- Universidade Estadual Paulista "Júlio de Mesquita Filho", Department of Botany, Department Memberadd
- noneedit
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Research Interests: Evolutionary Biology, Plant Biology, Brazil, Ecology, Biodiversity, and 3 moreFlora, Wiley, and Taxon
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The Ornithocephalus clade comprises small epiphytes distributed in 12 genera and c. 120 species. Their flowers have complex structures, the homologies of which are difficult to interpret. Through ontogenetic studies, we identified the... more
The Ornithocephalus clade comprises small epiphytes distributed in 12 genera and c. 120 species. Their flowers have complex structures, the homologies of which are difficult to interpret. Through ontogenetic studies, we identified the origins of the tabula infrastigmatica, floral appendages located in the gynostemium and the labellar callus. Using a scanning electron microscope (SEM), we analysed flowers at various developmental stages from representatives of three genera: Ornithocephalus (two species), Phymatidium (two species) and Zygostates (three species). The tabula infrastigmatica of Phymatidium results from the fusion of the lateral carpels and staminodes, with different degrees of synorganization across species and can be considered a plesiomorphic characteristic within the clade. Contradicting hypotheses of a staminodial origin, the auricles present in this genus derive from the gynostemium. In Zygostates, the lateral appendices derive from staminodes and can show different...
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Screening efforts and genomic surveillance are essential tools to evaluate the course of the COVID-19 pandemic and assist the public healthcare system in dealing with an increasing number of infections. For the analysis of COVID-19 cases... more
Screening efforts and genomic surveillance are essential tools to evaluate the course of the COVID-19 pandemic and assist the public healthcare system in dealing with an increasing number of infections. For the analysis of COVID-19 cases scenarios in Curitiba, Paraná, Brazil, we performed a diagnosis of positive cases, coupled with genotyping, for symptomatic and asymptomatic members of the Federal University of Paraná. We achieved over 1000 samples using RT-qPCR for diagnosis. The posterior genotyping allowed us to observe differences in the spread of strains in Curitiba, Brazil. The Delta variant was not associated with an infection wave, whereas the rapid Omicron variant spread became dominant in less than one month. We also evaluated the general vaccination coverage in the state, observing a striking reduction in lethality correlated to the vaccinated fraction of the population; although lower lethality rates were not much affected by the Omicron variant wave, the same effect wa...
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The genus Centroglossa consists of six species, all endemic to the Atlantic Forest in southern and southeastern Brazil. It was known to occur in the State of Paraná based on three specimens of C. tripollinica collected by the Swedish... more
The genus Centroglossa consists of six species, all endemic to the Atlantic Forest in southern and southeastern Brazil. It was known to occur in the State of Paraná based on three specimens of C. tripollinica collected by the Swedish botanist Per Karl Hjalmar Dusén at the beginning of last century. During recent fieldwork in Brazil, this species was rediscovered in Paraná. The aim of this article is to confirm the presence of C. tripollinica in the State of Paraná, provide a detailed description and illustrations of this species, and discuss its conservation status. A lectotype is designated for C. tripollinica.
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Zygostates consiste de ca. 26 espécies, das quais 15 ocorrem no Brasil. Através de consultas a herbários nacionais e estrangeiros, além da realização de trabalho de campo, oito espécies de Zygostates foram encontradas no Paraná:... more
Zygostates consiste de ca. 26 espécies, das quais 15 ocorrem no Brasil. Através de consultas a herbários nacionais e estrangeiros, além da realização de trabalho de campo, oito espécies de Zygostates foram encontradas no Paraná: Zygostates alleniana, Z. bradei, Z. cornuta, Z. dasyrhiza, Z. lunata, Z. multiflora, Z. pellucida e Z. pustulata. O gênero é registrado para 36 dos 399 municípios paranaenses, principalmente na Floresta Ombrófila Densa e Floresta Ombrófila Mista, localizadas na Serra do Mar, Primeiro e Segundo Planaltos. De acordo com os critérios da IUCN, Z. alleniana, com ampla distribuição no estado, é a espécie de menor risco de extinção, enquanto Z. bradei, Z. pellucida e Z. multiflora, presentes somente em uma localidade, são as mais ameaçadas. Zygostates bradei encontra-se "Possivelmente Extinta" no estado; Z. pellucida e Z. multiflora foram avaliadas como "Criticamente em Perigo". São apresentados uma chave para identificação das espécies, descrições, ilustrações, lista de material examinado, dados sobre distribuição geográfica e estado de conservação dos táxons.
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(Centroglossa tripollinica (Barb. Rodr.) Barb. Rodr. (Orchidaceae: Oncidiinae): lectotypification and rediscovery in the State of Paraná, Brazil). The genus Centroglossa consists of six species, all endemic to the Atlantic Forest in... more
(Centroglossa tripollinica (Barb. Rodr.) Barb. Rodr. (Orchidaceae: Oncidiinae): lectotypification and rediscovery in the State of Paraná, Brazil). The genus Centroglossa consists of six species, all endemic to the Atlantic Forest in southern and southeastern Brazil. It was known to occur in the State of Paraná based on three specimens of C. tripollinica collected by the Swedish botanist Per Karl Hjalmar Dusén at the beginning of last century. During recent fieldwork in Brazil, this species was rediscovered in Paraná. The aim of this article is to confirm the presence of C. tripollinica in the State of Paraná, provide a detailed description and illustrations of this species, and discuss its conservation status. A lectotype is designated for C. tripollinica.
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ABsTrAcT. Phymatidium glaziovii is proposed as a new synonym for P. geiselii. A lectotype and an epitype are selected for P. geiselii. Illustrations and taxonomic discussions are also provided.
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Research Interests: Biodiversity and IUCN
A partir de consultas a herbários nacionais e estrangeiros, cinco espécies e duas variedades de Phymatidium Lindl. foram encontradas no Paraná: Phymatidium aquinoi, P. delicatulum, P. delicatulum var. curvisepalum, P. falcifolium, P.... more
A partir de consultas a herbários nacionais e estrangeiros, cinco espécies e duas variedades de Phymatidium Lindl. foram encontradas no Paraná: Phymatidium aquinoi, P. delicatulum, P. delicatulum var. curvisepalum, P. falcifolium, P. hysteranthum, P. microphyllum e P. microphyllum var. herteri. O gênero é registrado em 35 dos 399 municípios paranaenses, principalmente na Floresta Ombrófila Densa e Floresta Ombrófila Mista, localizadas na Serra do Mar, Primeiro e Segundo Planaltos. Segundo os critérios da IUCN, a maioria dos táxons encontra-se classificada na categoria vulnerável para o estado. Phymatidium delicatulum é a espécie mais comum, com ampla distribuição, e P. hysteranthum a espécie mais restrita, registrada pela primeira vez no estado. Chave de identificação dos táxons, descrições, ilustrações, dados sobre distribuição geográfica e conservação, além de uma lista de materiais representativos, são apresentados.