https://repositorio.ufpb.br/jspui/handle/tede/3749 2026-04-06T22:18:41Z 2026-04-06T22:18:41Z Oliveira, Felipe Araujo de https://repositorio.ufpb.br/jspui/handle/123456789/19583 2021-02-24T06:22:04Z 2016-10-03T00:00:00Z

Título: Variação geográfica na ecologia de tantilla melanocephala (serpentes: colubridae), em áreas de caatinga e floresta atlântica do nordeste na região neotropical Autor(es): Oliveira, Felipe Araujo de Orientador: França, Frederico Gustavo Rodrigues Abstract: Species with wide geographic range are suitable for studies on the comprehension of how environmental variations can influence the ecology of a species. In the present study we verified how populations of Tantilla melanocephala (Serpentes: Colubridae) answer to environmental variations in distinct areas, such as the Caatinga and the Northeast Atlantic Forest. We analyzed a total of 252 specimens from both biomes. The populations of T. melanochephala, despite the fact that they occupy different surroundings considering temperature, humidity, solar incidence, vegetation, pluviometry and food availability, they show conserved ecology and morphology. Neither dimorphism nor morphological disparities were found between the biomes. Furthermore, we found phylogenetic constraints in the diet of the species, witch showed specialization in the consumption of few food items, witch belong to the same taxonomic family – Chilopoda. However, subtle differences like witch genus of the centipedes are more consumed in each area were evidenced. Regarding its reproduction, T. melanocephalla had resemblances between the populations from both locations, such as the number and size of eggs and follicles. It was only acknowledged variation on the period of oviposition, which can be related to environmental features of the biomes, like distinct rainfall regimes and humidity. Tantilla melanocephala is a snake with predominant influence of historical features over ecological ones, expressing high phylogenetic constraints in its life history. Editor: Universidade Federal da Paraíba Tipo: Dissertação

2016-10-03T00:00:00Z Braga, Laíza de Queiroz Viana https://repositorio.ufpb.br/jspui/handle/123456789/18495 2021-02-20T16:01:32Z 2019-11-25T00:00:00Z

Título: Perfil sorológico e molecular de 20 parasitos e avaliação clínica de jaguatiricas (Leopardus pardalis) e cachorros-do-mato (Cerdocyon thous) em agroecossistema no Pantanal de Miranda, Brasil Autor(es): Braga, Laíza de Queiroz Viana Orientador: Rocha, Fabiana Lopes Abstract: Investigating parasites in wildlife fauna is important for understanding how they remain present in the wild as for the risks they pose to the health of their hosts, especially when they can also infect domestic animals and humans. However, just a few researches have worked involving a wide parasitic panel and the infeccion’s influence on the health of wild animals. Here, we investigated 20 parasites in carnivores through indirect (IFAT, ELISA, MAT, AAT and FAVN) and direct (molecular and parasitological) tests, selected by their pathogenic potential for wild and domestic animals and/or human. In parallel, we evaluated clinical aspects, body conditions, hematocrit and 13 biochemical parameters. For this purpose, 13 ocelots (Leopardus pardalis) and 12 crabeating fox (Cerdocyon thous) were captured in a mosaic composed by rice fields, pasture and native forest in the Pantanal of Miranda, Brazil. We detected 14 parasites: seven transmitted by ticks, four trypanosomatids, Toxoplasma gondii, Leptospira and rabie virus, of which eight showned a higher than 50% prevalence. The coinfection rate per individual oscilated between two and nine parasites. We describe the first report of Rangelia vitalli in vertebrates in the Pantanal and Crithidia mellificae in carnivores. 18 animals showed clinical and/or laboratory aspects alterations. Ocelots were more parasitized and more affected in clinical and laboratory aspects than crab-eating foxes. We highlight the Leptospira’s serum prevalence and the high titers (up to 6,400), indicating active cycle. We detected 17 serovars, being the first description of Cynopteri, Butembo and Bataviae in free-living carnivores in Brazil and Autumnalis and Copenhageni in ocelots. The most prevalent infective serovars indicate superposition with the parasite bovine cycle. We discuss Leptospira in the area from One Health’s perspective. The work results may be related to the animals continuous exposure to agrochemicals, due to its immunosuppressive effect. With the release of several compounds in Brazil in 2019, it’s imperative to expand research about their impacts on wildlife. Editor: Universidade Federal da Paraíba Tipo: Dissertação

