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17. Drivers of molecular and morphometric variation in Triatoma brasiliensis (Hemiptera: Reduviidae): the resolution of geometric morphometrics for populational structuring in micro-geographic scale

Author

Kamimura, Edgard, primary, Viana, Maria Carolina, additional, Lilioso, Mauricio, additional, Fontes, Fernanda, additional, Pires-Silva, Dayane, additional, Valença-Barbosa, Carolina, additional, Fuente, Ana, additional, Folly-Ramos, Elaine, additional, Solferini, Vera Nisaka, additional, Thyssen, Patricia J, additional, Costa, Jane, additional, and Almeida, Carlos Eduardo, additional

Published
2020
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24. Trypanosomatids (Protozoa: Kinetoplastida) in three species of Armored Catfish from Mogi-Guaçu river, Pirassununga, São Paulo, Brazil

Author

Molina, Julia Pereira, Madi, Rubens Riscala, Solferini, Vera Nisaka, Ceccarelli, Paulo Sérgio, Pinheiro, Hildete Prisco, and Ueta, Marlene Tiduko

Subjects
fish, Trypanosoma, Hypostomus, protozoa, protozoários, cascudos, catfish, peixes
Abstract

Trypanosome infections have been reported in several species of fish, in majority of cases described on the basis of morphological characteristics. Trypanosomes in fish are heteroxenous and transmitted by hirudineans. This study aims to evaluate the prevalence and density of infections by Trypanosoma sp. in blood from three species of catfish, Hypostomus regani, H. strigaticeps, H. albopunctatus, from the Mogi Guaçu River, Pirassununga, São Paulo, Brazil. Further, this study intends to characterize the Trypanosoma specimens found in the blood of these fish by morphological and molecular techniques. The trypanosomes overall prevalence observed was 47.6% with a general average density of 0.75 parasites/µl of blood. Hypostomus regani and Hypostomus strigaticeps showed a significant difference in prevalence. The average densities of parasites were not significantly different among the three fish species. Similar findings were observed for the monthly variations in densities. The parasites found in the three species of catfish studied showed similar morphological characteristics. The morphological data and the statistical analyses used in this study didn’t show the formation of groups. The analyses provided evidence of the presence of pleomorphisms in the trypanosomes found in the three studied fish. Resumo Infecções por tripanossomas foram descritas em diversas espécies de peixes, sendo a maioria das descrições baseada nas características morfológicas. Tripanossomas de peixes são heteroxenos e transmitidos por hirudíneos. Este estudo tem como objetivo a avaliação da prevalência e densidade da infecção por Trypanosoma sp. no sangue de três espécies de cascudos, Hypostomus regani, H.strigaticeps, H.albopunctatus, do Rio Mogi-Guaçu, Pirassununga, São Paulo, Brasil. Além disso, pretende-se a caracterização das espécies de Trypanosoma encontradas no sangue desses peixes, por meio da utilização de técnicas morfólogicas e moleculares. A prevalência total de tripanossomas foi de 47,6%, e a densidade média foi de 0,75 parasitas/ µl de sangue. Hypostomus regani e Hypostomus strigaticeps apresentaram diferenças significativas em prevalência. As médias das densidades dos parasitas não apresentaram diferenças significativas entre as três espécies de peixes estudadas. O mesmo foi observado com a variação mensal das densidades. Os parasitas encontrados nas três espécies de cascudo possuíam características morfológicas semelhantes. As análises morfológicas e estatísticas obtidas neste estudo não mostraram a formação de grupos. As análises evidenciaram a presença de pleomorfismo dos tripanossomas encontrados nas três espécies de peixes estudados.

Published
2016

26. Isolamento e caracterização de dez marcadores microssatélites inéditos em Machaerium villosum Vogel (Fabaceae)

Author

Giudice-Neto, João, Ramos, Rafael Flora, Moraes, Evandro Marsola de, Silva, Márcio José da, and Solferini, Vera Nisaka

Subjects
SSR markers, conservation genetics, estrutura genética, Mata Atlântica, genetic structure, conservação genética, Atlantic forest, microssatélites, Machaerium villosum
Abstract

