scholarly journals Influência das cultivares de videiras (Vitis vinifera L.) e do sistema de condução sobre a acarofauna

2021 ◽  
Vol 3 ◽  
pp. ec03023
Author(s):  
Rita T. L. Da Silva ◽  
Amália L. W. Berté ◽  
Gabriel L. Bizarro ◽  
Angelica Sulzbach ◽  
Vinicius L. Da Silva ◽  
...  

The South of Brazil is the largest producer of grapes, however this production is affected by climate and herbivores such as phytophagous mites. The aim of this work was to associate the mite fauna with the grape cultivars Chardonnay, BRS Lorena and hybrid cultivars rootstock Paulsen 1103, in trellising and espalier systems, in the municipalities of Bento Gonçalves and Garibaldi, Rio Grande do Sul State, Brazil. The cultivars were: Chardonnay trellis (Cl) Chardonnay espalier (Ce), BRS Lorena trellis (Ll), BRS Lorena espalier (Le) and the hybrid cultivars Paulsen rootstock 1103 (Pa). Monthly samplings were carried out from November 2016 to April 2017. Twenty plants per area were randomly sampled, from each plant three apical leaves were collected, apical, median and basal branches (60 leaves / area). In total, 6,865 mites belonging to seven families, 13 genera and 22 species were collected. The most abundant phytophagous belong to Tarsonemidae and Tenuipalpidae, the predators to Phytoseiidae and the generalists to Tydeidae and Iolinidae. The cultivars Lorena Ll was the greatest similarity (82.39%) among species mites, followed by Paulsen Pa (72.54%), Lorena Le (70.67%), Chardonnay Cl (31.79%) and Chardonnay Ce (31.48%). The highest dissimilarity among the cultivars occurred between Chardonnay Ce and Lorena Le (66.49%), followed by Chardonnay Ce, Chardonnay Cl (66.44%), Chardonnay Ce and Lorena Ll (61.49 %). Thus, there is homogeneity between the sampled cultivars and the conduction systems and the apical third of the leaves and the sampling period are important in determining the composition of the species.

Check List ◽  
2011 ◽  
Vol 7 (4) ◽  
pp. 522 ◽  
Author(s):  
Crisna Letícia Klock ◽  
Marcos Botton ◽  
Noeli Juarez Ferla

The mitefauna associated to Merlot and Chardonnay grapevine cultivars and associated plants in the municipalities of Bento Gonçalves and Candiota, Rio Grande do Sul was investigated. The study was developed between October 2006 and September 2007, where 20 grapevine plants were randomly chosen from each municipality and monthly sampled. Three leaves of each plant were taken. A total of 11,598 mites belonging to 14 families and to 52 species were found. Fifty-nine percent of the total specimens were collected in Candiota, being 93% associated to the Merlot cultivar. Higher species richness was observed on associated plants. Phytoseiidae showed the highest species richness, with ten species, and Eriophyidae showed the highest abundance, with 8,675 specimens. Calepitrimerus vitis (Nalepa, 1905) and Polyphagotarsonemus latus (Banks, 1904) were the most common phytophagous mites, while Neoseiulus californicus (McGregor, 1954) and Pronematus anconai (Baker ,1943) were the most common predators.


Author(s):  
Julia Somavilla Lignon ◽  
Emanuelle de Souza Farias ◽  
Felipe Arley Costa Pessoa ◽  
Eduarda Maria Trentin Santi ◽  
Lucas Alexandre Farias de Souza ◽  
...  

2021 ◽  
Vol 14 (3) ◽  
pp. 1268
Author(s):  
Maicon Moraes Santiago ◽  
Gabriel Borges dos Santos ◽  
Iulli Pitone Cardoso ◽  
André Becker Nunes

Particles of soot from forest fires are transported by the wind, reaching distant locations and being deposited on the soil through precipitation, which clears the atmosphere, taking suspended particulate matter into its drops. The general circulation over South America indicates the possibility of soot from forest fires in the Amazon and Pantanal to be transported to southern Brazil. The event called “black rain” was observed in the period from 11 to 13 September 2020 at São Francisco de Assis City, in Rio Grande do Sul State (RS), and so this work aims to analyze if there were any anomalies of the flow that favored the occurrence of this event, given that there was a large number of fires in this period. Through ERA5 reanalysis data and GOES-16 satellite images, it was observed that on the three days under study low-level flow to the south of Brazil was more intense than normal, with the Low Level Jet occurrences, and on days 12 and 13 such flow to the south was also observed at 500 hPa. The precipitation was due to the instability of an extended trough from the Northwestern Argentinean Low. Thus, it is believed that there was a contribution from circulation at low and mid levels in the occurrence of black rain over RS.


