996 resultados para 1934


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Restructure of the genus Deois Fennah; description of a new genus and new species (Homoptera, Cercopidae, Tomaspidinae). The genus Deois Fennah is reviewed and some changes in the taxonomy are introduced. The genus and its four subgenera are redefined, having now the following composition: 1) subgenus Deois (Deois) with: D. (D.) correntina (Berg, 1879), D. (D.) grandis Sakakibara, 1979, D. (D.) knoblauchii (Berg, 1879) (formerly in D. (Pandysia)), D. (D.) morialis (China & Myers, 1934), D. (D.) mourei Cavichioli & Sakakibara, 1994, D. (D.) piraporae Sakakibara, 1979, D. (D.) pseudoflavopicta (Lallemand, 1938) comb. nov. (formerly in Mahanarva) = D. (D.) similis Sakakibara, 1979 syn. nov., D. (D.) rubropicta Sakakibara, 1979, D. (D.) spinulata sp. nov., D. (D.) terrea (Germar, 1821), D. (D.) uniformis (Distant, 1909). 2) subgenus Deois (Pandysia) with: D. (P.) bergi sp. nov., D. (P.) crenulata sp. nov., D. (P.) schach (Fabricius, 1787) = Sphenorhyna transiens Walker, 1851 syn. nov.. 3) Deois (Fennahia) with: D. (F.) coerulea (Lallemand, 1924), D. (F.) flexuosa (Walker, 1851). 4) Deois (Acanthodeois) with: D. (A.) flavopicta (Stål, 1854), Deois (A.) incompleta (Walker, 1851). The genus Orodamnis Fennah, 1953 stat. nov. (formerly Deois (Orodamnis)) with: Orodamnis rhynchosporae (China & Myers, 1934) comb. nov. The genus Deoisella gen. nov. is described for: Deoisella fasciata sp. nov. (type species) and Deoisella picklesi (China & Myers, 1934) comb. nov.

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In the last three decades, the spiralling whitefly (Aleurodicus dispersus) has become an important international pest. The movement of plants and parts of plants (such as fruits) in international trade and tourism, and by natural dispersal, has favoured its introduction to new areas. In common with others whiteflies of economic importance, the immature and adult stages cause direct feeding damage by piercing and sucking of sap from foliage, and indirect damage following the accumulation all over host plants of honeydew and waxy flocculent material produced by the insects. Spiralling whitefly is a pest of tropical and subtropical crops, and highly polyphagous. Up to the 1970s, it had been recorded on 44 genera of plants, belonging to 26 botanical families (Mound & Halsey, 1978). This situation changed with the dispersal of the pest to new areas. Nowadays, the spiralling whitefly is one of the major pest of vegetable, ornamental and fruit crops around the globe (Lambkin, 1999). Important host crops include: banana (Musa sapientum), Citrus spp., coconut (Cocos nocifera), eggplant (Solanum melanogena), guava (Psidium guajava), Hibiscus rosa sinensis, Indian almond (Terminalia catappa), papya (Carica papaya), Rosa sp. and tomato (Lycopersicon esculentum) (Saminathan & Jayaraj, 2001). Spiralling whitefly has its origin in the tropical Americas, including Brazil. Although the pest has been recorded only once in Brasil, in the 1920s in the state of Bahia (Bondar, 1923), it now has official quarantine status because of its economic importance. In the Cape Verte Islands, on the West African coast, the pest was initially introduced in the first half of 2000; it has since become established, reaching urban, natural and agricultural areas of the islands that constitute the archipelago. Since then, the pest has been causing damage to many native plants, ornamentals and cultivated food crops (Anon., 2001; Monteiro, 2004). The present study was done in order to produce an inventory of the most common host plants of spiralling whitefly in this new habitat.

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Urho Kekkosen haast.

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Seven genera are treated: Acaulona Wulp, 1888 = Forcipophasia Townsend, 1935 syn. nov., Euacaulona Townsend, 1908, Itaxanthomelana Townsend, 1927, Melanorophasia Townsend, 1934, Urucurymyia Townsend, 1934, Xanthomelanopsis Townsend, 1917, and Mahauiella gen. nov. Two new species are described: Mahauiella nayrae sp. nov. (Brasil, Santa Catarina) and Mahauiella sforcini sp. nov. (Brasil, Santa Catarina). New synonyms proposed: Acaulona costata Wulp, 1888 = Forcipophasia fusca Townsend, 1935 syn. nov. = Acaulona brasiliana Townsend, 1937 syn. nov.

