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Associations between social behaviour and proinflammatory immune activation are modulated by age in a free-ranging primate population.
Anim Behav
January 2025
Department of Anthropology, New York University, New York, NY, U.S.A.
The effect of the social environment on the proinflammatory immune response may mediate the relationship between social environment and fitness but remains understudied outside captive animals and human populations. Age can also influence both immune function and social behaviour, and hence may modulate their relationships. This study investigates the role of social interactions in driving the concentrations of two urinary markers of proinflammatory immune activation, neopterin and soluble urokinase plasminogen activator receptor (suPAR), in a free-ranging population of rhesus macaques, .
View Article and Find Full Text PDFEstimating realized relatedness in free-ranging macaques by inferring identity-by-descent segments.
Proc Natl Acad Sci U S A
January 2025
Department of Primate Behavioral Ecology, Institute of Biology, Leipzig University, Leipzig 04103, Germany.
Biological relatedness is a key consideration in studies of behavior, population structure, and trait evolution. Except for parent-offspring dyads, pedigrees capture relatedness imperfectly. The number and length of identical-by-descent DNA segments (IBD) yield the most precise relatedness estimates.
View Article and Find Full Text PDFA Natural Disaster Exacerbates and Redistributes Disease Risk Among Free-Ranging Macaques by Altering Social Structure.
Ecol Lett
January 2025
Department of Cellular and Molecular Biology, Harvard University, Cambridge, Massachusetts, USA.
Article Synopsis
- Climate change is increasing extreme weather events, which can impact animal social structures and affect disease spread.
- By studying rhesus macaques before and after a hurricane, research shows that disease transmission rates can double for up to 5 years post-disaster.
- The hurricane changed how infection risk is spread within the population, highlighting that natural disasters not only threaten wildlife health but also pose risks of disease spilling over to humans.
Genetic Architecture of Immune Cell DNA Methylation in the Rhesus Macaque.
Mol Ecol
November 2024
Department of Biological Sciences, Vanderbilt University, Nashville, Tennessee, USA.
Article Synopsis
- The study investigates how genetic variations that influence gene regulation, specifically through DNA methylation, contribute to differences in traits among rhesus macaques on Cayo Santiago Island, Puerto Rico.
- Researchers utilized bisulfite sequencing to assess DNA methylation at over 555,000 CpG sites across 573 macaque blood samples, discovering significant genetic effects on methylation levels from single nucleotide polymorphisms (SNPs).
- Findings revealed that 69.12% of the investigated CpGs had a genetic influence on their methylation (meQTL), which were predominantly located in regions associated with gene expression, highlighting genetic factors that drive phenotypic diversity in these primates.
Loss of Earth's old, wise, and large animals.
Science
January 2025
Department of Ecology and Conservation Biology, Texas A&M University, College Station, TX, USA.
Article Synopsis
- Earth's older animals are declining, but research shows they play crucial roles in cultural and ecological processes.
- Older individuals contribute significantly to reproduction, information sharing, and resilience against disturbances, challenging the traditional view that focuses solely on the downsides of aging.
- Protecting long-lived animals is important for maintaining their ecological roles and the services they provide to ecosystems.
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