Efeito das cultivares e idades de plantas de algodoeiro na capacidade predatória de Orius insidiosus predando Aphis gossypii.

Avaliou-se a capacidade de predação de fêmeas de Orius insidiosus (Say, 1832) (Hemiptera: Anthocoridae), em plantas de algodoeiro com três diferentes idades (20, 30, 40 dias) e três cultivares (Antares, CNPA7H e Acala 90)

Host plant effects on the development, survival, and reproduction of dysmicoccus brevipes (Hemiptera: Pseudococcidae) on grapevines.

Dysmicoccus brevipes (Cockerell, 1893) (Hemiptera: Pseudococcidae) is one of the most frequent and abundant mealybugs in Brazilian vineyards, where it causes direct and indirect damage to the vines. In this study, we investigated the effect of plant structures, cultivars, and vine rootstocks on the development, survival, and reproduction of D. brevipes under laboratory conditions. Leaves of the tablegrape cultivar ÔIta´liaÕ (Vitis vinifera) and ÔNia´gara RosadaÕ (Vitis labrusca) and the vine roots of the rootstocks Paulsen 1103 (Vitis berlandieriV. rupestris) and IAC 572 (Vitis caribaea101-14 Mgt) were used as host plants. D. brevipes developed on different vegetative structures, cultivars, and vine rootstocks. D. brevipes showed the shortest developmental period and highest survival and fecundity rates on leaves of cultivar Ita´lia. Survival on leaves was signiÞcantly higher than on roots. Roots of IAC 572 were unsuitable for D. brevipes development, resulting in nonreproductive females.ThemealybugsÕ longevityonleaves and vine roots was similar. Higher intrinsic and Þnite rates of increase and net reproductive rate were observed whenmealybugs developed on Ita´lia leaves.Weconcluded that the host plant affects the development and survival of D. brevipes and that the choice of the most appropriate cultivar or vine rootstock can help to reduce pest infestation, and is therefore an additional component to be included in the integrated pest management of grapes

Predação por Podisus nigrispinus (Heteroptera: pentatomidae) sob efeito da densidade de Alabama argillacea (Lepidoptera: noctuidae) e idades do algodoeiro.

Neste estudo, avaliou-se a capacidade de predação de ninfas de quinto instar e fêmeas adultas de Podisus nigrispinus (Dallas) sobre lagartas de terceiro instar do curuquerê-do-algodoeiro Alabama argillacea (Hüebner), em baixa e alta infestação (uma ou três lagartas por planta) e em três idades do algodoeiro (20, 40 e 60 dias de idade após emergência - DAE)

Impacto econômico de um sistema de tratamento dos efluentes de biodigestores.

Projeto: 02.07.06.007

Capacidade predatória de Orius insidiosus predando Aphis gossypii sob o efeito da temperatura e variação da umidade relativa e fotoperíodo.

Estudou-se a capacidade predatória de Orius insidiosus predando o pulgão do algodoeiro Aphis gossypii sob o efeito da temperatura (25ºC) em diferentes umidades relativas (50, 60 e 70%) e fotoperíodos (10:14; 14:10 e 12:12 de luz:escuro). Folhas de algodoeiro cultivar DeltaOpal foram individualizada e infestada com quinze ninfas de terceiro/quarto estádio de A. gossypii e em seguida liberado um adulto do predador O.insidiosus. As avaliações foram realizadas diariamente, quantificando-se sobrevivência, longevidade e o número de pulgões predados por dia e total. A sobrevivência do predador foi afetada pelos fotoperíodos, enquanto que quando mantidos em umidade relativa de 50%, houve uma taxa menor de sobrevivência. A longevidade foi menor quando o predador estava condicionado ao fotoperíodo de 14:10 (luz:escuro). As condições testadas influenciaram na taxa diária e total de predação para fase adulta de O. insidiosus. O predador quando submetido a alta umidade relativa (70%) favoreceu maior taxa de predação

My heart is racing! Psychophysiological dynamics of skilled racecar drivers

Our purpose was to test the multi-action plan (MAP) model assumptions in which athletes’ psychophysiological patterns differ among optimal and suboptimal performance experiences. Nine professional drivers competing in premier race categories (e.g., Formula 3, Porsche GT3 Cup Challenge) completed the study. Data collection involved monitoring the drivers’ perceived hedonic tone, accuracy on core components of action, posture, skin temperature, respiration rate, and heart rate responses during a 40-lap simulated race. Time marks, gathered at three standardized sectors, served as the performance variable. The A1GP racing simulator (Allinsport, Modena) established a realistic race platform. Specifically, the Barcelona track was chosen due to its inherently difficult nature characterized by intermittent deceleration points. Idiosyncratic analyses showed large individual differences in the drivers’ psychophysiological profile, as well as distinct patterns in regards to optimal and suboptimal performance experiences. Limitations and future research avenues are discussed. Action (e.g., attentional control) and emotion (e.g., biofeedback training) centered applied sport psychology implications are advanced

Lake-atmosphere interactions at Alqueva reservoir : a case study in the summer of 2014

The study of lake-atmosphere interactions was the main purpose of a 2014 summer experiment at Alqueva reservoir in Portugal. Near-surface fluxes of momentum, heat and mass [water vapour (H2O) and carbon dioxide (CO2)] were obtained with the new Campbell Scientific's IRGASON Integrated Open-Path CO2/H2O Gas Analyser and 3D Sonic Anemometer between 2 June and 2 October. On average, the reservoir was releasing energy in the form of sensible and latent heat flux during the study period. At the end of the 75 d, the total evaporation was estimated as 490.26 mm. A high correlation was found between the latent heat flux and the wind speed (R = 0.97). The temperature gradient between air and water was positive between 12 and 21 UTC, causing a negative sensible heat flux, and negative during the rest of the day, triggering a positive sensible heat flux. The reservoir acted as a sink of atmospheric CO2 with an average rate of -0.026 mg m(-2) s(-1). However, at a daily scale we found an unexpected uptake between 0 and 9 UTC and almost null flux between 13 and 19 UTC. Potential reasons for this result are further discussed. The net radiation was recorded for the same period and water column heat storage was estimated using water temperature profiles. The energy balance closure for the analysed period was 81%. In-water solar spectral downwelling irradiance profiles were measured with a new device allowing measurements independent of the solar zenith angle, which enabled the computation of the attenuation coefficient of light in the water column. The average attenuation coefficient for the photosynthetically active radiation spectral region varied from 0.849 +/- 0.025 m(-1) on 30 July to 1.459 +/- 0.007 m(-1) on 25 September.Peer reviewe

Desenvolvimento de metodologia de criação e multiplicação de Aphis gossypii: avanços e sucessos.

Estudos sobre as mais diversas formas de controle de pragas e utilização de inimigos naturais, exigem artrópodes em quantidade e qualidade