http://repositorio.ufc.br/handle/riufc/22005 2026-04-21T00:24:56Z http://repositorio.ufc.br/handle/riufc/85077 Título: Inventário de arcadas de tubarões de uma coleção científica regional e estimativa do comprimento total dos indivíduos Autor(es): Silva, Antônio Alyson Ripardo de Lima Abstract: Zoological collections constitute important repositories of biological information, playing a fundamental role in documenting biodiversity, developing scientific research, and training human resources. Among the materials preserved in these collections, shark dental arches stand out for their high scientific value, due to their structural resistance, morphological diversity, and taxonomic relevance. This study aimed to catalog and describe the shark dental arches deposited in the Dias da Rocha Ichthyological Collection (CIDRO) at the Federal University of Ceará. Seventy-four dental arches belonging to at least 14 shark species were analyzed, encompassing representatives of the orders Hexanchiformes, Orectolobiformes, Lamniformes, and Carcharhiniformes. The jaws were examined for general morphology; for each specimen, the dental formula was determined, and measurements of the perimeter of the upper and lower jaws were obtained, in addition to obtaining morphometric data, including measurements of interdental distance and bite circumference, used for total length estimates when possible. The results highlight the high taxonomic diversity represented in the collection, as well as the importance of dental arches as diagnostic structures and materials of high curatorial value. The organization and standardization of the information presented contribute to expanding the scientific potential of CIDRO, strengthening its role as a reference collection for studies on the diversity and dental morphology of sharks off the coast of Ceará. Tipo: TCC 2025-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/85061 Título: Estratégias morfofuncionais foliares de espécies anuais em dunas costeiras no litoral cearense Autor(es): Magalhães, Vitor Vasconcelos Abstract: Coastal dunes are dynamic and environmentally extreme ecosystems, characterized by sandy soils, high drainage, water deficit, salinity, strong winds and high irradiance, which impose multiple stresses on plants and make this environment a suitable model for investigating leaf strategies associated with stress tolerance. This study aimed to understand how morphological, anatomical and histochemical leaf traits of annual species from coastal dunes in Ceará are related to tolerance to multiple stresses and to the maintenance of these ecosystems. Twelve annual species were collected in semi-mobile and fixed dunes in the municipality of São Gonçalo do Amarante, Ceará, and analyzed through external morphological characterization, leaf area measurements, anatomical description in transverse and paradermal sections, and histochemical tests to detect hydrophilic, lipophilic and protein compounds. Traits such as leaf area, lamina thickness, epidermis, outer periclinal wall, cuticle, mesophyll organization, stomatal density, guard cell length, leaf vein density and the presence of trichomes and idioblasts were quantified and evaluated using descriptive statistics, tests for comparison among species, comparisons between leaf surfaces and correlation analyses. There was wide interspecific variation in leaf area and leaf thickness, with a predominance of small to medium leaves and structurally robust laminae, a mostly dorsiventral mesophyll, and an adaxial epidermis generally thicker than the abaxial one. The outer periclinal wall, together with the presence of mucilaginous idioblasts and cells containing phenolic compounds, indicated structural reinforcement and greater water-retention capacity in several species, while stomatal density varied widely and was inversely related to guard cell length. Taken together, these results indicate that the studied species share a set of traits compatible with predominantly conservative water‐use strategies, while exhibiting distinct functional combinations that allow different ways of tolerating stress and contributing to the persistence of annual vegetation in coastal dunes of Ceará. Tipo: TCC 2026-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/85059 Título: Estratégias morfoanatômicas foliares associadas à deciduidade em espécies predominantes do carrasco Autor(es): Pereira, Letícia Kida Abstract: The Caatinga is one of the Seasonally Dry Tropical Forests (SDTFs), characterized by a high degree of endemism, irregular rainfall with long dry periods, and high temperatures. Carrasco is a vegetation type occurring on sedimentary formations within this domain and is characterized by dense, deciduous, non-spiny shrub vegetation with thin branches, in addition to occurring on soils with low fertility and low water retention. The aim of this study is to investigate foliar morphoanatomical variations in species predominant in carrasco vegetation, seeking to identify structural attributes that may be associated with tolerance to water stress, as well as the correlation of these attributes with leaf deciduousness. The study was carried out in the Reserva Particular do Patrimônio (RPPN) Serra das Almas, on the leeward side of the Ibiapaba Plateau, in a one-hectare plot within the carrasco phytophysiognomy. Leaf samples were collected from ten species, representing 85% of the importance value of the studied area, and were used for morphoanatomical and histochemical analyses. Additionally, functional traits were obtained from the DryFlor database, and the phenological characterization of the species was performed based on field observations and consultation of specialized literature. Anatomical results showed the presence of mucilage in the epidermis among species, as well as the occurrence of bundle sheath extensions, in addition to leaf thickness, epidermis, and cuticle with lower thickness when compared to evergreen species. From the statistical analyses, the results showed significant differences in the correlations between LMA and P and N, as well as between SD and LT among species. The PCA did not show significant results between phenology and functional traits, although it demonstrated a spatial trend among early- and late-deciduous species. Thus, it was possible to observe foliar anatomical strategies among deciduous species that enable them to persist in environments with high water stress. In addition, it was possible to observe that there is a tendency toward both acquisitive and structural strategies among carrasco species. Therefore, further studies are necessary to deepen the understanding of the relationship between phenology and functional traits within carrasco areas. Tipo: TCC 2026-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/85026 Título: Revisão bibliográfica sobre a sazonalidade da nidificação de tartarugas marinhas em praias do nordeste brasileiro monitoradas pelo Projeto TAMAR (2015-2025) Autor(es): Nascimento, Gabriela Frota do Abstract: Sea turtles are organisms sensitive to environmental changes, particularly during the reproductive phase, when they return to beaches to nest. This study aims to review the scientific literature on the nesting seasonality of sea turtles in beaches of Northeast Brazil monitored by the TAMAR Project between 2015 and 2025. Seven studies were selected based on defined inclusion and exclusion criteria, analyzing seasonal nesting patterns, regional variations, and associated environmental factors such as sand temperature, precipitation, relative humidity, lunar phase, and coastal vegetation presence. Findings indicate that E. imbricata shows peak nesting activity between November and March, C. caretta mainly from October to March, and L. olivacea from March to August. The results highlight the importance of continuous monitoring and adaptive management strategies in the face of climate change and coastal urbanization, aiming to conserve these endangered species. Tipo: TCC 2025-01-01T00:00:00Z