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

Osozawa, Soichi; Kanai, Kenichi; Fukuda, Haruo; Wakabayashi, John

doi:10.1371/journal.pone.0244342

Cited by 13 publications

(21 citation statements)

References 14 publications

(25 reference statements)

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“…Even in a scenario where dispersal across Gibraltar was mediated by extreme winds or other stochastic events (Mas‐Peinado et al, 2021; Osozawa et al, 2021), the likelihood of survival and successful settling afterward is low. Some accidental human‐mediated introductions of cicada nymphs have been occasionally reported, likely via potted plants trading (Hertach & Nagel, 2013; Hill et al, 2005; Osozawa et al, 2021; Pons et al, 2021), but this hypothesis can be safely discarded for T. afroamissa , as it was found in remote and nearly untouched habitats of Morocco (Costa et al, 2017). Adding to this, the deep level of divergence of T. afroamissa from Iberian Tettigettalna is not compatible with an anthropogenic founder event.…”

Section: Discussionmentioning

confidence: 99%

The effect of the Messinian salinity crisis on the early diversification of the Tettigettalna cicadas

et al. 2022

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The current distribution patterns of many Mediterranean species are often a consequence of large and impactful past geoclimatic events, such as the Messinian Salinity Crisis (MSC) and the Quaternary glacial cycles. Cicadas are flying insects with poor dispersal ability, which have experienced intense local differentiation in the Mediterranean, where the genus Tettigettalna has surfaced as a biogeographic model. The genus includes 10 species with species-specific calling songs but identical morphology. All Tettigettalna species are restricted to Southern Iberia, with the exception of T. estrellae (northwest Iberia), the widespread T. argentata (mainly Iberia, France and Italy), and T. afroamissa (Morocco). With an expanded genetic dataset involving nuclear (EF1α) and mitochondrial (5′ and 3′ COI and ATP) loci, we reconstructed the phylogeny of the genus and estimated divergence dates for Tettigettalna species under a Bayesian framework. Phylogeny with the new mitochondrial dataset was in agreement with previous studies, whereas the nuclear EF1α supported T. josei and T. afroamissa as monophyletic clades but lacked resolution to resolve the remaining taxa. Some sister taxa share mitochondrial haplotypes, hinting for incomplete lineage sorting. Estimates of divergence time settled T. josei as the earliest diverging lineage, likely as a pre-or early-MSC event. As for the origin of T. afroamissa in Morocco, though time estimates could not entirely rule out post-MSC dispersal, the most likely scenario points to isolation of African Tettigettalna after the reopening of the strait of Gibraltar. The Pleistocene glaciations that followed likely impacted on the diversification of the remaining species of the genus in southern Iberia refugia.

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Section: Discussionmentioning

confidence: 99%

The effect of the Messinian salinity crisis on the early diversification of the Tettigettalna cicadas

et al. 2022

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“…The right screen displayed the included monophyletic taxa, representing specific clades. For the input in Figures 2 and 3, calibration dates (see below) were set in the Priors section of BEAUti. Tips: Default (Osozawa & Wakabayashi, 2022; Osozawa, Kanai, et al., 2021; https://beast.community/first_tutorial). The Tips panel allows for assigning dates to extant taxa.…”

Section: Methodsmentioning

confidence: 99%

“…As a result, vicariant speciation simultaneously started at this time and acted on each isolated island population (c.f., Kodandaramaiah, 2011). The age of MRCA at 1.55 ± 0.15 Ma serves as a robust date for geological event calibration, signifying the isolation of each island within the Ryukyu Islands (c.f., Osozawa, Kanai, et al, 2021;Osozawa, Ito, et al, 2021, Izu-Bonin Islands). Based on Osozawa et al (2012), I have already applied this calibration date as tMRCA of insect clades (Osozawa et al, 2013;Osozawa, Fukuda, et al, 2016;Osozawa, Kanai, et al, 2021;Osozawa, Oba, et al, 2015;Osozawa, Ogino, et al, 2016;Osozawa, Sato, et al, 2017;Osozawa, Shiyake, et al, 2017;Osozawa, Takáhashi, et al, 2015, 2022.…”

