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Rodrigues BL, da Silva Costa G, Godoy RE, Pereira Júnior AM, Cella W, Ferreira GEM, de Medeiros JF, Shimabukuro PHF. Molecular and morphometric study of Brazilian populations of Psychodopygus davisi. MEDICAL AND VETERINARY ENTOMOLOGY 2024; 38:83-98. [PMID: 37867259 DOI: 10.1111/mve.12701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 10/06/2023] [Indexed: 10/24/2023]
Abstract
In this study, we analysed the molecular and morphometric differences of several populations of the putative sand fly vector Psychodopygus davisi (Root, 1934) (Diptera, Psychodidae, Phlebotominae) in Brazil. We amplified the 658 base pair fragments of the DNA barcoding region-cytochrome c oxidase subunit 1 (COI) gene-for 57 specimens of P. davisi and three specimens of Psychodopygus claustrei (Abonnenc, Léger & Fauran, 1979). We merged our data with public sequences of the same species available from GenBank. Then, the combined dataset-87 sequences and 20 localities-was analysed using population structure analysis and different species delimitation approaches. Geometric morphometry of wings was performed for 155 specimens of P. davisi populations from the North, Midwest and Southeast Brazilian regions, analysing the differences in centroid sizes and canonical variates. Molecular analysis indicated high intraspecific genetic distance values for P. davisi (maximum p distance = 5.52%). All algorithms identified P. davisi and P. claustrei as distinct molecular taxonomic units, despite the low interspecific distance (p distance to the nearest neighbour = 4.79%). P. davisi sequences were split into four genetic clusters by population structure analysis and at least five genetic lineages using intermediate scenarios of the species delimitation algorithms. The species validation analysis of BPP strongly supported the five-species model in our dataset. We found high genetic diversity in this taxon, which is in agreement with its wide geographic distribution in Brazil. Furthermore, the wing analysis showed that specimens from the Southeast Region of Brazil are different from those in the North and the Midwest. The evolutionary patterns of P. davisi populations in Brazil suggest the presence of candidate species, which need to be validated in future studies using a more comprehensive approach with both genomic data and morphological characters.
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Affiliation(s)
- Bruno Leite Rodrigues
- Programa de Pós-Graduação em Saúde Pública, Faculdade de Saúde Pública da Universidade de São Paulo (FSP/USP), São Paulo, Brazil
| | - Glaucilene da Silva Costa
- Programa de Pós-Graduação em Biologia Experimental, Fundação Universidade Federal de Rondônia, Porto Velho, Brazil
- Laboratório Central de Saúde Pública do Estado de Rondônia, LACEN-RO, Porto Velho, Brazil
| | | | | | - Wilsandrei Cella
- Programa de Pós Graduação em Ciência Animal com Ênfase em Produtos Bioativos, Universidade Paranaense, Paraná, Brazil
- Universidade do Estado do Amazonas (UEA), Tefé, Brazil
| | - Gabriel Eduardo Melim Ferreira
- Programa de Pós-Graduação em Biologia Experimental, Fundação Universidade Federal de Rondônia, Porto Velho, Brazil
- Laboratório de Epidemiologia Genética, Fiocruz Rondônia, Porto Velho, Brazil
| | - Jansen Fernandes de Medeiros
- Programa de Pós-Graduação em Biologia Experimental, Fundação Universidade Federal de Rondônia, Porto Velho, Brazil
- Laboratório de Entomologia, Fiocruz Rondônia, Porto Velho, Brazil
| | - Paloma Helena Fernandes Shimabukuro
- Grupo de Estudos em Leishmanioses, Instituto René Rachou, Fiocruz Minas, Belo Horizonte, Brazil
- Coleção de Flebotomíneos (Fiocruz/COLFLEB), Instituto René Rachou, Fiocruz Minas, Belo Horizonte, Brazil
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Rodrigues BL, Galati EAB. Molecular taxonomy of phlebotomine sand flies (Diptera, Psychodidae) with emphasis on DNA barcoding: A review. Acta Trop 2023; 238:106778. [PMID: 36435214 DOI: 10.1016/j.actatropica.2022.106778] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/21/2022] [Accepted: 11/22/2022] [Indexed: 11/25/2022]
Abstract
The taxonomy and systematics of sand flies (Diptera, Psychodidae, Phlebotominae) are one of the pillars of research aimed to identifying vector populations and the agents transmitted by these insects. Traditionally, the use of morphological traits has been the main line of evidence for the definition of species, but the use of DNA sequences is useful as an integrative approach for their delimitation. Here, we discuss the current status of the molecular taxonomy of sand flies, including their most sequenced molecular markers and the main results. Only about 37% of all sand fly species have been processed for any molecular marker and are publicly available in the NCBI GenBank or BOLD Systems databases. The genera Phlebotomus, Nyssomyia, Psathyromyia and Psychodopygus are well-sampled, accounting for more than 56% of their sequenced species. However, less than 34% of the species of Sergentomyia, Lutzomyia, Trichopygomyia and Trichophoromyia have been sampled, representing a major gap in the knowledge of these groups. The most sequenced molecular markers are those within mtDNA, especially the DNA barcoding fragment of the cytochrome c oxidase subunit I (coi) gene, which has shown promising results in detecting cryptic diversity within species. Few sequences of conserved genes have been generated, which hampers higher-level phylogenetic inferences. We argue that sand fly species should be sequenced for at least the coi DNA barcoding marker, but multiple markers with different mutation rates should be assessed, whenever possible, to generate multilocus analysis.
