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https://www.readbyqxmd.com/read/29594844/host-parasite-association-between-didelphis-albiventris-didelphimorphia-didelphidae-and-ixodes-loricatus-acari-ixodidae-in-their-southern-ranges
#1
Evelina L Tarragona, Mariano Mastropaolo, Daniel Zurvera, Pablo M Beldomenico, Alberto A Guglielmone
The parasitism of Ixodes loricatus Neumann on white-eared opposum, Didelphis albiventris Lund, was analysed in the southern ranges of both. In central Argentina, 118 wild opossums were captured from 2005 to 2012. Adults of I. loricatus were collected (prevalence = 66.1%, mean = 7.03, median = 4), but no immature stage. Tick infestation was not affected by sex (p = 0.27) or age (p = 0.37) of hosts. In line with previous studies about seasonality of larvae and nymphs of I. loricatus, adult tick infestation showed no seasonal trend...
March 28, 2018: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/29211107/trypanosoma-janseni-n-sp-trypanosomatida-trypanosomatidae-isolated-from-didelphis-aurita-mammalia-didelphidae-in-the-atlantic-rainforest-of-rio-de-janeiro-brazil-integrative-taxonomy-and-phylogeography-within-the-trypanosoma-cruzi-clade
#2
Camila Madeira Tavares Lopes, Rubem Figueiredo Sadok Menna-Barreto, Márcio Galvão Pavan, Mirian Cláudia De Souza Pereira, André Luiz R Roque
BACKGROUND: Didelphis spp. are a South American marsupial species that are among the most ancient hosts for the Trypanosoma spp. OBJECTIVES: We characterise a new species (Trypanosoma janseni n. sp.) isolated from the spleen and liver tissues of Didelphis aurita in the Atlantic Rainforest of Rio de Janeiro, Brazil. METHODS: The parasites were isolated and a growth curve was performed in NNN and Schneider's media containing 10% foetal bovine serum...
January 2018: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/29183283/mitochondrial-genome-sequencing-reveals-potential-origins-of-the-scabies-mite-sarcoptes-scabiei-infesting-two-iconic-australian-marsupials
#3
Tamieka A Fraser, Renfu Shao, Nicholas M Fountain-Jones, Michael Charleston, Alynn Martin, Pam Whiteley, Roz Holme, Scott Carver, Adam Polkinghorne
BACKGROUND: Debilitating skin infestations caused by the mite, Sarcoptes scabiei, have a profound impact on human and animal health globally. In Australia, this impact is evident across different segments of Australian society, with a growing recognition that it can contribute to rapid declines of native Australian marsupials. Cross-host transmission has been suggested to play a significant role in the epidemiology and origin of mite infestations in different species but a chronic lack of genetic resources has made further inferences difficult...
November 28, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/29103397/anaplasmataceae-agents-among-wild-mammals-and-ectoparasites-in-brazil
#4
K C M DE Sousa, A C Calchi, H M Herrera, J S Dumler, D M Barros-Battesti, R Z Machado, M R André
Anaplasmataceae agents comprise obligate intracellular bacteria that can cause disease in humans and animals. Between August 2013 and March 2015, 31 Nasua nasua (coati), 78 Cerdocyon thous (crab-eating fox), seven Leopardus pardalis (ocelot), 110 wild rodents, 30 marsupials, and 42 dogs were sampled in the Pantanal wetland, Brazil. In addition, ectoparasites found parasitizing the animals were collected and identified. The present work aimed to investigate the occurrence of Anaplasmataceae agents in wild mammals, domestic dogs and ectoparasites, by molecular and serological techniques...
December 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28986107/parasites-at-risk-insights-from-an-endangered-marsupial
#5
REVIEW
R C Andrew Thompson, Alan J Lymbery, Stephanie S Godfrey
Parasites are the most abundant form of life on earth and are vital components of ecosystem health. Yet, it is only relatively recently that attention has been given to the risks of extinction that parasites face when their hosts, particularly wildlife, are endangered. In such circumstances, parasites that are host-specific with complicated life cycles are most at risk. Such extinction/coextinction events have been poorly documented, principally because of the difficulties of following such extinction processes in nature...
January 2018: Trends in Parasitology
https://www.readbyqxmd.com/read/28977769/trypanosoma-cruzi-and-leishmania-sp-infection-in-wildlife-from-urban-rainforest-fragments-in-northeast-brazil
#6
Indira Trüeb, Ricardo D Portela, Carlos R Franke, Ianei O Carneiro, Gilmar J Ribeiro, Rodrigo P Soares, Stella Maria Barrouin-Melo
:  Trypanosoma cruzi and Leishmania sp. are important protozoan parasites for humans and animals in the Americas, causing Chagas disease and cutaneous or visceral leishmaniasis, respectively. These vector-borne diseases affect permanent and transient populations in developing tropical countries that exhibit favorable conditions for the perpetuation of the parasite cycle. Our objective was to investigate the occurrence of infection with these parasites in wild animals from urban rainforest fragments in the city of Salvador, the largest city in the northeast region of Brazil...