Machaerium villosum is an important tree species from Southeastern Brazil. We report hereby 10 new microsatellite markers to investigate the structure and genetic diversity of this species. Ninety-seven alleles were detected in 60 specimens from a natural population in Minas Gerais State. High genetic diversity has been found. The mean observed and expected heterozygosities were 0.771 and 0.802, respectively. One locus showed significant Hardy-Weinberg departure and five loci combinations showed significant linkage disequilibrium. These 10 new microsatellite loci will be used to evaluate the genetic diversity of this species in order to understand the fragmentation effects of the Brazilian Atlantic Rain Forest. Machaerium villosum é uma importante espécie do Sudeste do Brasil. Com a finalidade de investigar a estrutura e a diversidade genética desta espécie, foram desenvolvidos 10 marcadores microssatélites inéditos. Identificaram-se 97 alelos em 60 indivíduos de uma população localizada no Estado de Minas Gerais. Elevados índices de diversidade genética foram detectados. As heterozigosidades médias observadas e esperadas foram 0,771 e 0,802, respectivamente. Apenas um loco demonstrou desvio do equilíbrio de Hardy-Weinberg, enquanto cinco combinações de locos mostraram-se em desequilíbrio de ligação. Estes novos marcadores serão úteis para avaliar a diversidade genética de Machaerium villosum e contribuir para o entendimento do efeito da fragmentação da Mata Atlântica.

Published
2014

27. Isolation and characterization of ten new microsatellite markers in Machaerium villosum Vogel (Fabaceae)

Author

Giudice-Neto,João, Ramos,Rafael Flora, Moraes,Evandro Marsola de, Silva,Márcio José da, and Solferini,Vera Nisaka

Subjects
SSR markers, conservation genetics, parasitic diseases, genetic structure, Atlantic forest, Machaerium villosum
Abstract

Machaerium villosum is an important tree species from Southeastern Brazil. We report hereby 10 new microsatellite markers to investigate the structure and genetic diversity of this species. Ninety-seven alleles were detected in 60 specimens from a natural population in Minas Gerais State. High genetic diversity has been found. The mean observed and expected heterozygosities were 0.771 and 0.802, respectively. One locus showed significant Hardy-Weinberg departure and five loci combinations showed significant linkage disequilibrium. These 10 new microsatellite loci will be used to evaluate the genetic diversity of this species in order to understand the fragmentation effects of the Brazilian Atlantic Rain Forest.

Published
2014

29. Phylogeography of the widespread spider Nephila clavipes (Araneae: Araneidae) in South America indicates geologically and climatically driven lineage diversification.

Author

Bartoleti, Luiz Filipe de Macedo, Peres, Elen Arroyo, Fontes, Fernanda von Hertwig Mascarenhas, da Silva, Márcio José, and Solferini, Vera Nisaka

Subjects
NEPHILA pilipes, PHYLOGEOGRAPHY, RAIN forests, BIOMES, BIOGEOGRAPHY
Abstract

Abstract: Aim: Amazonia and Atlantic Rain Forests share a common biogeographical origin and have an interconnected history that includes the drier biomes between them. It is not clear if the establishment of the South American Dry Diagonal promoted isolation between these forests or if connections between them have occurred after this event. We sought to investigate biotic diversification and geographical evolution in these biomes with a phylogeographical study of Nephila clavipes, a rain forest dwelling spider. Location: South America. Methods: We collected 320 individuals from 49 sites and sequenced one mitochondrial and two nuclear DNA regions. We analysed the genetic diversity, structure and demography, did phylogenetic inferences, estimated divergence times, inferred ancestral areas and applied a model‐based approach to test competitive hypotheses on the species’ evolution. Results: An ancient split, coincident with the Central Cordillera final uplift, segregated a Trans‐Andean Colombian lineage from the others. Four lineages occur in Brazil, with a Pleistocene divergence: one in Amazonia, one in the northern and southern Atlantic Forest and two associated with the Dry Diagonal, but also reaching the Southern Atlantic Forest and Amazonia. The biogeographical analysis indicated that some lineages have expanded their ranges along the Pleistocene. Main conclusions: Pleistocene connections of Amazonia and Atlantic rain forests through the central part of the Cerrado were supported. No phylogeographical break was detected along the Atlantic Forest. Geological and climatic events contributed to lineage diversification in N. clavipes. Studying widely distributed species is primary in unveiling evolutionary patterns in highly complex regions. [ABSTRACT FROM AUTHOR]

