scholarly journals Virulence Variability of Puccinia coronata f. sp. avenae Isolates Collected in Three Counties from Rio Grande do Sul State, Brazil

Plant Disease ◽  
2007 ◽  
Vol 91 (1) ◽  
pp. 66-70 ◽  
Author(s):  
E. A. Vieira ◽  
F. I. F. Carvalho ◽  
M. S. Chaves ◽  
A. Costa de Oliveira ◽  
G. Benin ◽  
...  
Keyword(s):  
North American ◽  
Infection Type ◽  
Rio Grande ◽  
High Variability ◽  
Puccinia Coronata ◽  
Rio Grande Do Sul ◽  
American System ◽  
The North ◽  
High Infection ◽  
High Level

Using isolates collected in three counties of Rio Grande do Sul State, Brazil, the goals of this work were to determine (i) the pattern of virulence or avirulence of the isolates to 25 Pc resistance genes, (ii) the similarity in virulence among Puccinia coronata f. sp. avenae isolates considering their pattern of virulence or avirulence, (iii) the race code for each isolate by the North American system of nomenclature, and (iv) the supplemental Pc genes potentially useful as local differentials for P. coronata f. sp. avenae races. The results indicate that the southern Brazilian rust isolates presented a high level of virulence, because 66% of inoculations manifested the high infection type. Only the Pc 68 gene was effective against all tested isolates. In general, each isolate presented a different pattern of virulence or avirulence, which indicates the high variability for virulence that the fungus presents at the sampled sites. However, the North American system of nomenclature was not completely sufficient in distinguishing southern Brazilian races. Thus, the genes Pc 36, Pc 53, Pc 55, and Pc 63 represent a possible gene combination to be incorporated into the North American system of nomenclature.

Peasants, Prophets, and the Power of a Millenarian Vision in Twentieth-Century Brazil

1990 ◽  
Vol 32 (3) ◽  
pp. 488-514 ◽  
Author(s):  
Todd A. Diacon
Keyword(s):  
Twentieth Century ◽  
North American ◽  
Rio Grande ◽  
Sao Paulo ◽  
The State ◽  
Rio Grande Do Sul ◽  
Santa Catarina ◽  
Railroad Workers ◽  
Railway Company ◽  
The North

Flood lights illuminated the southern Brazilian night as thousands of railroad workers struggled to meet their daily trace construction quotas. Brazil Railway Company foremen shouted their orders so as to be heard above the din of massive steam-powered earth movers. These machines, a novelty for the region in 1910, were the North American-owned company's newest ally in its push to meet the rapidly approaching construction deadline. On December 17, 1910, a gayly decorated train crossed the Santa Catarina-Rio Grande do Sul border, thereby inaugurating Brazil's newest railroad line. The company had succeeded in connecting the agricultural south with Brazil's rising industrial star, the state of São Paulo.

scholarly journals Geographic Distribution of Ryegrass Resistent to the Clethodim Herbicide in Rio Grande do Sul1

2016 ◽  
Vol 34 (2) ◽  
pp. 365-376
Author(s):  
L. VARGAS ◽  
T. SCHNEIDER ◽  
D. AGOSTINETTO ◽  
M.A. BIANCHI
Keyword(s):  
Geographic Distribution ◽  
Annual Cycle ◽  
Rio Grande ◽  
Rio Grande Do Sul ◽  
Action Mechanism ◽  
The North ◽  
Winter Crops ◽  
Glyphosate Herbicide ◽  
Continuous Use ◽  
Selection Of

