scholarly journals Rhinonyssidae (Acari) in the house sparrows, Passer domesticus (Linnaeus, 1758) (Passeriformes: Passeridae), from southern Brazil

2018 ◽  
Vol 27 (4) ◽  
pp. 597-603 ◽  
Author(s):  
Luciana Siqueira Silveira dos Santos ◽  
Carolina Silveira Mascarenhas ◽  
Paulo Roberto Silveira dos Santos ◽  
Nara Amélia da Rosa Farias
Keyword(s):  
House Sparrow ◽  
Passer Domesticus ◽  
Rio Grande ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
House Sparrows ◽  
Mean Intensity ◽  
Significant Difference ◽  
Infection Parameters ◽  
The City

Abstract We report the occurrence and infection parameters of two species of nasal mites in Passer domesticus (Linnaeus, 1758) (house sparrow). Nasal passages, trachea, lungs, and air sacs of 100 house sparrows captured in an urban area at the city of Pelotas, State of Rio Grande do Sul, southern Brazil, were examined with a stereomicroscope. The mite, Sternostoma tracheacolum Lawrence, 1948 was present in the trachea and/or lungs (or both) of 13 birds (13%) at a mean intensity of 6.7 mites/infected host. Ptilonyssus hirsti (Castro & Pereira, 1947) was found in the nasal cavity of 1 sparrow (1%); coinfection was not observed in this bird. There was no significant difference in the prevalence and mean intensity of infection of S. tracheacolum between male and female birds. To our knowledge, this is the first study reporting the occurrence of S. tracheacolum in P. domesticus in Brazil and the presence of P. hirsti in P. domesticus from Rio Grande do Sul, Brazil. This is the first survey to provide the infection parameters of each of these mites in house sparrows.

scholarly journals Helminths Assemblage of the bare-faced ibis, Phimosus infuscatus (Lichtenstein, 1823) (Pelecaniformes: Threskiornithidae), in southern Brazil

2019 ◽  
Vol 28 (1) ◽  
pp. 40-46
Author(s):  
Simone Scheer ◽  
Carolina Silveira Mascarenhas ◽  
Márcia Raquel Pegoraro de Macedo ◽  
Gertrud Muller
Keyword(s):  
Rio Grande ◽  
Helminth Fauna ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Intensity Of Infection ◽  
Mean Intensity ◽  
Male Bird ◽  
Significant Difference ◽  
First Time ◽  
Prevalent Species

Abstract Birds act as hosts for a variety of parasites, many of these are unreported. The literature provides scant information on the helminth fauna of Phimosus infuscatus. The presence of helminths were investigate in 28 birds from Pelotas, Capão do Leão, and Rio Grande in Rio Grande do Sul. The preparation and identification of helminths followed protocols. Prevalence (P%), mean intensity of infection (MII), and mean abundance (MA) were estimated. The following helminths were found: Hystrichis acanthocephalicus , Dioctophyme renale (larva), Porrocaecum heteropterum , Baruscapillaria sp., Aproctella carinii , Paradeletrocephalus minor, and Cyathostoma sp. (Nematoda); Echinostomatidae gen. sp., Tanaisia valida, and Athesmia sp. (Trematoda: Digenea) and Megalacanthus sp. (Cestoda). The most prevalent species were H. acanthocephalicus, P. heteropterum, Megalacanthus sp., and Echinostomatidae gen. sp. and Megalacanthus sp. had the highest MII and MA. There was a significant difference in the prevalence of H. acantocephalicus between female and male bird hosts. We report Echinostomatidae gen. sp., T. valida, Athesmia sp., Cyathostoma sp., A. carinii, P. minor, D. renale (larva), Baruscapillaria sp., and Megalacanthus sp. for the first time in P. infuscatus in Brazil.

scholarly journals Emphysematous abomasitis in a lamb by bacteria of the Sarcina genus in Southern Brazil