Section: Geological Event Calibrationmentioning

confidence: 99%

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Geologically calibrated mammalian tree and its correlation with global events, including the emergence of humans

Osozawa

2023

Ecology and Evolution

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A robust timetree for Mammalia was constructed using the time calibration function of BEAST v1.10.4 and MEGA 11. The analysis involved the application of times of the most recent common ancestors, including a total of 19 mammalian fossil calibration ages following Benton et al. (Palaeontologia Electronica, 2015, 1–106) for their minimum ages. Additionally, fossil calibration ages for Gorilla, Pan, and a geologic event calibration age for otters were incorporated. Using these calibration ages, I constructed a geologically calibrated tree that estimates the age of the Homo and Pan splitting to be 5.69 Ma. The tree carries several significant implications. First, after the initial rifting at 120 Ma, the Atlantic Ocean expanded by over 500 km around Chron 34 (84 Ma), and vicariant speciation between Afrotheria (Africa) and Xenarthra (South America) appears to have commenced around 70 Ma. Additionally, ordinal level differentiations began immediately following the K–Pg boundary (66.0 Ma), supporting previous hypothesis that mammalian radiation rapidly filled ecological niches left vacant by non‐avian dinosaurs. I constructed a diagram depicting the relationship between base substitution rate and age using an additional function in BEAST v1.10.4. The diagram reveals an exponential increase in the base substitution rate approaching recent times. This increased base substitution rate during the Neogene period may have contributed to the expansion of biodiversity, including the extensive adaptive radiation that led to the evolution of Homo sapiens. One significant driving factor behind this radiation could be attributed to the emergence and proliferation of C4 grasses since 20 Ma. These grasses have played a role in increasing carbon fixation, reducing atmospheric CO2 concentration, inducing global cooling, and initiating Quaternary glacial–interglacial cycles, thereby causing significant climatic changes.

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Paleopteran molecular clock: Time drift and recent acceleration

Osozawa,

Nel

2024

Ecology and Evolution

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Applying BEAST v1.10.4, we constructed a Bayesian Inference tree comprising 322 taxa, primarily representing Paleoptera (Odonata and Ephemeroptera; Pterygota), Zygentoma and Archaeognatha (Apterygota; paraphyly), and Neoptera (Plecoptera; Pterygota), based on a 2685 bp sequence dataset. Our analyses revealed that robust dating required the incorporation of both Quaternary and pre‐Quaternary dates. To achieve this, our dating incorporated a 1.55 Ma (Quaternary) geological event (the formation of the Ryukyu Islands) and a set of chronologically well‐founded fossil dates, spanning from up to 400 Ma (Devonian) for the stem Archaeognatha, 320 Ma (Carboniferous) for the crown of Paleoptera, 300 Ma (Carboniferous) for the crown Ephemeroptera, and 280 Ma (Permian) for the crown Odonata, down to 1.76 Ma (Quaternary) for Calopteryx japonica, encompassing a total of 22 calibration points (events: 6, fossils: 16; Quaternary: 7, pre‐Quaternary: 15). The resulting dated tree aligns with previous research, albeit with some dates being overestimated. This overestimation was mainly due to the lack of Quaternary calibration and the exclusive dependence on pre‐Quaternary calibration, though the application of maximum age constraints also played a role. Our minimum age dating demonstrates that the molecular clock did not uniformly progress, rendering rate dating an inapplicable approach. We observed that the base substitution rate is time‐dependent, with an exponential increase evident from around 20 Ma (Miocene) to the present time, exceeding an order of magnitude. The extensive radiation and speciation of Insecta and Paleoptera, potentially resulting from the severe climatic changes associated with the Quaternary, including the commencement of glacial and interglacial cycles, may have significantly contributed to this increase in base substitution rates. Additionally, we identified a potential peak in base substitution rates during the Carboniferous period, around 320 million years ago, possibly corresponding to the Late Paleozoic Ice Age.

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

Cited by 13 publications

References 14 publications

The effect of the Messinian salinity crisis on the early diversification of the Tettigettalna cicadas

The effect of the Messinian salinity crisis on the early diversification of the Tettigettalna cicadas

Geologically calibrated mammalian tree and its correlation with global events, including the emergence of humans

Paleopteran molecular clock: Time drift and recent acceleration

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