43 research outputs found

    Mild cognitive impairment (part 2): biological markers for diagnosis and prediction of dementia in Alzheimer's disease

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    Produção cientĂ­fica sobre nutrição no Ăąmbito da Atenção PrimĂĄria Ă  SaĂșde no Brasil: uma revisĂŁo de literatura

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    Multiparasitism of Piezodorus guildinii eggs by Telenomus podisi and Trissolcus urichi

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    Multiparasitism involves competition between larvae inside the host. Telenomus podisi (Ashmead) and Trissolcus urichi (Crawford) (Hymenoptera: Platygastridae) are solitary egg parasitoids of Piezodorus guildinii Westwood (Hemiptera: Pentatomidae), an important soybean pest. Egg masses partially parasitized by one species were offered to females of the other species. Both species attacked randomly unparasitized and parasitized hosts. Emergence from multiparasitized eggs was greater for T. urichi than for T. podisi, although it was lower than emergence from eggs parasitized by T. urichi alone. Emergence of each species was independent of the order in which they parasitized and of time elapsed between ovipositions. Progeny sex ratio obtained from multiparasitized and from parasitized eggs were similar for both parasitoids. Our results suggest that T. urichi is a better intrinsic competitor than T. podisi for P. guildinii eggs. In the field, however, T. podisi was the dominant species, and T. urichi could be using other pentatomid eggs as resource.Fil: Cingolani, Maria Fernanda. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico la Plata. Centro de Estudios ParasitolĂłgicos y de Vectores (i); Argentina. Universidad Nacional de La Plata; ArgentinaFil: Greco, Nancy Mabel. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico la Plata. Centro de Estudios ParasitolĂłgicos y de Vectores (i); Argentina. Universidad Nacional de La Plata; ArgentinaFil: Liljesthrom, Gerardo Gustavo. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico la Plata. Centro de Estudios ParasitolĂłgicos y de Vectores (i); Argentina. Universidad Nacional de La Plata; Argentin
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