Karin Werther

ORCID: 0000-0002-8822-488X
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About
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Research Areas
  • Bird parasitology and diseases
  • Viral Infections and Vectors
  • Vector-borne infectious diseases
  • Toxoplasma gondii Research Studies
  • Rabies epidemiology and control
  • Parasite Biology and Host Interactions
  • Veterinary Pharmacology and Anesthesia
  • Avian ecology and behavior
  • Wildlife Ecology and Conservation
  • Comparative Animal Anatomy Studies
  • Bone fractures and treatments
  • Parasitic Infections and Diagnostics
  • Turtle Biology and Conservation
  • Microbial infections and disease research
  • Herpesvirus Infections and Treatments
  • Leptospirosis research and findings
  • Yersinia bacterium, plague, ectoparasites research
  • Veterinary Orthopedics and Neurology
  • Salmonella and Campylobacter epidemiology
  • Bartonella species infections research
  • Identification and Quantification in Food
  • Fish biology, ecology, and behavior
  • Nail Diseases and Treatments
  • Fungal Infections and Studies
  • Evolution and Paleontology Studies

Universidade Estadual Paulista (Unesp)
2016-2025

Museu de Ciências Naturais da Fundação Zoobotânica do Rio Grande do Sul
2020

Fundação de Apoio à Universidade Federal de São Paulo
2020

Núcleo de Pesquisas Aplicadas (Brazil)
2015-2020

Universidade de Franca
2020

Universidade Federal do Pampa
2020

Universidade Federal de Minas Gerais
2020

Universidade Estadual de Santa Cruz
2020

Ludwig-Maximilians-Universität München
2017

Universidade de São Paulo
2016

This study aimed to isolate and genotype T. gondii from Brazilian wildlife. For this purpose, 226 samples were submitted mice bioassay screened by PCR based on 18S rRNA sequences. A total of 15 isolates obtained, including four armadillos (three Dasypus novemcinctus, one Euphractus sexcinctus), three collared anteaters (Tamandua tetradactyla), whited-lipped peccaries (Tayassu pecari), spotted paca (Cuniculus paca), oncilla (Leopardus tigrinus), hoary fox (Pseudalopex vetulus), lineated...

10.1016/j.ijppaw.2014.09.003 article EN cc-by-nc-nd International Journal for Parasitology Parasites and Wildlife 2014-10-13

SUMMARY The order Chiroptera is considered the second largest group of mammals in world, hosting important zoonotic virus and bacteria. Bartonella hemotropic mycoplasmas are bacteria that parasite different mammals’ species, including humans, causing clinical manifestations. present work aimed investigating occurrence assessing phylogenetic positioning spp. Mycoplasma neotropical bats sampled from Brazil. Between December 2015 April 2016, 325 blood and/or tissues samples were collected 162...

10.1017/s0950268817000966 article EN Epidemiology and Infection 2017-05-15

In order to investigate new hosts for Anaplasmataceae agents in Brazil, we collected blood samples from 21 wild birds. Using molecular techniques, detected the presence of Anaplasma phagocytophilum, Ehrlichia chaffeensis, and an species closely related canis carnivorous avian samples. addition, found felines Brazil was also a goose sample. Wild birds may play role as carriers Brazil.