2015 ◽  
Vol 46 (2) ◽  
pp. 300-303 ◽  
Author(s):  
Ronaldo Viana Leite Filho ◽  
Matheus Viezzer Bianchi ◽  
Gabriela Fredo ◽  
Eduardo Conceição de Oliveira ◽  
Cláudio João Mourão Laisse ◽  
...  
Keyword(s):  
Sudden Death ◽  
Microscopic Examination ◽  
Rio Grande ◽  
Rare Condition ◽  
The State ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Diffuse Emphysema ◽  
The City

ABSTRACT: Abomasal bloat associated with Sarcina genus bacteria is a rare condition reported in young ruminants. An outbreak characterized by the sudden death of eight lambs from a total of 80 lambs (30 days-old) occurred on a property located in the city of Palmares do Sul in the state of Rio Grande do Sul. Deaths began to occur after the introduction of supplementation into the diet of lambs. At necropsy, the abomasum was distended by gas and had diffusely thickened walls and emphysema. On microscopic examination, the abomasum showed marked diffuse emphysema and multifocal areas of mild superficial necrosis with many coccoid structures measuring approximately 2µm in diameter, arranged in tetrads, compatible with Sarcina genus bacteria. After removing supplementation from the diet, no more deaths occurred. The diagnosis of this case was established by gross and microscopic lesions in addition to the clinical and epidemiological findings. Therefore, it was concluded that it was an outbreak of emphysematous abomasitis by Sarcina genus bacteria in lambs.

scholarly journals Phthiraptera and Gamasida Parasites of Columbina picui (Temminck) (Columbiformes: Columbidae) in the State of Rio Grande do Sul, Southern Brazil

2012 ◽  
Vol 72 (3) ◽  
pp. 583-585 ◽  
Author(s):  
MAA. Coimbra ◽  
CS. Mascarenhas ◽  
G. Müller ◽  
JGW. Brum
Keyword(s):  
External Surface ◽  
Rio Grande ◽  
The State ◽  
The Body ◽  
The Other ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Mean Intensity ◽  
First Time ◽  
Ornithonyssus Bursa

Thirty-two specimens of Columbina picui (picui ground-dove) were examined, and a collection of arthropods was made by washing the external surface of the body and the nasal cavity. The species in the order Phthiraptera found and their respective prevalences, mean abundance and mean intensity were: Columbicola passerinae (84.4%; 10.3; 12.2), Hohorstiella passerinae (21.9%; 0.7; 3.1) and Physconelloides eurysema (3.1%; 0.1; 2). The gamasid mites found in the birds and their respective prevalences, mean abundance and mean intensity were: Pellonyssus marui (31.3%; 1.2; 3.9), Ornithonyssus bursa (15.6%; 0.2. ;1.2) and Mesonyssus sp. (6.3%; 0.1; 1). Columbicola passerinae, H. passerinae, P. eurysema, O. bursa, P. marui and Mesonyssus sp. were recorded for the first time infecting C. picui in Brazil. Except for O. bursa, the other species are reported for the first time in the state of Rio Grande do Sul, Brazil.

scholarly journals First report of Nematomystes scapteromi (Ganzorig, Oku, Okamoto, Malgor & Kamiya, 1999) Jiménez-Ruiz & Gardner, 2003 (Nematoda, Aspidoderidae) in Scapteromys tumidus Waterhouse, 1837 (Rodentia, Sigmodontinae) from southern Brazil

Check List ◽  
2015 ◽  
Vol 11 (2) ◽  
pp. 1607
Author(s):  
Leandro Ramos Duarte ◽  
Moisés Gallas ◽  
Eliane Fraga da Silveira ◽  
Eduardo Périco
Keyword(s):  
Rio Grande ◽  
The State ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Intensity Of Infection ◽  
Morphometric Traits ◽  
Mean Intensity ◽  
First Report ◽  
The Mean

Prior to the present study, Nematomystes scapteromi (Ganzorig, Oku, Okamoto, Malgor & Kamiya, 1999) Jiménez-Ruiz & Gardner, 2003 had been reported in Scapteromys tumidus Waterhouse, 1837 from Uruguay. Here, eight specimens of S. tumidus were collected in southern Brazil and necropsied. The nematodes encountered were determined as N. scapteromi through their morphometric traits. Prevalence was 87.5% and the mean intensity of infection of 18.3 helminths/host. This is the first report of N. scapteromi parasitizing S. tumidus in the state of Rio Grande do Sul, Brazil.

