Cryptosporidium spp. in Columba livia Gmelin, 1789 (Columbiformes: Columbidae) free-living pigeons from urban areas in Pelotas, Rio Grande do Sul, Brazil

Faunistic inventories regarding natural history of amphibians and reptiles are considered scarce and very little is known about their assemblages in urban areas; the Pampas morphoclimatic domain, also known as Uruguayan Savannah or Southern Grasslands, is also poorly known regarding their faunal composition. Herein, we present a checklist of 16 amphibian and 20 reptile species recorded over a course of four years in the Instituto Federal de Educação, Ciências e Tecnologia, Câmpus Pelotas-Visconde da Graça, in Pelotas, Rio Grande do Sul, Brazil. We also present data on natural history and discuss conservation efforts to be undertaken in the area, in one of the least preserved and known Brazilian morphoclimatic domains, providing insights into urban herpetofaunal diversity patterns and showing the importance of modified areas in its conservation.

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Growth curve of Atlantoscia floridana (van Name) (Crustacea, Isopoda, Philosciidae) from a Brazilian Restinga Forest

Revista Brasileira de Zoologia ◽

10.1590/s0101-81752004000100001 ◽

2004 ◽

Vol 21 (1) ◽

pp. 1-8 ◽

Cited By ~ 12

Author(s):

Paula Beatriz Araujo ◽

Georgina Bond-Buckup

Keyword(s):

Growth Rate ◽

Growth Curve ◽

Urban Areas ◽

Field Data ◽

Growth Curves ◽

Rio Grande ◽

Rio Grande Do Sul ◽

Differential Growth ◽

Estimate Life Expectancy ◽

Males And Females

The terrestrial isopod Atlantoscia floridana (van Name, 1940) occurs from the U.S.A. (Florida) to Brazil and Argentina. In the southernmost Brazilian State, Rio Grande do Sul, the species is recorded in many localities, in urban and in non-urban areas. The growth curve of Atlantoscia floridana based on field data is presented. The specimens were sampled from April, 2000 to October, 2001 at the Reserva Biológica do Lami (RBL), Rio Grande do Sul. Captured individuals were sexed and had their cephalothorax width measured, with the data analyzed with von Bertalanffy's model. The growth curves for males and females are described, respectively, by the equations: Wt = 1.303 [1 - e-0.00941 (t + 50.37)] and Wt = 1.682 [1 - e-0.00575 (t + 59.13)]. The curves showed differential growth between sexes, where females reach a higher Wµ with a slower growth rate. Based on the growth curves it was also possible to estimate life expectancy for males and females.

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Rhipicephalus sanguineus sensu lato(Ixodidae) in synantropic rodents in Rio Grande do Sul, Brazil

Revista Brasileira de Parasitologia Veterinária ◽

10.1590/s1984-29612014027 ◽

2014 ◽

Vol 23 (2) ◽

pp. 276-279 ◽

Cited By ~ 2

Author(s):

Kathleen Tavares Winkel ◽

Paulo Bretanha Ribeiro ◽

Lidiane Oliveira Antunes ◽

Marcial Corrêa Cárcamo ◽

Élvia Elena Silveira Vianna

Keyword(s):

Urban Areas ◽

Tick Species ◽

Rattus Rattus ◽

Rio Grande ◽

Rhipicephalus Sanguineus ◽

First Record ◽

Human Beings ◽

Rio Grande Do Sul ◽

Port Area ◽

Rhipicephalus Sanguineus Sensu Lato

Rhipicephalus sanguineus, the brown dog tick, is responsible for maintaining and transmitting various pathogens, both in animals and human beings, and it is of great sanitary importance. This communication reports the first occurrence of Rhipicephalus sanguineus sensu lato parasitizing Rattus norvegicus in the state of Rio Grande do Sul, Brazil, and it is also the first record of this tick species parasitizing Rattus rattus in Brazil. The rodents were captured from the port area, located in the city of Pelotas, Rio Grande do Sul, Brazil. We collected 6 larvae of this tick species from 2 male R. rattus individuals, and 3 larvae from 2 female R. norvegicus individuals; parasitized specimens of both rodent species were captured from different sites within the experimental area. This record broadens the number of Rhipicephalus sanguineus sensu lato hosts in urban areas, indicating the need for continued monitoring on population density for both R. sanguineus and synanthropic rodents.