10.1089/vbz.2011.0803 article EN Vector-Borne and Zoonotic Diseases 2012-05-18
Clara Grilo Michely R. Coimbra Rafaela Cobuci Cerqueira Priscilla Barbosa Rubem A.P. Dornas and 95 more Larissa Oliveira Gonçalves Fernanda Zimmermann Teixeira Igor Pfeifer Coelho Brenda R. Schmidt Diana L. K. Pacheco Gabriela Schuck Isadora B. Esperando Juan Andres Anza Júlia Beduschi Nicole R. Oliveira Paula Fabiana Pinheiro Alex Bager Helio Secco Marcello Guerreiro Carine Firmino Carvalho-Roel Aline Carneiro Veloso Ana Elizabeth Iannini Custódio Oswaldo Marçal Giordano Ciocheti Julia Camara Assis Milton Cézar Ribeiro Beatriz S. S. Francisco Jorge José Cherem Tatiane Campos Trigo Márcia Maria de Assis Jardim Ingridi Camboim Franceschi Caroline Espinosa Flávia Pereira Tirelli Vlamir José Rocha Margareth Lumy Sekiama Gedimar Pereira Barbosa Helen Regina da Silva Rossi Tainah Cruz Moreira Marcelo Cervini Clarissa Rosa Lucas Gonçalves da Silva Cláudia Márcia Marily Ferreira Augusto César Janaína Casella Sérgio Lucena Mendes Juliana Zina Deivson Fraga de Oliveira Bastos Ricardo A. T. Souza Paulo Afonso Hartmann Ângela Camila Deffaci Jéssica Mulinari Siane C. Luzzi Tiago Rezzadori Cassiane Kolcenti Tiago Xavier Reis Vanessa S. C. Fonseca Camilo F. Giorgi Raissa Prior Migliorini Carlos Benhur Kasper Cecília Bueno Marcela Sobanski Ana Paula Fernanda Guimarães Pereira Fernanda Atanaena Gonçalves de Andrade Marcus Emanuel Barroncas Fernandes Luiz Liberato Costa Corrêa Adriana Nepomuceno Áureo Banhos Wellington Hannibal Rogério Fonseca Lizit Alencar da Costa Emília Patrícia Medici Aline Croce Karin Werther Juliana Paula de Oliveira Julia M. Ribeiro Mariele de Santi Aline Eyko Kawanami Lívia Perles Caroline do Couto Daniela S. Figueiró Eduardo Eizirik Antonio A. Correia Fábio Mathias Corrêa Diego Queirolo André L. Quagliatto Bruno H. Saranholi Pedro Manoel Galetti Karen Giselle Rodríguez-Castro Vívian S. Braz Frederico Gustavo Rodrigues França Gerson Buss Josias A. Rezini Marília Bruzzi Lion Carolina Carvalho Cheida Ana Cristyna Reis Lacerda Carlos Henrique de Freitas Fernando Venâncio Cristina Harumi Adania Augusto Florisvaldo Batisteli Carla Grasiele Zanin Hegel

Abstract Mortality from collision with vehicles is the most visible impact of road traffic on wildlife. due to roads (hereafter road‐kill) can affect dynamic populations many species and can, therefore, increase risk local decline or extinction. This especially true in Brazil, where plans for network upgrading expansion overlaps biodiversity hotspot areas, which are high importance global conservation. Researchers, conservationists planners face challenge define a national strategy...

10.1002/ecy.2464 article EN Ecology 2018-09-19

Neospora caninum is a protozoan parasite that presents worldwide distribution and mainly implicated as responsible for bovine abortion. Although the presence of birds in cattle-raising properties positively correlated to higher infection rates, very little has been described about role these animals parasite's life cycle. In sense, this work aimed investigate serological histological positivity different avian species sampled its natural habitat or captivity. No was observed 294 tested serum...

10.1016/j.vetpar.2011.05.022 article EN publisher-specific-oa Veterinary Parasitology 2011-05-27

Abstract Anaplasmataceae agents are obligatory intracellular Gram-negative α-proteobacteria that transmitted mostly by arthropod vectors. Although mammals of the Superorder Xenarthra (sloths, anteaters, and armadillos) have been implicated as reservoirs for several zoonotic agents, only few studies sought to detect in this group mammals. This study aimed investigate occurrence genetic diversity Anaplasma spp. Ehrlichia blood spleen samples free-living from four different states Brazil (São...

10.1038/s41598-020-69263-w article EN cc-by Scientific Reports 2020-07-28

An outbreak of cryptococcosis occurred in a breeding aviary São Paulo, Brazil. Seven psittacine birds (of species Charmosyna papou, Lorius lory, Trichoglossus goldiei, Psittacula krameri and Psittacus erithacus) died disseminated cryptococcosis. Incoordination, progressive paralysis difficulty flying were seen five birds, whereas superficial lesions coincident with respiratory alterations two birds. Encapsulated yeasts suggestive Cryptococcus sp. faecal smears stained India ink cases....

10.1080/13693780410001712061 article EN Medical Mycology 2004-01-01

The rock pigeon (Columba livia) may serve as a reservoir for several pathogenic agents that can be transmitted to poultry, wildlife, domesticated pets, and/or humans via excreta, secretions, or dust from feathers. In addition, ingestion of infected pigeons by wild and domestic animals also transmit these agents. health status 126 free-living in an urban area was evaluated microbiologic culture Salmonella serologic testing the presence antibodies Toxoplasma gondii Newcastle disease virus...

