On Simulium (Pternaspatha), with description of a new species (Diptera-Simuliidae)

Coscarón, Sixto; Coscarón-Arias, CL

doi:10.1590/s0074-02761996000600009

Cited by 5 publications

(5 citation statements)

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“…For example, specimens identified as Cnesia dissimilis and C. near pussilla clustered together, and also Cnesia ornata, all supported with high bootstrap values. This is not surprising as these species are morphologically similar (Coscarón 1991;Coscarón-Arias 1989Wygodzinsky and Coscarón 1973). Cnesia pussilla was described by Wygodzinsky and Coscarón (1973) from two reared females, two reared males, and undisclosed number of pupae and larvae, from Rio Negro and Neuquén provinces.…”

Section: Resultsmentioning

confidence: 83%

“…In Argentina, Simuliidae are well characterised mainly due to the efforts of Coscarón (1987;1991), Coscarón and Coscarón-Arias (1989;2002), Coscarón and Wygodzinsky (1972) and Wygodzinsky and Coscarón (1973;1989) (reviewed in Hernández et al 2009), while the monographs of Dumbleton (1963Dumbleton ( , 1973, Mackerras and Mackerras (1948) and Tonnoir (1925) on the Australian Simuliidae fauna and the genus Austrosimulium Tonnoir, are still pivotal in our understanding of the zoogeographical relationships of south-western Pacific simuliid fauna. Molecular investigation of Simuliidae taxonomy in the Austral Region has been sporadic, although Moulton (1997Moulton ( , 2000Moulton ( , 2003 explored relationships within the family, and further information have been provided by Adler et al (2004).…”

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confidence: 99%

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DNA barcoding as an aid for species identification in austral black flies (Insecta: Diptera: Simuliidae)

Hernández‐Triana

de²,

Prosser

et al. 2017

Genome

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In this paper, the utility of a partial sequence of the COI gene, the DNA barcoding region, for the identification of species of black flies in the austral region was assessed. Twenty-eight morphospecies were analyzed: eight of the genus Austrosimulium (four species in the subgenus Austrosimulium s. str., three species in the subgenus Novaustrosimulium, and one species unassigned to subgenus), two of the genus Cnesia, eight of Gigantodax, three of Paracnephia, one of Paraustrosimulium, and six of Simulium (subgenera Morops, Nevermannia, and Pternaspatha). The neighbour-joining tree derived from the DNA barcode sequences grouped most specimens according to species or species groups recognized by morphotaxonomic studies. Intraspecific sequence divergences within morphologically distinct species ranged from 0% to 1.8%, while higher divergences (2%–4.2%) in certain species suggested the presence of cryptic diversity. The existence of well-defined groups within S. simile revealed the likely inclusion of cryptic diversity. DNA barcodes also showed that specimens identified as C. dissimilis, C. nr. pussilla, and C. ornata might be conspecific, suggesting possible synonymy. DNA barcoding combined with a sound morphotaxonomic framework would provide an effective approach for the identification of black flies in the region.

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Section: Resultsmentioning

confidence: 83%

mentioning

confidence: 99%

DNA barcoding as an aid for species identification in austral black flies (Insecta: Diptera: Simuliidae)

Hernández‐Triana

de²,

Prosser

et al. 2017

Genome

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“…It is also important here to clear the taxonomic status of these species, mainly because S. nigrimanum shares the same geographic distribution as S. guianense , except for S. nigrimanum absence within the Amazon region. Currently, some authors [134] group both species into the Trichodagmia subgenus of Simulium , while--based on phylogenetic analysis--others have determined [135] that S. guianense belong to a different subgenus, Thyrsopelma , and elevated the subgenus to genus (thus Trichodagmia nigrimanum and Thyrsopelma guianense , which are cited in this work as S. nigrimanum and S. guianense , respectively).…”

Section: Discussionmentioning

confidence: 99%

An insight into the sialome of Simulium guianense (DIPTERA:SIMulIIDAE), the main vector of River Blindness Disease in Brazil

et al. 2011

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BackgroundLittle is known about the composition and function of the saliva in black flies such as Simulium guianense, the main vector of river blindness disease in Brazil. The complex salivary potion of hematophagous arthropods counteracts their host's hemostasis, inflammation, and immunity.ResultsTranscriptome analysis revealed ubiquitous salivary protein families--such as the Antigen-5, Yellow, Kunitz domain, and serine proteases--in the S. guianense sialotranscriptome. Insect-specific families were also found. About 63.4% of all secreted products revealed protein families found only in Simulium. Additionally, we found a novel peptide similar to kunitoxin with a structure distantly related to serine protease inhibitors. This study revealed a relative increase of transcripts of the SVEP protein family when compared with Simulium vittatum and S. nigrimanum sialotranscriptomes. We were able to extract coding sequences from 164 proteins associated with blood and sugar feeding, the majority of which were confirmed by proteome analysis.ConclusionsOur results contribute to understanding the role of Simulium saliva in transmission of Onchocerca volvulus and evolution of salivary proteins in black flies. It also consists of a platform for mining novel anti-hemostatic compounds, vaccine candidates against filariasis, and immuno-epidemiologic markers of vector exposure.

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“…We note, however, that the current concept [15] of the S . orbitale group includes taxa at one time contained in two separate subgenera, Thyrsopelma and Grenieriella [38]. …”

Section: Discussionmentioning

confidence: 99%

River-specific macrogenomic diversity in Simulium guianense s. l. (Diptera: Simuliidae), a complex of tropical American vectors associated with human onchocerciasis

et al. 2017

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Simulium guianense Wise is a Latin American vector complex of black flies associated with transmission of the causal agent of human onchocerciasis (river blindness). An analysis of the chromosomal banding patterns of 607 larvae of S. guianense s. l. revealed a high level of variation involving 83 macrogenomic rearrangements across 25 populations in Brazil, French Guiana, and Venezuela. The 25 populations were assigned to 13 cytoforms (A1, A2, B1–B4, C, D, E1–E4, and F), some of which are probably valid species. Based on geographical proximity, a member of the B group of cytoforms probably represents the name-bearing type specimen of S. guianense and the primary vector in the last-remaining onchocerciasis foci in the Western Hemisphere. Cytoform B3 in Amapá State is implicated as an anthropophilic simuliid in an area currently and historically free of onchocerciasis. Distributions of cytoforms are associated with geography, elevation, and drainage basin, and are largely congruent with ecoregions. Despite extraordinarily large larval populations of S. guianense s. l. in big rivers and consequent production of female flies for dispersal, the cytoforms maintain their chromosomal distinction within individual rivers, suggesting a high degree of fidelity to the specialized breeding habitats—rocky shoals—of the natal rivers.

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On Simulium (Pternaspatha), with description of a new species (Diptera-Simuliidae)

Abstract: Simulium (Pternaspatha) diamantinum n. sp. is described from females, males, pupae and larvae, collected at Mendoza, San Juan and Neuquén. Some specimens of this species from Laguna del Diamante were included before by Wygodzinsky and Coscarón (1967)

Cited by 5 publications

References 1 publication

DNA barcoding as an aid for species identification in austral black flies (Insecta: Diptera: Simuliidae)

DNA barcoding as an aid for species identification in austral black flies (Insecta: Diptera: Simuliidae)

An insight into the sialome of Simulium guianense (DIPTERA:SIMulIIDAE), the main vector of River Blindness Disease in Brazil

River-specific macrogenomic diversity in Simulium guianense s. l. (Diptera: Simuliidae), a complex of tropical American vectors associated with human onchocerciasis

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