2019-11-25T00:00:00Z Peixoto, Gabriela Marques https://repositorio.ufpb.br/jspui/handle/123456789/18494 2021-02-23T19:24:37Z 2014-05-02T00:00:00Z

Título: Relação entre os componentes da biodiversidade: diversidade filogenética, funcional e taxonômica de taxocenoses de lagartos do cerrado brasileiro Autor(es): Peixoto, Gabriela Marques Orientador: Vieira, Gustavo Henrique Calazans Abstract: Estimates of phylogenetic and functional diversity are proposed as a promising way of explaining the role of interactions between species and the functioning of ecosystems. In this study we evaluated how the functional structure of the different assemblages of Brazilian savannah lizards is related to taxonomic and phylogenetic diversity. For this, we evaluated information about 5520 individuals of 50 species, at twenty sampling sites, located in both continuous Cerrado and enclaves of Amazon Savannah. We estimate species richness and taxonomic diversity through the Simpson Index. The functional diversity was obtained through traits related to morphometry and ecological aspects of each species. Phylogenetic diversity was based on recent phylogenies for Brazilian lizards. Our results revealed that phylogenetic diversity and species richness were positively related to functional diversity, which did not occur with the index of taxonomic diversity. Most of the functional traits were conserved within the lineages, and assemblages were structured either in aggregate (influence of environmental filters) or functionally dispersed (limiting similarity). We conclude that suppression of species of phylogenetically distinct lizards within the assemblages leads to loss of functional role, which may directly affect ecosystem processes. And what data regarding the phylogenetic aspects, or the species richness itself, can be good substitutes to infer about the functional information that influences the assembly rules of Cerrado lizard assemblages. Editor: Universidade Federal da Paraíba Tipo: Dissertação

2014-05-02T00:00:00Z Máximo, Leandro do Nascimento https://repositorio.ufpb.br/jspui/handle/tede/8614 2018-09-06T00:02:02Z 2015-05-19T00:00:00Z

Título: Estrutura e dinâmica de populações e comunidades de macroalgas em ambientes recifais da Paraíba. Autor(es): Máximo, Leandro do Nascimento Orientador: Miranda, George Emmanuel Cavalcanti de Abstract: Algae are some of the most important organisms in reef environments as make up the base of the food chain, act as habitat structuring and serve as potential environmental health bio-indicators. This study aimed to analyze the structure and dynamics of macroalgae assemblages in Paraíba shallow reefs and evaluate the use of these bodies / processes as a mechanism bioindicador. This work was divide into three case studies in which the structure and dynamics of macroalgae assemblage play a fundamental role. The first work aimed to know the status of the population of Gracilaria caudata J. Agardh and macroalgae community associated with the Ponta de Mato reef, Cabedelo/PB, after the overexploitation impact occurred nearly 20 years and as a comparison based on a previous database. The strong impact on the dominant population was answered replacement of species and area once dominated by G. caudata was currently dominate by Jania subulata (Ellis & Solander) Sonder and Sargassum sp. The second study aimed to assess environmental health from two reef environments subjected to different tourist pressures, Picãozinho and São Gonçalo both located in João Pessoa/PB. In areas of intense tourist activity, the algae presented with lower richness, biomass and diversity compared with areas that receive no tourists, suggesting that the environment is under the influence of disorders and stress regime. The third case study aimed to analyze the structure and dynamics of macroalgae assemblages of Formosa reef, Cabedelo/PB with a time perspective. There was temporal variation in descriptors richness and biomass, with the lowest figures recorded in August/2013 and August/2014 and the highest in February/2014 and May/14. Understanding how the impacts (natural or anthropogenic) affect the distribution and dynamics of the species is important in the selection and potential use of bio-indicator species of environmental disturbances. Editor: Universidade Federal da Paraíba Tipo: Dissertação

2015-05-19T00:00:00Z