January 2018: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28728938/didelphis-albiventris-naturally-infected-with-hepatozoon-canis-in-southeastern-brazil
#7
Maria Regina Lucas da Silva, Felipe Fornazari, Larissa de Castro Demoner, Carlos Roberto Teixeira, Helio Langoni, Lucia Helena O'Dwyer
Hepatozoon species are vector-borne pathogens that infect domestic and wild animals. Marsupials of the species Didelphis albiventris are adapted to urban and peri-urban areas and act as reservoir hosts for several parasites. The present study evaluated the occurrence of infection by Hepatozoon species in synantropic D. albiventris from Botucatu, São Paulo, Brazil. Blood samples and ectoparasites from 19 D. albiventris were collected from urban and peri-urban areas. Hepatozoon spp. detection was performed by microscopy and molecular analysis...
July 14, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28529879/beyond-the-raccoon-roundworm-the-natural-history-of-non-raccoon-baylisascaris-species-in-the-new-world
#8
REVIEW
Sarah G H Sapp, Pooja Gupta, Melissa K Martin, Maureen H Murray, Kevin D Niedringhaus, Madeleine A Pfaff, Michael J Yabsley
A total of 10 species of Baylisascaris, a genus of ascaridoid nematodes, occur worldwide and 6 of them occur in the New World. Most of the Baylisascaris species have a similar life cycle with carnivorous mammals or marsupials serving as definitive hosts and a smaller prey host serving as paratenic (or intermediate) hosts. However, one species in rodents is unique in that it only has one host. Considerable research has been conducted on B. procyonis, the raccoon roundworm, as it is a well-known cause of severe to fatal neurologic disease in humans and many wildlife species...
August 2017: International Journal for Parasitology. Parasites and Wildlife
https://www.readbyqxmd.com/read/28499908/identification-of-novel-mammalian-hosts-and-brazilian-biome-geographic-distribution-of-trypanosoma-cruzi-tciii-and-tciv
#9
Juliana Helena S Barros, Samanta Cristina C Xavier, Daniele Bilac, Valdirene Santos Lima, Maria Augusta Dario, Ana Maria Jansen
Trypanosoma cruzi is a parasitic protozoan responsible for Chagas disease. Seven different Discrete Typing Units (DTUs) of T. cruzi are currently identified in nature: TcI-TcVI, and TcBat whose distribution patterns in nature, hosts/reservoirs and eco-epidemiological importance are still little known. Here, we present novel data on the geographic distribution and diversity of mammalian hosts and vectors of T. cruzi DTUs TcIII and TcIV. In this study, we analyzed 61 T. cruzi isolates obtained from 18 species of mammals (five orders) and two Hemiptera genera...
May 10, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28423030/molecular-characterization-of-cryptosporidium-and-giardia-from-the-tasmanian-devil-sarcophilus-harrisii
#10
Liana F Wait, Samantha Fox, Sarah Peck, Michelle L Power
The Tasmanian devil (Sarcophilus harrisii) is a carnivorous marsupial found only in the wild in Tasmania, Australia. Tasmanian devils are classified as endangered and are currently threatened by devil facial tumour disease, a lethal transmissible cancer that has decimated the wild population in Tasmania. To prevent extinction of Tasmanian devils, conservation management was implemented in 2003 under the Save the Tasmanian Devil Program. This study aimed to assess if conservation management was altering the interactions between Tasmanian devils and their parasites...
2017: PloS One
https://www.readbyqxmd.com/read/28366511/occurrence-and-molecular-characterization-of-hemoplasmas-in-domestic-dogs-and-wild-mammals-in-a-brazilian-wetland
#11
Keyla Carstens Marques de Sousa, Heitor Miraglia Herrera, Caroline Tostes Secato, André do Vale Oliveira, Filipe Martins Santos, Fabiana Lopes Rocha, Wanessa Teixeira Gomes Barreto, Gabriel Carvalho Macedo, Pedro Cordeiro Estrela de Andrade Pinto, Rosangela Zacarias Machado, Mirela Tinucci Costa, Marcos Rogério André
Hemotropic mycoplasmas are known to cause anemia in several mammalian species. The present work aimed to investigate the occurrence of Mycoplasma spp. in wild mammals, domestic dogs and their respective ectoparasites, in southern Pantanal region, central-western Brazil. Between August 2013 and March 2015, 31 Nasua nasua, 78 Cerdocyon thous, seven Leopardus pardalis, 42 dogs, 110 wild rodents, and 30 marsupials were trapped and ectoparasites (ticks and fleas) found parasitizing the animals were collected. Mammals and ectoparasites DNA samples were submitted to conventional PCR assays for Mycoplasma spp...
