Dataset Information

Description of Dichelacera (Dichelacera) lamasi n. sp. (Diptera: Tabanidae), a new species from the state of Mato Grosso do Sul, Brazil.

ABSTRACT:

Background

The genus Dichelacera is widely distributed in the Neotropical region. The nominal subgenus is the most diverse with 67 species and one subspecies.

New information

We described Dichelacera lamasi n. sp., the 68th species of nominal subgenus, based on a female from Mato Grosso do Sul state, Brazil. Diagnosis, discussion and illustrations are also provided.

SUBMITTER: Penaforte FL

PROVIDER: S-EPMC6923260 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature

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Publications

Description of Dichelacera (Dichelacera) lamasi n. sp. (Diptera: Tabanidae), a new species from the state of Mato Grosso do Sul, Brazil.

Penaforte Fernanda Lg FL Henriques Augusto L AL

Biodiversity data journal 20191212

<h4>Background</h4>The genus <i>Dichelacera</i> is widely distributed in the Neotropical region. The nominal subgenus is the most diverse with 67 species and one subspecies.<h4>New information</h4>We described <i>Dichelacera lamasi</i> n. sp., the 68th species of nominal subgenus, based on a female from Mato Grosso do Sul state, Brazil. Diagnosis, discussion and illustrations are also provided. ...[more]

PMID: 31871406

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Project description:BackgroundThe COVID-19 pandemic had a major impact on indigenous populations. Understanding the viral dynamics within this population is essential to create targeted protection measures.MethodsA total of 204 SARS-CoV-2 positive samples collected between May 2020 and November 2021 from an indigenous area in Mato Grosso do Sul (MS), Midwestern Brazil, were screened. Samples were submitted to whole genome sequencing using the Nanopore sequencing platform. Clinical, demographic, and phylogenetic data were analyzed.ResultsWe found the co-circulation of six main SARS-CoV-2 lineages in the indigenous population, with the Zeta lineage being the most prevalent (27.66%), followed by B.1.1 (an ancestral strain) (20.21%), Gamma (14.36%) and Delta (13.83%). Other lineages represent 45.74% of the total. Our phylogenetic reconstruction indicates that multiple introduction events of different SARS-CoV-2 lineages occurred in the indigenous villages in MS. The estimated indigenous population mortality rate was 1.47%. Regarding the ethnicity of our cohort, 64.82% belong to the Guarani ethnicity, while 33.16% belong to the Terena ethnicity, with a slightly higher prevalence of males (53.43%) among females. Other ethnicities represent 2.01%. We also observed that almost all patients (89.55%) presented signs and symptoms related to COVID-19, being the most prevalent cough, fever, sore throat, and headache.DiscussionOur results revealed that multiple independent SARS-CoV-2 introduction events had occurred through time, probably due to indigenous mobility, since the villages studied here are close to urban areas in MS. The mortality rate was slightly below of the estimation for the state in the period studied, which we believe could be related to the small number of samples evaluated, the underreporting of cases and deaths among this population, and the inconsistency of secondary data available for this study.ConclusionIn this study, we showed the circulation of multiple SARS-CoV-2 variants in this population, which should be isolated and protected as they belong to the most fragile group due to their socioeconomic and cultural disparities. We reinforce the need for constant genomic surveillance to monitor and prevent the spread of new emerging viruses and to better understand the viral dynamics in these populations, making it possible to direct specific actions.

Dataset Information

Description of Dichelacera (Dichelacera) lamasi n. sp. (Diptera: Tabanidae), a new species from the state of Mato Grosso do Sul, Brazil.

Background

New information

Publications

Description of Dichelacera (Dichelacera) lamasi n. sp. (Diptera: Tabanidae), a new species from the state of Mato Grosso do Sul, Brazil.

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