2011 ◽  
Vol 19 ◽  
pp. 14
Author(s):  
Denise Regina Quaresma da Silva ◽  
Oscar Ulloa Guerra

This article approaches a characterization of the practices of sexual education in educative institutions in Novo Hamburgo, Rio Grande do Sul, Brazil, where the precocious gestations have a significative extension. We rescued some theoretical contributions to understand the sexual education, specifically from the pos-structuralism, and from current researches about this topic. Besides, we show qualitative results from the interviews with directives and teachers of the fifty six schools of the municipality.


Check List ◽  
2012 ◽  
Vol 8 (2) ◽  
pp. 187 ◽  
Author(s):  
Sabrina Amaral Pereira ◽  
Cláudio Rossano Trindade Trindade ◽  
Edélti Faria Albertoni ◽  
Cleber Palma-Silva

The aim of this study was to document the richness of aquatic macrophytes in six shallow lakes at Federal University of Rio Grande - FURG, Rio Grande, Rio Grande do Sul, Brazil. Qualitative surveys were carried out during 2008. Specimens were deposited at the university herbarium (HURG). We recorded 44 species belonging to 35 genera and 21 families. The majority of species were present all year. The family with highest diversity was Cyperaceae (eight species). Other studies have reported approximately 170 species for wetlands in the south of Brazil. This study documented approximately 25% of these species. The flora of the area should be preserved and monitored. 


2020 ◽  
Vol 25 (9) ◽  
pp. 1618-1642
Author(s):  
Rita Tatiane Leão Da Silva ◽  
Vinicius Leão Da Silva ◽  
Darliane Evangelho Silva ◽  
Joseane Moreira Do Nascimento ◽  
Matheus Schüssler ◽  
...  

Viticulture is an activity of economic importance in the state of Rio Grande do Sul, especially in Serra Gaúcha, which is the major grape-producing region. However, an increase in cultivated areas has been observed in other municipalities in the state. The aim of this study is to characterize mite diversity and community behavior on different varieties, recognizing which predatory species have potential to control phytophagous mites associated with Europan varieties in the Taquari Valley, Rio Grande do Sul state. The study was conducted in vineyards located in the municipalities of Marques de Souza: ‘BRS Vitória’ and cv ‘Itália’ “m”; Imigrante: cv ‘Itália’ “i”; Dois Lajeados: cv ‘Itália’ (c and f), ‘Tannat’ and ‘Chardonnay’; and Putinga: ‘Champanhe’ and ‘Moscato’. Samplings were carried out monthly in the period ranging from March 2017 to March 2018, during which twenty plants were randomly collected from each variety. Three leaves were clipped from each plant; one from the apical third, one from the median third, and one from the basal third, totaling 60 leaves per area. A total of 10,533 specimens were collected, belonging to 12 families, 38 genera, and 53 species, along with those belonging to the suborder Oribatida. The ‘Itália’ “c” variety had the highest abundance (2,012), followed by ‘Moscato’ (1,788) and ‘BRS Vitória’ (1,593). Phytoseiidae had the highest diversity among the mite families observed, with 20 species followed by Tetranychidae (8). The most abundant species were Polyphagotarsonemus latus (Banks) (3,420) and Euseius concordis (Chant) (565), present throughout the study period. ‘Chardonnay’ variety had the highest similarity (72.55%) among mite fauna compositions and the highest dissimilarity occurred between ‘BRS Vitória’ and ‘Champanhe’ varieties (95.48%). Environments evaluated in Dois Lajeados and Putinga were the most homogeneous concerning mite fauna diversity and abundance.


2020 ◽  
Vol 12 (1) ◽  
pp. 95-106 ◽  
Author(s):  
Cibele Sastre

This article presents Laban/Bartenieff movement studies (LBMS) experiments through pedagogical procedures and creative processes. It comprises artistic and performative perspectives in choreography and dance education from a nineteen years’ research within master and doctorate studies. Laban’s Motif writing shifts its main function to act as a trigger for creative processes. Besides, somatic serenities, as an important body state for the production of presence, are encouraged in somatic‐performative practices that include LBMS into dance programme courses in Rio Grande do Sul. The concept of somatic serenities is introduced to develop an inner‐outer body connection state as an intimate experience with dance, which produces knowledge. This text considers performative dance practices and practice as research as an LBMS teaching methodology in dance courses in the south of Brazil.