July 2017: Acta Tropica
https://www.readbyqxmd.com/read/28348050/differential-gamma-interferon-and-tumor-necrosis-factor-alpha-driven-cytokine-response-distinguishes-acute-infection-of-a-metatherian-host-with-toxoplasma-gondii-and-neospora-caninum
#12
Shannon L Donahoe, David N Phalen, Bronwyn M McAllan, Denis O'Meally, Milton M McAllister, John Ellis, Jan Šlapeta
Toxoplasma gondii and Neospora caninum (both Apicomplexa) are closely related cyst-forming coccidian parasites that differ significantly in their host ranges and ability to cause disease. Unlike eutherian mammals, Australian marsupials (metatherian mammals) have long been thought to be highly susceptible to toxoplasmosis and neosporosis because of their historical isolation from the parasites. In this study, the carnivorous fat-tailed dunnart ( Sminthopsis crassicaudata ) was used as a disease model to investigate the immune response and susceptibility to infection of an Australian marsupial to T...
June 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28291601/molecular-detection-of-hepatozoon-spp-in-domestic-dogs-and-wild-mammals-in-southern-pantanal-brazil-with-implications-in-the-transmission-route
#13
Keyla Carstens Marques de Sousa, Marina Pugnaghi Fernandes, Heitor Miraglia Herrera, Jyan Lucas Benevenute, Filipe Martins Santos, Fabiana Lopes Rocha, Wanessa Teixeira Gomes Barreto, Gabriel Carvalho Macedo, João Bosco Campos, Thiago Fernandes Martins, Pedro Cordeiro Estrela de Andrade Pinto, Darci Barros Battesti, Eliane Mattos Piranda, Paulo Henrique Duarte Cançado, Rosangela Zacarias Machado, Marcos Rogério André
Hepatozoon parasites comprise intracellular apicomplexan parasites transmitted to vertebrate animals by ingestion of arthropods definitive hosts. The present work aimed to investigate the occurrence of Hepatozoon spp. in wild animals, domestic dogs and their respective ectoparasites, in southern Pantanal region, central-western Brazil, by molecular techniques. Between August 2013 and March 2015, 31 coatis (Nasua nasua), 78 crab-eating foxes (Cerdocyon thous), seven ocelots (Leopardus pardalis), 42 dogs (Canis lupus familiaris), 110 wild rodents (77 Thichomys fosteri, 25 Oecomys mamorae, and 8 Clyomys laticeps), 30 marsupials (14 Thylamys macrurus, 11 Gracilinanus agilis, 4 Monodelphis domestica and 1 Didelphis albiventris), and 1582 ticks and 80 fleas collected from the sampled animals were investigated...
April 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28213652/evaluating-stress-physiology-and-parasite-infection-parameters-in-the-translocation-of-critically-endangered-woylies-bettongia-penicillata
#14
Stephanie Hing, Amy S Northover, Edward J Narayan, Adrian F Wayne, Krista L Jones, Sarah Keatley, R C Andrew Thompson, Stephanie S Godfrey
Translocation can be stressful for wildlife. Stress may be important in fauna translocation because it has been suggested that it can exacerbate the impact of infectious disease on translocated wildlife. However, few studies explore this hypothesis by measuring stress physiology and infection indices in parallel during wildlife translocations. We analysed faecal cortisol metabolite (FCM) concentration and endoparasite parameters (nematodes, coccidians and haemoparasites) in a critically endangered marsupial, the woylie (Bettongia penicillata), 1-3 months prior to translocation, at translocation, and 6 months later...
March 2017: EcoHealth
https://www.readbyqxmd.com/read/28173840/morphological-and-molecular-description-of-ixodes-woyliei-n-sp-ixodidae-with-consideration-for-co-extinction-with-its-critically-endangered-marsupial-host
#15
Amanda Ash, Aileen Elliot, Stephanie Godfrey, Halina Burmej, Mohammad Yazid Abdad, Amy Northover, Adrian Wayne, Keith Morris, Peta Clode, Alan Lymbery, R C Andrew Thompson
BACKGROUND: Taxonomic identification of ticks obtained during a longitudinal survey of the critically endangered marsupial, Bettongia penicillata Gray, 1837 (woylie, brush-tailed bettong) revealed a new species of Ixodes Latrielle, 1795. Here we provide morphological data for the female and nymphal life stages of this novel species (Ixodes woyliei n. sp.), in combination with molecular characterisation using the mitochondrial cytochrome c oxidase subunit 1 gene (cox1). In addition, molecular characterisation was conducted on several described Ixodes species and used to provide phylogenetic context...