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CHEMICAL CHARACTERIZATION OF ATMOSPHERIC PARTICLES IN URBAN AREAS OF RIO GRANDE DO SUL, BRAZIL-PRELIMINARY STUDY

Southern Brazilian Journal of Chemistry - Southern Brazilian Journal of Chemistry, Volume 28, No. 28, 2020 ◽

10.48141/sbjchem.v14.n14.2006.3_2006.pdf ◽

2006 ◽

Vol 14 (14) ◽

pp. 1-16

Author(s):

E. Teixeira ◽

J. Fachel Braga ◽

J.D. D. Migliavacca ◽

M.L.L.Fomoso Sanchez

Keyword(s):

Chemical Composition ◽

Urban Areas ◽

Chemical Characterization ◽

Rio Grande ◽

Atmospheric Particles ◽

Rio Grande Do Sul ◽

Power Stations ◽

Cluster Data ◽

Steel Industries

This work reports the determination of the concentration and chemical composition of atmospheric particles in the urban districts of Charqueadas and Sapucaia do Sul, State of Rio Grande do Sul, Brazil. Chemical composition, morphology, and particle size were analyzed using a scanning electron microscope with energy dispersive x=ray microanalysis (SEM-EDS). Cluster analysis showed that there were six types of particles: Fe-Zn, Fe, Si=Al, Si, Ca-S, and Na. Factorial analysis from cluster data showed that particles rich in Fe-Zn, Si-Al, and Ca-S appeared more frequently, indicating anthropogenic influence (vehicles, steel plants, coal-fired power stations). The experimental results and consideration of the wind directions show that the main source of pollution in Charqueadas appears to be due to coal mining and steel industries, while in Sapucaia do Sul due to steel plants and vehicles.

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Bovine rabies in Rio Grande do Sul: positivity rates, geographical distribution, and seasonal occurrence

Acta Veterinaria Brasilica ◽

10.21708/avb.2021.15.4.10072 ◽

2021 ◽

Vol 15 (4) ◽

pp. 267-274

Author(s):

Bruno Egídio Cappelari ◽

Jéssica Grace da Silveira ◽

Julio César de Almeida Rosa ◽

José Carlos Ferreira ◽

Giovana Dantas

Keyword(s):

Retrospective Study ◽

Geographical Distribution ◽

Urban Areas ◽

Viral Encephalitis ◽

Rio Grande ◽

Laboratory Diagnosis ◽

Seasonal Occurrence ◽

Human Rabies ◽

Rio Grande Do Sul ◽

The Impact

Rabies is a zoonotic disease characterized by acute viral encephalitis. It is almost 100% fatal for infected animals. While cases of human rabies have still been registered in Brazil, in the state of Rio Grande do Sul rabies is considered a controlled disease in urban areas. However, the transmission of bovine rabies – which has been largely associated with the Desmodus rotundus bat – is endemic. Additionally, there are estimates that only 10% of rabies cases are reported. Therefore, this study aimed to describe the positivity rates, geographical distribution, and seasonal occurrence of bovine rabies in RS, as well as the sampling practices in rabies surveillance. Using samples submitted for laboratory diagnosis from 2016 to 2019, we conducted a retrospective study of the sample results, positivity rates, and seasonal occurrence of rabies in cattle. Throughout these four years, less than a third of state municipalities sent samples for diagnosis, suggesting that the occurrence of rabies might still be underestimated in non-sampled areas. A higher number of rabies cases were reported in 2019, a year in which the most diagnosed samples and the highest positivity percentages were recorded. However, the case numbers registered between 2016 and 2019 were not significantly different. We found that the summer and autumn months presented statistically different positivity rates. Besides this, we did not find any positive D. rotundus samples, despite the positivity rates for bovine rabies. Active surveillance, especially of bat populations and under-sampled regions, must be strengthened to correctly estimate the impact of rabies.

