59 research outputs found
Impact of gamma radiation dose on sterility and quality parameters of Anastrepha fraterculus (Diptera: Tephritidae)
Anastrepha fraterculus (Wiedemann, 1830) (Diptera: Tephritidae) is a major fruit pest, which is basicaly controlled using insecticides, which represents a risk to benefi cial arthropods, human health and food contamination. The sterile insect technique (SIT) is a potential alternative tool for the management of this pest, however, only confl icting data is found regarding the optimal dose to achieve sterility. Thus, this study evaluated the effect of gamma radiation doses (0, 40, 50, 60 and 70 Gy) on male and female reproductive sterility, gonads morphometry, emergence, fl ight ability, and longevity under nutritional stress of A. fraterculus. Full female sterility was achieved at 50 Gy, while full male sterility was achieved at 70 Gy. Both ovarian and testicular sizes were affected by irradiation, while no infl uence was observed on the quality parameters evaluated. Our results suggest that 70 Gy applied 48 h before adult emergence can be used to sterilize A. fraterculus in a SIT programme
Medfly Population Suppression through Augmentative Release of an Introduced Parasitoid in an Irrigated Multi-Fruit Orchard of Central–Western Argentina
Biological control through the augmentative release of parasitoids is an important complementary tool that may be incorporated into other strategies for the eradication/eco-friendly control of pest fruit flies. However, not much information is available on the effectiveness of fruit fly parasitoids as biocontrol agents in semi-arid and temperate fruit-growing regions. Therefore, this study evaluated the effect of augmentative releases of the larval parasitoid Diachasmimorpha longicaudata (Ashmead) on Ceratitis capitata (Wiedemann) (medfly) populations over two fruit seasons (2013 and 2014) on a 10 ha irrigated fruit farm in San Juan province, central–western Argentina. The parasitoids were mass reared on irradiated medfly larvae of the Vienna-8 temperature-sensitive lethal genetic sexing strain. About 1692 (±108) parasitoids/ha were released per each of the 13 periods throughout each fruit season. Another similar farm was chosen as a control of non-parasitoid release. The numbers of captured adult flies in food-baited traps and of recovered fly puparia from sentinel fruits were considered the main variables to analyze the effect of parasitoid release on fly population suppression using a generalized least squares model. The results showed a significant decrease (p < 0.05) in the medfly population on the parasitoid release farm when compared to the Control farm, demonstrating the effectiveness of augmentative biological control using this exotic parasitoid. Thus, D. longicaudata could be used in combination with other medfly suppression strategies in the fruit production valleys of San Juan.Fil: Suárez, Lorena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; ArgentinaFil: Buonocore Biancheri, María Josefina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; ArgentinaFil: Murúa, Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; ArgentinaFil: Ordano, Mariano Andrés. Universidad Nacional de Tucumán. Instituto de Ecología Regional. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Ecología Regional; ArgentinaFil: Wang, Xingeng. No especifíca;Fil: Cancino, Jorge. No especifíca;Fil: Mello Garcia, Flavio Roberto. Universidade Federal de Pelotas; BrasilFil: Sánchez, Guillermo Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; ArgentinaFil: Beltrachini, Sergio. Universidade Federal de Pelotas; BrasilFil: Kulichevsky, Luis Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; ArgentinaFil: Ovruski Alderete, Sergio Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentin
National identity predicts public health support during a global pandemic (vol 13, 517, 2022) : National identity predicts public health support during a global pandemic (Nature Communications, (2022), 13, 1, (517), 10.1038/s41467-021-27668-9)
Publisher Copyright: © The Author(s) 2022.In this article the author name ‘Agustin Ibanez’ was incorrectly written as ‘Augustin Ibanez’. The original article has been corrected.Peer reviewe
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National identity predicts public health support during a global pandemic.