ABSTRACT Ryegrass is a weed of annual cycle that is present in winter crops, in orchards and vineyards of the South region of Brazil. The species is normally controlled by the glyphosate herbicide, but the continuous use of this product caused the selection of resistant biotypes. The use of ACCase inhibitor herbicides is the main alternative for the control of this species, but it has not been satisfactory in some places, thus causing suspicion of resistance to this action mechanism. Thus, the objective of this paper was to evaluate the occurrence and geographic distribution of ryegrass biotypes that are resistant to the clethodim herbicide in the state of Rio Grande do Sul. For that, seeds of ryegrass plants that survived the application of clethodim were collected in crops from the north region of RS, summing up to a total of 152 samples from 72 cities. The biotypes were submitted to the application of 120 g i.a. ha-1 (maximum registered dose) and 60 g i.a. ha-1 de clethodim (half the maximum registered dose). According to the results, among the samples of ryegrass seeds collected, there were no biotypes resistant to the clethodim herbicide when the maximum registered dose was applied and in the stage of three to four leaves. However, there were biotypes with lower susceptibility that survived half the maximum registered dose.

scholarly journals Endovascular Neurosurgery in the Northern Macro- region of Rio Grande do Sul: Part I

2016 ◽  
Vol 37 (03) ◽  
pp. 167-173
Author(s):  
José Vanzin ◽  
Nério Azambuja Jr ◽  
Leonardo Frighetto ◽  
Alan Frohlich ◽  
Daniel Varela ◽  
...  
Keyword(s):  
Neurological Deficit ◽  
Arteriovenous Malformations ◽  
Intracranial Aneurysms ◽  
Rio Grande ◽  
Interventional Neuroradiology ◽  
Diagnostic Procedures ◽  
Neurological Complications ◽  
Safe Procedure ◽  
Rio Grande Do Sul ◽  
The North

Introduction The city of Passo Fundo, in the north of the Rio Grande do Sul state, has been standing out in the health care field for many years. The state has become a reference in endovascular interventional neuroradiology. We will cover 10 years of experience in this area and divide our observations in 3 parts: cerebral angiograms (part I), carotid angioplasties (part II) and intracranial aneurysms (part III). The goal of part I is to statistically assess the cerebral angiograms, their indications, risks and complications, as well as to do a technical review. Materials and Methods A retrospective study from 2005 to 2015 with a total of 5,567 interventional neuroradiology procedures performed. A total of 4,114 angiograms, 639 embolizations of intracranial aneurysms, 414 carotid angioplasties, 143 embolizations of cerebral arteriovenous malformations, 32 embolizations of dural arteriovenous fistulas, 102 cerebral vasospasm treatments, 21 treatments of epistaxis, 36 embolizations of craniocervical tumor, 25 thrombolysis of ischemic stroke, 18 vertebroplasties and 13 embolizations of arteriovenous malformations of the face. Results A total of 4,084 procedures performed, 21,811 vessels studied, average vase 7.62/2.82 vessel and patient/procedure. Of these, 2,536 were diagnostic procedures and 1,548 angiographic controls. Of the total, 1,188 patients received only an angiogram, 27.14% of which were therapeutic procedures. We obtained a total of 3.89% complications: 2.33% reflection vasovagal, 0.56% allergic skin reaction, anaphylactic shock 0.07%, 0.27% femoral hematoma, 0.26% transient neurological deficit, 0.12% permanent neurological deficit and no case of death. Conclusion Cerebral angiography in adults, children and infants is a safe procedure with low risk of permanent neurological complications.

scholarly journals Reptilia, Squamata, Leiosauridae, Urostrophus vautieri Duméril and Bribon, 1837: distribution extension, new state record, and geographic distribution map

Check List ◽  
2010 ◽  
Vol 6 (3) ◽  
pp. 432
Author(s):  
João Luiz Gasparini ◽  
Diogo Andrade Koski ◽  
Pedro L.V. Peloso
Keyword(s):  
Geographic Distribution ◽  
Rio De Janeiro ◽  
Rio Grande ◽  
First Record ◽  
Minas Gerais ◽  
The State ◽  
Rio Grande Do Sul ◽  
Distribution Map ◽  
Santa Catarina ◽  
The North

