Teses em Zoologia (Doutorado) - PPGZOOL/ICB

URI Permanente para esta coleçãohttps://repositorio.ufpa.br/handle/2011/3419

O Doutorado Acadêmico foi criado em 1999 e pertence ao Programa de Pós-Graduação em Zoologia (PPGZOOL) do Instituto de Ciências Biológicas (ICB) foi consolidado como um convênio entre Universidade Federal do Pará (UFPA) e Museu Paraense Emílio Goeldi (MPEG).

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Agora exibindo 1 - 5 de 5

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Conservação de tartarugas marinhas na costa maranhense, Brasil
(Universidade Federal do Pará, 2022-03) RIBEIRO, Luis Eduardo de Sousa; BARRETO, Larissa Nascimento; http://lattes.cnpq.br/1295307492454506; HTTPS://ORCID.ORG/0000-0002-3396-4821; PEZZUTI, Juarez Carlos Brito; http://lattes.cnpq.br/3852277891994862; https://orcid.org/0000-0002-5409-8336
Sea turtles have a long history of human exploitation around the world, which has contributed to the species population decline, along with other threats, mainly by accidental capture during fishing, habitat destruction, and pollution. Currently, interaction with fishing is the largest cause of mortality among sea turtles, followed by ingestion of inorganic material (garbage). The waste accumulation in the oceans, mainly plastic, has attracted considerable attention in recent decades since pollution is a major threat to marine life. In this study, we mapped the occurrence and nesting areas of each sea turtles in the coastal zone of Maranhão; analyzed the frequency of strandings all over the years; and evaluated the impacts on sea turtle populations in the Lençóis Maranhenses National Park, as well as diet composition and ingestion of solid waste. This research includes records of strandings of live or dead animals between 2005 and 2020, coming from the database of the Projeto QUEAMAR – Quelônios Aquáticos do Maranhão - UFMA - Federal University of Maranhão, and bi-monthly campaigns to Lençóis Maranhenses National Park. We observed five species of sea turtles along the entire Coast of Maranhão and reproductive records for two of them. From the impacts observed, anthropic interaction was the most observed factor (n=35), with drowning and amputation being the principal consequences of intermeshing (n=12). Intestinal obstruction caused by ingestion of inorganic material was also frequently observed (n=13). During this research, two Marine Seismic Surveys 3D were conducted to prospect for oil and gas, which coincided with a significant increase in the frequency of strandings in Lençóis Maranhenses National Park, possibly caused by noise pollution through noise swells generated by air cannons. Although the Maranhão coast is covered by legally protected areas, such as the Lençóis Maranhenses National Park and the Cururupu Extractive Reserve, long-term studies with species of international migratory cycle, such as sea turtles, which occupy an important position in the conservation scenario, allows detecting trends and temporal changes, as well as evaluating the impacts of anthropogenic activities in coastal areas.
Acesso aberto (Open Access)
Diversificação morfológica e molecular em lagartos Dactyloidae sul-americanos
(Universidade Federal do Pará, 2015-03-30) D’ANGIOLELLA, Annelise Batista; CARNAVAL, Ana Carolina de Queiroz; http://lattes.cnpq.br/1268469210243345; PIRES, Tereza Cristina Ávila; http://lattes.cnpq.br/1339618330655263
Acesso aberto (Open Access)
Impacto dos fatores antropogênicos e ambientais na dinâmica do microbioma e nas interações hospedeiro-patógeno em anfíbios
(Universidade Federal do Pará, 2025-04) MOSER, Camila Fernanda; BECKER, Guilherme; PELOSO, Pedro Luiz Vieira Del; http://lattes.cnpq.br/0963420424755544; https://orcid.org/0000-0003-0127-8293
Amphibians are among the most threatened vertebrates, with 41% of species at risk of extinction due to habitat loss, climate change, invasive species, and emerging diseases. A key factor influencing their health is the skin microbiota, a community of symbiotic microorganisms that contribute to immunity and disease resistance. However, this microbiome is highly sensitive to environmental disturbances, which can alter its composition and reduce its protective functions. One of the major threats to amphibians is chytridiomycosis, caused by Batrachochytrium dendrobatidis (Bd), a pathogen that disrupts skin integrity and weakens host defenses, leading to high mortality rates. This infection interacts with environmental stressors, including pollution and habitat degradation, increasing amphibian vulnerability. This thesis explores the composition and ecological drivers of amphibian skin microbiota, its interactions with Bd, and the effects of environmental disturbances. The results show that microbiome diversity varies across species, seasons, and environmental conditions. A case study on Bd dynamics across different species and environmental conditions demonstrated that infection prevalence and load were lower in warmer temperatures and in species with non-aquatic habits, suggesting that abiotic factors and host ecology significantly influence Bd susceptibility. Furthermore, seasonal variations in microbiota composition were observed, with microbial diversity generally decreasing in colder months. These seasonal shifts could be linked to changes in amphibian behavior and immune function, highlighting the need for long-term monitoring of microbiota-host-pathogen interactions. In conclusion, this thesis provides novel insights into the complex interactions between amphibian microbiota, environmental changes, and disease dynamics. Understanding how anthropogenic disturbances and seasonal variations shape microbiome diversity is essential for developing effective conservation strategies. Future research should focus on longterm monitoring of amphibian microbiomes, explore the role of larval-stage microbiota in pathogen resistance, and investigate microbiome-based interventions to support amphibian populations facing increasing environmental threats.
Acesso aberto (Open Access)
Sistemática e diversificação dos gêneros Hylopezus e Myrmothera (Aves:Grallariidae)
(Universidade Federal do Pará, 2015-03-31) CARNEIRO, Lincoln Silva; ALEIXO, Alexandre Luis Padovan; http://lattes.cnpq.br/3661799396744570
Acesso aberto (Open Access)
Sistemática molecular, biogeografia e taxonomia do gênero Megascops kaup, 1848 (Aves, Strigidae)
(Universidade Federal do Pará, 2013-06-28) DANTAS, Sidnei de Melo; ALEIXO, Alexandre Luis Padovan; http://lattes.cnpq.br/3661799396744570

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