Molecular phylogeny of the genus Pieris (Ericaceae) with special reference to phylogenetic relationships of insular plants on the Ryukyu Islands

2007 ◽  
Vol 270 (3-4) ◽  
pp. 217-230 ◽  
Author(s):  
H. Setoguchi ◽  
W. Watanabe ◽  
Y. Maeda ◽  
Ching-I. Peng
Keyword(s):  
Molecular Phylogeny ◽  
Special Reference ◽  
Phylogenetic Relationships ◽  
Ryukyu Islands ◽  
The Ryukyu Islands

scholarly journals Phylogenetic Relationships between the Tideland Snails Batillaria flectosiphonata in the Ryukyu Islands and B. multiformis in the Japanese Islands

2003 ◽  
Vol 20 (11) ◽  
pp. 1423-1433 ◽  
Author(s):  
Shigeaki Kojima ◽  
Satomi Kamimura ◽  
Taeko Kimura ◽  
Ikuo Hayashi ◽  
Akiko Iijima ◽  
...  
Keyword(s):  
Phylogenetic Relationships ◽  
Ryukyu Islands ◽  
The Ryukyu Islands ◽  
Japanese Islands

Phylogenetic relationships and divergence times of the genus Tokudaia within Murinae (Muridae; Rodentia) inferred from the nucleotide sequences encoding the Cytb gene, RAG 1, and IRBP

2004 ◽  
Vol 82 (8) ◽  
pp. 1343-1351 ◽  
Author(s):  
Jun J Sato ◽  
Hitoshi Suzuki
Keyword(s):  
Phylogenetic Relationships ◽  
Divergence Time ◽  
Nucleotide Sequences ◽  
Ryukyu Islands ◽  
Mitochondrial Cytochrome B ◽  
Short Period ◽  
The Ryukyu Islands ◽  
Codon Positions ◽  
Recombination Activating Gene ◽  
Rag 1

The phylogenetic relationships of six genera of Murinae (Apodemus, Diplothrix, Micromys, Mus, Rattus, and Tokudaia) were examined using the nucleotide sequences for the mitochondrial cytochrome b (Cytb), as well as the nuclear recombination activating gene 1 (RAG1) and interphotoreceptor retinoid-binding protein (IRBP), with special emphasis on the position of the genus Tokudaia, which is endemic to the Ryukyu Islands. Compared with Cytb at all codon positions, the first and second codon positions of Cytb, RAG1 (1002 base pairs (bp)), and IRBP (1586 bp) sequences were less prone to saturation. Close affinity between the genera Tokudaia and Apodemus was observed in the analyses using the IRBP (1586 bp) and combined nuclear (2588 bp; RAG1 + IRBP) sequences. The divergence time for the Tokudaia–Apodemus clade was estimated at approximately 6.5–8.0 Ma, which is more recent than previously reported, thereby indicating the recent colonization of the Ryukyu Islands by the genus Tokudaia. The other relationships among the main genera were highly ambiguous, owing either to saturation or insufficient phylogenetic information. The radiation of the main genera within a relatively short period of evolutionary time may explain the unresolved topologies, although molecular sources that are less subject to saturation are required to resolve the outstanding issues.

scholarly journals Phylogenomic insights into the divergent history and hybridization within the East Asian endemic Abelia (Caprifoliaceae)

2021 ◽  
Author(s):  
Qinghui Sun ◽  
Diego F Morales-Briones ◽  
Hongxin Wang ◽  
Jacob F. Landis ◽  
Jun Wen ◽  
...  
Keyword(s):  
Phylogenetic Relationships ◽  
East Asian ◽  
Network Evolution ◽  
Disjunct Distribution ◽  
Ryukyu Islands ◽  
Last Interglacial ◽  
Niche Modelling ◽  
Range Contraction ◽  
Biogeographic History ◽  
The Ryukyu Islands

Background and Aims Abelia (Caprifoliaceae) is a small genus with five species (including one artificial hybrid). The genus has a disjunct distribution across mainland China, Taiwan and the Ryukyu Islands, providing a model system to explore species dispersal mechanisms of the East Asian flora. However, the current phylogenetic relationships within Abelia remain controversial. Methods In this study, we reconstructed the phylogenetic relationships within Abelia using nuclear loci generated by target enrichment and the cpDNA from genome skimming. Key Results: We found large cytonuclear discordance across the genus. Based on the nuclear and chloroplast phylogenies we proposed to merge A. schumannii into A. macrotera, and A. macrotera var. mairei into A. uniflora. Divergence time estimation, ancestral area reconstruction, and ecological niche modelling (ENM) were used to examine the biogeographic history of Abelia. Our results showed that Abelia originated in Southwest China, and diversification began in the Early Eocene, followed by A. chinensis var. ionandra colonizing Taiwan in the Middle Miocene. The ENM results suggested an expansion of climatically suitable areas during the Last Glacial Maximum and range contraction during the Last Interglacial. Disjunction between the Himalaya-Hengduan Mountain region (HHM) and Taiwan is most likely the consequence of topographic isolation and postglacial contraction. Conclusions Overall, our results supports that postglacial range contraction together with topographic heterogeneity resulted in the Taiwan and China mainland disjunction. Furthermore, when we using genome data to reconstruct the phylogeny of related species, branch evolution and network evolution should be considered, as well as gene flow in historical periods. This research provide new insights for the speciation process and taxonomy of Abelia.

