scholarly journals Trypanosomatids in Small Mammals of an Agroecosystem in Central Brazil: Another Piece in the Puzzle of Parasite Transmission in an Anthropogenic Landscape

Pathogens ◽  
2019 ◽  
Vol 8 (4) ◽  
pp. 190 ◽  
Author(s):  
Brandão ◽  
Xavier ◽  
Carvalhaes ◽  
D’Andrea ◽  
Lemos ◽  
...  
Keyword(s):  
Small Mammals ◽  
Abundant Species ◽  
Brazilian Cerrado ◽  
Fresh Blood ◽  
Wild Mammals ◽  
Central Brazil ◽  
Mammal Fauna ◽  
Leishmania Spp ◽  
Cruzi Infection ◽  
Didelphis Albiventris

We surveyed infection by Trypanosoma spp. and Leishmania spp. in small wild mammals from Cumari, Goiás State aiming to investigate the diversity of trypanosomatid in a modified landscape of the Brazilian Cerrado (and possible infection overlapping with canids from the same area). Blood, skin, spleen, and liver samples were collected for parasitological, serological, and molecular assays. Gracilinanus agilis was the most abundant species (N = 70; 48.6%) and it was the only one with patent parasitemia. Characterization by mini-exon and 18SrDNA targets were achieved in 7/10 hemocultures with positive fresh blood examination, which confirmed the T. cruzi infection by Discrete Typing Units (DTU) TcI in single (N = 2) and mixed infections with other DTUs (N = 5). T. rangeli and T. dionisii were detected in skin fragments from Didelphis albiventris and Oecomys cleberi, respectively. G. agilis were found to be infected by L. braziliensis and L. guyanensis, while Leishmania sp. DNA was detected in the liver of Oligoryzomys nigripes and Calomys expulsus. Subpatent infection by T. cruzi and Leishmania sp. was serologically detected in 15% and 9% of the small mammal fauna, respectively. Small mammals from Cumari are included in T. cruzi and Leshmania spp. transmission cycles, showing a higher diversity of trypanosomatid species and/or genotypes than that observed in canids of the same agroecosystem.

scholarly journals Anti-Leptospira spp. antibodies in wild mammals in the municipality of Monte Mor, São Paulo State, Brazil

2020 ◽  
Vol 41 (6supl2) ◽  
pp. 3465-3472
Author(s):  
André Antonio Cutolo ◽  
◽  
Guido Gomes Wanderley ◽  
Helio Langoni ◽  
Carlos Roberto Teixeira ◽  
...  
Keyword(s):  
Abundant Species ◽  
Domestic Animals ◽  
Antibody Detection ◽  
Leptospira Interrogans ◽  
Myocastor Coypus ◽  
Wild Mammals ◽  
Animal Host ◽  
Paulo State ◽  
Sera Samples ◽  
Didelphis Albiventris

Leptospirosis is a potentially fatal zoonosis caused by Leptospira bacteria. Some animal host species are adapted to specific serovars being potential carriers and environmental dispersers. From 2009 to 2011, 45 wild mammals (39 opossums Didelphis albiventris, four porcupines Sphiggurus villosus, one coypu Myocastor coypus and one capybara Hidrochoerus hidrochaeris) found by citizens in anthropic areas of Monte Mor municipality were captured, restrained and had sera samples collected for Leptospira antibody detection. The samples were titrated by the microagglutination technique (MAT) for different serogroups. A total of 35.56% (16/45) animals were reactive for Leptospira antibodies for 11 different serogroups. The most frequent serovar, among the 12 identified, was Icterohaemorrhagiae (6/16), followed by Gryppotyphosa (4/16) and Pyrogenes (2/16). Didelphis albiventris, the most abundant species in the study, had a prevalence of 35.9% (14/39) for Leptospira antibodies, while S. villosus had 0% (0/4), M. coypus (1/1) and H. hydrochaeris (1/1) 100%. Among the seropositive D. albiventris, 35.71% (5/14) and 28.57% (4/14) seroreacted for Leptospira interrogans species, serogroups Icterohaemorrhagiae and Gryppotyphosa respectively, indicating environmental contamination by these bacteria and the possibility of exposure and infection of humans and domestic animals in the studied area.

