DNA Methylation Shifted as Namibian Male Cheetahs Became Territorial
Paired blood samples from ten free-ranging Namibian males revealed widespread, predominantly increased DNA methylation after the same cheetahs…
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Research, conservation and new discoveries
A continuing selection of new studies, conservation projects and important developments connected to species in the archive.
Svalbard Ptarmigan and Golden Hamsters Shared a TSH Pathway for Seasonal Timing
A comparison of neuroendocrine tissue in summer- and winter-like states found the same core TSH seasonal-timing pathway in…
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Larger Broods and Older Social Fathers Were Linked to Shorter Telomeres in Male Barn Swallow Nestlings
A long-term study near Milan found shorter telomeres in male barn swallow nestlings from larger broods or with…
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Barietin From Puff Adder Venom Raised Heart Rate by About 30% in Rats
Purified barietin from puff adder venom increased heart rate by about 30% in rats while changing blood pressure…
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PFAS Exposure Was Linked to Oxidative Stress in Starling Chicks, but Not to Similar Changes in Great Tits
Eggs near an Italian fluoropolymer plant contained up to ten times more PFAS. Starling nestlings showed signs of…
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Black-Headed Gull IFN-γ Reduced Newcastle Disease Virus RNA in Cultured Immune Cells
Recombinant black-headed gull IFN-γ reduced Newcastle disease virus NP RNA in cultured gull lymphocytes, supporting antiviral activity in…
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Longer Telomeres in Yearling Barn Swallows Predicted Longer Lives and More Fledglings
A lifetime study of 106 barn swallows found that birds with longer telomeres when they entered the breeding…
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Recombinant Black-headed Gull Interferon-Alpha Was Linked to Lower Newcastle Disease Virus RNA in Laboratory Models
Newcastle disease virus increased IFN-α and Mx transcription in black-headed gull lymphocytes, while recombinant gull IFN-α was linked…
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Mercury Was Linked to Physiological Changes in Barnacle Goose Goslings but Not Adults
In wild Svalbard barnacle geese, goslings with more mercury in their red blood cells had lower 4-HNE, a…
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Gut Microbial Communities Differed Between Pre- and Post-migration Whooper Swan Samples in Xinjiang
Metagenomic sequencing of 24 whooper swan fecal samples from Xinjiang found similar overall microbial diversity before and after…
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Black Rhino Horns Contained More Selenium and Molybdenum Than White Rhino Horns
Analysis of 82 rhinoceros horns found higher selenium and molybdenum concentrations in black rhino horn than in white…
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Amur Tiger IL-15 Reduced FPV-Induced Stress and Apoptosis in Cultured Feline Cells
Researchers cloned six immune-related cytokines from four healthy Amur tigers in China. Recombinant IL-15 produced the strongest sustained…
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Mitochondrial Respiration Rose 58–87% After Homing Flights in Pigeons
In homing pigeons from Guidonia, Italy, three measures of red-blood-cell mitochondrial respiration rose by 58.2–87.3% after flight. Males…
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European Robin Retina Study Mapped Transducin Subunits and Found No Gtγ10 in Photoreceptors
A molecular study of retinal tissue from European robins captured near Oldenburg, Germany, mapped the transducin subunits present…
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European Roller Chicks in Cropland Landscapes Differed in Specific Antioxidant and Immune Markers
In central Italy, cropland-raised European roller chicks had lower expression of nine genes and lower catalase activity, but…
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Two Commercial Antivenoms Neutralised the Lethal Effects of Nigerian Puff Adder Venom in Mice
EchiTAb-Plus-ICP and PANAF both neutralised the lethal effect of Nigerian puff adder venom in a preclinical mouse model;…
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Rhesus Macaque NK Cells Shared a Core Activation Pattern Across Acute Viral Infections
Gene-expression analyses found 27 genes upregulated in rhesus macaque NK cells across two acute SIV cohorts and SARS-CoV-2…
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Urine and Scat Chemical Profiles Distinguished Tiger From Leopard With 79% and 75% Cross-validated Accuracy
Chemical profiles from tiger and leopard urine and scat reached about 79% and 75% species-classification accuracy in five-fold…
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Long-term Cultured Rock Dove Germ-cell Precursors Still Reached Developing Gonads
Researchers established the first successful long-term culture of rock dove primordial germ cells. The cells retained germline markers…
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Authentic Ancient DNA Recovered From a ~50,000-Year-Old Mountain Reedbuck Tooth
A Boomplaas Cave tooth estimated from its archaeological layer to be about 50,000 years old contained roughly 0.2%…
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