2021 ◽  
Vol 3 ◽  
pp. ec03024
Author(s):  
Gabriel Bizarro ◽  
Guilherme L. Da Silva ◽  
Rita T. L. Silva ◽  
Edward A. Ueckermann ◽  
Noeli J. Ferla ◽  
...  

In this paper, we presented additional information to the description of Cheletomimus (Hemicheyletia) wellsi (Baker, 1949) (Acari: Cheyletidae) collected on Vitis vinifera L. (Vitaceae), Ruellia angustiflora (Ness) Lindau ex Rambo (Acanthaceae) from Dois Lajeados, Marques de Souza and Pantano Grande municipalities in Rio Grande do Sul state, and on Malus domestica Borkh (Rosaceae) in Campo do Tenente municipality, Paraná state, Brazil. The specimens examined presented intraspecific variations from those described previously. These variations will be discussed herein. A key to the known Brazilian species of the genus is provided.


2009 ◽  
Vol 38 (2) ◽  
Author(s):  
Odete Pereira da Silva Menon ◽  
Edson Domingos Fagundes ◽  
Loremi Loregian-Penkal

This study introduces the Project that gave origin to one of the most important databases about oral language in Brazil. The Project on Urban Linguistic Variation in the South of Brazil (VARSUL), that started in 1990, initially comprised the three federal universities of the three States of Southern Brazil: Federal University of Santa Catarina (UFSC), Federal University of Paraná (UFPR) and Federal University of Rio Grande do Sul (UFRGS). In 1993, the Project began to also rely on the Pontific Catholic University of Rio Grande do Sul (PUC–RS). The VARSUL Project aims at storing samples of speech realizations by inhabitants of socio-representative urban areas from each of the three states of the South of Brazil, stratified by location, age range, gender and education.


2012 ◽  
Vol 5 (1) ◽  
pp. 70-74
Author(s):  
Mauricio Paulo Batistella Pasini ◽  
Dionísio Link

This work has the first record of Zaprionus indianus Gupta (Diptera: Drosophilidae) found in the rural area of Agudo in the state of Rio Grande do Sul, Brazil. The adults were first found in plums (Prunus salicina Lindl). Subsequently it was found in mature figs (Ficus carica L.) in two orchards. In the first orchard about 80% of the collected figs were infested by Z. indianus. In the second orchard, 50% of the figs cv. “Pingo de mel” and 80% of the figs of cv. “Roxo de Valinhos” were infested. On these collected figs a total of 1364 adult insects emerged. Figs of cultivar “Roxo de Valinhos” had higher adult emergence number. Besides being present in residues of the figs, Z. indianus was observed flying over debris from Syagrus romanzoffiana (Cham), Cucumis melo L., Citrullus vulgaris Schrad. and Vitis vinifera L., associated with other Drosophilidae. These findings indicate that measures for monitoring and pest control should be adopted in the county to ensure high quality figs. Ocorrência de Zaprionus indianus (Diptera: Drosophilidae) em Agudo, Rio Grande do Sul, Brasil Resumo. Este trabalho faz menção ao primeiro registro de Zaprionus indianus Gupta (Diptera: Drosophilidae) encontrado na zona rural do município de Agudo, no estado do Rio Grande do Sul, Brasil. Os adultos da mosca foram encontrados primeiramente em frutos de ameixa (Prunus salicina Lindl) posteriormente em figos maduros (Ficus carica L.) em dois pomares. No primeiro pomar cerca de 80% dos figos coletados apresentaram ataque de Z. indianus e, no segundo pomar 50% dos figos da cv. “Pingo de mel” e 80% da variedade “Roxo de Valinhos” foram infestados. No período correspondente a emergência dos adultos, coletou-se um total de 1364 indivíduos. Os figos da cv “Roxo de Valinhos” apresentaram maior emergência de adultos. Além de estar presente em restos culturais de figo, Z. indianus foi visualizada sobrevoando restos culturais de Syagrus romanzoffiana (Cham.), Cucumis melo L., Citrullus vulgaris Schrad. e Vitis vinifera L., associada a outros drosofilídeos. Ressalta-se que medidas de monitoramento e controle da praga deverão ser adotadas no município para garantir figos de alta qualidade e sadios.


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