scholarly journals Wild and Domestic Canids and Their Interactions in the Transmission Cycles of Trypanosoma Cruzi and Leishmania spp. in an Area of the Brazilian Cerrado

Pathogens ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 818
Author(s):  
Elida M. V. Brandão ◽  
Samanta C. C. Xavier ◽  
Fabiana L. Rocha ◽  
Caio F. M. Lima ◽  
Ísis Z. Candeias ◽  
...  
Keyword(s):  
Trypanosoma Cruzi ◽  
Brazilian Cerrado ◽  
Fresh Blood ◽  
Positive Skin ◽  
Wild Canids ◽  
Leishmania Spp ◽  
Cerdocyon Thous ◽  
Chrysocyon Brachyurus ◽  
Dog Infection ◽  
Low Rate

Trypanosoma cruzi and Leishmania spp. are parasites that infect multiple hosts including canids, considered bioaccumulators of parasites. Deforestation in the Cerrado biome has resulted in the exposure of wild canids to anthropized areas, where they may establish ecological and epidemiological relationships with domestic dogs. We evaluated the infection by trypanosomatids in canids from a Cerrado agroecosystem between 2013 and 2017. Samples of wild canids (blood, bone marrow and skin) and dogs (blood) were collected for parasitological, serological and molecular diagnosis. A total of 414 samples from wild (n = 131) and domestic (n = 283) canids were collected, including recaptures. We obtained five positive hemocultures from Lycalopex vetulus (n = 2), Cerdocyon thous (n = 1) and dogs (n = 2), all characterized as T. cruzi TcIII/V (18S rDNA) and TcIII/V/VI (gGAPDH); one positive skin fragment for Leishmania sp. (C. thous), one positive skin culture (Chrysocyon brachyurus) and one positive fresh blood examination from a dog. Infection by T. cruzi and Leishmania spp. was serologically confirmed in 18% and 4% of the canids, respectively. Active transmission was attested by seroconversion events and occurred despite the low rate of positive parasitological assays. Wild and domestic canids infected by both parasites were detected sharing the same areas, pointing to a possible spillover of parasites among them.

scholarly journals Small mammals of Chapada dos Veadeiros National Park (Cerrado of Central Brazil): ecologic, karyologic, and taxonomic considerations

2005 ◽  
Vol 65 (3) ◽  
pp. 395-406 ◽  
Author(s):  
C. R. Bonvicino ◽  
B. Lemos ◽  
M. Weksler
Keyword(s):  
Small Mammals ◽  
Small Mammal ◽  
Endemic Species ◽  
National Park ◽  
Rodent Species ◽  
Central Brazil ◽  
Mammal Fauna ◽  
Natural Reserve ◽  
High Elevations

This work is based on a survey of small mammals carried out in the Chapada dos Veadeiros National Park, a natural reserve located in the mountains of the Planalto Central Goiano in the Cerrado of Central Brazil. The 227 specimens collected represented six marsupial and 13 rodent species. Taxonomic, karyologic, and ecologic considerations are present and discussed in the present work. Our data reflected the faunal heterogeneity with respect to both elevation and vegetation because only eight of the 19 species were collected at both high and low elevations. The composition of the small mammal fauna of the park is influenced by predominance of forest formations at low elevations and cerrado with rupestrian areas at high elevations. Presence of endemic species and one undescribed demonstrated that the cerrado has an endemic fauna and a little known diversity of small mammals.

