https://repositorio.ufu.br/handle/123456789/5160 Thu, 04 Jun 2026 18:23:21 GMT 2026-06-04T18:23:21Z https://repositorio.ufu.br:443/retrieve/b23f12e1-21dd-4c9f-9dfa-a54c16775eee/ https://repositorio.ufu.br/handle/123456789/5160 https://repositorio.ufu.br/handle/123456789/48726 Title: Atributos da história de vida do cachorro-do-mato (Cerdocyon thous): sazonalidade reprodutiva, tamanho de ninhada e investimento parental em uma região antropizada no Brasil Central Abstract: Life history comprises the set of organismal traits that maximize reproductive success. Attributes such as age and body size at first reproduction, litter size, and parental care are central to evolutionary trade-offs. Understanding the processes shaping these patterns in carnivorous mammals is challenging due to their elusive behavior, large home ranges, and low population densities. This study describes life-history attributes of the crab-eating fox (Cerdocyon thous) in Central Brazil, focusing on reproductive seasonality, litter size, and parental investment. Data were collected between 2010 and 2024 in human-modified landscapes in southeastern Goiás. The breeding season was used as a characteristic of the reproductive cycle to explore a life-history attribute, parturition, which was estimated based on records of pregnancy, lactation, and GPS radio-collar monitoring. Pups were counted when first observed outside dens, with camera traps deployed to assist in monitoring offspring. Body mass data of females and males, as well as female reproductive condition classified as primiparous or multiparous, were related to litter size. Parental investment was assessed through photographic records of adults carrying food and the simultaneous presence of adults and pups. A total of 63 records of female reproductive condition were obtained, including 23 pregnant and 40 lactating females. Pregnant females were observed between June and November, with a peak in July, whereas lactating females predominated between August and November, peaking in September. Estimates of parturition based on 14 independent records indicated events between June and September, with a mean in August, corroborating the expected reproductive seasonality. Nineteen litters were recorded, with a mean of 3,1 pups (sd = 1.6; range: 1–6). We obtained 60 records of adults with pups and 65 records of adults carrying food. Adults carrying food were observed between July and November, and family groups between December and April, indicating that pups remain with their parents for approximately nine months. The observed reproductive seasonality may be associated with greater resource availability during early life stages, which coincide with the end of the dry season and the onset of the rainy season, as well as with prolonged parental care. The description of these reproductive parameters provides robust information on the ecology of the crab-eating fox and is fundamental for understanding the diversity of reproductive strategies within the family Canidae. Additionally, the natural history data presented here contribute to understanding factors influencing population parameters of this species and those with whom it interacts, supporting conservation decision-making, particularly in anthropogenic environments. Fri, 31 Oct 2025 00:00:00 GMT https://repositorio.ufu.br/handle/123456789/48726 2025-10-31T00:00:00Z https://repositorio.ufu.br/handle/123456789/48443 Title: Memorial Descritivo Wed, 25 Feb 2026 00:00:00 GMT https://repositorio.ufu.br/handle/123456789/48443 2026-02-25T00:00:00Z https://repositorio.ufu.br/handle/123456789/48425 Title: Construção e utilização de projeto de Wetland indoor para mitigação dos efeitos citotóxicos de solução de bituca de cigarro Abstract: Cigarette butts are among the most common and overlooked solid waste in terms of environmental impact. Once improperly discarded, they release toxic substances such as trace metals, nicotine, tar, among others, which can cause environmental damage due to their toxicity. Considering their chemical composition and the effects they have on ecosystems, the search for sustainable solutions to this issue becomes necessary. In this context, the aim of this study was to evaluate the effectiveness of an indoor constructed Wetland system using the macrophyte Eichhornia crassipes (water hyacinth) for the phytoremediation of solutions contaminated by cigarette butts. The experiment was conducted over 37 days, using leachate solution concentrations of 25%, 50%, and 100%, in addition to a negative control (distilled water) and a reference group (leachate without plants). The development of the plants in the system was monitored weekly through parameters such as weight measurement, bulb diameter measurement, bulb count, and individual flowering. Analyses were carried out before and after phytoremediation, including tests of physicochemical parameters (using a multiparameter probe) and bioassays with Allium cepa [test methodology based on Fiskesjö (1985) and slide preparation according to Guerra (2002)]. After treatment in the Wetland system, a significant improvement was observed in all physicochemical parameters, including increased dissolved oxygen and redox potential, reduced electrical conductivity and total dissolved solids, as well as an improvement in solution pH. The A. cepa results showed that after treatment in the wetland system, there was an increase in root length, a rise in the mitotic index, and a significant reduction in nuclear and chromosomal alterations, as well as in the frequency of micronuclei. It is concluded that phytoremediation using Eichhornia crassipes in an indoor wetland system is an effective and low-cost alternative for mitigating the environmental impacts caused by the improper disposal of cigarette butts, with the choice of water hyacinth justified by its high capacity for absorbing toxic compounds and rapid growth, characteristics confirmed in this study. Thu, 24 Apr 2025 00:00:00 GMT https://repositorio.ufu.br/handle/123456789/48425 2025-04-24T00:00:00Z https://repositorio.ufu.br/handle/123456789/48222 Title: Inventário da comunidade de mamíferos terrestres de médio e grande porte do Parque Estadual do Pau Furado, Minas Gerais, Brasil Abstract: The Brazilian Cerrado stands out for its high biodiversity, but it is seriously threatened by the conversion of natural areas. Protected Areas are crucial in this regard, as they contribute at the local level to the conservation of native vegetation fragments which can improve species persistence. This study aimed to conduct an inventory of the community of medium and large sized mammals (> 1 kg) in the Pau Furado State Park (PEPF) and to compare the results with previous analyses available in the literature. Monitoring took place between May 2024 and July 2025 using camera traps, resulting in a sampling effort of 2,237 trap-days. Based on 437 independent records, the study recorded 20 species of medium and large sized mammals, a value considered satisfactory by the Jackknife 1 estimator, representing 90.9% of the expected richness for the area. Frequency and relative abundance indices referring to each recorded species were also estimated, based on species-specific detection rates throughout the sampling period. This study indicated the presence of the European hare (Lepus europaeus), an exotic species that had not previously been detected in the PEPF, as well as species classified under threat categories, such as the maned wolf (Chrysocyon brachyurus), the jaguarundi (Herpailurus yagouaroundi), the puma (Puma concolor), and the giant anteater (Myrmecophaga tridactyla). In contrast, the presence of the wild boar (Sus scrofa), an exotic species, was not detected, as previously reported in an earlier inventory of the area. This study updates the knowledge of the park’s mammal fauna, and the results indicate the relevance of PEPF for local biodiversity conservation by highlighting the occurrence of native and threatened species. Additionally, the results point to the need for improved management, especially of the buffer zone, in order to reduce potential impacts on the mammal community. Wed, 04 Feb 2026 00:00:00 GMT https://repositorio.ufu.br/handle/123456789/48222 2026-02-04T00:00:00Z