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Based on the photographs (color slides) taken from the type specimens of Adetus species, the following synonyms are established: Adetus subcostatus Aurivillius, 1900 = A. auratoides Breuning, 1943 syn. nov.; A. leucostigma Bates, 1880 = A. venezuelensis Breuning, 1942 syn. nov.; A. pulchellus (Thomson, 1868) = A. laterialbus Breuning, 1942 syn. nov.; A. irregularis (Breuning,1939) = A. gracilis Breuning, 1940 syn. nov.; A. flavescens Melzer, 1934 = A. strandi Breuning, 1940 syn. nov. = A. mediofasciculatus Breuning, 1943 syn. nov.; A. modestus Melzer, 1934 = Atimuropsis densepunctata Breuning, 1939 syn. nov. New species described: Adetus multifasciatus sp. nov. (Brazil, São Paulo); A. lineatus sp. nov. (Brazil, Distrito Federal); A. linsleyi sp. nov. (Ecuador, Los Ríos); A. pacaruaia sp. nov. (Peru, Huanuco), and A. pinima sp. nov. (Peru, Junin). Adetus marmoratus Breuning, 1942 is redescribed.

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The African Republic of Cape Verde consists of nine inhabited and several uninhabited volcanic islands set out in the Atlantic Ocean, about 500 km off the most westerly point of the African mainland and 1500 km south of the Canary Islands @g. 2). Most are rugged and mountainous; three (Sal, Maio, and Boavista) are flat, desert islands with sand beaches. Precipitation is meagre and very erratic; indeed Cape Verde can be seen as an island extension of the arid Sahel zone. Three species of the genus Phoenix are recorded from the Cape Verde Islands, P. akzctyli&a L., P. canariensis Chabaud and P. atlantica A. Chev. While the former two species have almost certainly been introduced by man, the latter is said to be endemic to the islands. Perhaps because the Cape Verdes are a particularly isolated set of islands or because palms are notoriously awkward to collect, little is known about the taxonomy, origins and natural history of this species. Phoenix atlantica was described by the French botanist Auguste Chevalier (1935a) following field exploration in the Cape Verdes in 1934 (Chevalier 1934: 1153). Chevalier provided limited diagnostic characters, defining the species as a clustering palm with 2-6 trunks, 5-15 m in height with dark green leaves 2-3 m in length. He considered it to be most similar in form to P. &ctyZzjkra and P. canariensis, possessing characters of both (Chevalier 1935a). Chevalier’s description indicates that Phoenix atlantica can be distinguished easily from P. canariensis by its clustering growth form (P. canariensis always has a single, stout trunk) and its shorter, straighter leaves. However, the differences between P. atlantica and P. dactylzjkra appear much more subtle. For example, while P. dacfylifera is usually observed as single-stemmed, when left undisturbed for a number of years it becomes clustering like the Cape Verde Phoenix, so this character on its own is unreliable. Further alleged distinctions include acuminate (P. atlantica) versus rounded (P. dactylzjkra) petals in the male flowers (Chevalier 1935a, b, Greuter 1967: 249, and Brochmann et al. 1997), fruit 2 cm long (P. atlantica) versus fruit more than 2.5 cm long (P. dactyl&a) (Brochmann et al.

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Objective: Fetuses are exposed to high concentrations of estradiol due to placental production. Experimental data suggest that estradiol is an important modulator of the immune response. However, the role of estradiol in the pathogenesis of early-onset neonatal sepsis (EOS) is unknown. The purpose of this pilot study was to determine estradiol levels in umbilical venous blood of newborns with EOS or chorioamnionitis exposure. Methods: Estradiol concentrations were measured by enzyme immunoassay in 37 newborns with EOS, 37 newborns with chorioamnionitis and 37 controls matched for gestational age and gender. Results: Estradiol levels correlated with gestational age, birth weight, gender and mode of delivery (p < 0.05). Multivariate analysis revealed higher estradiol levels in the EOS than in the chorioamnionitis group (odds ratio 8.43, 95% CI 1.63-43.45, p = 0.01) with the highest levels in patients with proven bacteraemia (p = 0.02). No difference was found between the EOS and the control group. Exploratory analysis showed an association between lower estradiol levels and a longer duration of mechanical ventilation (n = 28, p = 0.02). Conclusions: Umbilical venous estradiol levels were similar in EOS compared to controls. Further investigation is needed to evaluate whether high estradiol levels in infants with chorioamnionitis increases the risk of developing EOS.

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Urho Kekkosen haast.

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Urho Kekkosen haastattelu. - "Oli onneton juttu, että asia joutui SUL:n vuosikokouksen käsiteltäväksi", lausuu hallitussihteeri Urho Kekkonen Ruotsi- Suomi yleisurheilusuhteista. Torinoon lähetetään 16-17 miestä ja Saksan maaottelusta tulee kireä