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Assembleia de aves na área urbana do município de Pelotas, Rio Grande do Sul, Brasil

Biota Neotropica ◽

10.1590/s1676-06032013000200014 ◽

2013 ◽

Vol 13 (2) ◽

pp. 153-162 ◽

Cited By ~ 5

Author(s):

Anne Gomes Sacco ◽

Fabiane Borba Bergmann ◽

Ana Maria Rui

Keyword(s):

Passer Domesticus ◽

Rio Grande ◽

Columba Livia ◽

Rio Grande Do Sul ◽

Myiopsitta Monachus

A urbanização altera a composição e diversidade das comunidades bióticas. Os objetivos do trabalho são apresentar a lista de espécies de aves que utilizam a área urbana do município de Pelotas (RS), no extremo sul do Brasil, e descrever a estrutura da assembleia com ênfase na riqueza, composição e abundância relativa de espécies e suas variações sazonais. A coleta de dados ocorreu entre outubro de 2007 e setembro de 2008, em 216 pontos fixos de observação distribuídos em grupos de seis pontos em ruas com todos os graus de urbanização, que foram amostrados uma vez por estação. O observador permaneceu oito minutos em cada um dos pontos, o que resultou no esforço amostral de 28,8 horas em cada estação e 115,2 horas no ano. Foram registrados 9.595 contatos de 84 espécies de aves pertencentes a 34 famílias e 14 ordens. Quanto à abundância relativa, 72 espécies apresentaram menos de 200 contatos; sete apresentaram entre 200 e 1000; e quatro apresentaram mais de 1000 contatos. As espécies com mais de 1000 contatos foram Furnarius rufus, Columba livia, Myiopsitta monachus e Pitangus sulphuratus, totalizando 5136 contatos. Das 84 espécies, 67 estiveram presentes em menos do que 20% dos pontos amostrados; sete foram registradas entre 20 e 40% e entre 40 e 60% dos pontos; e três foram visualizadas entre 80 e 100% dos pontos. As espécies com maior frequência de ocorrência foram P. sulphuratus, Passer domesticus e F. rufus. A riqueza variou de 55 espécies, no outono, até 61, no inverno. Das 84 espécies, 21 estiveram presentes em uma estação, 17 em duas, nove em três e 37 estiveram presentes em todas as estações. A estação em que se obteve maior abundância relativa foi a primavera, com 2936 contatos, e a menor foi o outono, com 2149 contatos. A assembleia de aves apresentou riqueza representativa se comparada com a região, porém, poucas espécies são abundantes e bem distribuídas. Esse padrão pode ser reflexo da baixa qualidade e heterogeneidade da matriz urbana, que possui poucas praças e parques, não possui áreas de reserva de vegetação nativa e lagos e possui baixo grau de arborização.

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Palaeoenvironmental dynamics of Holocene shoreface bryoliths from the southern coast of Brazil

The Holocene ◽

10.1177/0959683618824739 ◽

2019 ◽

Vol 29 (4) ◽

pp. 662-675 ◽

Cited By ~ 2

Author(s):

Frederico Tapajós de Souza Tâmega ◽

Paula Spotorno-Oliveira ◽

Paula Dentzien-Dias ◽

Francisco Sekiguchi Buchmann ◽

Leandro Manzoni Vieira ◽

...

Keyword(s):

Human Disturbance ◽

Rio Grande ◽

Coralline Algae ◽

Southern Coast ◽

Rio Grande Do Sul ◽

Benthic Habitats ◽

Free Living ◽

Storm Waves ◽

Water Carbonate ◽

Shallow Water Carbonate

Beds of free-living coated nodules (coralline algae, bryozoans, acervulinid foraminifera) create shallow-water carbonate biogenic benthic habitats, which are sensitive to human disturbance and slow to recover. Holocene bryoliths, ranging from sub-spheroidal, sub-discoidal to sub-ellipsoidal in shape, were found scattered in the foredunes in ca. 30-km stretch along the Hermenegildo and Concheiros do Albardão beaches on the southernmost coast of Brazil (Santa Vitória do Palmar municipality, Rio Grande do Sul State). The dominating bryozoan species forming the bryolith is Biflustra holocenica Vieira, Spotorno-Oliveira and Tâmega sp. nov. The inner bryolith arrangement, generally asymmetrical, shows multilamellar and circumrotatory growth of colonies that envelop the bivalve Ostrea puelchana. Bryozoans and subordinate corals characterize the outer bryolith surfaces. The ichnogenera Gastrochaenolites (made by the boring bivalve Lithophaga patagonica) and Caulostrepsis occur throughout the bryoliths, from the inner part up to the outer surface. The studied bryoliths, originated in a shoreface setting at ca. 7910–7620 cal. yr BP and during subsequent storm waves, were resedimented onto the foreshore and foredunes (to ca. 5700 cal. yr BP) where the bryoliths were finally fossilized.

