Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Phylogenetic and morphological discord indicates introgressive hybridisation in two genera of Australian millipedes (Diplopoda, Polydesmida, Paradoxosomatidae).

ABSTRACT: Discord between molecular and morphological datasets was observed in two pairs of species of Australian millipedes in the family Paradoxosomatidae using morphological and molecular phylogenetic analysis (mitochondrial COI rDNA and 16 rRNA, and nuclear 28S rRNA). Close to the presumed distributional boundary between Pogonosternumnigrovirgatum (Carl, 1912) and Pogonosternumjeekeli Decker, 2017, near Dargo in Central Gippsland, Victoria, Pogonosternum specimens were collected which are phylogenetically closer to P.jeekeli in COI and 16S sequences, but are morphologically closer to P.nigrovirgatum. At Mount Osmond, Adelaide, South Australia, eight morphologically typical Somethuscastaneus (Attems, 1944) specimens were collected are phylogenetically closer to S.castaneus in 28S genealogy, but three of the eight are closer to S.lancearius Jeekel, 2002 in COI genealogy. These two cases are discussed in terms of hybridisation, past introgressive hybridisation events and aberrant morphology.

SUBMITTER: Decker P

PROVIDER: S-EPMC6306475 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

ACCESS DATA

Json Xml

Similar Datasets

Mountainous millipedes in Vietnam. I. Two new species of the family Paradoxosomatidae from Mount Fansipan (Diplopoda, Polydesmida).

Project description:Two new paradoxosomatid millipede species were discovered at the high elevations of Mount Fansipan in northwestern Vietnam. They are named as Orthomorphoides sapa sp. nov. and Hylomus solenophorus sp. nov. In addition to their morphological descriptions, sequences from fragments of two mitochondrial genes, COI and 16S rRNA, are also provided for both new species.

| S-EPMC8065007 | biostudies-literature

Review of Dragon Millipedes (Diplopoda, Polydesmida, Paradoxosomatidae) in the Fauna of Vietnam, with Descriptions of Three New Species.

Project description:The genus Hylomus Cook & Loomis, 1924 is reviewed from Vietnam, with 13 recorded species. Of these, three are described as new, H. songoku sp. nov. from Xuan Son National Park, H. namek sp. nov. from Cuc Phuong National Park, and H. saiyans sp. nov. from Vinh Phuc and Ha Giang Provinces. The new species, H. songoku sp. nov., is distinguished by gonopod solenophore with rounded lobuliform lamina medialis, and well-developed lamina lateralis with a densely setose area; tip of gonopod tuberculiform. H. namek sp. nov. is separated from its congeners by its gonopod femorite being short, parallel-sided, slightly constricted at the middle; tip of gonopod rounded; and lastly, H. saiyans sp. nov. is diagnosable by its gonopod femorite being long and enlarged distally, postfemoral region short, tip bilobuled. The relationship among Hylomus species from Vietnam was analyzed using a fragment of the 16S rRNA mitochondrial gene. The analysis supports the monophyly of the genus Hylomus. It is recommended that more Hylomus species be added in the analysis to better clarify the phylogenetic relationships in the genus.

| S-EPMC6759935 | biostudies-literature

Six new species of dragon millipedes, genus Desmoxytes Chamberlin, 1923, mostly from caves in China (Diplopoda, Polydesmida, Paradoxosomatidae).

Project description:Six new species of Desmoxytes are described from southern China: Desmoxytes laticollis sp. n., Desmoxytes simplipoda sp. n., and Desmoxytes similis sp. n., all three from caves in Guangdong Province; Desmoxytes phasmoides sp. n. also from a cave, and both epigean Desmoxytes spiniterga sp. n. and Desmoxytes variabilis sp. n., the latter trio from Guangxi Zhuang Autonomous Region. A modified key to all 20 Desmoxytes species currently known to occur in China is given.

| S-EPMC4829881 | biostudies-literature

A review of the Western Australian keeled millipede genus Boreohesperus (Diplopoda, Polydesmida, Paradoxosomatidae).

Project description:A taxonomic review of the endemic Western Australian millipede genus Boreohesperus Shear is presented in which six species are recognized: the type species, Boreohesperus capensis Shear, 1992, from North-West Cape, one new species, Boreohesperus dubitalis, from Barrow Island and four more new species from the Pilbara region, Boreohesperus curiosus, Boreohesperus delicatus, Boreohesperus furcosus and Boreohesperus undulatus. All six species have highly localized distributions, consistent with being short-range endemics. The nomenclature of the branches of the male gonopod is revised.

| S-EPMC3677291 | biostudies-other

The Australian millipede Dicranogonuspix Jeekel, 1982 (Diplopoda, Polydesmida, Paradoxosomatidae): a species with and without paranota.

Project description:Dicranogonuspix Jeekel, 1982 occurs in Victoria and Tasmania, Australia, including the islands in eastern Bass Strait between the two States. There is only slight gonopod variation across this range, but Dicranogonuspix populations with and without paranota are separated in Bass Strait by the ca 50 km-wide gap between the Kent and Furneaux Groups of islands.

| S-EPMC4258738 | biostudies-literature

Phylogenetic analysis of the Australian trans-Bass Strait millipede genus Pogonosternum (Carl, 1912) (Diplopoda, Polydesmida, Paradoxosomatidae) indicates multiple glacial refugia in southeastern Australia.

