01. Universidade Federal Rural de Pernambuco - UFRPE (Sede)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/1
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Resultados da Pesquisa
Item Composição das assembleias de drosofilídeos (Insecta, Diptera) em um fragmento preservado de Floresta Atlântica comparado com um ambiente degradado nas suas imediações(2021-08-06) Santos, Vinícius Alcântara Carvalho Lima; Montes, Martín Alejandro; Garcia, Ana Cristina Lauer; http://lattes.cnpq.br/0563243377799793; http://lattes.cnpq.br/0349635170206363; http://lattes.cnpq.br/7512572540450427Invasive species are among the biggest causes of biodiversity loss on the planet. Biological invasions continue to grow throughout the world, including in the Drosophilidae family. The present study aimed to observe the diversity of Drosophilidae assemblages from a protected area, the Dois Irmãos State Park and an outside area near it, the Universidade Federal Rural de Pernambuco (Federal Rural University of Pernambuco) and their sazonal patterns. There were four collecting expeditions in each area, two in the dry season, two in the rainy season, using five banana bait traps to attract the drosophilids. A total of 25,108 drosophilids of 4 genera and 21 taxa were collected. The sites presented a composition of similar richness and abundance, with a great predominance of exotic species, which represented 91.4% of the total, and only one species, Drosophila malerkotliana, was the most abundant and represented 70.4% of the abundance alone. It was noticed that this species also dominated the composition of the protected area, that was not the case in a previous study in the same place, in which native species of the willistoni subgroup dominated the assemblage. It is still too early to say what may have caused the results shown here, and further studies are necessary to observe whether the trend of the dominance of the assemble by exotic species will stay in future samplings.Item Padrões sazonais de drosofilídeos (Insecta, Diptera) nativos e exóticos da Caatinga(2021-10-06) Morais, Lucas Domingos de Oliveira; Montes, Martín Alejandro; Garcia, Ana Cristina Lauer; http://lattes.cnpq.br/0563243377799793; http://lattes.cnpq.br/0349635170206363; http://lattes.cnpq.br/5192624756956968Despite its large extension and number of endemic species, the Caatinga is still a neglected biome in terms of the production of scientific knowledge. Until then, only a few studies were concerned with analyzing the seasonal distribution of native and exotic invasive species in the northeast region of Brazil, especially in the Caatinga. This study aimed to evaluate the influence of seasonality on the abundance of native and exotic Caatinga drosophilids. A literature review was carried out, consulting the SciELO, Scopus, Science Direct, Google Scholar and PubMed databases. Using the search terms "Caatinga", "Drosophilidae", "Seasonality", "Seasonality", "Exotic species", "Drosophila", "Rain", "Dry", "Rainfall", "Dry", "Neotropical" and “Invasive species”, we selected five studies carried out between 2010 and 2017 that investigated the seasonality of drosophilids in the Caatinga. The results of these studies were analyzed, and the chi-squared test of adherence was performed to assess the differences between the abundances. Three exotic species and six native species were analyzed, totaling 21,428 individuals. Both native and exotic species showed preference for rain, noting that 84.5% of the total individuals were sampled in this period. The most abundant species was Drosophila willistoni, which corresponded to 36.4% of the total number of individuals collected in both periods. All species were more abundant in the rainy season individually, with the exception of the native Drosophila cardini. The seasonal patterns observed are similar to those of other groups of organisms in Caatinga, such as birds and amphibians, which also have a preference for rain. The seasonality of native species of drosophilids follows patterns observed in other biomes in Brazil and the world, where the preference is for rain. The seasonality of exotic species differs from that observed in some places, probably due to the low number of samplings carried out with exotic species. The results obtained reinforce the need to further investigate the seasonality of exotic drosophilids in the Caatinga, in order to obtain more reliable results about the biology of these species and prevent future biological invasions in the biome.Item Uso de recursos tróficos por Drosophila nasuta (Lamb, 1914) na Floresta Atlântica de Pernambuco(2022-05-27) Ferreira, Ludmila Duda Vicente; Montes, Martín Alejandro; http://lattes.cnpq.br/0349635170206363; http://lattes.cnpq.br/0013823200695197The family Drosophilidae, represented by vinegar flies, is characterized by insects that play a fundamental role in the saprophytic chain, especially in fruits. In recent decades the number of invasive species of this family has been increasing in Brazil, with Drosophila nasuta being one of the most recent cases of successful invasion. Although there is research on its abundance and distribution in the various Brazilian biomes, aspects of its trophic ecology and competitive ability in larval development are not yet known. The present study evaluated the use of trophic resources by D. nasuta for larval development in the Atlantic Forest, domain of Pernambuco. Native fruits of cajá, oiti, acerola, pitanga, pitomba, and exotic fruits of mango, almond, blackberry, jackfruit, jambo, dendê, sapoti, guava, and trapiá were investigated. The fruits were collected on the ground, distributed in jars and sealed until the adult drosophilids hatched. The drosophilids were identified and their abundance was recorded, as well as the hatching rate of larvae per fruit. Shannon-Wiener indices were calculated to attest to trophic amplitude, Pianka's index for niche overlap and Pielou's equitability to attest to the preference of D. nasuta for the sampled fruits. A total of 2,874 drosophilids were identified, with 97.32% belonging to exotic species. Drosophila nasuta was the seventh most abundant species, hatching in four native and one exotic fruit, and also being most present in jambo. The niche amplitude of D. nasuta was H' = 1.20. D. nasuta showed high niche overlap with the exotic species D. ananassae, D. kikkawai and D. malerkotliana. Drosophila nasuta showed the greatest uniformity in resource use among the exotics. It showed a generalist character, hatching mainly from native fruits and in a shorter time than the native drosophilid species. With these data, it can be seen that the preference of D. nasuta for native fruits may indicate a danger to Neotropical drosophilid communities in the Atlantic Forest. That said, the information obtained in this study is fundamental to understand part of the dynamics of the invasion and success of this species in the Atlantic Forest.