Fauna flebotomínica (Diptera: Psychodidae) em floresta preservada e alterada do Município de Caroebe, Estado de Roraima, Brasil

Neto, Jaime de Liege Gama; Baima, Janderson Melo; Freitas, Rui Alves de; Passos, Mahedy Araujo Bastos

doi:10.5123/s2176-62232012000200006

Cited by 5 publications

(1 citation statement)

References 6 publications

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“…Our findings suggests that this species may be circulating and causing the disease in all municipalities in the State, as it was identified in at least one municipality of each micro-region. This assumption is supported by a previous study on phlebotomine fauna in the municipality of Caroebe [ 24 ] in the southern part of the state where Lutzomyia davisi was the most abundant species in the primary forest. This sand fly species has been found naturally infected with L. (V.) braziliensis in several locations in the Brazilian Amazon [ 25 ].…”

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confidence: 70%

Diagnosis and identification of Leishmania species in patients with cutaneous leishmaniasis in the state of Roraima, Brazil's Amazon Region

et al. 2021

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Background Cutaneous leishmaniasis (CL) is an endemic disease in Brazil that is highly prevalent in the northern region of the country. Although there is a continuous and growing number of cases registered in the state of Roraima, there is limited information regarding the species of Leishmania that affect the human population. In this study, we aimed to characterize which Leishmania species cause human disease in those presenting with cutaneous leishmaniasis in endemic areas of the State of Roraima. Methods We conducted a prospective surveillance study between 2016 to 2018 in health centers located in the State of Roraima, Brazil. Participants with clinical suspicion of CL were enrolled and provided lesion samples for parasitological detection by microscopy. A subset of the samples was tested by polymerase chain reaction and sequencing of the internal transcribed spacer 1 (ITS-1 PCR) for molecular species identification. Results A total of 262 participants were enrolled in this study. Of those, 129 (49.27%) were positive by parasitological examination. Most positive subjects (81.58%) were male, and most cases presented a single lesion (80.26%). ITS-1 PCR and sequencing on a subset of 76 samples allowed us to detect nine different species of Leishmania: L. (V.) braziliensis, L (V.) panamensis, L. (V.) guyanensis, L. (V.) naiffi, L. (V.) shawi, L.(V.) utingensis, L. (V.) lindenbergi, L. (L.) amazonensis and L. (L.) mexicana. Conclusions Our study provides the first assessment of circulating species of Leishmania in the State of Roraima, Brazil, and shows the high diversity in this region. This study opens the path for further research on the transmission of leishmaniasis in the northernmost Brazilian State including vector and reservoir surveillance as well as for intensification of investigation and control activities against CL in the region.

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Section: Discussionsupporting

confidence: 70%

Diagnosis and identification of Leishmania species in patients with cutaneous leishmaniasis in the state of Roraima, Brazil's Amazon Region

et al. 2021

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Identification of Bloodmeals from Sand Flies (Diptera: Psychodidae) Collected in the Parque Nacional do Viruá, State of Roraima, Brazil

Rodrigues¹,

Costa

Shimabukuro

2021

Journal of Medical Entomology

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The transmission of pathogens that cause leishmaniases occurs by the bite of female sand flies (Diptera: Psychodidae) in their vertebrate hosts, which makes the identification of their bloodmeal sources an important step for the control and epidemiology of these diseases. In Brazil, the state of Roraima has a great diversity of sand flies, vertebrate hosts, and protozoan Leishmania, but little is known about the host blood-feeding preferences of sand flies. Thus, we evaluated the bloodmeal sources of sand flies collected from their sylvatic habitats in Parque Nacional do Viruá, Roraima. Fieldwork was carried-out between 13th and 18th August 2019 using CDC light traps. Sand flies were slide-mounted and morphologically identified using the head and last segments of the abdomen. Engorged females had their DNA extracted, followed by amplification and sequencing of the cytochrome b (cytb) molecular marker for vertebrates. Sequences were analyzed and compared with those from GenBank using the BLASTn search tool, in addition to the reconstruction of a phylogenetic tree to demonstrate the clustering pattern of these sequences. A total of 1,209 sand flies were identified, comprising 20 species, in which the most abundant were Psychodopygus ayrozai (Barretto and Coutinho) (42.10%) and Psychodopygus chagasi (Costa Lima) (26.22%). Bloodmeal source identification was successfully performed for 34 sand flies, that confirm four vertebrate species, being the most abundant the armadillo Dasypus novemcinctus Linnaeus, 1758 (Cingulata: Dasypodidae).

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On the Synonyms ofPsathyromyia(Psathyromyia)shannoni(Dyar, 1929) andPa. bigeniculata(Floch & Abonnenc, 1941) and the Resuscitation ofPa. pifanoi(Ortiz, 1972) With the Description of Its Female (Diptera: Psychodidae: Phlebotominae)

et al. 2016

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Psathyromyia shannoni until recently presented several taxa: Phlebotomus limai, Ph. bigeniculatus, Ph. pifanoi, and Ph. microcephalus as its junior synonyms. In a previous study, the two former synonyms were resurrected and here a revision based on morphological characters of the taxonomic status of Ph. microcephalus and Ph. pifanoi is presented. Psathyromyia pifanoi STAT REV; COMB N: is resurrected from the synonymy of Pa. shannoni and its female is described. Phlebotomus microcephalus is removed from the synonymy of Pa. shannoni and proposed as a new synonym of Pa. bigeniculata Lutzomyia cuzquena SYN N: , occurring in the Amazon region, is designated as a junior synonym of Pa. pifanoi The geographical distributions of Pa shannoni, Pa. bigeniculata, and Pa. pifanoi in the Americas are presented.

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Fauna flebotomínica (Diptera: Psychodidae) em floresta preservada e alterada do Município de Caroebe, Estado de Roraima, Brasil

Cited by 5 publications

References 6 publications

Diagnosis and identification of Leishmania species in patients with cutaneous leishmaniasis in the state of Roraima, Brazil's Amazon Region

Diagnosis and identification of Leishmania species in patients with cutaneous leishmaniasis in the state of Roraima, Brazil's Amazon Region

Identification of Bloodmeals from Sand Flies (Diptera: Psychodidae) Collected in the Parque Nacional do Viruá, State of Roraima, Brazil

On the Synonyms ofPsathyromyia(Psathyromyia)shannoni(Dyar, 1929) andPa. bigeniculata(Floch & Abonnenc, 1941) and the Resuscitation ofPa. pifanoi(Ortiz, 1972) With the Description of Its Female (Diptera: Psychodidae: Phlebotominae)

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