Trypanosoma Cruzi Infection and Electrocardiographic Findings among Active Manual Workers. A Population-Based Study in Central Brazil

1990 ◽  
Vol 19 (1) ◽  
pp. 182-186 ◽  
Author(s):  
FABIO ZICKER ◽  
JOAQUIM CAETANO DE ALMEIDA NETTO ◽  
ELAINE MARIA SERONNI ZICKER ◽  
RENATO M OLIVEIRA ◽  
PETER G SMITH
Keyword(s):  
Trypanosoma Cruzi ◽  
Population Based ◽  
Population Based Study ◽  
Central Brazil ◽  
Electrocardiographic Findings ◽  
Cruzi Infection

scholarly journals Microhabitat of small mammals at ground and understorey levels in a deciduous, southern Atlantic Forest

2013 ◽  
Vol 85 (2) ◽  
pp. 727-736 ◽  
Author(s):  
GERUZA L. MELO ◽  
BARBARA MIOTTO ◽  
BRISA PERES ◽  
NILTON C. CACERES
Keyword(s):  
Habitat Selection ◽  
Small Mammals ◽  
Strong Evidence ◽  
Animal Species ◽  
Deciduous Forest ◽  
Distribution Patterns ◽  
Microhabitat Use ◽  
Southern Brazil ◽  
Different Types ◽  
Didelphis Albiventris

Each animal species selects specific microhabitats for protection, foraging, or micro-climate. To understand the distribution patterns of small mammals on the ground and in the understorey, we investigated the use of microhabitats by small mammals in a deciduous forest of southern Brazil. Ten trap stations with seven capture points were used to sample the following microhabitats: liana, fallen log, ground litter, terrestrial ferns, simple-trunk tree, forked tree, and Piper sp. shrubs. Seven field phases were conducted, each for eight consecutive days, from September 2006 through January 2008. Four species of rodents (Akodon montensis, Sooretamys angouya, Oligoryzomys nigripes and Mus musculus) and two species of marsupials (Didelphis albiventris and Gracilinanus microtarsus) were captured. Captured species presented significant differences on their microhabitat use (ANOVA, p = 0.003), particularly between ground and understorey sites. Akodon montensis selected positively terrestrial ferns and trunks, S. angouya selected lianas, D. albiventris selected fallen trunks and Piper sp., and G. microtarsus choose tree trunks and lianas. We demonstrated that the local small-mammal assemblage does select microhabitats, with different types of associations between species and habitats. Besides, there is a strong evidence of habitat selection in order to diminish predation.

Molecular diagnosis of Trypanosoma cruzi/Leishmania spp. coinfection in domestic, peridomestic and wild mammals of Venezuelan co-endemic areas

2018 ◽  
Vol 14 ◽  
pp. 123-130 ◽  
Author(s):  
Mercedes Viettri ◽  
Leidi Herrera ◽  
Cruz M. Aguilar ◽  
Antonio Morocoima ◽  
Jesús Reyes ◽  
...  
Keyword(s):  
Trypanosoma Cruzi ◽  
Molecular Diagnosis ◽  
Wild Mammals ◽  
Leishmania Spp ◽  
Endemic Areas

scholarly journals Prevalence and Distribution of Plague and Tularemia in Small Mammals of Grand Teton National Park

2000 ◽  
Vol 24 ◽  
pp. 34-36
Author(s):  
Asaf Dagan ◽  
Colin Gillin ◽  
Kira Marciniak
Keyword(s):  
Small Mammals ◽  
National Park ◽  
Large Scale ◽  
University Of Wyoming ◽  
Grand Teton National Park ◽  
Wild Mammals ◽  
Bacterial Diseases ◽  
Zoological Society ◽  
Scale Population ◽  
Low Incidence

Sylvatic plague (Yersinia pestis) and tularemia (Francisella tularensis) are infectious bacterial diseases that can be transmitted from wild mammals to humans by insects or through direct contact. Although cases of plague and tularemia have been reported in the southwest, a comprehensive understanding of the prevalence, distribution and dynamics of these diseases is lacking. During the months of June and July 2000 we sampled small mammals in Grand Teton National Park (GTNP) for antibodies of these zoonotic diseases. This survey was conducted in conjunction with a large scale population dynamics study, lead by Dr. Brian Miller, Denver Zoological society, and Dr. Hank Harlow, Department of Zoology and Physiology, University of Wyoming. A published survey of plague and tularemia has not been conducted in GTNP. In 1996, Dr. Fredrick Jannett looked for plague in the genus Microtus and found low incidence

scholarly journals Ectoparasites from small mammals from the Cerrado region in the Minas Gerais state, Brazil

