Ornithodoros brasiliensis Aragão (Acari: Argasidae): description of the larva, redescription of male and female, and neotype designation

Ornithodoros brasiliensis is an endemic tick from Brazil and is very aggressive to humans, resulting in pain, fever andintense inflammatory response. After more than 50 years without report, this species was recently found in rural areas ofSão Francisco de Paula municipality, State of Rio Grande do Sul, southern Brazil, from where it was originally described.Herein, we describe the larva and redescribe the adults of O. brasiliensis based on scanning electron microscopy. Sincethe type was lost we designate the neotype specimen under the number IBSP 10409. In addition, the relationship betweenO. brasiliensis and other species from the Neotropical region that share the morphological characteristics of Ornithodoroswith dorsal humps on tarsi, and also live under the soil and feed on hosts other than bats, are discussed. Molecular analysisinferred from a portion of the 16S rRNA mitochondrial gene is also provided and it placed O. brasiliensis in a cluster sup-ported by a maximal bootstrap value (100%) with Ornithodoros parkeri, Ornithodoros rostratus, and Ornithodoros turicata.

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Four new species of monoraphid diatoms from Western Sichuan Plateau in China

Phytotaxa ◽

10.11646/phytotaxa.479.3.3 ◽

2021 ◽

Vol 479 (3) ◽

pp. 257-274

Author(s):

Q.M. YOU ◽

K. ZHAO ◽

Y.L. WANG ◽

P. YU ◽

J.P. KOCIOLEK ◽

...

Keyword(s):

Electron Microscopy ◽

New Species ◽

Central Area ◽

Morphological Characteristics ◽

Similar Species ◽

Small Species ◽

Western Sichuan ◽

The Relationship ◽

Scanning Electron ◽

Apical Axis

Four new monoraphid diatoms are examined and described from a high-altitude (> 3000 m) region of western Sichuan, China. The descriptions are based on light and scanning electron microscopy observations, and the four new species are compared with similar taxa worldwide. Achnanthidium sichuanense sp. nov. has small, lanceolate-elliptical valves, with rounded apices. The outline and central area differentiate it from similar species. The unique characteristic of Eucocconeis undulatum sp. nov. is that it has valves that are undulate along the apical axis, forming an “H”-shaped area on both raphe and rapheless valves as seen in light microscope (LM). Platessa mugecuonesis sp. nov. and Platessa lanceolata sp. nov. are two small species, whose valve outlines and central areas make them different from other species in this genus. A. sichuanense sp. nov. and E. undulatum sp. nov. are discussed in terms of the relationship between “Achnanthidium & Psammothidium” and “Eucocconeis & Psammothidium”, as these genera are difficult to separate according to morphological characteristics.

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Atractis thapari (Nematoda, Atractidae) parasitizing Chelonoidis carbonarius and C. denticulatus (Testudinidae) in the state of Piauí, Brazil

Revista Brasileira de Parasitologia Veterinária ◽

10.1590/s1984-29612018007 ◽

2018 ◽

Vol 27 (2) ◽

pp. 146-153

Author(s):

Anangela Ravena da Silva Leal ◽

Simone Mousinho Freire ◽

Marcelo Knoff ◽

Delir Corrêa Gomes ◽

Jeannie Nascimento dos Santos ◽

...

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Neotropical Region ◽

Health Conditions ◽

Taxonomic Identification ◽

Bright Field ◽

New Host ◽

Male And Female ◽

Mean Intensity ◽

Scanning Electron

Abstract Atractis thapari Petter, 1966, an atractid nematode, was collected parasitizing the large intestine of tortoises of the species Chelonoidis carbonarius (Spix, 1824) (Cc) and C. denticulatus (Linnaeus, 1766) (Cd) (Testudinidae) in the Zoobotanical Park of the municipality of Teresina, state of Piauí, Brazil. Taxonomic identification was based on morphological and morphometrical features, and using bright-field and scanning electron microscopy. The present study adds new observations on the morphology of A. thapari, mainly relating to mouth papillae, the excretory pore, deirids, and male and female posterior ends. The parasitic indices of prevalence (P), mean intensity (MI), mean abundance (MA) and range of infection (RI) for A. thapari in these two tortoise species were: P = 100%, MI = 154,667, MA = 154,667, RI = 5,500-588,500 (Cc); P = 100%, MI = 93,639, MA = 93,639, RI = 1,000-224,500 (Cd). This report confirms the occurrence of A. thapari in Neotropical region, South America, Brazil, and extends its occurrences to a new host, the tortoise C. carbonarius. Adjustment of host management with the aim of improving hygiene and health conditions is suggested.

