Large-scale fossil records analysis reveals prehistoric extinction mechanisms of woolly rhinoceros (Coelodonta antiquitatis).

Climate oscillations and prehistoric human activity during the Middle-Late Pleistocene profoundly affected the population fluctuations and extinctions of megafauna, especially the extinct woolly rhinoceros. Fordham et al. (2024) recently proposed new solutions based on fossil records, paleoclimates, and prehistoric human activities data to reconstruct an explicit process-driven model, resulting in high-resolution population dynamics of the woolly rhinoceros.

Genomic diversity and demographic history of the endangered Sichuan hill-partridge (Arborophila rufipectus).

Species conservation can be improved by knowledge of genetic diversity and demographic history. The Sichuan hill-partridge (Arborophila rufipectus, SP) is an endangered species endemic to the mountains in southwestern China. However, little is known about this species' genomic variation and demographic history.

Recent Advances in Genetics and Genomics of Snub-Nosed Monkeys () and Their Implications for Phylogeny, Conservation, and Adaptation.

The snub-nosed monkey genus (Colobinae) comprises five species (, , , , and ). They are range-restricted species occurring only in small areas in China, Vietnam, and Myanmar. All extant species are listed as endangered or critically endangered by the International Union for Conservation of Nature (IUCN) Red List, all with decreasing populations.

Uncovering the enigmatic evolution of bears in greater depth: The hybrid origin of the Asiatic black bear.

Bears are fascinating mammals because of their complex pattern of speciation and rapid evolution of distinct phenotypes. Interspecific hybridization has been common and has shaped the complex evolutionary history of bears. In this study, based on the largest population-level genomic dataset to date involving all Ursinae species and recently developed methods for detecting hybrid speciation, we provide explicit evidence for the hybrid origin of Asiatic black bears, which arose through historical hybridization between the ancestor of polar bear/brown bear/American black bears and the ancestor of sun bear/sloth bears.

Genetic Diversity, Inbreeding Level, and Genetic Load in Endangered Snub-Nosed Monkeys ().

The snub-nosed monkey genus () comprises five closely related species (, and ). All are among the world's rarest and most endangered primates. However, the genomic impact associated with their population decline remains unknown.

Molecular Genetics Supports a Potential Fifth Asian Pangolin Species (Mammalia, Pholidota, ).

Recently, two mitochondrial haplotypes, H4 and H8, of sp. were found in two seizures in Hong Kong that do not correspond to , or of Asian pangolin species or any African pangolin species. It was proposed that both haplotypes derived from , an unknown lineage of , or a thus far unidentified Asian pangolin species ( sp.

The Origin and Population History of the Endangered Golden Snub-Nosed Monkey (Rhinopithecus roxellana).

The origin and population history of the endangered golden snub-nosed monkey (Rhinopithecus roxellana) remain largely unavailable and/or controversial. We here integrate analyses of multiple genomic markers, including mitochondrial (mt) genomes, Y-chromosomes, and autosomes of 54 golden monkey individuals from all three geographic populations (SG, QL, and SNJ). Our results reveal contrasting population structures.

Sonic crystal with open resonant cavities.

An improved scattering matrix method is developed to study a two-dimensional air-rigid sonic crystal with open resonant cavity, and the band structure and transmission properties are investigated. Numerical results show that both the band structure and the transmission coefficient are sensitive to the shape of the resonant cavity. The relationship between the resonant band gap and the shape of the resonant cavity is given.