Published
2018
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31. Genetica

Author

Neves, Elizabeth Gerardo, Andrade, Sónia Cristina da Silva, Silveira, Fábio Lang da, and Solferini, Vera Nisaka

Subjects
Genotypic diversity, Siderastrea, Population structure, Brazilian reefs, Gene flow, Scleractinian corals
Abstract

Acesso restrito: Texto completo. p. 243-254 Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2012-07-06T12:29:56Z No. of bitstreams: 1 __www.springerlink.com_c...l354w86h2u5428u6_fulltext.pdf: 147312 bytes, checksum: 7ff310139ab07e1242fc40a6a20274bf (MD5) Made available in DSpace on 2012-07-06T12:29:56Z (GMT). No. of bitstreams: 1 __www.springerlink.com_c...l354w86h2u5428u6_fulltext.pdf: 147312 bytes, checksum: 7ff310139ab07e1242fc40a6a20274bf (MD5) Previous issue date: 2008 Siderastrea stellata and S. radians are scleractinian coral species that present a remarkable overlap of diagnostic characteristics and sympatric distribution. Moreover, both are viviparous with similar reproductive strategies and with a gregarious larval behavior. Samples of both species from the Brazilian coast were analyzed using 18 isozymic loci to quantify their genetic variability and populational structure. Results confirmed species identity, high intrapopulational variability and revealed moderate genetic structuring among all samples (S. stellata: FST = 0.070; S. radians: FST = 0.092). Based on genotypic diversity analysis, there was evidence that local recruitment may have a minor role in the populations (mean, Go:Ge = 1.00 ± 0.0003 SD for S. stellata and 0.99 ± 0.0023 SD for S. radians). Deviations towards heterozygote deficiencies found in both Siderastrea species could be explained by the Wahlund effect, since there was evidence that populations might be composed of colonies of different ages. In S. radians it is also likely that there is some inbreeding occurring in the studied populations. Despite the brooding pattern and the gregarious larval behavior, our data suggest the occurrence of gene flow along the Brazilian coast. This is the first study on population genetics of Brazilian reef corals.

Published
2008

32. Phylogeography of the dry vegetation endemic species Nephila sexpunctata (Araneae: Araneidae) suggests recent expansion of the Neotropical Dry Diagonal.

Author

Bartoleti, Luiz Filipe de Macedo, Peres, Elen Arroyo, Sobral ‐ Souza, Thadeu, Fontes, Fernanda von Hertwig Mascarenhas, Silva, Márcio José da, and Solferini, Vera Nisaka

Subjects
RAIN forests, CLIMATE change, MITOCHONDRIA, NUCLEAR DNA, GLACIAL landforms
Abstract

Aim The Neotropical Dry Diagonal ( DD) is a corridor of distinct dry environments in central South America. The main hypotheses suggest that these environments may have expanded during the glacial cycles together with a retraction of rainforests, and then shrank when the climate became wetter and warmer. However, few studies have explicitly tested the hypotheses on DD evolution. We conducted a phylogeographical study on Nephila sexpunctata, a spider endemic to Neotropical dry habitats, to enrich the understanding of DD evolutionary history. Location South-western portion of the DD (Cerrado and Chaco). Methods We sequenced two mitochondrial regions and one nuclear DNA region of 65 individuals from 10 locations across the species' range. We conducted analyses of genetic structure, variability, demography and inferred divergence times. We used an ecological niche modelling framework to generate hypotheses on the species' distribution along the last glacial cycle and a model-based approach to test the demographical scenarios that might explain the genetic patterns. Results Both markers presented low genetic diversity. Mitochondrial markers had high genetic structure, with specific geographical lineages within each biome, while the nuclear marker presented low genetic structure. Phylogeographical and demographical events encompass the last glacial cycle, with a strong post-Last Glacial Maximum ( LGM) population and spatial expansion. Model testing corroborated the recent demographical expansion of N. sexpunctata. Main Conclusions Our data suggest that Quaternary climate cycles, when moist forests periodically expanded towards the dry vegetation, influenced the diversification of DD organisms by promoting demographical events. These events might explain the genetic structure observed in N. sexpunctata; differently from what was expected by the Pleistocene refugia model, some DD species may have experienced post- LGM expansion. Climate and geological events have both affected DD-endemic organisms' diversification. [ABSTRACT FROM AUTHOR]