Monthly Water Exchange through the Ryukyu Islands Revealed by Salinity Structural Changes

2013 ◽  
Vol 864-867 ◽  
pp. 2335-2339
Author(s):  
Ya Pan Liu ◽  
Jian Cheng Kang ◽  
Jiong Zhu ◽  
Qin Chen Han
Keyword(s):  
Structural Changes ◽  
Water Exchange ◽  
High Salinity ◽  
World Ocean ◽  
Core Layer ◽  
Ryukyu Islands ◽  
High Salinity Water ◽  
The Ryukyu Islands ◽  
Salinity Water ◽  
World Ocean Atlas

Using salinity database of World Ocean Atlas 2009 (WOA09) issued by NOAA in 2010, refer the range of high-salinity tongue to indicate the strength about high-salinity water, from the perspective of structural changes of salinity; the water exchange through Ryukyu Islands upper 500 m have been analyzed, the results show that: due to Ryukyu Trough, currents on both sides of Ryukyu Islands occur exchange, for upper 500 m, high-salinity water in east of the Ryukyu Islands mainly invade the west waterthe Kuroshio in East China Sea; the intrusion strength is powerful from the depth of 100 m to 200 m, and the 150 m layer is the core layer of high-salinity water intrusion; the high-salinity water at the east of Ryukyu Islands invades the Kuroshio are stronger in March, May, June, September, October and November, are weaker in April and December.

The comparative yields of two types of leucaena (Peruvian v. Hawaiian) grown for forage production in Ryukyu Islands

1986 ◽  
Vol 106 (3) ◽  
pp. 623-624 ◽  
Author(s):  
Y. Kitamura
Keyword(s):  
Leucaena Leucocephala ◽  
Ryukyu Islands ◽  
Forage Production ◽  
High Quality ◽  
The Ryukyu Islands

Leucaena leucocephala (Lam.) de Wit, a leguminous shrub, has come into use as a fodder plant for animals in the Ryukyu Islands as it provides highly palatable, high quality feed (Kitamura, 1985). It is superior to other feeds available in this regard (Higashiohmine, Aramoto & Yamashiro, 1971; Isa et al. 1982).

Carbon and Oxygen Isotope Records of Tridacna squamosa Shells from two Different Latitudes in the Ryukyu Islands

2021 ◽  
Vol 25 (2) ◽  
Author(s):  
Satoshi Kodama ◽  
Hideko Takayanagi ◽  
Kosuke Yoshii ◽  
Thuy Thi Nhu Ha ◽  
Ryuji Asami ◽  
...  
Keyword(s):  
Oxygen Isotope ◽  
Ryukyu Islands ◽  
Carbon And Oxygen Isotope ◽  
The Ryukyu Islands ◽  
Tridacna Squamosa

A taxonomic review of the genus Physopelta (Hemiptera: Heteroptera: Largidae) from Japan, Korea, and Taiwan, with a new record of Ph. parviceps from China

Zootaxa ◽  
2021 ◽  
Vol 4951 (3) ◽  
pp. 461-491
Author(s):  
JUN SOUMA ◽  
TADASHI ISHIKAWA
Keyword(s):  
New Species ◽  
New Record ◽  
Guangdong Province ◽  
Zhejiang Province ◽  
Ryukyu Islands ◽  
Taxonomic Review ◽  
The Ryukyu Islands ◽  
Two New Species ◽  
Central Taiwan ◽  
First Time

In this paper, we revised the physopeltine genus Physopelta Amyot & Serville, 1843 (Hemiptera: Heteroptera: Largidae) from Japan, Korea, and Taiwan. Five species were recognized and diagnosed, including two new species, Ph. (Neophysopelta) lutaspidata sp. nov. from northern and central Taiwan and Ph. (N.) fusciscutellata sp. nov. from the Ryukyu Islands, Japan and Taiwan, and three known species, Ph. (N.) gutta gutta (Burmeister, 1834), Ph. (N.) parviceps Blöte, 1931, and Ph. (N.) quadriguttata Bergroth, 1894. Physopelta (Neophysopelta) fusciscutellata sp. nov., was previously regarded as either of the two species, Ph. (N.) cincticollis Stål, 1863 and Ph. (N.) parviceps, for populations from Taiwan. Previous records of Ph. (N.) cincticollis from Japan proper and Korea, and Ph. (N.) slanbuschii (Fabricius, 1787) from the Ryukyu Islands were considered as misidentifications of Ph. parviceps. A key to facilitate the identification of the five species known in Japan, Korea, and Taiwan is provided. Additionally, Ph. (N.) parviceps is recorded from China (Guangdong Province and Zhejiang Province) for the first time. 

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