scholarly journals Mites Macronyssidae Parasites of Passer domesticus (Linnaeus, 1758) (Passeriformes: Passeridae) in the Southern of Brazil

2020 ◽  
Vol 21 (1) ◽  
pp. 1-12
Author(s):  
Luciana Siqueira Silveira dos Santos ◽  
Carolina Silveira Mascarenhas ◽  
Paulo Roberto Silveira dos Santos ◽  
Nara Amélia da Rosa Farias
Keyword(s):  
Body Mass ◽  
Species Abundance ◽  
Passer Domesticus ◽  
The Body ◽  
House Sparrows ◽  
Mean Intensity ◽  
Total Length ◽  
Significant Difference ◽  
Mite Collection ◽  
Parasitic Mites

The aim of this study was to report the species of haematophagous parasitic mites of Passer domesticus (Linnaeus, 1758) and analyze the infestation rates regarding to gender, body mass, and total length of the hosts. To do so, each of the 100 house sparrows captured in the urban area of Pelotas, Rio Grande do Sul, Brazil, was identified by gender, weighed, and measured. The mite collection was carried out after applying an ectoparasite-repelling talc in the body of the birds. Pellonyssus reedi was found in 29 house sparrows with mean intensity of 8.37 mites/host and Ornithonyssus bursa was found in two birds, only one male host showing co-infestation. The prevalence and mean intensity of P. reedi between male and female adults did not show significant difference, nor was there any correlation among species abundance, body mass, and total length of the house sparrows. We report the occurrence of P. reedi and O. bursa parasitizing P. domesticus in the southern of Brazil.

scholarly journals The prevalence of multiple sclerosis in Santa Maria, Rio Grande do Sul, Brazil

2014 ◽  
Vol 72 (2) ◽  
pp. 104-106 ◽  
Author(s):  
Alessandro Finkelsztejn ◽  
Juarez Silva Lopes ◽  
Janaína Noal ◽  
Juliana M. Finkelsztejn
Keyword(s):  
Multiple Sclerosis ◽  
Young Adults ◽  
Rio Grande ◽  
Prevalence Rates ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Health Ministry ◽  
European Heritage ◽  
The City ◽  
Santa Maria

Multiple sclerosis (MS) is one of the leading causes of neurologic deficits in young adults and can lead to physical, intellectual and emotional problems. Approved treatments are expensive and are among the 10 highest budgets of the Brazilian Health Ministry. Given the diverse prevalence of MS among Brazilian regions, it is important to determine prevalence rates across the country. Seven studies have assessed MS in Brazil and reported rates ranging from 15 cases to 18 cases per 100,000 inhabitants. It has been hypothesized that this rate is even higher in southern Brazil, which has a high proportion of European heritage (mostly German and Italian) immigrants. Here, we report that the prevalence of MS in the city of Santa Maria, Rio Grande do Sul, Brazil, is 27.2 cases/100,000 inhabitants.

scholarly journals New locality records for Guerrerostrongylus zetta (Travassos, 1937) Sutton & Durette-Desset, 1991 (Nematoda: Heligmonellidae) parasitizing Oligoryzomys nigripes (Olfers, 1818) (Rodentia: Sigmodontinae) from southern Brazil

Check List ◽  
2016 ◽  
Vol 12 (2) ◽  
pp. 1861 ◽  
Author(s):  
Daniela F. de Werk ◽  
Moisés Gallas ◽  
Eliane F. da Silveira ◽  
Eduardo Périco
Keyword(s):  
Morphological Traits ◽  
Rio Grande ◽  
First Record ◽  
The State ◽  
Southeastern Brazil ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Intensity Of Infection ◽  
Mean Intensity

