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Systematics of Lepidocyrtinusboneti Denis, 1948 (Collembola, Seirinae) reveals a new position for the species within Seirinae.

ABSTRACT: Seiraboneti Denis, 1948, comb. nov. is examined and redescribed based on syntypes and by a newly discovered Chinese population. Lectotype and paralectotypes were designated, and the type locality of the species has been fixed to Câuda, near Nhatrang, Vietnam. The species was first described in the genus Lepidocyrtinus, but based on morphological and molecular evidence it is here transferred to Seira. For the phylogenetic placement of Seiraboneticomb. nov., its mitogenome was included in a dataset comprising 19 species of Seirinae. Maximum Likelihood and Bayesian inferences clustered the species next to Seirasanloemensis Godeiro & Cipola, 2020 from Cambodia, forming a distinct Seira clade from the Old World, confirming the hypothesis of the existence of a different basal lineage of Seirinae in Southern Asia.

SUBMITTER: Godeiro NN

PROVIDER: S-EPMC10193586 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature

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Systematics of Lepidocyrtinusboneti Denis, 1948 (Collembola, Seirinae) reveals a new position for the species within Seirinae.

Godeiro Nerivania Nunes NN Bu Yun Y Nilsai Areeruk A Deharveng Louis L Cipola Nikolas Gioia NG

ZooKeys 20230307

Seiraboneti Denis, 1948, comb. nov. is examined and redescribed based on syntypes and by a newly discovered Chinese population. Lectotype and paralectotypes were designated, and the type locality of the species has been fixed to Câuda, near Nhatrang, Vietnam. The species was first described in the genus Lepidocyrtinus, but based on morphological and molecular evidence it is here transferred to Seira. For the phylogenetic placement of Seiraboneticomb. nov.</b ...[more]

PMID: 37214741

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Project description:BackgroundRhodnius montenegrensis (Triatominae), a potential vector of Chagas disease, was described after R. robustus-like bugs from southwestern Amazonia. Mitochondrial cytb sequence near-identity with sympatric R. robustus (genotype II) raised doubts about the taxonomic status of R. montenegrensis, but comparative studies have reported fairly clear morphological and genetic differences between R. montenegrensis and laboratory stocks identified as R. robustus. Here, we use a transcriptome-based approach to investigate this apparent paradox.ResultsWe retrieved publicly-available transcriptome sequence-reads from R. montenegrensis and from the R. robustus stocks used as the taxonomic benchmark in comparative studies. We (i) aligned transcriptome sequence-reads to mitochondrial (cytb) and nuclear (ITS2, D2-28S and AmpG) query sequences (47 overall) from members of the R. prolixus-R. robustus cryptic-species complex and related taxa; (ii) computed breadth- and depth-coverage for the 259 consensus sequences generated by these alignments; and, for each locus, (iii) appraised query sequences and full-breadth-coverage consensus sequences in terms of nucleotide-sequence polymorphism and phylogenetic relations. We found evidence confirming that R. montenegrensis and R. robustus genotype II are genetically indistinguishable and, hence, implying that they are, in all likelihood, the same species. Furthermore, we found compelling genetic evidence that the benchmark 'R. robustus' stocks used in R. montenegrensis description and in later transcriptome-based comparisons are in fact R. prolixus, although likely mixed to some degree with R. robustus (probably genotype II, a.k.a. R. montenegrensis).ConclusionsWe illustrate how public-domain genetic/transcriptomic data can help address challenging issues in disease-vector systematics. In our case-study, taxonomic confusion apparently stemmed from the misinterpretation of sequence-data analyses and misidentification of taxonomic-benchmark stocks. More generally, and together with previous reports of mixed and/or misidentified Rhodnius spp. laboratory colonies, our results call into question the conclusions of many studies (on morphology, genetics, physiology, behavior, bionomics or interactions with microorganisms including trypanosomes) based on non-genotyped 'R. prolixus' or 'R. robustus' stocks. Correct species identification is a prerequisite for investigating the factors that underlie the physiological, behavioral or ecological differences between primary domestic vectors of Chagas disease, such as R. prolixus, and their sylvatic, medically less-relevant relatives such as R. robustus (s.l.) including R. montenegrensis.

Dataset Information

Systematics of Lepidocyrtinusboneti Denis, 1948 (Collembola, Seirinae) reveals a new position for the species within Seirinae.

Publications

Systematics of <i>Lepidocyrtinusboneti</i> Denis, 1948 (Collembola, Seirinae) reveals a new position for the species within Seirinae.

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Dataset Information

Systematics of Lepidocyrtinusboneti Denis, 1948 (Collembola, Seirinae) reveals a new position for the species within Seirinae.

Publications

﻿Systematics of <i>Lepidocyrtinusboneti</i> Denis, 1948 (Collembola, Seirinae) reveals a new position for the species within Seirinae.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets

Systematics of <i>Lepidocyrtinusboneti</i> Denis, 1948 (Collembola, Seirinae) reveals a new position for the species within Seirinae.