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Affiliation(s)
- Bruno Leite Rodrigues
- Programa de Pós-Graduação em Saúde Pública, Faculdade de Saúde Pública da Universidade de São Paulo (FSP/USP). Av. Dr. Arnaldo, 715 - Cerqueira César, São Paulo SP, Brazil, 01246-904.
| | - Eunice Aparecida Bianchi Galati
- Programa de Pós-Graduação em Saúde Pública, Faculdade de Saúde Pública da Universidade de São Paulo (FSP/USP). Av. Dr. Arnaldo, 715 - Cerqueira César, São Paulo SP, Brazil, 01246-904
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Sousa-Paula LCD, Pessoa FAC, Otranto D, Dantas-Torres F. Beyond taxonomy: species complexes in New World phlebotomine sand flies. MEDICAL AND VETERINARY ENTOMOLOGY 2021; 35:267-283. [PMID: 33480064 DOI: 10.1111/mve.12510] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 12/21/2020] [Accepted: 01/06/2021] [Indexed: 06/12/2023]
Abstract
A species complex (= species group, species series) is an assemblage of species, which are related morphologically and phylogenetically. Recent research has revealed several arthropod vector species that were believed to be a single nominal species actually representing a group of closely related species, which are sometimes morphologically indistinguishable at one or more developmental stages. In some instances, differences in terms of vector competence, capacity, or both have been recorded. It highlights the importance of detecting and studying species complexes to improve our understanding of pathogen transmission patterns, which may be vectored more or less efficiently by different species within the complex. Considering more than 540 species, about one-third of the phlebotomine sand flies in the New World present males and/or females morphologically indistinguishable to one or more species. Remarkably, several of these species may act in transmission of pathogenic agents. In this article, we review recent research on species complexes in phlebotomine sand flies from the Americas. Possible practical implications of recently acquired knowledge and future research needs are also discussed.
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Affiliation(s)
- L C de Sousa-Paula
- Laboratory of Immunoparasitology, Department of Immunology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation (FIOCRUZ), Recife, Pernambuco, Brazil
| | - F A C Pessoa
- Laboratório de Ecologia e Doenças Transmissíveis na Amazônia, Leônidas e Maria Deane Institute, Oswaldo Cruz Foundation (FIOCRUZ), Manaus, Amazonas, Brazil
| | - D Otranto
- Parasitology Unit, Department of Veterinary Medicine, University of Bari, Valenzano, Italy
| | - F Dantas-Torres
- Laboratory of Immunoparasitology, Department of Immunology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation (FIOCRUZ), Recife, Pernambuco, Brazil
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Multiple evolutionary lineages for the main vector of Leishmania guyanensis, Lutzomyia umbratilis (Diptera: Psychodidae), in the Brazilian Amazon. Sci Rep 2021; 11:15323. [PMID: 34321495 PMCID: PMC8319306 DOI: 10.1038/s41598-021-93072-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 06/21/2021] [Indexed: 02/07/2023] Open
Abstract
Lutzomyia umbratilis is the main vector of Leishmania guyanensis in the Brazilian Amazon and in neighboring countries. Previous biological and molecular investigations have revealed significant differences between L. umbratilis populations from the central Brazilian Amazon region. Here, a phylogeographic survey of L. umbratilis populations collected from nine localities in the Brazilian Amazon was conducted using two mitochondrial genes. Statistical analyses focused on population genetics, phylogenetic relationships and species delimitations. COI genetic diversity was very high, whereas Cytb diversity was moderate. COI genealogical haplotypes, population structure and phylogenetic analyses identified a deep genetic differentiation and three main genetic groups. Cytb showed a shallower genetic structure, two main haplogroups and poorly resolved phylogenetic trees. These findings, allied to absence of isolation by distance, support the hypothesis that the Amazon and Negro Rivers and interfluves are the main evolutionary forces driving L. umbratilis diversification. The main three genetic groups observed represent three evolutionary lineages, possibly species. The first lineage occurs north of the Amazon River and east of Negro River, where Le. guyanensis transmission is intense, implying that L. umbratilis is an important vector there. The second lineage is in the interfluve between north of Amazon River and west of Negro River, an area reported to be free of Le. guyanensis transmission. The third lineage, first recorded in this study, is in the interfluve between south of Amazonas River and west of Madeira River, and its involvement in the transmission of this parasite remains to be elucidated.
