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       Microdousamblyrhynchos sp. nov., a new member of the small-toothed sleepers (Teleostei, Gobiiformes, Odontobutidae) from Guangxi, southern China

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      Author(s): 1 , 2 , 1 ,
      Publication date (Electronic):
      Journal: ZooKeys
      Publisher: Pensoft Publishers
      Keywords: Freshwater sleepers, morphology, phylogeny, taxonomy, Xijiang River

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          Abstract

          Microdous amblyrhynchos , a new species, the second one in the genus, from the family Odontobutidae , is described from the Hongshui River, in the upper reaches of the Xijiang River of the Pearl River drainage, Baise City, Guangxi Zhuang Autonomous Region, southern China. This species is distinguished from its only congener, M. chalmersi , by the blunt snout (vs. pointed); mean snout length/head length ratio 0.27 (vs. 0.3); eye not extending outward (vs. protruding); mean interorbital width/head length ratio 0.25 (vs. 0.11). Additionally, the results of molecular phylogenetic analysis confirmed that M. amblyrhynchos sp. nov. is distinct from its sister species, M. chalmersi .

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          MEGA11: Molecular Evolutionary Genetics Analysis Version 11

          Koichiro Tamura, Glen Stecher, Sudhir Kumar (2021)
          The Molecular Evolutionary Genetics Analysis (MEGA) software has matured to contain a large collection of methods and tools of computational molecular evolution. Here, we describe new additions that make MEGA a more comprehensive tool for building timetrees of species, pathogens, and gene families using rapid relaxed-clock methods. Methods for estimating divergence times and confidence intervals are implemented to use probability densities for calibration constraints for node-dating and sequence sampling dates for tip-dating analyses. They are supported by new options for tagging sequences with spatiotemporal sampling information, an expanded interactive Node Calibrations Editor , and an extended Tree Explorer to display timetrees. Also added is a Bayesian method for estimating neutral evolutionary probabilities of alleles in a species using multispecies sequence alignments and a machine learning method to test for the autocorrelation of evolutionary rates in phylogenies. The computer memory requirements for the maximum likelihood analysis are reduced significantly through reprogramming, and the graphical user interface has been made more responsive and interactive for very big data sets. These enhancements will improve the user experience, quality of results, and the pace of biological discovery. Natively compiled graphical user interface and command-line versions of MEGA11 are available for Microsoft Windows, Linux, and macOS from www.megasoftware.net .
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            Biogeographical Evidences Help Revealing the Origin of Hainan Island

            Hua Zhu (2016)
            Both the continental or island origin of Hainan, and the Indo-Malaysian or East Asian affinity of its flora, are debatable. In this study, 196 families, 1283 genera and 3894 species of Hainan plants were recognized. Patterns of seed plant distribution were quantified at the generic and the family levels. The floras of Vietnam, and the adjacent Guangxi and Guangdong provinces of mainland China, were compared with Hainan. The results showed that the flora of Hainan Island is dominated by families and genera with tropical distributions. Among its floristic elements, tropical Asian distributions make up 23.85% of the total flora, while East Asian distributions contribute only 3.74%. There are only 7 genera and c. 10% of species endemic to Hainan Island. The Hainan flora has strong similarities to the flora of Vietnam at the family and the generic levels, and also to the flora of Guangxi, but less with the adjacent Guangdong province. The main conclusions are: Hainan’s flora is tropical in nature with a strongly tropical Asian affinity, and it has very low endemism at the generic and species levels, which implies a continental origin. We conjecture that Hainan Island could have been adjacent to northern Vietnam and the Guangxi at least in Eocene. This suggestion is supported by palaeobotanical, palaeomagnetic and volcanism studies.
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              Reconstruction of paleovegetation and paleoclimate in the Early and Middle Eocene, Hainan Island, China

              Khum Paudayal, Volker Mosbrugger, David K. Ferguson … (2009)
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                Author and article information

                Contributors
                Chenhong Li:
                ORCID: https://orcid.org/0000-0003-3075-1756
                Journal
                Journal ID (nlm-ta): Zookeys
                Journal ID (iso-abbrev): Zookeys
                Journal ID (publisher-id): 2
                Journal ID (index): urn:lsid:arphahub.com:pub:45048D35-BB1D-5CE8-9668-537E44BD4C7E
                Journal ID (aggregator): urn:lsid:zoobank.org:pub:91BD42D4-90F1-4B45-9350-EEF175B1727A
                Title: ZooKeys
                Publisher: Pensoft Publishers
                ISSN (Print): 1313-2989
                ISSN (Electronic): 1313-2970
                Publication date Collection: 2023
                Publication date (Electronic): 10 March 2023
                Volume: 1153
                Pages: 1-13
                Affiliations
                [1 ] Shanghai Universities Key Laboratory of Marine Animal Taxonomy and Evolution, Shanghai Ocean University, Shanghai 201306, China
                [2 ] Engineering Research Center of Environmental DNA and Ecological Water Health Assessment, Shanghai Ocean University, Shanghai 201306, China
                [3 ] Guangxi Duan Yao Autonomous County Aquatic Technology Station, Duan 530700, China
                Author notes
                Corresponding author: Chenhong Li (chli@shou.edu.cn)

                Academic editor: Nina Bogutskaya

                Author information
                https://orcid.org/0000-0001-5039-7075
                https://orcid.org/0000-0003-3075-1756
                Article
                Publisher ID: 97139
                DOI: 10.3897/zookeys.1153.97139
                PMC ID: 10207926
                SO-VID: c6ef5395-bf14-4000-ad58-f1b00c529c29
                Copyright © Jiantao Hu, Chun Lan, Chenhong Li
                License:

                This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                History
                Date received : 04 November 2022
                Date accepted : 20 February 2023
                Funding
                Funded by: Science and Technology Commission of Shanghai Municipality 501100003399 http://doi.org/10.13039/501100003399
                Categories
                Subject: Research Article
                Subject: Actinopterygii
                Subject: Animalia
                Subject: Chordata
                Subject: Odontobutidae
                Subject: Osteichthyes
                Subject: Perciformes
                Subject: Pisces
                Subject: Vertebrata
                Subject: Systematics
                Subject: Taxonomy
                Subject: Cenozoic
                Subject: Neogene
                Subject: Asia
                Subject: Central Asia
                Subject: China

                ScienceOpen disciplines: Animal science & Zoology
                Keywords: freshwater sleepers,morphology,phylogeny,taxonomy,xijiang river
                Data availability:
                ScienceOpen disciplines: Animal science & Zoology
                Keywords: freshwater sleepers, morphology, phylogeny, taxonomy, xijiang river

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