Paleoenvironmental change and age of the Miocene Kanomatazawa Formation in the Shiobara area, Tochigi Prefecture, central Japan

Yoshikawa, Toshiyuki

doi:10.5575/geosoc.111.39

Cited by 9 publications

(3 citation statements)

References 24 publications

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“…Calibration point C: Crown Meimuna opalifera : Fossil M . protopalifera was found from the Itamuro Formation, Tochigi, Japan [ 20 , 21 ]), and the fission track age of the correlative terrestrial strata of the Nashino Formation, Sendai, is 6.4 ± 0.4 Ma [ 22 ].…”

Section: Methodsmentioning

confidence: 99%

Phylogeography of Ryukyu insular cicadas: Extensive vicariance by island isolation vs accidental dispersal by super typhoon

Osozawa

Kanai²,

Fukuda³

et al. 2021

PLoS ONE

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Cicadas tend to be affected by vicariance reflecting poor mobility of nymphs underground and weak flying ability of adults. However, modern collection records of invasive cicada, combined with records of typhoon tracks, and newly obtained phylogeographic data suggest long distance, relatively instantaneous, dispersal of some vicariantly speciated cicadas. We address the importance of this typhoon dispersal mechanism applied to representative species of east Asian endemic cicadas of Cryptotympana, Mogannia, Euterpnosia and Meimuna. We combine BEAST-dated phylogenic and haplotype network analyses, modern collection data of non-native cicadas available in reports of the Japanese insect associations, modern typhoon records by Japan Meteorological Agency, and our own Quaternary geological constriction data. In conclusion, although Ryukyu endemic cicadas were vicariantly speciated, endemic cicadas on some islands were accidentally dispersed long distances to another island possibly by typhoons, particularly those associated with super typhoons generated since 1.55 Ma.

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Section: Methodsmentioning

confidence: 99%

Phylogeography of Ryukyu insular cicadas: Extensive vicariance by island isolation vs accidental dispersal by super typhoon

Osozawa

Kanai²,

Fukuda³

et al. 2021

PLoS ONE

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show abstract

“…Calibration point H: Crown Meimuna spp. : Fossil Meimuna protopalifera were found in the Itamuro Formation, Tochigi, Japan (Fujiyama 1969;Yoshikawa 2005), and the zircon fission track age of correlative terrestrial strata of the Nashino Formation of the Sendai area is 6.4 AE 0.4 Ma (Fujiwara et al 2008).…”

Section: Why Was Beast2 Not Used?mentioning

confidence: 99%

Cicada minimum age tree: Cryptic speciation and exponentially increasing base substitution rates in recent geologic time

Osozawa,

Wakabayashi

2024

F1000Res

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We developed a new time-calibrated tree incorporating primarily endemic along with some cryptic Ryukyu islands cicada data, following the recent publication of global cicada data by Marshall et al. (2018), Łukasik et al. (2018), Simon et al. (2019), Price et al. (2019), and Hill et al. (2021). A total of 352 specimens were analyzed using BEAST v1. X software with a relaxed clock model. Fossil calibrations as old as Triassic were adopted largely following Johnson et al. (2018) and Moulds (2018), and a Quaternary geological event calibration was adopted following Osozawa et al. (2012, 2021b) and input into BEAST v1. X. Our timetree suggests that Tettigarctidae had a cicada basal lineage as old as 200.63 Ma, with Derotettiginae the next oldest lineage at 99.2 Ma. Tibicininae is a sister of the remaining subfamilies of Tettigomyiinae, Cicadettinae, and Cicadidae, and their species level differentiation and radiation began at 40.57 Ma. The Cicadinae clade consists of specific tribes with paraphyletic relationship, and the vicariance and adaptive radiation generated many cryptic species in each tribe. We estimated base substitution rate as a function of age, and the result strongly indicates an exponential increase of base substitution rate in recent geologic time. The consequent increase in cicada biodiversity, including generation of cryptic species in the Ryukyu Islands and surroundings, may have been driven by the generation and spreading of C4 grasses and coeval Quaternary climate change.

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“…Calibration point H: Crown Meimuna opalifera: Fossil Meimuna protopalifera was found from the Itamuro Formation, Tochigi, Japan (Fujiyama 1982;Yoshikawa 2005), and the fission track age of the correlative terrestrial strata of the Nashino Formation, Sendai, is 6.4 ± 0.4…”

Section: Introductionmentioning

confidence: 99%

Cicada timetree by BEAST v1.X verified the recently and exponentially increasing base substitution rates

Osozawa

Wakabayashi

2020

Preprint

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Following the recent publication of global cicada phylogenetic trees by Marshall et al. (2018), Łukasik et al. (2018), and Simon et al. (2019), we developed a new dated tree incorporating mostly endemic east Asian cicada data for totally 113 specimens, using the mostly advanced BEAST v1.X software applied the relaxed clock model. Fossil calibrations as old as Triassic were adopted after Moulds (2018), and a Quaternary geological event calibration was adopted following Osozawa et al. (2012), applying the calibration function of BEAST. Our timetree suggests that Tettigarctidae had cicada basal lineage as old as 200 Ma, and Derotettiginae was next as old as 100 Ma. Tibicininae was a sister of the resting Cicadidae, and Tettigomyiinae, Cicadettinae, and Cicadina started simultaneous branching and radiation around 40 Ma. We made a base substitution rate vs age diagram based on the timetree using the BEAST function, and it strongly suggested an exponential increase of base substitution rate approaching the present. The consequent increased cicada biodiversity including generation of cryptic species might have been driven by the generation and spreading of C4 grasses and the following Quaternary glaciations and severe environmental change.

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Paleoenvironmental change and age of the Miocene Kanomatazawa Formation in the Shiobara area, Tochigi Prefecture, central Japan

Cited by 9 publications

References 24 publications

Phylogeography of Ryukyu insular cicadas: Extensive vicariance by island isolation vs accidental dispersal by super typhoon

Phylogeography of Ryukyu insular cicadas: Extensive vicariance by island isolation vs accidental dispersal by super typhoon

Cicada minimum age tree: Cryptic speciation and exponentially increasing base substitution rates in recent geologic time

Cicada timetree by BEAST v1.X verified the recently and exponentially increasing base substitution rates

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