Morphology and Mitochondrial Lineage Investigations Corroborate the Systematic Status and Pliocene Colonization of Suncus niger (Mammalia: Eulipotyphla) in the Western Ghats Biodiversity Hotspot of India DOI Open Access
Shantanu Kundu, Manokaran Kamalakannan, Ahran Kim

et al.

Genes, Journal Year: 2023, Volume and Issue: 14(7), P. 1493 - 1493

Published: July 22, 2023

The Indian highland shrew, Suncus niger (Horsfield, 1851), is the least studied soricid species from its original range distribution in Southern India, with several systematics conundrums. Following discovery 1851, was synonymized montanus (Kelaart, 1850) (endemic to Sri Lanka) and subsequently identified as a separate population. However, systematic status of S. topotype specimens India has yet be determined through an integrated approach. Both taxonomy mitochondrial genetic data (Cytochrome b 16S ribosomal RNA) were used re-examine niger. mtCytb gene clearly distinguished topotypic other species, high divergences varying 8.49% 26.29%. Further, Bayesian maximum likelihood topologies segregated congeners corroborated sister relationship stoliczkanus expected divergence late Pliocene (2.62 MYA). TimeTree analysis also exhibits strong matrilineal affinity dayi India) toward African species. current study hypothesizes that ancestor soricids evolved Africa lineages shifted by plate tectonic events colonized different continents distinct during Miocene (Tortonian) Holocene era. In addition new expansion elevation records Central Western Ghats, we propose additional sampling across distribution, well use multiple markers, may useful determining diversity population structure this endemic present recommends more molecular on Soricomorphs lineages, estimates their times, will shed light evolution these small mammals Earth.

Language: Английский

Ancient DNA Clarifies the Identity and Geographic Origin of the Holotype of the Genus Ctenomys DOI Creative Commons
Renan Maestri, Gislene L. Gonçalves,

Violaine Nicolas-Colin

et al.

Published: Oct. 8, 2024

_Ctenomys_ Blainville 1826 ranks among the top ten most diverse mammal genera in terms of species richness. However, taxonomic history _Ctenomys brasiliensis_ Blainville,1826, corresponding type species, has long been obscured by a dearth information regarding collection data material, compounded an elusive geographic origin. Here, employing ancient DNA methodology, we sequenced complete mitogenome remaining specimen and conducted extensive historical investigation to correlate originally described locality names with present-day locales South America. Our analysis unequivocally confirms that corresponds currently designated as minutus_ Nehring, 1887. This resolution lays rest century-old debate surrounding provenance specimen, rejecting prior hypotheses placed its site southeastern Brazil or Uruguay. Instead, our evidence suggests it was likely obtained from third location southernmost Brazil. Previous analyses overlooked this new due confusion nomenclature labeling errors, issues rectified combined mitogenomic approach. Furthermore, quantitative morphological boost findings, demonstrating closer affinity between _C. within same group. Accordingly, validate propose junior synonym. study underscores importance robust confirming identity origins specimens, especially for similar phenotypes, specimens collected centuries ago.

Language: Английский

Citations

0
Morphology and Mitochondrial Lineage Investigations Corroborate the Systematic Status and Pliocene Colonization of Suncus niger (Mammalia: Eulipotyphla) in the Western Ghats Biodiversity Hotspot of India DOI Open Access
Shantanu Kundu, Manokaran Kamalakannan, Ahran Kim

et al.

Genes, Journal Year: 2023, Volume and Issue: 14(7), P. 1493 - 1493

Published: July 22, 2023

The Indian highland shrew, Suncus niger (Horsfield, 1851), is the least studied soricid species from its original range distribution in Southern India, with several systematics conundrums. Following discovery 1851, was synonymized montanus (Kelaart, 1850) (endemic to Sri Lanka) and subsequently identified as a separate population. However, systematic status of S. topotype specimens India has yet be determined through an integrated approach. Both taxonomy mitochondrial genetic data (Cytochrome b 16S ribosomal RNA) were used re-examine niger. mtCytb gene clearly distinguished topotypic other species, high divergences varying 8.49% 26.29%. Further, Bayesian maximum likelihood topologies segregated congeners corroborated sister relationship stoliczkanus expected divergence late Pliocene (2.62 MYA). TimeTree analysis also exhibits strong matrilineal affinity dayi India) toward African species. current study hypothesizes that ancestor soricids evolved Africa lineages shifted by plate tectonic events colonized different continents distinct during Miocene (Tortonian) Holocene era. In addition new expansion elevation records Central Western Ghats, we propose additional sampling across distribution, well use multiple markers, may useful determining diversity population structure this endemic present recommends more molecular on Soricomorphs lineages, estimates their times, will shed light evolution these small mammals Earth.

Language: Английский

Citations

0