Do<i>cytochrome c oxidase 1</i>Gene Sequences Differentiate Species of Spirostreptid Millipedes (Diplopoda: Spirostreptida: Spirostreptidae)?

Mwabvu, Tarombera; Lamb, Jennifer; Slotow, Rob; Hamer, Michelle; Barraclough, David A.

doi:10.5733/afin.056.0311

Cited by 10 publications

(9 citation statements)

References 39 publications

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“…Although our relatively small taxon sampling, the phylogenetic analysis strongly recovers Sechelleptus as monophyletic and discriminates at least two or three different groups. Furthermore, the mean inter-specific distance values (14.9% for COI and 5.1% for 16S) were remarkably similar to previous studies that reported the presence of high genetic divergence among population of different spirostreptid species (Mwabvu et al 2013(Mwabvu et al , 2015, suggesting the existence of more than one species in those taxa. It is argued that high level of divergence between identified spirostreptid species may indicate that changes in genital morphology occur rather slowly relative to the high rate of substitution in mitochondrial sequences (especially for COI), and may underestimate species diversity.…”

Section: Discussionsupporting

confidence: 88%

“…The relationships among the outgroups were not the primary focus of the present study, but are consistent with previous studies (Mwabvu et al 2013(Mwabvu et al , 2015Tinago et al 2017) that showed paraphyletic groups suggesting the presence of cryptic species (i.e., Bicoxidens spp.) and possible identification errors in the GenBank database.…”

Section: Phylogenysupporting

confidence: 92%

“…Millipede systematics is mainly based on male gonopods because they use to be species-specific (Bond et al 2003). However, studies based on DNA have demonstrated that molecular divergence in different millipede groups may not reflect divergence in morphology-based identifications and may hide considerable variation (Bond & Sierwald 2002;Bond et al 2003;Adams et al 2009;Mwabvu et al 2013Mwabvu et al , 2015Tinago et al 2017). Although our relatively small taxon sampling, the phylogenetic analysis strongly recovers Sechelleptus as monophyletic and discriminates at least two or three different groups.…”

Section: Discussionmentioning

confidence: 73%

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Sechelleptus arborivagus sp. nov., a new arboreal spirostreptid millipede (Diplopoda, Spirostreptidae) endemic to Mayotte Island (Comoros Archipelago), Indian Ocean

VandenSpiegel

Henrard

Mathys

2021

EJT

791

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A new millipede species of the genus Sechelleptus Mauriès, 1980 is described and illustrated from Mayotte Island, Indian Ocean. This new species, S. arborivagus sp. nov., found on trees, looks particularly similar to the sympatric S. variabilis VandenSpiegel & Golovatch, 2007, but is much larger and has a very different ecological behavior. Phylogenetic analyses based on a concatenated dataset of the COI and 16S rRNA genes and including nine species of Spirostreptidae (including Sechelleptus, Doratogonus Attems, 1914, Bicoxidens Attems, 1928 and Spirostreptus Brandt, 1833), strongly support the monophyly of Sechelleptus. Despite the similarity of their genitalia, the molecular analyses also reveal a clear-cut genetic divergence between S. arborivagus sp. nov. and S. variabilis (22.55% for COI and 6.63% for 16SrRNA) and further suggest the presence of a higher diversity within the genus Sechelleptus on Mayotte.

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Section: Discussionsupporting

confidence: 88%

Section: Phylogenysupporting

confidence: 92%

Section: Discussionmentioning

confidence: 73%

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Sechelleptus arborivagus sp. nov., a new arboreal spirostreptid millipede (Diplopoda, Spirostreptidae) endemic to Mayotte Island (Comoros Archipelago), Indian Ocean

VandenSpiegel

Henrard

Mathys

2021

EJT

791

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“…Large COI sequence divergences are further observed in the genera Thyropygus Pocock, 1894 andAnurostreptus Attems, 1914 (Spirostreptida, Harpagophoridae) with intraspecific values of 0-12 and 0-6% (mean: 6 and 3%) respectively, and interspecific divergences of 5-18 and 9-11% (mean: 14 and 11%) respectively (Pimvichai et al 2014). In the family Spirostreptidae Brandt, 1833, the intergeneric COI sequence divergences are 6.83-26.81% (mean: 18.43%) (Mwabvu et al 2015). As such, the amounts of sequence differentiation among the four new Apeuthes species are approximately in line with species-level divergences in other spirostreptid and spirobolid genera.…”

Section: Dna Barcodementioning

confidence: 90%

Combining mitochondrial DNA and morphological data to delineate four new millipede species and provisional assignment to the genus

