Reassessment of the taxonomic identity of Artemia (Crustacea: Anostraca) from Kyêbxang Co (Tibet)$bevidence for Artemia sorgeloosi rather than Artemia tibetiana

Correct species identification is essential for understanding biodiversity and managing ecosystems. The bisexual Brine Shrimp Artemia tibetiana and Artemia sorgeloosi represent two regional endemic taxa on the Tibetan Plateau, yet the taxonomic status of several populations remains unresolved. In pa...

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Main Authors: Yang, Chaojie (Author) , Chen, Zijian (Author) , Asem, Alireza (Author) , Eimanifar, Amin (Author) , Shen, Chun-Yang (Author) , Zhang, Hongyue (Author) , Jia, Chuan (Author) , Wink, Michael (Author)
Format: Article (Journal)
Language:English
Published: 28 February 2026
In: Diversity
Year: 2026, Volume: 18, Issue: 3, Pages: 1-11
ISSN:1424-2818
DOI:10.3390/d18030148
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.3390/d18030148
Verlag, lizenzpflichtig, Volltext: https://www.mdpi.com/1424-2818/18/3/148
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Author Notes:Chaojie Yang, Zijian Chen, Alireza Asem, Amin Eimanifar, Chun-Yang Shen, Hongyue Zhang, Chuan Jia and Michael Wink
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Summary:Correct species identification is essential for understanding biodiversity and managing ecosystems. The bisexual Brine Shrimp Artemia tibetiana and Artemia sorgeloosi represent two regional endemic taxa on the Tibetan Plateau, yet the taxonomic status of several populations remains unresolved. In particular, the Artemia population from Kyêbxang Co (Tibet, China) has been inconsistently assigned to either A. tibetiana or A. sorgeloosi in recent ecological and genomic studies, lacking formal taxonomic evaluation. To resolve this ambiguity, we conducted a precise biosystematic assessment based on DNA analyses: In this study, we performed a taxonomic reassessment of the Kyêbxang Co Artemia population, based on complete mitochondrial genome sequences and mitochondrial gene COI haplotype analyses. Phylogenetic analysis consistently positioned the Kyêbxang Co population within the A. sorgeloosi clade, clearly separated from the polyphyletic A. tibetiana lineage. Genetic distance values corroborated this placement, revealing minimal divergence from A. sorgeloosi (0.31%) but substantial divergence from A. tibetiana (9.07%). The COI haplotype network further indicated an exclusive maternal gene pool shared with topotypic A. sorgeloosi. Collectively, these results provide conclusive molecular evidence that the Brine Shrimp population of Kyêbxang Co belongs to A. sorgeloosi, not A. tibetiana.
Item Description:Veröffentlicht: 28. Februar 2026
Gesehen am 29.04.2026
Physical Description:Online Resource
ISSN:1424-2818
DOI:10.3390/d18030148