Project description:This study documents the first detailed phylogenetic analysis of an Australian paradoxosomatid millipede genus. Two mitochondrial genes (partial COI and 16S) as well as partial nuclear 28S rDNA were amplified and sequenced for 41 individuals of the southeastern Australian genus Pogonosternum Jeekel, 1965. The analysis indicates that five species groups of Pogonosternum occur across New South Wales, Victoria and Tasmania: Pogonosternum nigrovirgatum (Carl, 1912), Pogonosternum adrianae Jeekel, 1982, Pogonosternum laetificum Jeekel, 1982 and two undescribed species. Pogonosternum coniferum (Jeekel, 1965) specimens cluster within Pogonosternum nigrovirgatum. Most of these five species groups exhibit a pattern of high intraspecific genetic variability and highly localized haplotypes, suggesting that they were confined to multiple Pleistocene refugia on the southeastern Australian mainland. The phylogenetic data also show that northwestern Tasmania was colonized by Pogonosternum nigrovirgatum, probably from central Victoria, and northeastern Tasmania by an as yet undescribed species from eastern Victoria.

| S-EPMC4829959 | biostudies-literature

A revision of dragon millipedes I: genus Desmoxytes Chamberlin, 1923, with the description of eight new species (Diplopoda, Polydesmida, Paradoxosomatidae).

Project description: Not available

| S-EPMC5988806 | biostudies-literature

No Tomosvary organ in flat backed millipedes (Diplopoda, Polydesmida).

Project description:The Tömösváry organ is a sensory structure of the head in myriapods and some other terrestrial arthropods. Due to its variable shape, size, and position in millipedes (Diplopoda) the Tömösváry organ is commonly used as diagnostic character in taxonomic descriptions and often included in phylogenetic analyses. For the Polydesmida, the largest millipede order, the Tömösváry organ is inconsistently stated as being either absent or present as a pear-shaped pit covered by a membrane or cuticular disc. In order to resolve this inconsistency, we investigated the morphology of the presumable Tömösváry organ in four polydesmidan species based on paraffin-histology, semi-thin sections and micro-computed tomography. Our results unambiguously favor the view that the articulation of the cephalic tentorium with the head capsule was misidentified as the Tömösváry organ in previous studies, and thus that the Tömösváry organ indeed is absent in the Polydesmida. The pear-shaped pit proved to represent the distal roundish expansion of the incisura lateralis, to which - similarly as in julidan millipedes - the tentorial transverse bar is articulated. The absence of the Tömösváry organ in the Polydesmida does not affect the topology of the interrelationships among the millipede orders retrieved in previous cladistic analyses based on morphology. As a character shared by Colobognatha and Juliformia, however, absence of a Tömösváry organ in Polydesmida favors the optimization of its presence in nematophoran millipedes as a reversal. Further studies are needed to clarify whether among chilognathan millipedes a Tömösváry organ really exists in taxa such as Stemmiulida, and whether the Tömösváry organs are homologous across millipedes.

| S-EPMC7200888 | biostudies-literature

A revision of dragon millipedes IV: the new genus <i>Spinaxytes</i>, with the description of nine new species (Diplopoda, Polydesmida, Paradoxosomatidae).

Project description:Nine new species constituting the 'spiny' group of dragon millipedes are assigned to the new genus Spinaxytes Srisonchai, Enghoff & Panha, gen. n. Seven new species are described from Thailand: S.biloba Srisonchai, Enghoff & Panha, sp. n. and S.palmata Srisonchai, Enghoff & Panha, sp. n. from Surat Thani Province, S.hasta Srisonchai, Enghoff & Panha, sp. n. from Chumphon Province, S.krabiensis Srisonchai, Enghoff & Panha, sp. n. (type species) and S.sutchariti Srisonchai, Enghoff & Panha, sp. n. from Krabi Province, S.uncus Srisonchai, Enghoff & Panha, sp. n., and S.macaca Srisonchai, Enghoff & Panha, sp. n. from Phang Nga Province; as well as one from Malaysia, S.tortioverpa Srisonchai, Enghoff & Panha, sp. n., and one from Myanmar, S.efefi Srisonchai, Enghoff & Panha, sp. n. The new genus is endemic to South Myanmar, South Thailand, and Malaysia, and all new species are restricted to limestone habitats. All were exclusively found living on humid rock walls and/or inside small caves. Complete illustrations of external morphological characters, an identification key, and a distribution map are provided.

| S-EPMC6255853 | biostudies-literature

A new species of Tridactylogonus Jeekel, 1982 from South Australia (Diplopoda, Polydesmida, Paradoxosomatidae).

Project description:Tridactylogonus warrenbenensissp. n. is described from Warrenben Conservation Park at the southern end of the Yorke Peninsula in South Australia. Like T. obscurus Jeekel, 1982 and T. rugosissimus Jeekel, 2002, the new species has prominent cellular sculpturing on the prozonites and granulose sculpturing on parts of the metazonites. Unlike its congeners and most species in the subfamily Australiosomatinae, the new species lacks a femoral process or tubercle on male leg 1.

| S-EPMC5674013 | biostudies-literature

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data