Molecular phylogeny of the harvestmen genus Sabacon (Arachnida: Opiliones: Dyspnoi) reveals multiple Eocene–Oligocene intercontinental dispersal events in the Holarctic

Schönhofer, Axel L.; McCormack, M; Tsurusaki, Nobuo; Martens, Jochen; Hedin, Marshal

doi:10.1016/j.ympev.2012.10.001

Cited by 31 publications

(40 citation statements)

References 52 publications

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“…Because of low vagility, they often show high geographic differentiation both in external morphology and chromosomes even in a single species (Tsurusaki 2007). Furthermore, because of their general lack of resistance to desiccation, most harvestmen tend to be limited to forests with moderate moisture and several groups, such as Sabacon (Sabaconidae), Caddo (Caddidae), and Triaenonychidae, show typical patterns of disjunct distribution as relicts (Suzuki et al 1977, Schö nhofer et al 2013. Their limited occurrence and enormous geographic variability have hampered phylogenetic analyses based on morphological characters because of the paucity of reliable external characters.…”

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confidence: 99%

“…Recent molecular phylogenetic studies have revealed new aspects for our understanding of the relationships in various groups of harvestmen (Giribet et al 1999; Thomas and Hedin 2008;Sharma andGiribet 2009, 2011;Derkarabetian et al 2010Derkarabetian et al , 2011Giribet et al 2010;Hedin and Thomas 2010;Schö nhofer and Martens 2010;Burns et al 2012;Hedin et al 2012;Sharma 2010;Sharma et al 2012;Schö nhofer et al 2013). In this study, as a Þrst trial of the application of molecular phylogenetics for Japanese laniatorids, we focused on the phylogenetic relationships of various populations of the laniatorid Pseudobiantes japonicus Hirst, 1911 (Epedanidae) and its allied species of the same family.…”

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confidence: 99%

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Phylogeography of the Laniatorid HarvestmanPseudobiantes japonicusand Its Allied Species (Arachnida: Opiliones: Laniatores: Epedanidae)

Kumekawa

Ito

Tsurusaki

et al. 2014

Annals of the Entomological Society of America

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To clarify the phylogenetic relationships of Pseudobiantes japonicus Hirst, 1911 and its allied species, Epedanellus tuberculatus Roewer, 1911 and Kilungius insulanus (Hirst, 1911) (Arachnida: Opiliones: Laniatores: Epedanidae), we conducted morphological and nucleotide sequence analyses of this complex. Sequencing of the cytochrome c oxidase subunit I gene of 179 samples recovered six clades comprised of four allopatric lineages within P. japonicus and two monophyletic groups of E. tuberculatus and K. insulanus, respectively, related as follows: ([Clades A ϩ B of P. japonicus] [Clade C of P. japonicus]) (K. insulanus [Clade D of P. japonicus ϩE. tuberculatus]). This phylogenetic relationship implies that "Pseudobiantes japonicus" is paraphyletic or polyphyletic, unless mitochondrial introgression between species is postulated. Moreover, Clades C and D of P. japonicus were also separable by the combination of a few morphological characters and from Clades A and B in P. japonicus. These results suggest that a thorough taxonomic revision is needed for the classiÞcation of P. japonicus and allied species.

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confidence: 99%

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confidence: 99%

Phylogeography of the Laniatorid HarvestmanPseudobiantes japonicusand Its Allied Species (Arachnida: Opiliones: Laniatores: Epedanidae)

Kumekawa

Ito

Tsurusaki

et al. 2014

Annals of the Entomological Society of America

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“…This value is about 12 times those used in several studies of Arachnida (2.3-2.69%: BidegarayBatista and Arnedo, 2011; Schönhofer et al, 2013).…”

Section: Divergence Timementioning

confidence: 54%

“…The estimated rate was 2.5%/My, which is often used for the mean substation rate of the COI gene in Arachnida, e.g., spiders (2.5%, Bidegaray-Batista and Arnedo, 2011) and harvestmen (2.3-2.69%, Schönhofer et al, 2013). In addition, the mean substitution rate of the COI gene was estimated based on an assumption that the formation of the Kerama Gap caused the separation between T. crucifer and T. stimpsonii (see Discussion) in order to compare this substitution rate with 2.5%/My.…”

Section: Estimations Of Divergence Time and Substitution Ratementioning

confidence: 99%

Phylogeographic Study of Whip Scorpions (Chelicerata: Arachnida: Thelyphonida) in Japan and Taiwan

