Boni Amin Laskar, Harikumar Adimalla, Dhriti Banerjee, Se Hyun Song, Hye-Eun Kang, Hyun-Woo Kim, Shantanu Kundu
{"title":"东高止山脉（Teleostei: Channidae）的综合形态测量学和系统发育研究揭示了侏儒蛇头（Channa kelaartii）在印度和斯里兰卡的跨界传播。","authors":"Boni Amin Laskar, Harikumar Adimalla, Dhriti Banerjee, Se Hyun Song, Hye-Eun Kang, Hyun-Woo Kim, Shantanu Kundu","doi":"10.1007/s11033-025-10610-3","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>The biogeography of Eastern Ghats channids, including the Dwarf Snakehead Channa kelaartii, poses a complex challenge, especially with recent evidence confirming its presence in both India and Sri Lanka. While the Sri Lankan population is well- documented through integrative approach, the Indian population remains unexplored, requiring further research to elucidate its genetic structure and phylogenetic relationships.</p><p><strong>Methods: </strong>This study examines the morphology and mtCOI-based genetic diversity of 10 channid species, including seven from the Gachua complex. An integrative approach is also applied to assess population-level variation in C. kelaartii, aiming to clarify its genetic diversity with geographically isolated Sri Lankan populations.</p><p><strong>Results: </strong>Morphological analysis distinctly identified all Channa species and indicated a close resemblance between Indian and Sri Lankan C. kelaartii populations. Genetic analysis revealed considerable divergence between C. kelaartii and other members of the Gachua group, ranging from 6.15 to 21.31%. Bayesian phylogenetic reconstruction robustly resolved all species, including C. kelaartii. Combined mitochondrial data from India and Sri Lanka revealed 13 haplotypes, with mean intra-regional genetic distances of 0.5% (Sri Lanka) and 0.7% (India), and maximum divergences of 1.24% and 2.29%, respectively. A haplotype from the Western Ghats exhibited only 0.17% divergence from Sri Lankan populations, indicating potential historical gene flow between the two regions.</p><p><strong>Conclusions: </strong>Overall, this study provides a comprehensive assessment of Channa diversity in the Eastern Ghats and confirms the presence of C. kelaartii in both peninsular India and Sri Lanka, likely shaped by historical land connections and freshwater dispersal across the Palk Isthmus during the Plio-Pleistocene.</p>","PeriodicalId":18755,"journal":{"name":"Molecular Biology Reports","volume":"52 1","pages":"499"},"PeriodicalIF":2.6000,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Integrative morphometric and phylogenetic insights into Eastern Ghats channids (Teleostei: Channidae) unveil the transboundary dispersal of the Dwarf Snakehead (Channa kelaartii) across India and Sri Lanka.\",\"authors\":\"Boni Amin Laskar, Harikumar Adimalla, Dhriti Banerjee, Se Hyun Song, Hye-Eun Kang, Hyun-Woo Kim, Shantanu Kundu\",\"doi\":\"10.1007/s11033-025-10610-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Background: </strong>The biogeography of Eastern Ghats channids, including the Dwarf Snakehead Channa kelaartii, poses a complex challenge, especially with recent evidence confirming its presence in both India and Sri Lanka. While the Sri Lankan population is well- documented through integrative approach, the Indian population remains unexplored, requiring further research to elucidate its genetic structure and phylogenetic relationships.</p><p><strong>Methods: </strong>This study examines the morphology and mtCOI-based genetic diversity of 10 channid species, including seven from the Gachua complex. An integrative approach is also applied to assess population-level variation in C. kelaartii, aiming to clarify its genetic diversity with geographically isolated Sri Lankan populations.</p><p><strong>Results: </strong>Morphological analysis distinctly identified all Channa species and indicated a close resemblance between Indian and Sri Lankan C. kelaartii populations. Genetic analysis revealed considerable divergence between C. kelaartii and other members of the Gachua group, ranging from 6.15 to 21.31%. Bayesian phylogenetic reconstruction robustly resolved all species, including C. kelaartii. Combined mitochondrial data from India and Sri Lanka revealed 13 haplotypes, with mean intra-regional genetic distances of 0.5% (Sri Lanka) and 0.7% (India), and maximum divergences of 1.24% and 2.29%, respectively. A haplotype from the Western Ghats exhibited only 0.17% divergence from Sri Lankan populations, indicating potential historical gene flow between the two regions.</p><p><strong>Conclusions: </strong>Overall, this study provides a comprehensive assessment of Channa diversity in the Eastern Ghats and confirms the presence of C. kelaartii in both peninsular India and Sri Lanka, likely shaped by historical land connections and freshwater dispersal across the Palk Isthmus during the Plio-Pleistocene.</p>\",\"PeriodicalId\":18755,\"journal\":{\"name\":\"Molecular Biology Reports\",\"volume\":\"52 1\",\"pages\":\"499\"},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2025-05-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Molecular Biology Reports\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://doi.org/10.1007/s11033-025-10610-3\",\"RegionNum\":4,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"BIOCHEMISTRY & MOLECULAR BIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Molecular Biology Reports","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1007/s11033-025-10610-3","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"BIOCHEMISTRY & MOLECULAR BIOLOGY","Score":null,"Total":0}
Integrative morphometric and phylogenetic insights into Eastern Ghats channids (Teleostei: Channidae) unveil the transboundary dispersal of the Dwarf Snakehead (Channa kelaartii) across India and Sri Lanka.
Background: The biogeography of Eastern Ghats channids, including the Dwarf Snakehead Channa kelaartii, poses a complex challenge, especially with recent evidence confirming its presence in both India and Sri Lanka. While the Sri Lankan population is well- documented through integrative approach, the Indian population remains unexplored, requiring further research to elucidate its genetic structure and phylogenetic relationships.
Methods: This study examines the morphology and mtCOI-based genetic diversity of 10 channid species, including seven from the Gachua complex. An integrative approach is also applied to assess population-level variation in C. kelaartii, aiming to clarify its genetic diversity with geographically isolated Sri Lankan populations.
Results: Morphological analysis distinctly identified all Channa species and indicated a close resemblance between Indian and Sri Lankan C. kelaartii populations. Genetic analysis revealed considerable divergence between C. kelaartii and other members of the Gachua group, ranging from 6.15 to 21.31%. Bayesian phylogenetic reconstruction robustly resolved all species, including C. kelaartii. Combined mitochondrial data from India and Sri Lanka revealed 13 haplotypes, with mean intra-regional genetic distances of 0.5% (Sri Lanka) and 0.7% (India), and maximum divergences of 1.24% and 2.29%, respectively. A haplotype from the Western Ghats exhibited only 0.17% divergence from Sri Lankan populations, indicating potential historical gene flow between the two regions.
Conclusions: Overall, this study provides a comprehensive assessment of Channa diversity in the Eastern Ghats and confirms the presence of C. kelaartii in both peninsular India and Sri Lanka, likely shaped by historical land connections and freshwater dispersal across the Palk Isthmus during the Plio-Pleistocene.
期刊介绍：
Molecular Biology Reports publishes original research papers and review articles that demonstrate novel molecular and cellular findings in both eukaryotes (animals, plants, algae, funghi) and prokaryotes (bacteria and archaea).The journal publishes results of both fundamental and translational research as well as new techniques that advance experimental progress in the field and presents original research papers, short communications and (mini-) reviews.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
