AI Article Synopsis
- - Different animal groups have unique energy needs based on their locomotion, and this study focuses on flying squirrels (Pteromyini) and tree squirrels (Sciurini), which belong to the same family but have different movement styles and energy requirements.
- - By analyzing mitochondrial genome sequences from 13 Pteromyini and 117 Sciurini species, the study found distinct evolutionary pressures on the protein-coding genes that produce energy, indicating different selective influences on these two squirrel tribes.
- - The analysis showed that some genes in flying squirrels faced less selection pressure, while others in tree squirrels experienced stronger and more varied selection, highlighting the genetic adaptations to their different locomotion modes.
Article Abstract
Different animal groups with varying locomotion modes may have unique energy requirements. Mitochondria produce adenosine triphosphate (ATP) and reactive oxygen species via oxidative phosphorylation to support organisms energy requirements. The tribes Pteromyini (flying squirrels) and Sciurini (tree squirrels), two closely related taxa within the family Sciuridae, exhibit distinct locomotion modes, energy requirements, and likely face different selective pressures on mitochondrial protein-coding genes (PCGs). We analysed 13 mitochondrial genome sequences from species belonging to the tribe Pteromyini and 117 from species belonging to the tribe Sciurini. Phylogenetic analysis revealed Pteromyini and Sciurini formed a sister relationship within the family Sciuridae. Among the 13 PCGs, exhibited the highest dN/dS values, while showed the lowest. The background selection ratio (ω) values for six genes (, , , , , and ) in Pteromyini were lower than the foreground selection ratio (ω) values observed in Sciurini. A RELAX analysis revealed that , , , and genes experienced intensified in selection strength. BUSTED analysis identified stronger signatures of diversifying selection in and , highlighting amino acid changes. MEME identified episodic diversifying selection at specific sites among eight PCGs. These findings revealed distinct selective pressures on PCGs in flying and tree squirrels.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1080/24701394.2024.2416179 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Effects of home range size and burrow fidelity on survival and reproduction in eastern chipmunks (Tamias striatus) across different environmental contexts.
Oecologia
December 2024
Département de Biologie, Université de Sherbrooke, Sherbrooke, Québec, Canada.
Survival and reproductive success are greatly influenced by how an individual uses its surrounding environment, which can differ across spatial scales. To better understand the habitat-fitness relationships of animals, it is essential to study space use at multiple spatial scales. Here, we used 13 years of capture-mark-recapture and burrow location data to investigate how two different aspects of space use influence the survival and female reproduction in a wild population of eastern chipmunks (Tamias striatus) in southern Québec.
View Article and Find Full Text PDFOptimized dual-tree complex wavelet transform aided multimodal image fusion with adaptive weighted average fusion strategy.
Sci Rep
December 2024
Department of Electronics and Communication Engineering, Sathyabama Institute of Science and Technology, Semmancheri, Chennai, 600119, India.
Image fusion is generally utilized for retrieving significant data from a set of input images to provide useful informative data. Image fusion enhances the applicability and quality of data. Hence, the analysis of multimodal image fusion is a new to the research topic, which is designed by combining the images of multimodal into single image in order to preserveexact details.
View Article and Find Full Text PDFEffective Survey Methods for the Elusive Data Deficient Black Flying Squirrel () in Sabah, Malaysia Facilitate First Vocalisation Record.
Animals (Basel)
November 2024
Night Spotting Project, Kota Kinabalu 88400, Sabah, Malaysia.
Flying squirrels are nocturnal, gliding relatives of tree and ground squirrels (order Sciuridae). Despite 49 species existing, literature on Asiatic flying squirrels is scarce, thus they are overlooked in conservation action plans. Recently, three species of giant flying squirrel (, and ) were observed during a nocturnal mammal survey at the Rainforest Discovery Centre (RDC), an Eco centre at the edge of the Kabili-Sepilok forest reserve in Sepilok, Sabah (Malaysia, Borneo).
View Article and Find Full Text PDFEpithelial-mesenchymal transition during the growth and involution of the prostate gland in wild ground squirrels (Spermophilus dauricus).
Anim Reprod Sci
January 2025
Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; National Engineering Research Center of Tree Breeding and Ecological Restoration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China. Electronic address:
The prostate glands of wild ground squirrels display enlarged volume during the breeding season and shrunk size during the nonbreeding season, which enables the wild ground squirrel to be an ideal animal model for studying the mechanisms of prostate growth and involution. To clarify the possible mechanism underlying seasonal morphological changes of the prostate in wild ground squirrels, epithelial-mesenchymal transitions (EMT) were focused, and the expression of EMT-related genes was investigated in the current study. Histological results showed that the epithelial lumen enlarged in the breeding season, and the stromal cells expanded during the non-breeding season.
View Article and Find Full Text PDFNo evidence of early life resource pulse effects on age-specific variation in survival, reproduction and body mass of female Siberian flying squirrels.
J Anim Ecol
December 2024
Department of Biology, University of Turku, Turku, Finland.
Understanding the diversity and causes of senescence patterns in the wild remains a challenging task, in particular among fast-living species for which senescence patterns have been poorly studied. Early life environmental conditions can shape senescence by influencing trade-offs between early and late life performance (disposable soma theory) or individual fitness through lifelong positive effects (silver spoon effects). Using a 23-year-long monitoring dataset of two populations of Siberian flying squirrels (Pteromys volans L.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!