Karasawa

Nagata²,

Aoki³

et al. 2015

Zoological Science

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Whip scorpions (Thelyphonida), comprising an order in the class Arachnida, are distributed from tropical to temperate zones. Two species occur exclusively in Japan and Taiwan, but the border of their distributional ranges is ambiguous in the Central Ryukyus (Japan). We collected new specimens from the Central Ryukyus and revealed that the border of distribution of the two species lies between the Central and Southern Ryukyus, i.e., the Kerama Gap. Moreover, the estimated divergence time (15.8 Mya) of the two species, based on the mitochondrial COI gene, was older than the recently estimated time (1.55 Mya) of formation of the Kerama Gap. These results highlight the risks of a priori assumption solely on the basis of geological data for applying it as a calibration point to some terrestrial animals in this region. Typopeltis stimpsonii was genetically divided into four lineages, two of which turned out to be endemic to the Okinawa Islands. All specimens from the main island of Japan and Shikoku were in one lineage, which was also found in the Amami Islands and Hachijojima Island. This suggests that these specimens may have been dispersed by human activity. Typopeltis crucifer included five genetic lineages. Species collected from Ishigakijima and Iriomotejima Islands were genetically diversified not between the borders of these islands but within Ishigakijima Island. This study also suggests that phylogenetic diversity of the species in the Southern Ryukyus have increased through two times of invasions from Taiwan.

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“…Therefore, harvestmen represent a good model for studying phylogeography and speciation processes [Boyer et al, 2007]. Moreover, numerous molecular analyses detected high cryptic species diversity and limited gene flow between close populations [Boyer et al, 2007;Murienne and Giribet, 2009;Murienne et al, 2010;Hedin et al, 2012;Schönhofer et al, 2013].…”

Section: Introductionmentioning

confidence: 99%

Karyotype Evolution in Harvestmen of the Suborder Cyphophthalmi (Opiliones)

Svojanovská

Nguyen²,

Hiřman³

et al. 2016

Cytogenet Genome Res

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The morphologically uniform suborder Cyphophthalmi represents a basal group of harvestmen (Opiliones). As such, it plays an important role in the reconstruction of the karyotype evolution within this arachnid order. The cytogenetic analysis of 6 representatives of the suborder Cyphophthalmi, namely Miopsalis sp. (2n = 30; Stylocellidae), Austropurcellia arcticosa (Cantrell, 1980) (2n = 30; Pettalidae), Parapurcellia amatola de Bivort & Giribet, 2010 (2n = 32; Pettalidae), Paramiopsalis aff. ramulosus Juberthie, 1962 (2n = 28; Sironidae), Cyphophthalmus duricorius Joseph, 1868 (2n = 24; Sironidae), and Siro carpaticus Rafalski, 1956 (2n = 52; Sironidae) was performed. Fluorescence in situ hybridization with 18S rDNA probe was used to analyze the distribution of major ribosomal RNA genes in harvestmen. We confront the obtained cytogenetic data with current hypotheses on cyphophthalmid phylogeny to reconstruct their karyotype evolution. We conclude that the ancestral karyotype of harvestmen consisted of 2n = 30 elements with 1 chromosome pair bearing terminal rDNA clusters. The rDNA locus was multiplicated in the evolution of Cyphophthalmi. However, decreases as well as increases in the number of chromosomes have been detected in the karyotype evolution of Cyphophthalmi. Our data thus reveal unexpected diversity in cyphophthalmid karyotypes.

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Molecular phylogeny of the harvestmen genus Sabacon (Arachnida: Opiliones: Dyspnoi) reveals multiple Eocene–Oligocene intercontinental dispersal events in the Holarctic

Cited by 31 publications

References 52 publications

Phylogeography of the Laniatorid HarvestmanPseudobiantes japonicusand Its Allied Species (Arachnida: Opiliones: Laniatores: Epedanidae)

Phylogeography of the Laniatorid HarvestmanPseudobiantes japonicusand Its Allied Species (Arachnida: Opiliones: Laniatores: Epedanidae)

Phylogeographic Study of Whip Scorpions (Chelicerata: Arachnida: Thelyphonida) in Japan and Taiwan

Karyotype Evolution in Harvestmen of the Suborder Cyphophthalmi (Opiliones)

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