10.1638/2008-0166.1 article EN Journal of Zoo and Wildlife Medicine 2010-12-01

Background Nematodes of the genus Trichinella are foodborne zoonotic pathogens that widespread globally. These parasites have two epidemiological cycles, domestic and sylvatic, with latter having wild carnivores as main reservoirs parasite. spp. been increasingly detected in Argentina Chile. Although disease is absent animals Brazil, there serological evidence agent circulating boars some areas. This study aimed to diagnose infection through artificial tissue digestion histopathology...

10.3389/fitd.2024.1501710 article EN cc-by Frontiers in Tropical Diseases 2025-01-07

Although the stifle joint of wild felines shares several characteristics observed in domestic cats, other are specific to each species. This study aimed evaluate joints eight Puma concolor, including two young and six adults, through different imaging examinations. All stifles were assessed using radiographs computed tomography (CT). Magnetic resonance (MRI) was performed on one animal 7 Tesla equipment. In all modalities, four sesamoid bones detected. Meniscal mineralization identified...

10.3390/vetsci12020103 article EN cc-by Veterinary Sciences 2025-02-01

Although mammals of the superorder Xenarthra are considered hosts a wide range zoonotic agents, works aiming at investigating role these animals as for bacteria with potential rare. The present study aimed to investigate occurrence and molecularly characterize Coxiella burnetii haemoplasma (haemotropic mycoplasmas) DNA in blood spleen samples from 397 free-living (233 sloths, 107 anteaters 57 armadillos) five Brazilian states (Mato Grosso do Sul, São Paulo, Pará, Rondônia Rio Grande Sul)....

10.1111/tbed.14523 article EN Transboundary and Emerging Diseases 2022-03-17

Cryptococcus spp. are responsible for around one million cases of meningitis every year. Fluconazole (FLU) is commonly used in the treatment cryptococcosis, mainly immunocompromised patients and resistance usually reported after long periods treatment. In this study, morphological characterization virulence profile FLU-susceptible FLU-resistant clinical environmental isolates C. neoformans gattii were performed both vitro vivo using Galleria mellonella model. from significantly more virulent...

10.3389/fmicb.2016.00153 article EN cc-by Frontiers in Microbiology 2016-02-16

Toxoplasma gondii affects mainly warm-blooded animals, including birds. Even though previous experimental data indicate that raptors are resistant to clinical infection, there is no information regarding the susceptibility of Brazilian birds prey T. gondii. The present study aimed observe how crested caracara, a common raptor in Brazil, interacts with using an model. Seven caracaras, seronegative for gondii, were separated into infected (n = 5) and control groups 2). Birds from group fed...

10.1016/j.vetpar.2010.04.010 article EN publisher-specific-oa Veterinary Parasitology 2010-04-19

The superorder Xenarthra consists of sloths, anteaters and armadillos, mammals originated from South America currently distributed the south North to America. present study aimed investigate occurrence genetic diversity Bartonella spp. in blood spleen samples free-living states São Paulo (SP), Mato Grosso do Sul (MS), Rondônia (RO) Pará (PA). Based on a quantitative real-time PCR (qPCR) assay, nuoG gene fragment was detected 1.51% (5/330) samples: 4 six-banded armadillos (Euphractus...

10.1111/tbed.13545 article EN Transboundary and Emerging Diseases 2020-03-11

Although the natural reservoirs of avian influenza (AI) virus have been extensively studied in many countries, there is a clear lack information on this subject South America, particularly Brazil. The objective study was to conduct serological survey for H5, H7 and H9 antibodies AI-subtype viruses wild birds state São Paulo , Serum samples were tested using hemagglutination-inhibition assay. Out 31 sampled between January December 2006, seven (22.58%), seropositive H9; four (12.90%) H5 H7;...

10.1590/s1516-635x2013000300001 article EN cc-by Brazilian Journal of Poultry Science 2013-09-01

Hepatozoon species are the most common intracellular hemoparasite found in reptiles. caimani, whose vectors Culex mosquitoes, has been detected a high prevalence among caimans Brazil by blood smears examinations. The present work aimed to detect and characterize spp. 33 (24 free-ranging 9 captive; 28 males 5 females) (Caiman crocodilus yacare) sampled at Poconé, North Pantanal, state of Mato Grosso, Brazil, using examinations molecular techniques. spp.-gametocytes were 70.8% (17/24) 88.8%...

10.1590/s1984-29612017041 article EN cc-by Revista Brasileira de Parasitologia Veterinária/Brazilian Journal of Veterinary Parasitology 2017-08-23
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