Conservation Genetics, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 16, 2024
Language: Английский
Molecular Ecology, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 14, 2024
ABSTRACT Genomic resources are valuable to examine historical demographic patterns and their effects better inform management conservation of threatened species. We evaluated population trends genome‐wide variation in the near‐threatened Orange‐breasted Falcon ( Falco deiroleucus ) its more common sister species, Bat F. rufigularis ), explore how two species differ genomic diversity as influenced by contrasting long‐term histories. generated aligned whole genome resequencing data for 12 Falcons 9 an annotated Gyrfalcon rusticolus reference that retained approximately 22.4 million biallelic autosomal SNPs (chromosomes 1–22). Our analyses indicated much lower compared Falcons. All sampled were significantly inbred than Falcons, with values similar those observed island‐mainland comparisons. The distribution runs homozygosity showed suggesting low size possibility bottlenecks consistently larger populations Analysis genetic load suggests less likely experience inbreeding depression due reduced but at elevated risk from fixation deleterious gene variants perhaps a adaptive potential. These highlight differences demography closely related have current should result differing strategies continued conservation.
Language: Английский
Citations
1
Authorea (Authorea), Journal Year: 2024, Volume and Issue: unknown
Published: July 16, 2024
Understanding the genetic basis of local adaptation and distribution standing variation is imperative for biodiversity conservation as species decline globally. The Atlantic song sparrow (Melospiza melodia atlantica) a specialist subspecies concern that adapted to coastal habitats eastern North America interbreeds with widespread, parapatric generalist subspecies, (M. m. melodia). Because sparrows offer an ideal opportunity explore evolutionary dynamics gene flow, we examined genomic architecture divergence using whole-genome sequencing these subspecies. We identified polygenic adaptation, candidate genes related osmoregulation, plumage pigmentation, bill size. Divergent were dispersed throughout homogenous background, demonstrating strong natural selection key force maintaining differentiation between despite flow. Notably, some located near centromeres telomeres, suggesting regions suppressed recombination may play role in maintenance flow this system. found population structure within sparrow, southern barrier islands making up portion range each island comprising distinct cluster, which inform future management decisions. This system emphasizes need high-resolution data characterize adaptive effective strategies systems extensive
Language: Английский
Citations
0
Integrative Zoology, Journal Year: 2024, Volume and Issue: unknown
Published: July 29, 2024
Abstract Avian species diversity in Southern Africa is remarkably high, yet the mechanisms responsible for that are poorly understood. While this particularly true with respect to endemic subregion, it unclear as how more broadly distributed African may have colonized southern Africa. One process part account high bird a “species pump” model, wherein region was repeatedly by lineages from areas further north: pattern related climate cycling and eastern arid corridor. Once occupying Africa, its many varied biomes, possible affected generating genetic multiple refugia, recently shown several species. Here, we used mtDNA address these questions widespread, sedentary habitat generalist species, familiar chat ( Oenanthe familiaris ). The phylogenetic structure suggests north‐to‐south colonization pattern, supporting model. Haplotype partitioned into two distinct clusters: Malawi (East Africa). haplotypes were not geographically partitioned, hypothesize has arisen because generalist, such resilient habitat‐altering perturbations. Based on our results, discuss validity of currently recognized subspecies.
Language: Английский
Citations
0
Conservation Genetics, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 16, 2024
Language: Английский
Citations
0