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Genetic variation and phylogenetic relationship of Hypoderaeum conoideum(Bloch, 1782) Dietz, 1909(Trematoda: Echinostomatidae) inferred from nuclear and mitochondrial DNA sequences

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Asian Pacific Journal of Tropical Medicine 2020年第11期13卷 515-520页

作者： chairat tantrawatpan Weerachai Saijuntha Division of Cell Biology Department of Preclinical SciencesFaculty of MedicineThammasat UniversityRangsit CampusPathumthani 12120Thailand Walai Rukhavej Botanical Research Institute Mahasarakham UniversityMaha Sarakham 44150Thailand

Objective:To explore genetic variations of Hypoderaeum conoideum collected from domestic ducks from 12 different localities in Thailand and Lao PDR,as well as their phylogenetic relationship with American and European ***:The nucleotide sequences of their nuclear ribosomal DNA(ITS),mitochondrial cytochrome c oxidase subunit 1(CO1),and NADH dehydrogenase subunit 1(ND1)were used to analyze genetic diversity ***:We found relatively high levels of nucleotide polymorphism in ND1(4.02%),whereas moderate and low levels were observed in CO1(2.11%)and ITS(0.96%),*** on these polymorphisms,the 20 ND1,12 CO1,and 18 ITS haplotypes were classified,and several common haplotypes were observed in all *** least three major lineages,namely American,European and Asian lineages,have been classified by phylogenetic analyses based on ND1 ***:Our report demonstrates that the ND1 gene is the most suitable genetic marker to explore genetic variation and phylogenetic relationship of Hypoderaeum ***,a combination of all loci for ND1,CO1 and ITS would be of great value toward further genetic investigation of this endemic worldwide ***,comprehensive molecular genetic analyses of Hypoderaeum conoideum from its worldwide distribution is needed to further understanding of the evolutionary and systematic relationships of this parasite.

关键词： Echinostomes Genetic diversity Genetic differentiation Nuclear ribosomal DNA Cytochrome c oxidase subunit 1 NADH dehydrogenase subunit 1

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Multilocus enzyme electrophoresis analysis of Echinostoma revolutum and Echinostoma malayanum(Trematoda:Echinostomatidae) isolated from Khon Kaen Province,Thailand

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Asian Pacific Journal of Tropical Medicine 2010年第8期3卷 633-636页

作者： Weerachai Saijuntha Sumonta Tapdara chairat tantrawatpan Walai Rukhavej Botanical Research Institute(WRBRI) Mahasarakham UniversityMahasarakhamThailand Clinical Pathology Laboratory Amnatcharoen hospitalAmnatcharoenThailand Division of Cell Biology Department of Preclinical SciencesFaculty of MedicineThammasat UniversityRangsit CampusPathumthaniThailand

Objective:To explore the genetic variation and differentiation of 2 echinostomes from genus Echinostoma,*** revolutum(***) and Echinostoma malayanum(E. malayanum) from Khon Kaen Province,***:These parasites were compared at 22 enzymes encoding a presumptive 30 loci by using multilocus enzyme electrophoresis (MEE) ***:Twenty-two loci can be used as diagnostic markers to differentiate these 2 *** and *** had fixed genetic differences at 70%of loci, whereas both species had fixed genetic differences from the liver fluke,Opisthorchis viverrini at 91%of *** variation within a population of *** was observed at 5 polymorphic ***:MEE is a powerful technique to investigate genetic variation and differentiation of *** and ***.

关键词： Echinostoma Echinostomes Genetic variation Multilocus enzyme electrophoresis Allozyme

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Genetic Diversity and Population Structure of the Oriental Garden Lizard,Calotes versicolor Daudin,1802(Squamata:Agamidae)along the Mekong River in Thailand and Lao PDR

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Asian Herpetological Research 2021年第1期12卷 49-57页

作者： chairat tantrawatpan Weera THONGNETR Warayutt PILAP Warong SUKSAVATE Takeshi AGATSUMA Wittaya TAWONG Trevor N.PETNEY Weerachai SAIJUNTHA Division of Cell Biology Department of Preclinical SciencesFaculty of Medicine and Center of Excellence in Stem Cell ResearchThammasat UniversityPathumthani 12120Thailand Walai Rukhavej Botanical Research Institute Biodiversity and Conservation Research UnitMahasarakham UniversityMaha Sarakham 44150Thailand Department of Forest Biology Faculty of ForestryKasetsart UniversityBangkok 10900Thailand Division of Environmental Health Sciences Kochi Medical SchoolKochi UniversityOkoNankoku 783-8505Japan Department of Agricultural Science Faculty of AgricultureNatural Resources and EnvironmentNaresnan UniversityPhitsanulok 65000Thailand Departments of Zoology and Paleontology and Evolution.State Museum of Natural History Karlsruhe Karlsruhe 76133Germany

Calotes versicolor Daudin,1802,is geographically widespread along the Mekong River *** Mekong River is play important role as a significant natural barrier to several terrestrial animals living on different *** study aims to analyze the genetic diversity and population structure of *** populations collected from different sides of Mekong River using mitochondrial cytochrome c oxidase subunit 1(CO1)*** obtained sequences of 200 individuals from 18 sampling localities from left and right sides of the Mekong River in Lao PDR and Thailand ***,91 haplotypes were detected,which reflect high levels of genetic diversity in this species at the study *** network and phylogenetic analyses revealed that there were six major lineages(lineage C–lineage H)of *** populations within the Mekong River,whereas lineages A and B have previously been found from China and *** genetic distance among *** was significantly related to spatial distance,however,the Mekong River had no significant effect on genetic *** findings,together with previous studies,suggests that *** in Asia is a species complex with other cryptic lineages being likely but there is a need for further ***,comprehensive genetic,biological and ecological studies of *** should be conducted throughout its entire distribution range.

