Back to Search Start Over

Whole-genome sequences restore the original classification of dabbling ducks (genus Anas)

Authors :
Zhou Zhang
Huashui Ai
Lusheng Huang
Source :
Genetics Selection Evolution, Vol 56, Iss 1, Pp 1-7 (2024)
Publication Year :
2024
Publisher :
BMC, 2024.

Abstract

Abstract Anas, is a genus of dabbling ducks and encompasses a considerable number of species, among which some are the progenitors of domestic ducks. However, the taxonomic position of the Anas genus remains uncertain because several of its species, initially categorized as Anas based on morphological characteristics, were subsequently reclassified and grouped with the South American genus Tachyeres, primarily based on analysis of their mitochondrial gene sequences. Here, we constructed a phylogenetic tree using nine of our recently assembled Anas genomes, two Tachyeres genomes, and one Cairina genome that are publicly available. The results showed that the Northern shoveler (Anas clypeata) and Baikal teal (Anas formosa) clustered with the other Anas species at the whole-genome level rather than with the Steamer ducks (genus Tachyeres). Therefore, we propose to restore the original classification of the Anas genus, which includes the Northern shoveler and Baikal teal species, 47 species in total. Moreover, our study unveiled extensive incomplete lineage sorting and an ancient introgression event from Tachyeres to Anas, which has led to notable phylogenetic incongruence within the Anas genome. This ancient introgression event not only supports the theory that Anas originated in South America but also that it played a significant role in shaping the evolutionary trajectory of Anas, including the domestic duck.

Details

Language :
German, English, French
ISSN :
12979686
Volume :
56
Issue :
1
Database :
Directory of Open Access Journals
Journal :
Genetics Selection Evolution
Publication Type :
Academic Journal
Accession number :
edsdoj.90fc09c1a254510b85dfa831193eb50
Document Type :
article
Full Text :
https://doi.org/10.1186/s12711-024-00904-8