2022

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Hitherto, the millipede genus Apeuthes (family Pachybolidae, subfamily Trigoniulinae) was only known from three species described in Vietnam based on morphological characters. The present study uses two partial mitochondrial gene fragments (cytochrome c oxidase I (COI) and 16S ribosomal RNA) and morphology to define four new Apeuthes species from Malaysia, Thailand and Vietnam: A. fimbriatus, sp. nov., A. longeligulatus, sp. nov., A. pollex, sp. nov. and ?A. spininavis, sp. nov. The intraspecific COI sequence divergence of two Apeuthes species is 3–7% (mean: 5%) and the interspecific divergence of five species is 11–16% (mean: 13.7%). All members of the genus share unique male characters, viz the posterior gonopod telopodite with several dentate, serrate or tuberculate lamellae in a boat-like cavity or a boat-like cavity covered with spines. The delimitation of the four new species is supported by the congruence between mitochondrial DNA and morphological data. However, while the monophyly of Trigoniulinae is well supported, the relationships within this subfamily, and particularly among Apeuthes species, including the monophyly of Apeuthes, lack strong support. Therefore assignment of the four new species, and particularly of ?A. spininavis sp. nov., to the genus Apeuthes is tentative and awaits a comprehensive revision of the group.

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“…The lowest COI sequence divergence is with Litostrophus (11-18%; mean: 15%). In the order Spirostreptida, family Spirostreptidae the intergeneric COI sequence divergences are 6.83-26.81% (mean: 18.43%) (Mwabvu et al 2015). Hence, taken together, the amount of COI sequence divergence between Coxobolellus, gen. nov. and other pseudospirobolellid, pachybolid and spirostreptid genera supports its recognition as a separate genus.…”

Section: Descriptionmentioning

confidence: 99%

Integrative taxonomy of the new millipede genus Coxobolellus, gen. nov. (Diplopoda : Spirobolida : Pseudospirobolellidae), with descriptions of ten new species

Pimvichai

Enghoff

Panha

et al. 2020

Invert. Systematics

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Pseudospirobolellidae is a poorly known family of spirobolidan millipedes with only two genera and five described species. Yet, the descriptive taxonomy and molecular systematics of this group have been largely neglected. Therefore, the present work presents an integrative taxonomic study of new pseudospirobolellid taxa in Thailand. To this end, two mitochondrial gene fragments (COI and 16S rRNA) combined with morphological characters were used to define the genus Coxobolellus, gen. nov. with 10 new species, viz. C. albiceps, sp. nov., C. compactogonus, sp. nov., C. fuscus, sp. nov., C. nodosus, sp. nov., C. serratus, sp. nov., C. simplex, sp. nov., C. tenebris, sp. nov., C. tigris, sp. nov., C. transversalis, sp. nov. and C. valvatus, sp. nov. The interspecific COI sequence divergences among the new species ranged from 6 to 15%. The intergeneric COI sequence divergence between species of Coxobolellus, gen. nov., Benoitolus birgitae and Pseudospirobolellus sp. ranged from 20 to 23%. Three major morphological differences separate Coxobolellus, gen. nov. from Benoitolus and Pseudospirobolellus, namely (1) the protruding process on the 3rd (and 4th) coxae on male legs, (2) the posterior gonopod telopodite divided into two parts, and (3) a conspicuous opening pore at the mesal margin at the end of the coxal part of the posterior gonopod. Thus, the new genus is well supported by both mtDNA and morphological evidence, while the delimitation of the 10 new species is supported by the congruence between mtDNA and morphological data. Yet, with respect to the relationships of Benoitolus birgitae, morphological data suggest a similarity with Coxobolellus, gen. nov. and Pseudospirobolellus, whereas mtDNA data place this species in the Pachybolidae. Further phylogenetic analyses are needed to explore this apparent incongruence and test the monophyly of Pseudospirobolellidae.

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Docytochrome c oxidase 1Gene Sequences Differentiate Species of Spirostreptid Millipedes (Diplopoda: Spirostreptida: Spirostreptidae)?

Abstract: BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Cited by 10 publications

References 39 publications

Sechelleptus arborivagus sp. nov., a new arboreal spirostreptid millipede (Diplopoda, Spirostreptidae) endemic to Mayotte Island (Comoros Archipelago), Indian Ocean

Sechelleptus arborivagus sp. nov., a new arboreal spirostreptid millipede (Diplopoda, Spirostreptidae) endemic to Mayotte Island (Comoros Archipelago), Indian Ocean

Combining mitochondrial DNA and morphological data to delineate four new millipede species and provisional assignment to the genus

Integrative taxonomy of the new millipede genus Coxobolellus, gen. nov. (Diplopoda : Spirobolida : Pseudospirobolellidae), with descriptions of ten new species

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