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 Diversidade de besouros escarabeíneos (Coleoptera: Scarabaeidae: Scarabaeinae) da Universidade Federal Rural de Pernambuco UFRPE/Sede(2024-10-04) Assis Júnior, José Fernando de; Liberal, Carolina Nunes; http://lattes.cnpq.br/7390869942259612; http://lattes.cnpq.br/8327288458916924Scarab beetles are called "dung beetles", this name was given due to the peculiar behavior of some individuals, these beetles modulate and roll some balls made with the feces of other animals. In Brazil, 786 species included in 69 genera are recorded, and in the state of Pernambuco, 16 species distributed in 8 genera are found. The consequences of the behavior and life cycle of these individuals include several environmental services, such as increased nutrient cycling rate in the environment, soil fertilization and aeration, reduced transmission of some vertebrate parasites by killing larvae and eggs, secondary seed dispersal and contribution of biomass to higher trophic levels. However, environmental disturbances can drastically alter the structure of the community, decrease diversity and lead to the loss of ecosystem functions of scarab beetles. The present study aimed to understand the diversity of scarab beetles at the Federal Rural University of Pernambuco. With approximately 147 hectares of extension, the UFRPE Main Campus has areas composed of vegetation from the Atlantic Forest biome. Three collections were carried out in each season, two collections in August and October 2023, in addition to four collections in the months of January, March, April and May 2024, totaling six collections. To capture scarab beetles, 10 points were delimited at the Federal Rural University of Pernambuco, with a minimum distance between points of 100 m. The area was mapped using the AlpineQuest program and at each of the points a set of two pitfall traps was installed, 3 m apart from each other, totaling 20 traps in the study area. Due to the fall of trees and opening of the canopy, the vegetation structure was modified, making it necessary to change some points for collection during the rainy months. For the ecological analysis, we used the Rényi Diversity Profile, the Shapiro-Wilk test, the Levene test and the Tukey test to complement the results of the Analysis of Variance. Analyzing the baits and seasons, we observed that species diversity was higher in the feces pitfalls and in the rainy season. The analysis of variance for species abundance showed that there was an interaction between the bait and season factors, in other words, the impact of one factor depends on the level of another factor, which was not observed in the analysis of variance for species richness.Item Diversidade funcional da comunidade de besouros escarabeíneos (Coleoptera: Scarabaeidae: Scarabaeinae) na Estação Ecológica do Tapacurá, Pernambuco, Brasil(2024-03-08) Silva, Bruno Bispo da; Liberal, Carolina Nunes; http://lattes.cnpq.br/7390869942259612; http://lattes.cnpq.br/1411320038538078The attractiveness of scarabeine beetles (Coleoptera: Scarabaeidae: Scarabaeinae) for different types of resources means that they can be divided into guilds related to behavior (resource allocation, diet and period of activity) and morphological variations (size, shape and biomass ). Different combinations of these characteristics confer different competitive capabilities between species, which can reduce direct competition and allow the coexistence of different species. The impoverishment of dung beetle communities implies a disruption in the important ecological services they offer. Thus, the present study aimed to analyze the functional diversity of the dung beetle community at the Estação Ecológica do Tapacurá, PE. Specifically, identify the functional groups present in the community according to functional traits: biomass, food preference and resource allocation. For this, two collections were carried out in 2023, one in February (dry season) and another in March (rainy season), at ten points, distributed to form a transect, with a minimum distance between points of 100m. At each point, a set of two pitfall traps were installed, baited with human feces and rotted bovine spleen and exposed for 48 hours/collection. A total of 940 beetles were collected, 763 from meat baits (352 in the dry season and 411 in the rainy season) and 177 in the feces baits (90 in the dry season and 87 in the rainy season). 19 species were identified, belonging to eight genera: Anomiopus, Ateuchus, Canthidium, Canthon, Coprophanaeus, Deltochilum, Dichotomius and Eurysternus. Beetles were classified into functional groups based on size according to biomass (large and small), resource allocation and food preference. The study showed that the community is mainly composed of small beetles, paracoprids or telecoprids, generalists or scavengers, while endocoprids and coprophages were represented by a single species each. The lower number of beetles in the feces bait suggests a low abundance of mammals in the region, its main source of resources. Highlighting the functional diversity present among dung beetles in the region and the importance of continuing to monitor these communities to understand their role in ecosystems.Item Diversidade e período de atividade de besouros escarabeíneos (Coleoptera: Scarabaeidae: Scarabaeinae) da Estação Ecológica do Tapacurá(2023-09-15) Cavalcanti, Juliana Ferreira; Liberal, Carolina Nunes; http://lattes.cnpq.br/7390869942259612; http://lattes.cnpq.br/3551522195847302Scarab beetles are detritivorous insects popularly known as “dung beetles”. They have a varied feeding habit, in general they can feed on feces (coprophages), decaying meat (necrophages) or decaying fruits (saprophages), or even on more than one type (generalist). Besides that, they play a very important role as bioindicators, as they are highly sensitive to environmental changes, undergoing changes in the structure of their community. Deforestation and fragmentation of forest environments are some of the most damaging disturbances to biodiversity by which scarab beetles are heavily affected. The Atlantic Forest is one of the Brazilian biomes in the most critical state of degradation, listed as one of the 36 biodiversity hotspots. The objective of this work was to know the diversity and period of activity of scarab beetles in the Atlantic Forest fragment of Tapacurá Ecological Station (8° 02′ 27.8″S and 35° 11′ 46.3″W), located in the municipality of São Lourenço da Mata, Pernambuco. Two samples were carried between the months of february and march, and march and april, where ten points were determined, distributed in order to form a transect. At each point, a set of two pitfall traps was installed, totaling 20 traps per area. Pitfalls were baited with fresh human feces and rotten bovine spleen. A total of 940 individuals distributed in five tribes, seven genera and 18 species of Scarabaeinae were captured. The most abundant species were Canthon terciae (34.47%), Deltochilum kolbei (23.40%) and Dichotomius guaribensis (14.47%). Of the 18 species collected, only 12 occurred in sufficient numbers to be classified in trophic guilds. Among these, seven were considered necrophagous , five generalists, and none were coprophagous. As for the period of activity, four species showed diurnal activity, four showed nocturnal activity, and another four species were considered of continuous activity. Rényi’s diversity profiles showed that the carrion bait had a greater diversity of species taking into account the most abundant species, and the feces bait was more diverse considering the rarest species.