade e no segundo, avaliar o desempenho, o comportamento e pigmenta??o da pele de juvenis pacam? Lophiosilurus alexandri submetidos a diferentes n?veis de luminosidade. No primeiro experimento, conduzido por 25 dias, foram utilizadas 1200 larvas, distribu?dos em 4 tratamentos: aqu?rio branco com 0 Lux, aqu?rio branco com 88 Lux, aqu?rio preto com 0 Lux e aqu?rio preto com 88 Lux. Para o segundo experimento, conduzido por 75 dias, foram utilizados 160 juvenis de pacam?s submetidos a 4 luminosidades: 0 lux, 218 lux, 278 lux e 458 lux. Em ambos experimentos os animais foram alimentados quatro vezes ao dia, em ambiente com fotoperiodo de 12 horas de luz e 12 horas de escuro e aera??o constante. No primeiro experimento, indica-se para o cultivo de p?s larvas de pacam?s o uso de aqu?rios brancos e luminosidades entre 0 e 88 lux n?o afetam o desempenho dos peixes. J? no segundo experimento, as diferentes luminosidades n?o interferiram na pigmenta??o, crescimento e manteve baixo os n?veis de cortisol. Por?m recomenda-se o cultivo de juvenis de pacam?em ambiente sem luminosidade, pois diminui o consumo de ra??o e favorece a convers?o alimentar, sendo estas caracter?sticas desej?veis ? produ??o.Funda??o de Amparo ? Pesquisa do Estado de Minas Gerais (FAPEMIG)Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES)Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq)Banco do Nordeste do BrasilDisserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2016.The survival of several species of fish in captivity depends on their adaptation to environmental conditions, it is essential adapt parameters such as brightness and color setting. It aimed to , with the development of two experiments : the first , to evaluate the performance of pacam? larvae submitted to two aquarium colors and two light levels and second , evaluate performance, behavior and skin pigmentation pacam? of juvenile Lophiosilurusalexandri subjected to different levels of brightness .In the first experiment, conducted for 25 days, they were used in 1200 larvae distributed in 4 treatments: White aquarium with 0 lux, white tank with 88 Lux, black tank with 0 lux and black tank with 88 Lux. For the second experiment was conducted for 75 days, they were used 160 pacam? juveniles subjected to 4 luminosities: 0 lux, 218 lux, 278 lux and 458 lux. In both experiments the animals were fed four times a day in photoperiod environment with 12 hour of light and 12 hours of dark and constant aeration. In the first experiment, it is indicated for post larvae pacam?s growing use of white and luminosities aquariums between 0 and 88 lux not affect fish performance. In the second experiment, the different luminosities not interfere in pigmentation, growth and kept the low cortisol levels. But it recommends the pacam? of juvenile culture in no light environment because it reduces feed intake and feed conversion favors, which are desirable characteristics to production