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Short-term evolutionary implications of an introgressed size-determining supergene in a vulnerable population.
Nat Commun
January 2025
Florida Museum of Natural History, Dickinson Hall, 1659 Museum Road, Gainesville, FL, 32611, USA.
The Thorny Skate (Amblyraja radiata) is a vulnerable species displaying a discrete size-polymorphism in the northwest Atlantic Ocean (NWA). We conducted whole genome sequencing of samples collected across its range. Genetic diversity was similar at all sampled sites, but we discovered a ~ 31 megabase bi-allelic supergene associated with the size polymorphism, with the larger size allele having introgressed in the last ~160,000 years B.
View Article and Find Full Text PDFTranslocating individuals from multiple source populations is one way to bolster genetic variation and avoid inbreeding in newly established populations. However, mixing isolated populations, especially from islands, can potentially lead to outbreeding depression and/or assortative mating, which may limit interbreeding between source populations. Here, we investigated genetic consequences of mixing individuals from two island populations of the dibbler () in an island translocation.
View Article and Find Full Text PDFIntraspecific variation and functional study of VERL polymorphism in Pacific abalone (Haliotis discus hannai Ino) and giant abalone (H. gigantea Gmelin).
Int J Biol Macromol
January 2025
State Key Laboratory of Mariculture Breeding, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China; Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China. Electronic address:
Article Synopsis
- Sperm and eggs have specific proteins called gamete recognition proteins (GRPs) that influence their compatibility in fertilization, and this study focuses on the VERL receptor in two abalone species.
- The full-length VERL sequences were found to be different in Pacific abalone (11,373 bp) and giant abalone (9,405 bp), with variations in their amino acid compositions and repeats.
- Notably, the study discovered a relationship between VERL genotypes and mating preferences in giant abalone, highlighting amino acid diversity's role in fertilization and providing insights for improving abalone breeding practices.
Comparison of the composition, immunological activity and anti-fatigue effects of different parts in sika deer antler.
Front Pharmacol
December 2024
College of Animal Science and Technology, Jilin Agricultural University, Changchun, China.
Background: Sika deer (, 1838) antler is a highly esteemed tonic renowned for its abundant assortment of polypeptides, polysaccharides, amino acids, and minerals, and is recognized for its multifarious pharmacological properties. However, limited research has been conducted regarding the variation in composition of deer antlers between the upper and basal sections, as well as their pharmacological effects on immunological activity and anti-fatigue in mice. The objective of this study was to conduct a comprehensive analysis on the appearance, chemical composition, and pharmacological effects of different components within sika deer antlers.
View Article and Find Full Text PDFMICCAI-CDMRI 2023 QuantConn Challenge Findings on Achieving Robust Quantitative Connectivity through Harmonized Preprocessing of Diffusion MRI.
ArXiv
November 2024
Department of Computer Science, Vanderbilt University, Nashville, TN.
White matter alterations are increasingly implicated in neurological diseases and their progression. International-scale studies use diffusion-weighted magnetic resonance imaging (DW-MRI) to qualitatively identify changes in white matter microstructure and connectivity. Yet, quantitative analysis of DW-MRI data is hindered by inconsistencies stemming from varying acquisition protocols.
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