关键词： Agamid CO1 haplotype lizard phylogeny reptile

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Genetic Differentiation of the Forest Crested Lizards,Calotes emma alticristatus Schmidt,1925 and *** emma Gray,1845(Squamata:Agamidae)Relating to Climate Zones in Thailand

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Asian Herpetological Research 2020年第1期11卷 19-27页

作者： Weerachai SAIJUNTHA chairat tantrawatpan Warayutt PILAP Sutthira SEDLAK Khathalee SAKDAKHAM Paradee SRIPIROM Warong SUKSAVATE Watee KONGBUNTAD Wittaya TAWONG Walai Rukhavej Botanical Research Institute Biodiversity and Conservation Research UnitMahasarakham UniversityMaha Sarakham 44150Thailand Division of Cell Biology Department of Preclinical SciencesFaculty of MedicineThammasat UniversityRangsit CampusPathumthani 12120Thailand Department of Forest Biology Faculty of ForestryKasetsart UniversityBangkok 10900Thailand Program in Biotechnology Faculty of ScienceMaejo UniversityChiang Mai 50290Thailand Department of Agricultural Science Faculty of AgricultureNatural Resources and EnvironmentNaresuan UniversityPhitsanulok 65000Thailand

In Thailand,the forest crested lizard,Calotes emma consists of two subspecies,*** alticristatus Schmidt,1925 and *** emma Gray,*** study was performed to determine the genetic diversity and differentiation of *** from 16 different localities throughout Thailand.A total of 116 samples were analyzed using the mitochondrial cytochrome c oxidase subunit 1(CO1).Of these,65 and 51 of *** and *** were classified into 23(N1-N23)and 21(S1-S21)haplotypes,*** was no shared haplotype between subspecies or between different populations within each *** haplotypes were classified into four(north-A to north-D)and three(south-A to south-C)haplogroups of C.e aliristaus and ***,*** analyses retrieved four lineages(classified asⅠtoⅣ).LineagesⅠandⅡcontained the four haplogroups of ***,whereas lineageⅡandⅣcontained three haplogroups of *** two subspecies live separately in different climate zones,*** is found in an equatorial winter dry climate,whereas *** inha bits areas with an equa torial monsoonal clima te.

关键词： Agamid Reptile Genetic diversity Phylogeny CO1 Haplotype

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Genetic Structure of the Red-spotted Tokay Gecko, Gekko gecko(Linnaeus, 1758)(Squamata: Gekkonidae) from Mainland Southeast Asia

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Asian Herpetological Research 2019年第2期10卷 69-78页

作者： Weerachai SAIJUNTHA Sutthira SEDLAK Takeshi AGATSUMA Kamonwan JONGSOMCHAI Warayutt PILAP Watee KONGBUNTAD Wittaya TAWONG Warong SUKSAVATE Trevor N.PETNEY chairat tantrawatpan Walai Rukhavej Botanical Research Institute Biodiversity and Conservation Research UnitMahasarakham UniversityMaha Sarakham 44150Thailand Department of Environmental Medicine Kochi Medical SchoolKochi UniversityOkoNankokuKochi 783-8505Japan Department of Anatomy School of Medical SciencePhayao UniversityPhayao 56000Thailand Program in Biotechnology Faculty of ScienceMaejo UniversityChiang Mai 50290Thailand Department of Agricultural Science Faculty of AgricultureNatural Resources and EnvironmentNaresuan UniversityPhitsanulok 65000Thailand Department of Paleontology and Evolution State Museum of Natural History KarlsruheErbprinzenstrasse 13Karlsruhe 76133Germany Division of Cell Biology Department of Preclinical SciencesFaculty of MedicineThammasat UniversityRangsit CampusPathumthani 12120Thailand

This study was performed to explore the genetic diversity and genetic structure of red-spotted tokay geckos(Gekko gecko) from 23 different geographical areas in Thailand, Lao PDR and Cambodia. The mitochondrial tRNAGln/tRNA-Met/partial NADH dehydrogenase subunit 2 from 166 specimens was amplified and sequenced. A total of 54 different haplotypes were found. Highly significant genetic differences occurred between populations from different localities. The haplotype network revealed six major haplogroups(G1 to G6) belonging to different clades(clade A–E). Clade D and clade E were newly observed in this study. Haplogroup G4(clade D) was a sympatric population with haplogroup G1(clade B). The populations from northern Thailand were divided into two distinct haplogroups separated by mountain range. Genetic structure and genetic differentiation of the tokay in Southeast Asia was related to the geographical region sampled, spatial distance and natural barriers. Our results indicate that red-spotted tokay geckos from mainland Southeast Asia are cryptically diverse. Morphological comparisons, in addition to an intensive genetic investigation covering the whole species range, are needed to clarify the systematic and population structure of this species group.

关键词： Genetic diversity Gene flow Natural barrier Phylogenetic tree Haplotype network

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