01.1 - Graduação (Sede)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/2
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Resultados da Pesquisa
Item Mudanças na comunidade macrobentônica associada à atividade de bioturbação do camarão Neocallichirus maryae Karasawa, 2004 na Praia de Mangue Seco, Igarassu - PE(2020-01-27) Brito, Joyce Carina Barbosa; Carvalho, Mônica Lúcia Botter; Marinho, Nidia Cristiane de Mélo; http://lattes.cnpq.br/9994922802609034; http://lattes.cnpq.br/1762304533046987; http://lattes.cnpq.br/4492135358829944Benthic biodiversity is responsible for providing various ecosystem services to the environment, and from it arises a trophic base that helps maintain these services and the quality of human life. However, several processes can change this dynamic, since the species that inhabit the benthos are sensitive to environmental changes. In this work we will focus on a natural activity that can change the properties of sediments, called bioturbation. It is pointed out as a natural activity that disturbs the environment by disturbing sediment particles in the modeling of their burrows. This process is well studied in terrestrial environments and in other taxonomic groups. However, more research is still needed on the effects of bioturbation carried out in the process of excavation of Axiidea crustaceans in beach environments, areas of great ecological and economic value for the livelihood of riverside families and the like. Thus, the present study aims to evaluate the effects of spatial changes in the macrofauna community associated with the presence of the burrowing shrimp Neocallichirus maryae Karasawa, 2004. The work was carried out on the beach of Mangue Seco, in the municipality of Igarassu, in the north coast of the state. from Pernambuco. We defined four types of treatments between proximity and depth of samples. We collected 7 samples close to the gallery opening (P) and distant from the gallery opening (L), with a distance of 50 cm between them. These samples were divided into two strata: shallow (0-5cm) and deep (5-10 cm). Thus, our treatments were: Near (P) and Far (L) from the opening of galleries. And two stratum levels of the samples: Superficial (0-5 cm) and deep (5-10 cm). We observed differences in abundance between the sample extracts, which were accounted for. We found a total of 149 organisms in total. Which, separated by the respective treatments, were collected: 3 organisms in the Deep treatment (5-10 cm), 71 organisms in the Superficial treatment (0-5 cm), 8 organisms in the Far treatment (L) and 66 organisms in the Near treatment ( P). The presence of shrimp N. maryae demonstrated a direct influence on the composition of the macrofauna, on the treatments close to the gallery of N. maryae and on the superficial areas of the sediment. Which leads us to believe that other factors such as the biotic and abiotic properties of the beach have influenced the distribution of benthic organisms. Further studies are needed to measure how anthropic impacts may have influenced our results and to show the role of ecosystem engineering in burrower shrimp bioturbation activity. This research brings insights on bioturbation related to macrobenthic communities, which can serve as a source for future studies on the effects of bioturbation on benthic organisms, which are still very scarce.Item Triploidia em organismos marinhos: uma análise bibliométrica(2022-06-02) Costa, Bruno Borba Santos Ferreira; Olivera Gálvez, Alfredo; http://lattes.cnpq.br/7002327312102794; http://lattes.cnpq.br/0090047327576200Triploidy can be defined as the presence of three complete sets of chromosomes in cells. The induction of this state can be performed in some animals as a method to obtain advantageous characteristics for aquaculture. The present study aims to provide a bibliometric analysis on research trends related to the use of triploidy in marine organisms. The analysis included scientific productions indexed to the Scopus and Web of Science databases, from 1984 to 2021. The compiled data was converted to the R-data reading format with the RStudio software along with the use of the Bibliometrix package. The analyzes were performed using the Biblioshiny tool. A total of 190 articles published among 78 different journals were obtained, with the participation of 619 authors and collaboration between different countries. For the period analyzed, there was an annual growth rate of publications of 7.36%. Canada, the United States and Norway were the countries with the highest number of publications. The most frequent topics were represented on a thematic map according to a ranking of centrality and density. Topics such as "growth", "survival", "sterility", "Atlantic salmon", and "Crassostrea gigas" were classified as basic themes, with great relevance for the structuring of the research field, but still in development. These data provide important information on trends in triploidy studies with marine organisms, contributing to future studies in this field of research.Item Variação espacial da macrofauna bentônica em uma praia urbanizada no litoral norte de Pernambuco(2021-07-13) Ximenes, Falber Fado Araújo Pina; Carvalho, Mônica Lúcia Botter; http://lattes.cnpq.br/1762304533046987; http://lattes.cnpq.br/6318894893166992