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The Analysis of Water Availability as an Important Factor for Farmers' Permanence in the Field: A Study in Southern Brazilian Countryside

International Journal for Innovation Education and Research ◽

10.31686/ijier.vol7.iss10.1774 ◽

2019 ◽

Vol 7 (10) ◽

pp. 296-306

Author(s):

José Luis Perlin ◽

Dieison Prestes da Silveira ◽

Jana Koefender ◽

Roberta Cattaneo Horn ◽

Juliane Nicolodi Camera ◽

...

Keyword(s):

Quality Of Life ◽

Water Availability ◽

Rural Areas ◽

Rio Grande ◽

Southern Brazil ◽

Rio Grande Do Sul ◽

Qualitative And Quantitative ◽

Fundamental Factor ◽

Family Farmers

Water availability in rural areas is essential to production activities and quality of life. The aim of the current study is to evaluate the key role played by water resources in rural properties as a factor for farmers' permanence in the field in Southern Brazil. The research followed a qualitative and quantitative approach, which encompassed the application of semi-structured questionnaires to family farmers living in Marmeleiro and Fontana Freda communities, in the rural area of Jaguari County, Rio Grande do Sul State, Brazil. Based on collected data, participants have shown knowledge about aspects such as water quality and availability, as well as about the preservation of this resource. Nevertheless, it was clear that water availability is a fundamental factor for farmers to remain in the field.

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Further notes on the morphology and distribution of Neopaxillus echinospermus (Agaricales, Basidiomycota) in Southern Brazil

Check List ◽

10.15560/12.1.1834 ◽

2016 ◽

Vol 12 (1) ◽

pp. 1834 ◽

Cited By ~ 1

Author(s):

Alexandre Gonçalves dos Santos Silva-Filho ◽

Gilberto Coelho ◽

Vagner Gularte Cortez

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

South America ◽

Rio Grande ◽

Morphological Features ◽

Southern Brazil ◽

Rio Grande Do Sul ◽

Scanning Electron

Neopaxillus echinospermus is a common but poorly understood agaric species from South America (Argentina, Bolivia, Brazil and Paraguay). In this paper, we discuss conflicting morphological features reported in the literature and expand the distribution of the species to Seasonal Deciduous and Semideciduous Forests from Rio Grande do Sul and Paraná states, respectively, in Southern Brazil. Hyphal structure of the pileipellis, presence of cheilocystidia and caulocystidia, presence of clamp connections and oleiferous (thrombopleurous) hyphae, and the basidiospore morphology under scanning electron microscopy are illustrated and discussed in detail.

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Description of Two New Species of the Genus Vorticella (Ciliophora: Peritrichia) Epibionts on Pomacea canaliculata (Mollusca: Ampullariidae: Gastropoda) in Southern Brazil

Zootaxa ◽

10.11646/zootaxa.4508.2.4 ◽

2018 ◽

Vol 4508 (2) ◽

pp. 211

Author(s):

MARCOS W. O. PEREIRA ◽

FABIANO CARVALHO De BRITO ◽

EDUARDO EIZIRIK ◽

LAURA R. P. UTZ

Keyword(s):

New Species ◽

Rio Grande ◽

The Other ◽

Pomacea Canaliculata ◽

Regular Pattern ◽

Southern Brazil ◽

Rio Grande Do Sul ◽

Patos Lagoon ◽

Two New Species ◽

Scanning Electron

The peritrich ciliates Vorticella veloxiiforme n.sp. and Vorticella ampullaria n.sp. were found as epibionts on the ampullarid mollusk Pomacea canaliculata collected from Patos Lagoon, Rio Grande do Sul state, Brazil. The detailed morphology of both species was investigated using live and stained specimens, as well as scanning electron microscopy. Zooids of Vorticella veloxiiforme are cup shaped measuring 57 X 41 μm on average. A J-shaped macronucleus lies in the upper half of the cell. One contractile vacuole was observed in the upper part of the cell. V. ampullaria presents an elongate zooid measuring 70 X 25 µm on average. A C-shaped macronucleus lies in the middle of the cell. Two contractile vacuoles are present: one close to the peristome and the other in the lower half of the cell. The pattern of oral polykinetids was typical of the genus, with all infundibular polykinetids composed by three rows of kinetosomes each. SEM revealed a regular pattern of pores present on the zooid membrane of both species. Analyses of the 18s rDNA placed the two new species in the order Vorticellida close to described species of Vorticella.