February 7, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28122598/novel-chlamydiales-genotypes-identified-in-ticks-from-australian-wildlife
#16
Delaney Burnard, Haylee Weaver, Amber Gillett, Joanne Loader, Cheyne Flanagan, Adam Polkinghorne
BACKGROUND: Members of the order Chlamydiales are known for their potential as human and veterinary bacterial pathogens. Despite this recognition, epidemiological factors such as routes of transmission are yet to be fully defined. Ticks are well known vectors for many other infections with several reports recently describing the presence of bacteria in the order Chlamydiales in these arthropods. Australian wildlife are hosts to an extensive range of tick species. Evidence is also growing that the marsupial hosts these ticks parasitise can also be infected by a number of bacteria in the order Chlamydiales, with at least one species, Chlamydia pecorum, posing a significant conservation threat...
January 26, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/27927910/validation-of-various-parasite-detection-tests-for-use-in-the-australian-marsupials-quenda-isoodon-obesulus-and-brushtail-possums-trichosurus-vulpecula
#17
Alison E Hillman, Amanda L Ash, Amanda R Kristancic, Aileen D Elliot, Alan J Lymbery, Ian D Robertson, R C Andrew Thompson
We aimed to validate the use of 1) the modified agglutination test and a polymerase chain reaction (PCR) protocol in detecting Toxoplasma gondii infection in quenda ( Isoodon obesulus) and brushtail possums ( Trichosurus vulpecula); 2) immunofluorescence microscopy of feces and a PCR and sequencing protocol in detecting Giardia spp. infection in quenda; and 3) a fecal flotation protocol in detecting gastrointestinal helminth infections of quenda. Quenda and brushtail possum carcasses, and samples from trapped quenda, were tested with 2 parasite detection tests per parasite, and results were modeled using Bayesian latent class analysis to estimate test sensitivity and specificity...
January 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/27827336/a-new-coccidian-parasite-of-the-boodie-bettongia-lesueur-mammalia-marsupialia-potoroidae-from-australia
#18
Frances Hulst, Leah F Kemp, Jan Slapeta
Four of 28 wild boodies or burrowing bettongs, Bettongia lesueur (Quoy et Gaimard) passed oocysts of species of Eimeria Schneider, 1875. The boodies are surviving on off-shore islands and in large predator-proof sanctuaries on the mainland where they were reintroduced. The boodie is a potoroid marsupial extinct from the mainland of Australia due to predation from red foxes and feral cats. Comparison with other species of the genus Eimeria indicates that the coccidium found represents a new species. Sporulated oocyst of Eimeria burdi sp...
October 20, 2016: Folia Parasitologica
https://www.readbyqxmd.com/read/27769655/microorganisms-in-ticks-acari-ixodidae-collected-on-marsupials-and-rodents-from-santa-catarina-paran%C3%A3-and-mato-grosso-do-sul-states-brazil
#19
Carolina Moreira Blanco, Bernardo Rodrigues Teixeira, Alexandro Guterres da Silva, Renata Carvalho de Oliveira, Liana Strecht, Maria Ogrzewalska, Elba Regina S de Lemos
Information about tick fauna and monitoring of pathogen prevalences in ticks (Acari: Ixodidae) in various habitat types can enhance knowledge about the epidemiology of tick-borne pathogens in Brazil. This work shows the results of a study of tick parasitism of wild rodents and marsupials collected in seven localities in the southern part of Brazil, within Atlantic Forest and Cerrado biomes. A total of 61 ticks were collected from small mammals, and after identification to the species level, the ticks were individually tested for the presence of bacteria of the genera Rickettsia, Borrelia, family Anaplasmataceae, and protozoa of the genus Babesia...
January 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/27692317/lungworm-heterostrongylus-heterostrongylus-travassos-1925-from-the-black-eared-opossum-in-south-america-morphologic-histopathological-and-phylogenetic-aspects
#20
Sócrates Fraga da Costa Neto, Raquel de Oliveira Simões, Éster Maria Mota, Roberto do Val Vilela, Eduardo José Lopes Torres, Helene Santos Barbosa, Rosana Gentile, Arnaldo Maldonado Junior
Nematode parasites of the cardiopulmonary system of livestock and pet animals have been receiving attention due to the pathogenic effects they produce in the course of the infection. However, parasitism in wild animals by metastrongilid nematodes has been neglected, resulting in potential risk to wildlife. Heterostrongylus heterostrongylus is the etiological agent of bronchial pneumonia in the black-eared opossum, Didelphis aurita, a widely distributed marsupial frequently reported to inhabit areas from wild environments to peri-urban spaces...
September 15, 2016: Veterinary Parasitology
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