We present the first record of Urostrophus vautieri for the state of Espírito Santo and a distribution map for the species. This species was previoulsy known from the states of Minas Gerais, Rio de Janeiro, São Paulo, Paraná, Santa Catarina, and Rio Grande do Sul. The present record represent an extension of nearly 200 km to the North from the nearest published record for the species.

scholarly journals Crayfish plague affects juvenile survival and adult behaviour of invasive signal crayfish

Parasitology ◽  
2020 ◽  
Vol 147 (6) ◽  
pp. 706-714 ◽  
Author(s):  
John Rhidian Thomas ◽  
Chloe V. Robinson ◽  
Agata Mrugała ◽  
Amy R. Ellison ◽  
Emily Matthews ◽  
...  
Keyword(s):  
North American ◽  
Native Species ◽  
North American Species ◽  
Juvenile Survival ◽  
Signal Crayfish ◽  
Aphanomyces Astaci ◽  
The North ◽  
High Infection ◽  
Oomycete Pathogen ◽  
The Impact

AbstractThe spread of invasive, non-native species is a key threat to biodiversity. Parasites can play a significant role by influencing their invasive host's survival or behaviour, which can subsequently alter invasion dynamics. The North American signal crayfish (Pacifastacus leniusculus) is a known carrier of Aphanomyces astaci, an oomycete pathogen that is the causative agent of crayfish plague and fatal to European crayfish species, whereas North American species are considered to be largely resistant. There is some evidence, however, that North American species, can also succumb to crayfish plague, though how A. astaci affects such ‘reservoir hosts’ is rarely considered. Here, we tested the impact of A. astaci infection on signal crayfish, by assessing juvenile survival and adult behaviour following exposure to A. astaci zoospores. Juvenile signal crayfish suffered high mortality 4-weeks post-hatching, but not as older juveniles. Furthermore, adult signal crayfish with high-infection levels displayed altered behaviours, being less likely to leave the water, explore terrestrial areas and exhibit escape responses. Overall, we reveal that A. astaci infection affects signal crayfish to a much greater extent than previously considered, which may not only have direct consequences for invasions, but could substantially affect commercially harvested signal crayfish stocks worldwide.

scholarly journals North American nurse educators in the HOPE Earth Project and Nursing teaching

2018 ◽  
Vol 71 (suppl 4) ◽  
pp. 1685-1691
Author(s):  
Djailson José Delgado Carlos ◽  
Maria Itayra Coelho de Souza Padilha ◽  
Maria Angélica de Almeida Peres ◽  
Maria Lígia dos Reis Bellaguarda ◽  
Stéfany Nayara Petry Dal Vesco
Keyword(s):  
Oral History ◽  
North American ◽  
Nurse Educators ◽  
Rio Grande ◽  
The North ◽  
Semistructured Interviews ◽  
State Capital ◽  
American Nurse ◽  
Fully Functioning ◽  
Nursing Course

ABSTRACT Objective: analyze the activities of the North American nurse educators of the Project Health Opportunity for People Everywhere Earth (HOPE Earth Project) in Natal, state capital of Rio Grande do Norte, Brazil (1974-1981). Method: sociohistorical, qualitative study, resulting from filed documents and ten semistructured interviews. These sources were processed and analyzed using Oral History and Thematic Analysis. Results: the following categories emerged: The North American nurse educators of the HOPE Earth Project and Educator Mary Anne Small through the memories of who had contact with her. Final considerations: the HOPE Earth Project contributed to higher education in health at the Federal University of Rio Grande do Norte, guaranteeing the coming of qualified and experienced lecturers, and the North American educators cooperated towards the qualification of the Nursing Course, even when it was already structured and fully functioning.