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Contracaecum rudolphii Hartwich (Nematoda, Anisakidae) from the Neotropical Cormorant, Phalacrocorax brasilianus (Gmelin) (Aves, Phalacrocoracidae) in southern Brazil

Revista Brasileira de Zoologia ◽

10.1590/s0101-81752006000400046 ◽

2006 ◽

Vol 23 (4) ◽

pp. 1284-1289 ◽

Cited By ~ 14

Author(s):

José F. R. Amato ◽

Cassandra M. Monteiro ◽

Suzana B. Amato

Keyword(s):

Present Report ◽

First Record ◽

Helminth Fauna ◽

Southern Brazil ◽

Rio Grande Do Sul ◽

Larval Stages ◽

Contracaecum Rudolphii ◽

Scanning Electron ◽

Phalacrocorax Brasilianus

The present report is part of a larger study on the helminth fauna of Neotropical Cormorants, Phalacrocorax brasilianus (Gmelin, 1789) in Brazil, particularly, in the southernmost State of Rio Grande do Sul. The nematodes which were found loose in the proventriculus/ventriculus or in groups of adults of different ages and of L3 and L4 larval stages, forming eosinophylic granulomas had a prevalence of 100% in 47 Neotropical cormorants from Lago Guaíba, Municipality of Guaíba. The morphology of the labia/interlabia, the distribution pattern of the caudal papillae in males examined under scanning electron microscopy (SEM), and the tips of the spicules allowed determination of the species as Contracaecum rudolphii Hartwich, 1964 sensu lato (s. l.). This is the first record of C. rudolphii in southern Brazil.

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Reproductive biology and sexual dimorphism in Cnemidophorus vacariensis (Sauria, Teiidae) in the grasslands of the Araucaria Plateau, southern Brazil

Iheringia Série Zoologia ◽

10.1590/s0073-47212009000100012 ◽

2009 ◽

Vol 99 (1) ◽

pp. 82-91 ◽

Cited By ~ 8

Author(s):

Fabíola M. Rezende-Pinto ◽

Laura Verrastro ◽

Juliana C. Zanotelli ◽

Paulo C. R. Barata

Keyword(s):

Sexual Dimorphism ◽

Environmental Factors ◽

Clutch Size ◽

Morphological Characteristics ◽

Rio Grande ◽

Reproductive Season ◽

Southern Brazil ◽

Rio Grande Do Sul ◽

Threatened Fauna ◽

Sexually Mature

The reproductive cycle and sexual dimorphism of the lizard Cnemidophorus vacariensis Feltrim & Lema, 2000 were studied on the basis of data gathered between August 2004 and August 2006 in Vacaria, Rio Grande do Sul, Brazil. Snout-vent length (SVL) of sexually mature males varied between 48.8 and 72.9 mm (x = 63.3 ± 6.0 mm; n = 76) and, for females, between 57.4 and 81.8 mm (x = 70.0 ± 5.9 mm; n = 73). Other morphological characteristics were also compared between sexes. Reproduction was seasonal, and observations indicate two clutches in the same reproductive season. Clutch size and other reproductive characteristics were analyzed as well as the relation between reproduction and environmental factors. Cnemidophorus vacariensis is apparently endemic to highland plateaus in southern Brazil and has been classified as vulnerable on some lists of threatened fauna in this country. Some suggestions for conservation measures are presented, due to the observed degradation of this species' environment.

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Gauchergasilus euripedesi (Copepoda, Ergasilidae) parasitizing different species of fish from two environments in southern Brazil

Neotropical Biology and Conservation ◽

10.3897/neotropical.16.e64668 ◽

2021 ◽

Vol 16 (2) ◽

pp. 289-298

Author(s):

Moisés Gallas ◽

Laura R. P. Utz

Keyword(s):