Guerrerostrongylus zetta had been found in a number of different species of rodents from northern and southeastern Brazil as well as Argentina. Between 2008 and 2010, specimens of Oligoryzomys nigripes (n = 14) were collected and necropsied. The nematodes encountered were identified as G. zetta due their morphological traits. Prevalence was 78%, with a mean intensity of infection of 5.63 helminths/host. This report fills in a lacuna in the known distribution of G. zetta, and provides the first record of this parasite in the state of Rio Grande do Sul, Brazil.

scholarly journals Biomphalaria Tenagophila Guaibensis ssp. n. from Southern Brazil and Uruguay (pulmonata: Planorbidae). I. Morphology

1984 ◽  
Vol 79 (4) ◽  
pp. 465-469 ◽  
Author(s):  
W. Lobato Paraense
Keyword(s):  
Rio Grande ◽  
Middle Part ◽  
The Other ◽  
Genital System ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Porto Alegre ◽  
Coastal Belt ◽  
Significant Difference ◽  
Additional Support

A new subspecies of planorbid snail, biomphalaria tenagophila guaibensis, is described. It has been found along the coastal belt of the Brazilian state of rio grande do Sul and the middle part of Uruguay, from Porto Alegre to Mercedes. It differs from the nominate subspecies, Biomphalaria tenagophila tenagophila, in the appearance of the penial complex (prepuce longer and proportionally slenderer in B. t. guaibensis, shorter and proportionally stouter in b. t. tenagophila), in the ratio between the lengths of the penial sheath and the prepuce, in the ratio between the lengths of the uterine complex and the penial complex, and in a coefficient of difference of 2.44 for the ratio between the penis sheath and prepuce and of 2.02 for the ratio between the uterine complex and penial complex. The shell and the other organs of the genital system are similar in both subspecies. B. t. guaibensis is very similar to Biomphalaria occidentalis Paraense, 1981, but is readily separated from it by the presence of a vaginal pouch, which is lacking in the latter, besides showing highly significant difference in the penis sheath: prepuce and uterine complex: penial complex ratios. Crossbreeding experiments which lend additional support to the recognition of B. t. guaibensis as a subspecies will be reported elsewhere.

Rendimento de grãos de soja e de milho, no Rio Grande do Sul, não difere entre eventos El Niño Oscilação Sul

Agrometeoros ◽  
2018 ◽  
Vol 26 (1) ◽  
Author(s):  
Ronaldo Matzenauer ◽  
Bernadete Radin ◽  
Alberto Cargnelutti Filho
Keyword(s):  
El Niño ◽  
El Nino ◽  
Southern Oscillation ◽  
Rio Grande ◽  
La Niña ◽  
Rio Grande Do Sul ◽  
La Nina ◽  
Significant Difference ◽  
Income Data ◽  
The Relationship

O objetivo deste trabalho foi avaliar a relação entre o fenômeno El Niño Oscilação Sul - ENOS e o rendimento de grãos de soja e de milho no Rio Grande do Sul e verificar a hipótese de que os eventos El Niño são favoráveis e os eventos La Niña são prejudiciais ao rendimento de grãos das culturas. Foram utilizados dados de rendimento de grãos dos anos agrícolas de 1974/75 a 2016/17, e relacionados com as ocorrências de eventos ENOS. Foram analisados os dados de rendimento observados na colheita e os dados estimados com a remoção da tendência tecnológica. Os resultados mostraram que não houve diferença significativa do rendimento médio de grãos de soja e de milho na comparação entre os eventos ENOS. Palavras-chave: El Niño, La Niña, safras agrícolas. Abstract – The objective of this work was to evaluate the relationship between the El Niño Southern Oscillation (ENSO) phenomenon with the grain yield of soybean and maize in Rio Grande do Sul state, Brazil and to verify the hypothesis that the El Niño events are favorable and the La Niña events are harmful to the culture’s grain yields. Were used data from the agricultural years of 1974/75 to 2016/17, and related to the occurrence of ENOS events. We analyzed income data observed at harvest and estimated data with technological tendency was removed. The results showed that there was no significant difference in the average yield of soybeans and corn in the comparison between events.

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