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Rêgo FD, Soares RP. Lutzomyia longipalpis: an update on this sand fly vector. AN ACAD BRAS CIENC 2021; 93:e20200254. [PMID: 33950136 DOI: 10.1590/0001-37652021xxxx] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 05/17/2020] [Indexed: 12/13/2022] Open
Abstract
Lutzomyia longipalpis is the most important vector of Leishmania infantum, the etiological agent of visceral leishmaniasis (VL) in the New World. It is a permissive vector susceptible to infection with several Leishmania species. One of the advantages that favors the study of this sand fly is the possibility of colonization in the laboratory. For this reason, several researchers around the world use this species as a model for different subjects including biology, insecticides testing, host-parasite interaction, physiology, genetics, proteomics, molecular biology, and saliva among others. In 2003, we published our first review (Soares & Turco 2003) on this vector covering several aspects of Lu. longipalpis. This current review summarizes what has been published between 2003-2020. During this period, modern approaches were incorporated following the development of more advanced and sensitive techniques to assess this sand fly.
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Affiliation(s)
- Felipe D Rêgo
- Fundação Oswaldo Cruz (FIOCRUZ/MG), Instituto René Rachou, Avenida Augusto de Lima, 1715, Barro Preto, 30180-104 Belo Horizonte, MG, Brazil
| | - Rodrigo Pedro Soares
- Fundação Oswaldo Cruz (FIOCRUZ/MG), Instituto René Rachou, Avenida Augusto de Lima, 1715, Barro Preto, 30180-104 Belo Horizonte, MG, Brazil
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RÊGO FELIPED, SOARES RODRIGOPEDRO. Lutzomyia longipalpis: an update on this sand fly vector. AN ACAD BRAS CIENC 2021. [DOI: 10.1590/0001-3765202120200254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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Rodrigues MGDA, Sousa JDDB, Dias ÁLB, Monteiro WM, Sampaio VDS. The role of deforestation on American cutaneous leishmaniasis incidence: spatial-temporal distribution, environmental and socioeconomic factors associated in the Brazilian Amazon. Trop Med Int Health 2019; 24:348-355. [PMID: 30578585 DOI: 10.1111/tmi.13196] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To analyse the temporal and spatial distribution as well as the environmental and socioeconomic factors associated with cutaneous leishmaniasis incidence in the state of Amazonas, Brazil from 2007 to 2015. METHODS Spatial and temporal distribution was evaluated from sequential thematic maps of the mean incidence rates of the disease. A negative binomial regression analysis was performed to evaluate the association of the factors studied with the mean incidence rate of ACL. RESULTS The average proportion of deforestation was negatively associated with the average incidence rate of cutaneous leishmaniasis in municipalities (β = -2.178; P = 0.019; 95%CI -3.996, -0.361), and the health system performance index (effectiveness) (β = -0.852; P = 0.008; 95%CI -1.481, -0.225). Conversely, the municipal human development index (MHDI) was a factor positively related to the average incidence among the municipalities (β = 7.728; P = 0.003; 95%CI 2.716, 12.738). CONCLUSION Our study shows the important impact of socioeconomic and environmental factors on ACL incidence in the Amazonas State.
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Affiliation(s)
- Maria Gabriela de Almeida Rodrigues
- Sala de Análise de Situação em Saúde, Fundação de Vigilância em Saúde do Amazonas, Manaus, Brazil.,Programa de Pós-graduação em Medicina Tropical, Universidade do Estado do Amazonas, Manaus, Brazil
| | | | | | - Wuelton Marcelo Monteiro
- Programa de Pós-graduação em Medicina Tropical, Universidade do Estado do Amazonas, Manaus, Brazil.,Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, Brazil
| | - Vanderson de Souza Sampaio
- Sala de Análise de Situação em Saúde, Fundação de Vigilância em Saúde do Amazonas, Manaus, Brazil.,Programa de Pós-graduação em Medicina Tropical, Universidade do Estado do Amazonas, Manaus, Brazil
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