https://tede.unioeste.br/handle/tede/524 2026-08-20T20:56:45Z https://tede.unioeste.br/handle/tede/8604 Title: A simplificação funcional em reservatórios neotropicais revelada através de um novo índice de invasão Autor: Jacome, Franceline Ahmann Primeiro orientador: Piana, Pitágoras Augusto Abstract: Studying the number of non-native species of fish, we aim to verify if the introduction of non native species in hydroelectric reservoirs provides functional alteration of the assembly. Fish were collected from twenty hydroelectric reservoirs, belonging to the Neotropical region. The fish were collected with waiting nets, packed in drums and sent to the laboratory. Then, the fish were identified, weighed and measured. For statistical analysis, metrics of abundance in number and biomass and species richness were selected to obtain the degree of introduction. Still, the functional traits of the species were obtained, later converted into functional indices and related to the degree of introduction through Pearson's correlation. The gradient of species introduction present between the reservoirs was significantly associated with functional indices: functional richness increases as this gradient increases, functional equitability, Rao's quadratic entropy and functional dispersion tend to decrease and functional divergence does not vary greatly depending on the introduction of species. These were the standards for most reservoirs, but we also found some caveats, like Capivari’s reservoir. It was possible to verify that non-native species lead to the functional modification of the assembly in which they are found. The importance of using different metrics is also highlighted, since the individual analysis of only one, could lead to a misinterpretation of the results. Publisher: Universidade Estadual do Oeste do Paraná Tipo do documento: Dissertação 2020-02-21T00:00:00Z https://tede.unioeste.br/handle/tede/8587 Title: Gradientes ambientais e delimitação das florestas subtropicais brasileiras: uma revisão sistemática. Autor: Quinto, Gabriela Gariani Primeiro orientador: Temponi, Lívia Godinho Abstract: The use of the term “subtropical” remains inconsistent in the Brazilian scientific literature, especially in the context of forest formations associated with the Atlantic Forest. In this study, we sought to identify which Brazilian forest formations have been classified as subtropical and to characterize the environmental gradients associated with these forests. To this end, a systematic literature review was conducted in the Scopus and Web of Science databases, yielding 372 records, of which 80 studies were included after applying the eligibility criteria. Based on these studies, geographic coordinates and information on climate, elevation, precipitation, and phytophysiognomy were compiled, supplemented by standardized edaphic data. Spatial analyses were also performed using interpolation, density estimation, and environmental suitability modeling via the MaxEnt algorithm. The studies focused primarily on the states of Paraná, Santa Catarina, and Rio Grande do Sul (94%), where the humid subtropical climates Cfa and Cfb predominate. The phytophysiognomies most frequently associated with the term were the Mixed Rainforest (42%) and the Seasonal Semideciduous Forest (23.5%), both within the Atlantic Forest region. Based on the data compiled in the review, areas classified as subtropical are associated with annual mean temperatures between 12.2 and 21.6 °C, annual precipitation between 1,181 and 3,300 mm, and elevations of up to approximately 1,668 m. The results demonstrate that the term “subtropical forest,” as used in the analyzed literature, corresponds to a quantifiable environmental envelope defined by specific combinations of climatic, topographic, and phytophysiognomic attributes, and not necessarily to the official delimitation or actual distribution of a biome within Brazilian territory. Publisher: Universidade Estadual do Oeste do Paraná Tipo do documento: Dissertação 2026-02-26T00:00:00Z https://tede.unioeste.br/handle/tede/8505 Title: Caracterização morfológica e citogenética dos pequenos mamíferos ocorrentes na região oeste do Paraná Autor: Andrietti, Luis Felipe Primeiro orientador: Vogliotti, Alexandre Abstract: The local fauna characterization has been increasingly important in studies of basic and applied ecology, conservation, management and restauration, extinction risk assessments, etc... since it provides more effective data of the relations of the occorring species with the environmental characteristics. Allied to this, the knowledge of the complex patterns of distribution and occurrence of small mammals in Atlantic Forest is still very incipient. In this sense, the present study made captures of small terrestrial mammals in five fragments of western region of Paraná, Brazil, with the aim of characterizing the fauna using three techniques: external and cranial morphometry, cytogenetics and trichology. Ninety eight individuals belonging to seven species of rodents and two species of marsupials were captured. The rodent species were Akodon montensis, Oligoryzomys nigripes, Oligoryzomys flavescens, Euryoryzomys russatus, Thaptomys nigrita and Juliomys pictipes. The marsupials species were Monodelphis dimidiata and Marmosa paraguayana. There were records of chromossomal and morphometry variations for the species Akodon montensis and Marmosa paraguayana. In addition, the first description of the trichological patterns of Monodelphis dimidiata and Oligoryzomys flavescens was made here. Publisher: Universidade Estadual do Oeste do Paraná Tipo do documento: Dissertação 2019-04-18T00:00:00Z https://tede.unioeste.br/handle/tede/8366 Title: Análise citogenética de Tetranematichthys wallacei: contribuições à compreensão da evolução cromossômica em Auchenipteridae Autor: CASAROTTO, Cleisson de Cristo Primeiro orientador: Lui, Roberto Laridondo Abstract: Considering the evidence of chromosomal fusion found in Ageneiosus inermis as basal for Ageneiosus, it becomes possible to suppose that this event may have occurred in an ancestor prior to the diversification that defined the groups representing the tribe Agneiosini ((Ageneiosus + Tympanopleura) Tetranematichthys), which can be clarified through the analysis of Ageneiosini species. In addition, in 25 genera currently valid in Auchenipteridae, there are only eight with cytogenetic studies, and of the 21 species of Ageneiosini, only two had been previously studied through cytogenetics analysis. Given this reality, the objective of this research has been to analyze through cytogenetic methods a first sample of the genus Tetranematichthys. For this, 11 individuals (3 females and 8 males) of Tetranematichthys wallacei from the Guamá river basin have been collected and examined. The diploid number found has been 52 chromosomes (32m+18sm+2st), with no differences between the sexes, and with a fundamental number of 104. Blocks of heterochromatin predominantly terminal and some interstitial has been observed. Hybridization with telomeric sequence [TTAGGG]n showed markings only in the terminal regions, without ITS and hybridizations with 18S rDNA showed its presence in pairs 7 metacentric and 17 submetacentric, and pairs 8 and 10 metacentric with 5S rDNA. Only one chromosome of the pair 7 presented 18S rDNA site in only 3 specimens, which constituted a polymorphism. Tetranmatichthys wallacei has some characteristics that call attention to its current phylogenetic position, as it presents a probable reduction in the diploid number in Auchenipteridae. Furthermore, it shares with Tympanopleura atronasus the 18S rDNA allocated on the long arm of a large submetacentric chromosome (first pair), and does not seem to share with Ageneiosus the first metacentric pair with evidence of fusion in A. inermis. The data generated for T. wallacei added to the other two taxa of the tribe previously studied suggest Ageneiosini as the most different clade in the family by now. Publisher: Universidade Estadual do Oeste do Paraná Tipo do documento: Dissertação 2022-09-30T00:00:00Z