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Caracterização molecular de Cryptosporidium spp. em criações comerciais brasileiras de coelhos

Arquivo Brasileiro de Medicina Veterinária e Zootecnia ◽

10.1590/1678-4162-8836 ◽

2016 ◽

Vol 68 (4) ◽

pp. 977-982

Author(s):

M.M. Heker ◽

A.A. Nakamura ◽

M.V. Meireles

Keyword(s):

Nested Pcr ◽

Rio De Janeiro ◽

18S Rrna ◽

Rio Grande ◽

Minas Gerais ◽

Sao Paulo ◽

Rio Grande Do Sul ◽

Mato Grosso ◽

Cryptosporidium Spp ◽

Mato Grosso Do Sul

RESUMO A criptosporidiose é uma importante zoonose que pode ser transmitida por meio de alimentos, água de bebida e por contato com animais e pessoas infectadas. Além disso, trata-se de uma enfermidade clínica ou subclínica frequente em diversas espécies de animais, incluindo coelhos domésticos. O objetivo deste estudo foi determinar a ocorrência de Cryptosporidium spp., realizar sua classificação molecular e relacionar a presença do parasito às diferentes fases de criação em 21 criações comerciais de coelhos, localizadas nos estados de Minas Gerais, Mato Grosso do Sul, Pernambuco, Paraná, Rio de Janeiro, Rio Grande do Sul e São Paulo. Quinhentas e catorze amostras de fezes foram colhidas e armazenadas em solução de dicromato de potássio 5%. Os oocistos foram purificados por centrífugo-flutuação em solução de Sheather e visualizados por microscopia, utilizando-se a coloração negativa com verde malaquita. Cinquenta e cinco amostras foram submetidas à reação em cadeia pela polimerase (nested PCR) e ao sequenciamento de fragmentos amplificados, referentes aos genes da subunidade 18S do rRNA e da glicloproteína GP60, visando à caracterização molecular de Cryptosporidium spp. Oito amostras foram positivas para Cryptosporidium spp. pela microscopia (1,56%; 8/514) e sete foram positivas pela nested PCR (12,73%; 7/55). Pela análise molecular, foi possível identificar Cryptosporidium cuniculus (18S rRNA) e C. cuniculus subtipo VbA21 (gp60) em coelhos jovens e em matrizes.

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Analysis of extreme wave events in the southern coast of Brazil

Natural Hazards and Earth System Sciences Discussions ◽

10.5194/nhessd-2-4363-2014 ◽

2014 ◽

Vol 2 (6) ◽

pp. 4363-4391 ◽

Cited By ~ 4

Author(s):

P. V. Guimarães ◽

L. Farina ◽

E. Toldo

Keyword(s):

Urban Areas ◽

Rio Grande ◽

Rio Grande Do Sul ◽

Extreme Wave ◽

Point Of Interest ◽

Wave Heights ◽

Significant Wave Heights ◽

Buoy Data ◽

The Waves ◽

Good Agreement

Abstract. Using the model SWAN, high waves on the Southwestern Atlantic generated by extra-tropical cyclones are simulated from 2000 to 2010 and their impact on the Rio Grande do Sul coast is studied. The modeled waves are compared with buoy data and good agreement is found. The six extreme events in the period which presented significant wave heights above 5 m, on a particular point of interest, are investigated in detail. It is found that the cyclogenetic pattern between the latitudes 31.5 and 34° S, is the most favorable for developing high waves. Hovmöller diagrams for deep water show that the region between the south of Rio Grande do Sul up to latitude 31.5° S is the most energetic during a cyclone's passage, although the event of May 2008 indicate that the location of this region can vary, depending on the cyclone's displacement. On the oher hand, the Hovmöller diagrams for shallow water show that the different shoreface morphologies were responsable for focusing or dissipating the waves' energy; the regions found are in agreement with the observations of erosion and progradation regions. It can be concluded that some of the urban areas of the beaches of Hermenegildo, Cidreira, Pinhal, Tramandaí, Imbé and Torres have been more exposed during the extreme wave events at Rio Grande do Sul coast, and are more vulnerable to this natural hazard.

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