Revised phylogeography of the common brushtail possum (Trichosurus vulpecula) reveals new insights into genetic structure across Australia

Zoological Journal of the Linnean Society, Journal Year: 2025, Volume and Issue: 204(1)

Published: May 1, 2025

Abstract Understanding genetic relationships within species is essential for identifying distinct lineages and informing conservation strategies, particularly with fragmented or widespread geographic distributions. One such that has suffered declines across Australia, despite remaining common in some areas, the brushtail possum (Trichosurus vulpecula), a nocturnal arboreal marsupial. Previous studies on possums had limited sampling, which precluded comprehensive assessment of genus. Using both single nucleotide polymorphism markers mitochondrial cytochrome b gene, this study employed phylogenetics, ancestry coefficients, tested differentiation, to examine population structure Australia. Our results indicate current subspecies’ classifications T. vulpecula do not align structure, as Western Australian Pilbara Midwest populations, currently defined subspecies Trichosurus hypoleucus, are instead genetically similar south-eastern central v. vulpecula. These findings have important implications including translocations possums, highlight importance sampling wide-ranging species.

Language: Английский

Translocations, rising populations, and phylogeographic consequences: genomic implications for conservation of introduced Aoudad (Ammotragus lervia) in the southwestern United States

Journal of Mammalogy, Journal Year: 2024, Volume and Issue: 105(6), P. 1353 - 1364

Published: July 2, 2024

Abstract Over the last century, Texas has been inundated with exotic ungulates, as many 67 species represented by captive and free-ranging populations. One of most successful to have established populations is Aoudad (Ammotragus lervia). Herein, we expand on previous genetic studies in including new genomic profiles based double-digest restriction site-associated DNA sequencing methods intent better understanding effects >70 years human-mediated translocations, population expansion, gene flow among Using a range 4,338 5,529 single-nucleotide polymorphisms obtained from 73 individuals that potentially A. l. blainei, lervia, sahariensis, measured patterns diversity connectivity between source California New Mexico resultant aoudad Texas. Principal component analyses identified phylogeographically structured across Further, signature isolation distance To assess geographic regions facilitated or blocked populations, used estimation effective migration surfaces, which indicated 3 barriers movement well close proximity. Comparison mtDNA haplogroups nuclear genotypes examined subspecies were discordant, indicating current subspecific taxonomic classification needs refinement. Given vulnerable status their native northern Africa exponential growth potential competition ungulates Texas, propose efforts manage non-native should strive maintain preserve unique units while minimizing other detriments Conservation are especially important given within Africa.

Language: Английский

Genetic characterisation of the Nero d’Aspromonte pig population in Southern Italy

Italian Journal of Animal Science, Journal Year: 2024, Volume and Issue: 23(1), P. 1358 - 1372

Published: Sept. 6, 2024

Language: Английский