Changing collective behaviour and supporting non-pharmaceutical interventions is an important component in mitigating virus transmission during a pandemic. In a large international collaboration (Study 1, N = 49,968 across 67 countries), we investigated self-reported factors associated with public health behaviours (e.g., spatial distancing and stricter hygiene) and endorsed public policy interventions (e.g., closing bars and restaurants) during the early stage of the COVID-19 pandemic (April-May 2020). Respondents who reported identifying more strongly with their nation consistently reported greater engagement in public health behaviours and support for public health policies. Results were similar for representative and non-representative national samples. Study 2 (N = 42 countries) conceptually replicated the central finding using aggregate indices of national identity (obtained using the World Values Survey) and a measure of actual behaviour change during the pandemic (obtained from Google mobility reports). Higher levels of national identification prior to the pandemic predicted lower mobility during the early stage of the pandemic (r = -0.40). We discuss the potential implications of links between national identity, leadership, and public health for managing COVID-19 and future pandemics
Author Correction: National identity predicts public health support during a global pandemic
Correction to: Nature Communications https://doi.org/10.1038/s41467-021-27668-9, published online 26 January 2022
Clinical features of araneism in children and teenager in Chapecó town, Santa Catarina State, Brazil
Com o objetivo de verificar a incidência e a caracterização dos acidentes com aranhas em crianças e adolescentes no município de Chapecó, Estado de Santa Catarina, de 1995 a 2001, realizou-se este trabalho. O estudo foi de caráter descritivo e exploratório. Para tanto, verificaram-se os registros das notificações realizadas pela vigilância epidemiológica nos anos 1995 a 2001 e calcularam-se a incidência e a freqüência. Para a população de 1995 foram utilizados os dados do Censo do Instituto Brasileiro de Geografia e Estatística (IBGE) de 1991, acrescentando crescimento de 3,35% ao ano; já para os anos seguintes foi utilizado o Censo de 1996 e 2000, com crescimento anual de 2,84%. No município de Chapecó ocorreram 30 acidentes com aranhas durante o período estudado, sendo que a maioria foi ocasionada por aranhas do gênero Loxosceles. As partes do corpo mais acometidas foram coxas/pernas, pé/dedos e mão/dedos. As principais alterações clínicas apresentadas pelos pacientes foram dor, edema e eritema. Conclui-se que os casos de araneísmo vêm aumentando no município de Chapecó.With the objective of verifying the frequency and characterizing of accidents involving people bitten by spiders in Chapecó town, Santa Catarina State, from 1995 to 2001, this paper was held. The study is descriptive and exploratory. This way, we verified the registrations of noted by the epidemiological department from 1995 to 2001 being able for us to calculate the frequency of incidents. For the 1995 population we used data from the 1991 Brazilian Geographic Statistic Institute (IBGE) census adding a 3.35% growth a year, on the other hand for the following years it was used the 1996 and 2000 census with an annual 2.84% growth. In Chapecó occurred 30 accidents with spiders during the studied period, being the most expressive part of it caused by spiders of the genera Loxosceles. The body’s most bitten parts were thigh/legs, foot/toes and hand/fingers. The main clinic alterations presented by the patients were pain, edema and erythema. The case of spiders biting men is increasing in Chapecó
Características clínicas e epidemiologia do araneísmo em crianças e adolescentes no município de Chapecó, Santa Catarina, Brasil
Análise faunística de gafanhotos na Floresta Nacional de Chapecó, Santa Catarina Faunistic analyses of grasshoppers in the National Forest of Chapecó, Santa Catarina, Brazil
<p>Realizou-se a análise faunística de gafanhotos coletados em três constituições vegetais da Flona de Chapecó. Coletas semanais foram realizadas em áreas de eucalipto, mata nativa e pinus durante o período de dezembro de 2003 a dezembro de 2004. Utilizaram-se armadilhas do tipo “pitfall”, rede de varredura, guarda-chuva entomológico e “malaise”. A fauna encontrada nas diferentes áreas foi caracterizada por meio dos índices de abundância, constância, dominância e frequência. Dezoito espécies foram comuns para as três áreas. As espécies <em>Staurorhectus</em> <em>logicornis logicornis</em>, <em>Cylindrotettix </em>sp. e <em>Ommexecha</em> virens ocorreram apenas em eucaliptos e pínus, enquanto, <em>Scotussa lemniscata </em>e <em>Zoniopoda tarsata </em>ocorreram para eucaliptos e mata nativa enquanto <em>Amblytropidia </em>sp. ocorreu somente em mata nativa e pínus. <em>Tridactylus</em> politus ocorreu somente em pínus. As espécies <em>Allotruxalis gracilis</em>, <em>Dichroplus elongatus</em>, <em>Dichroplus</em> <em>misionensis </em>e <em>Ronderosia bergi </em>foram muito frequentes, dominantes e muito abundantes na área de eucaliptos. <em>A. gracilis</em>, <em>Metaleptea adspersa</em> e <em>D. misionensis</em> foram muito frequentes, dominantes e muito abundantes na área de mata nativa. <em>Metaleptea adspersa</em> e <em>R. bergi </em>foram muito frequentes, dominantes e muito abundantes na área de pínus. Observou-se uma semelhança na diversidade de espécies entre as áreas, com maior abundância para a área de eucaliptos.</p><p>doi: 10.4336/2011.pfb.31.65.43</p><br><p>A study of the grasshopper fauna was performed through samples collected in three vegetal types in the National Forest of Chapecó. Weekly collections were carried out from December 2003 to December 2004. Pitfall traps, sweep nets, entomological umbrellas and malaise traps were used. Collections were repeated in areas with eucalyptus trees, native species and pine trees. The fauna found in different areas was classified by its abundance, constancy, dominance and frequency. Eighteen species were common in the three areas. <em>Staurorhectus longicornis longicornis</em>, <em>Cylindrotettix</em> sp. and <em>Ommexecha virens</em> were found only in eucalyptus and pine areas. <em>Scotussa lemniscata</em> and <em>Zoniopoda tarsata</em> were found in areas with eucalyptus and native trees. <em>Amblytropidia</em> sp. was found only in native vegetation and pines areas. <em>Tridactylus politus</em> was found just in the pine area. <em>Allotruxalis gracilis</em>, <em>Dichroplus elongatus</em>, <em>Dichroplus misionensis</em> and <em>Ronderosia bergi</em> were very frequent, dominant and very abundant in the eucalyptus tree area.<em> A. gracilis</em>,<em> M. adspersa</em> and <em>D.</em> <em>misionensis </em>were very frequent, dominant and very abundant in the native tree area. <em>Metaleptea adspersa</em> and <em>R. bergi</em> were very frequent, dominant and very abundant in the pine area.<em> A similarity</em> in diversity of species was verified with greater abundance in the eucalyptus area.</p><p>doi: 10.4336/2011.pfb.31.65.43</p>
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