scholarly journals Ground-dwelling ant fauna of sites with high levels of copper

2004 ◽  
Vol 64 (1) ◽  
pp. 33-39 ◽  
Author(s):  
E. Diehl ◽  
C. E. D. Sanhudo ◽  
Ed. Diehl-Fleig
Keyword(s):  
Heavy Metals ◽  
Environmental Factors ◽  
Conservation Status ◽  
Plant Cover ◽  
Rio Grande ◽  
Control Site ◽  
Environmental Conservation ◽  
Rio Grande Do Sul ◽  
High Level

Richness and diversity of ant species are related to environmental factors such as vegetation, soil, presence of heavy metals, and insecticides, which allow the use of the assemblage members as terrestrial indicators of environmental conservation status. This study presents the results of ground ants surveyed in Minas do Camaquã in the municipality of Caçapava do Sul (Camaquã Basin), State of Rio Grande do Sul. Collections were performed in four sites, with high levels of copper in the soil, three of which - a mine, a liquid reject, and a solid reject -, had sparse or no plant cover, and one site where Pinus has been used for rehabilitation. Parque das Guaritas was the control site, since it presented normal levels of copper and a dense savanna cover. For each site, three transect lines extending 100 m were draw, and at each 10 m sardine baits were distributed; after two hours the ants present were collected. Hand collections in all five sites were performed during one hour (capture effort). A total of 51 species belonging to 17 genera were collected. The control site was the richest in ant species (r = 45). Sites with high level of copper and poor plant cover presented the lowest richness: mine (r = 14), solid reject (r = 15), and liquid reject (r = 16). In contrast, the site planted with Pinus presented an increment in richness (r = 24) of ground-dwelling ants, suggesting a reahabilitation process.

scholarly journals Artisanal fisherfolk’s Local Ecological Knowledge on catfish and fishing legislations: a necessary dialog

2020 ◽  
Vol 23 ◽  
Author(s):  
Sammer Maravilha Chagas Gilio-Dias ◽  
Rodrigo Machado ◽  
Tatiana Mota Miranda ◽  
Rumi Regina Kubo
Keyword(s):  
Local Ecological Knowledge ◽  
Rio Grande ◽  
Participatory Management ◽  
North Coast ◽  
Ecological Knowledge ◽  
Rio Grande Do Sul ◽  
Structured Interviews ◽  
The North ◽  
Establishment Process ◽  
Fishing Regulations

Abstract The presence of catfish of the Ariidae family in the list of endangered species of Rio Grande do Sul (RS), as from 2014, led to forbidding fishing two species of this family. Thus, artisanal fisherfolk lost a significant part of their income, causing conflicts between them and the fishing authorities in RS. This work aims mainly to understand the Local Ecological Knowledge (LEK) of the artisanal fisherfolk of the North Coast of RS regarding the ecology and taxonomy of catfish of the Ariidae family, seeking to relate it to the establishment of the fishing regulations in force in the State. 33 semi-structured interviews were made with artisanal fisherfolk. The interviewees perceive differences among the region ethnospecies; hardly ever are they consulted during the fishing regulations establishment process. Considering the aforementioned aspects, the artisanal fisherfolk LEK on catfish can be an important tool in the participatory management of catfish fishing.

scholarly journals Mammalia, Rodentia, Cricetidae, Calomys laucha (Fischer, 1814): distribution extension in southern Brazil

Check List ◽  
2012 ◽  
Vol 8 (2) ◽  
pp. 264 ◽  
Author(s):  
Caroline Badzinski ◽  
Daniel Galiano ◽  
Jorge R. Marinho
Keyword(s):  
Geographic Distribution ◽  
New Record ◽  
Rio Grande ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
The North ◽  
Central Depression ◽  
Calomys Laucha

The geographic distribution of Calomys laucha in Brazil, known only from the southern portion of Rio Grande do Sul state, up to the state’s Central Depression region, is extended approximately 350 km to the north with a new record at Faxinalzinho municipality, post Depression region in Rio Grande do Sul state. The species seems to be associated with dense shrubby vegetation in this area.

Sign in / Sign up

Export Citation Format

Share Document