Published
2017
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34. Educação a distância na Unicamp

Author

Valente, José Armando, Solferini, Vera Nisaka, Valente, José Armando, and Solferini, Vera Nisaka

Abstract

Desde a década de 1980 a Unicamp vem realizando projetos de uso e desenvolvimento de Tecnologias na Educação, posteriormente também voltados para a Educação a Distância. Tais iniciativas ocorrem nas diversas unidades, resultando em desenvolvimento de materiais e de metodologias que são aplicadas nos cursos presenciais e também no desenvolvimento de cursos a distância. Esse artigo descreve as principais iniciativas no âmbito da Educação a Distância na Unicamp, como os diferentes Grupos de Trabalho que foram criados, o desenvolvimento do Teleduc, a implantação do Ensino Aberto, a previsão de ações de Educação a Distância no Planejamento Estratégico da Universidade e finalmente a criação do Grupo Gestor de Educação a Distância (GGEaD) e a proposta do plano de ação do GGEaD., Since the 80’s Unicamp has carried out projects on the use and the development of Educational Technology. More recently this effort has focused on Distance Education. These initiatives are taking place in several educational units, resulting in the production of support material and methodologies that can be applied to face-to-face as well as to the development of distance education courses. This article describes the main initiatives related to Distance Education at Unicamp such as the different Working Groups that were created, the development of TelEduc, the implementation of the Open Teaching project, the inclusion of Distance Education actions in the Unicamp Strategic Planning, and, finally, the creation of the Distance Education Management Group and the proposal for its plan of action.

Published
2010

35. Educação a distância na UnicampDistance education at Unicamp

Author

Valente, José Armando, Solferini, Vera Nisaka, Valente, José Armando, and Solferini, Vera Nisaka

Abstract

Desde a década de 1980 a Unicamp vem realizando projetos de uso e desenvolvimento de Tecnologias na Educação, posteriormente também voltados para a Educação a Distância. Tais iniciativas ocorrem nas diversas unidades, resultando em desenvolvimento de materiais e de metodologias que são aplicadas nos cursos presenciais e também no desenvolvimento de cursos a distância. Esse artigo descreve as principais iniciativas no âmbito da Educação a Distância na Unicamp, como os diferentes Grupos de Trabalho que foram criados, o desenvolvimento do Teleduc, a implantação do Ensino Aberto, a previsão de ações de Educação a Distância no Planejamento Estratégico da Universidade e finalmente a criação do Grupo Gestor de Educação a Distância (GGEaD) e a proposta do plano de ação do GGEaD. Palavras-chave Educação a distância; Políticas em educação a distância; Experiências de EaD; Unicamp Abstract Since the 80’s Unicamp has carried out projects on the use and the development of Educational Technology. More recently this effort has focused on Distance Education. These initiatives are taking place in several educational units, resulting in the production of support material and methodologies that can be applied to face-to-face as well as to the development of distance education courses. This article describes the main initiatives related to Distance Education at Unicamp such as the different Working Groups that were created, the development of TelEduc, the implementation of the Open Teaching project, the inclusion of Distance Education actions in the Unicamp Strategic Planning, and, finally, the creation of the Distance Education Management Group and the proposal for its plan of action. Keywords Distance education; Policy in distance education; Experiences of distance education; UNICAMP

Published
2009

50. Chromosomal studies of three species of Bidens(L.) (Asteraceae)

Author

Tereza, Grombone-Guaratini Maria, Mansanares, Mariana Esteves, Semir, Joāo, and Solferini, Vera Nisaka

Abstract

AbstractThe chromosomal numbers of three species of Bidenswere determined based on an analysis of somatic metaphases. The species studied were Bidens pilosaL., Bidens subalternansDC and Bidens alba(L.) DC, all of which belong to the Bidens pilosaspecies complex. The three species have a similar morphology: Bidens pilosaand B. subalternansare widely distributed in agricultural areas, in disturbed habitats and along roadsides, whereas B. albaoccurs only along the seacoast. Bidens pilosahas 2n= 72 and B. subalternansand B. albahas 2n= 48. These numbers agreed with the basic chromosomal number of n= 12 reported for the tribe Heliantheae and show that the number of metaphase chromosomes can be used to distinguish Bidens pilosafrom the other two species of the B. pilosacomplex in southeastern Brazil.

Published
2006
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