2012 ◽  
Vol 4 (1) ◽  
pp. 21-29
Author(s):  
Danilo Saraiva ◽  
Gislene Da Silva Rocha Fournier ◽  
Sarita Pimenta de Oliveira ◽  
Maria Ogrzewalska ◽  
Edeltrudes Maria Valadares Calaca Camara ◽  
...  
Keyword(s):  
Small Mammals ◽  
Minas Gerais ◽  
Serra Do Cipó ◽  
Tunga Penetrans ◽  
Minas Gerais State ◽  
Didelphis Albiventris

El objetivo del presente estudio fue investigar la prevalencia de infestación de ectoparásitos asociados a mamíferos pequeños del Cerrado en el Parque Nacional Serra do Cipó, Estado de Minas Gerais, Brasil. De abril a septiembre de 2007, capturamos 95 mamíferos pequeños, los cuales representaron nueve especies: seis pertenecen al Orden Rodentia: Cerradomys subflavus (Wagner 1842), Nectomys squamipes (Brants 1827), Thrichomys apereoides (Lund,1939), Rhipidomys mastacalis (Lund 1840), Necromys lasiurus (Lund 1841), Oligoryzomys nigripes Olfers 1818, y tres al Orden Didelphimorphia: Gracilinanus agilis (Burmeister 1854), Marmosops incanus (Lund 1840) y Didelphis albiventris (Lund,1841). Identificamos ectoparásitos de cinco órdenes: Ixodida, Gamasida, Phthiraptera, Siphonaptera y Diptera y varias especies de ectoparasitos como: Amblyomma sp, Laelaps paulistanensis Fonseca 1936, Laelaps differens Fonseca 1936, Laelaps manguinhosi Fonseca 1936, Tur lativentralis (Fonseca 1936), Gigantolaelaps goyanensis Fonseca 1939, Gigantolaelaps vitzthumi Fonseca 1939, Androlaelaps (Haemolaelaps) fahrenholzi (Berleze 1911), Eubrachylaelaps rotundus (Fonseca1936), Mysolaelaps parvispinosus Fonseca 1936, Ctenophthirus cercomydis Ferris1922, Hoplopleura imparata Linardi 1984, Eogyropus lenti lenti Werneck 1936, Tunga penetrans (Linnaeus 1758) y Poligenes tripus (Jordania 1933). Para el parque, son nuevos todos los registros de ectoparásitos y agregamos también algunos hospederos.PALABRAS CLAVEBrasil, Cerrado, Parque Nacional Serra do Cipó, mamíferos, ectoparásitos.

scholarly journals An important site for conservation of bats in Brazil: Passa Três cave, São Domingos karst area, with an updated checklist for Distrito Federal (DF) and Goiás state

2018 ◽  
Vol 28 ◽  
pp. 39-51 ◽  
Author(s):  
Maria Elina Bichuette ◽  
Eliana do Amaral Gimenez ◽  
Ives Simões Arnone ◽  
Eleonora Trajano
Keyword(s):  
Rare Species ◽  
Abundant Species ◽  
Karst Area ◽  
Central Brazil ◽  
Distrito Federal ◽  
Threatened Fauna ◽  
Important Site

A checklist of bats from Distrito Federal (DF) and Goiás state (GO) and, particularly a single cave (Passa Três cave), located in São Domingos karst area (GO), central Brazil, is presented. Data is based on literature and surveys carried out during 2,000 years. In total, 66 species were recorded, with 30 using caves as shelters. Passa Três cave harbors nine Phyllostomidae species; the most abundant species werePlatyrrhinuslineatus, Lonchorhinaaurita,DesmodusrotundusandCarolliaperspicillata; and the less abundantsTrachopscirrhosus,AnouracaudiferandGlossophagasoricina. Besides, the cave is shelter of two threatened bats -Lonchophylladekeyseri(Endangered category) andLonchorhinaaurita(Vulnerable category), included at Brazilian List of Threatened Fauna, and of a rare species,Lionycterisspurrelli. Passa Três cave shows enough attributes to be considered as a SICOM (Sites of Importance for Conservation of Bats), which would ensure its protection.

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