Electron Microscopy ◽

Fish Species ◽

Rio Grande ◽

Parasitic Copepod ◽

Southern Brazil ◽

Rio Grande Do Sul ◽

Porto Alegre ◽

Patos Lagoon ◽

Estuarine Area ◽

Scanning Electron

The parasitic copepod Gauchergasilus euripedesi (Montú, 1980) Montú & Boxshall, 2002 was described from plankton samples and specimens found in four fish species from the estuarine area of Patos Lagoon, state of Rio Grande do Sul (RS), Brazil. Later, one different fish species was reported parasitized with G. euripedesi in the same locality. Species of Astyanax Baird & Girard, 1854 (Astyanax henseli Melo & Buckup, 2006 and Astyanax lacustris (Lütken, 1875)) and Psalidodon Eigenmann, 1911 (Psalidodon eigenmanniorum (Cope, 1894) and Psalidodon aff. fasciatus (Cuvier, 1819)) were collected in two environments (Pintada Island, municipality of Porto Alegre and Itapeva Lagoon, municipality of Terra de Areia, RS) to investigate their parasites. The copepods found in the gill arches were counted, processed, mounted in permanent slides, and photographed using light microscopy, or processed for observation in scanning electron microscopy. Specimens of P. eigenmanniorum from Pintada Island, A. lacustris and P. aff. fasciatus from Itapeva Lagoon, were parasitized by G. euripedesi, with prevalences of 29.03% (A. lacustris), 10.34% (P. eigenmanniorum), and 9.68% (P. aff. fasciatus). Measurements obtained for specimens of G. euripedesi were similar to those found in the literature, except for egg sacs which were larger in the specimens examined in the present study. In addition to being the first report of G. euripedesi parasitizing species of fish (A. lacustris, P. eigenmanniorum, and P. aff. fasciatus), the results presented here also extend the known geographic distribution of the copepod species.

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Moral distress in nursing personnel

Revista Latino-Americana de Enfermagem ◽

10.1590/s0104-11692013000700011 ◽

2013 ◽

Vol 21 (spe) ◽

pp. 79-87 ◽

Cited By ~ 19

Author(s):

Edison Luiz Devos Barlem ◽

Valéria Lerch Lunardi ◽

Guilherme Lerch Lunardi ◽

Jamila Geri Tomaschewski-Barlem ◽

Rosemary Silva da Silveira ◽

...

Keyword(s):

Professional Practice ◽

Moral Distress ◽

Working Hours ◽

Nursing Personnel ◽

Southern Brazil ◽

Rio Grande Do Sul ◽

Team Meetings ◽

Practice Method ◽

Distress Scale ◽

The Relationship

OBJECTIVE: to analyze the frequency and intensity of moral distress experienced by nursing personnel in southern Brazil, covering elements of their professional practice. METHOD: a survey was undertaken in two hospitals in Rio Grande do Sul, Brazil, with 247 nurses. Data was collected by means of the adapted Moral Distress Scale. RESULTS: the perception of situations that lead to moral distress is enhanced in nurses and in nursing staff working in institutions with greater openness to dialogue, which hold team meetings, with fewer working hours and a greater ratio of professionals to patients. CONCLUSION: understanding moral distress allows us to go beyond solving the problems of the workers themselves, enabling the development of an ethics of active individuals and wide opportunities, defined mainly by the relationship with oneself.

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Nitzschia papillosa (Bacillariaceae, Bacillariophyta): a new species from a Brazilian salt marsh

Phytotaxa ◽

10.11646/phytotaxa.247.1.5 ◽

2016 ◽

Vol 247 (1) ◽

pp. 75 ◽

Cited By ~ 1

Author(s):

Lucielle Merlym Bertolli ◽

Dávia Marciana Talgatti ◽

Lezilda Carvalho Torgan

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

New Species ◽

Salt Marsh ◽

First Record ◽

Southern Brazil ◽

Rio Grande Do Sul ◽

Patos Lagoon ◽

A New Species ◽

Scanning Electron

A new species of the genus Nitzschia was found in epiphyton and microphytobenthos at the Patos Lagoon salt marsh (Rio Grande do Sul State, southern Brazil). Nitzschia papillosa sp. nov. was described under light and scanning electron microscopy and compared with other species from the section Lanceolatae. The species presents features shared by several species of the genus such as a linear-lanceolate outline, cuneate ends and irregularly distributed fibulae. The distinguishable feature is a row of dots on the margin opposite to the fibulae. In scanning electron microscopy, these structures appear as silica excrescences, little rounded or squared, which we refer as papillae, situated at the transapical costae in the internal valve face. This is the first record of this kind of ornamentation in Nitzschia species.

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