A. Stier

Changes in surface temperatures reveal the thermal challenge associated with catastrophic moult in captive Gentoo penguins

This study measures surface temperatures of captive Gentoo penguins during moult to assess thermal challenges from increased insulation and heat dissipation needs.

Mitonuclear interactions impact aerobic metabolism in hybrids and may explain mitonuclear discordance in young, naturally hybridizing bird lineages

The paper shows mitonuclear interactions affect aerobic metabolism in bird hybrids and may explain geographic discordance between mitochondrial and nuclear genomes.

Surface temperatures are influenced by handling stress independently of corticosterone levels in wild king penguins (Aptenodytes patagonicus)

This study uses thermal imaging to show that handling stress increases adult eye temperature and decreases beak temperature, but corticosterone levels do not affect surface temperatures in king penguins.

Early-life environmental effects on mitochondrial aerobic metabolism: an experimental brood size manipulation in wild great tits

This study examines how brood size manipulation affects mitochondrial metabolism and ROS production in great tit chicks, finding no significant long-term effects but noting size-related metabolic differences.

Can increased prenatal exposure to thyroid hormones alter physiology and behaviour in the long-term? Insights from an experimental study in Japanese quails.

This study investigates the long-term effects of maternal thyroid hormone exposure on Japanese quail behavior, plasma hormone levels, and brain gene expression, finding no significant effects.

From maternal glucocorticoid and thyroid hormones to epigenetic regulation of gene expression: an experimental study in a wild bird species

This study examines how prenatal exposure to maternal glucocorticoids and thyroid hormones affects offspring stress response, DNA methylation, and gene expression in great tits.

The CRL4B E3 ligase regulates mitosis by recruiting phospho-specific DCAFs

This study identifies LIS1 and WDR1 as CUL4B-specific DCAFs that bind via phosphorylation, essential for mitosis and brain development, but not the CUL4B-P50L mutant.

No evidence for associations between brood size, gut microbiome diversity and survival in great tit (Parus major) nestlings

The paper investigates if brood size affects gut microbiome diversity and survival in great tit nestlings but finds no significant associations.

Prenatal thyroid hormones accelerate postnatal growth and telomere shortening in wild great tits

This study investigates how prenatal thyroid hormones affect postnatal growth, telomere shortening, and survival in wild great tits, finding accelerated growth but no immediate telomere length changes.

From climate warming to accelerated cellular ageing: an experimental heating study in a wild passerine bird

This study shows that increased early-life temperature in great tits accelerates telomere shortening, potentially reducing survival, without affecting growth or fledging survival.

Experimental demonstration of prenatal programming of mitochondrial aerobic metabolism lasting until adulthood

The paper tests if prenatal conditions affect mitochondrial aerobic metabolism across life stages in birds, finding that high incubation temperature increases metabolism persistently.

Population differences in the length and early-life dynamics of telomeres among European pied flycatchers

This study examines telomere length and early-life dynamics across six European pied flycatcher populations, finding population-specific patterns not consistently linked to migration distance or latitude.

Human blood contains circulating cell-free mitochondria, but are they really functional?

The study evaluates the functionality of cell-free mitochondria in human blood and finds they lack a functional electron transport system despite showing complex IV activity.

Testing for context-dependent effects of maternal thyroid hormones on offspring survival and physiology: an experimental approach manipulating temperature in a wild bird species

This study tests if maternal thyroid hormones affect offspring survival and physiology in a temperature-dependent manner in wild birds, finding no clear context-dependent effects.

Born to be young: prenatal thyroid hormones increase early-life telomere length

This study shows that prenatal thyroid hormone exposure in birds increases telomere length and may influence longevity by affecting biological age at birth.

Spatial variation in exploited metapopulations obscures risk of collapse

The paper examines how spatial mismatches in harvesting metapopulations can obscure local collapse risks and proposes management strategies to mitigate these effects.

Ageing before birth: pace and stability of prenatal growth affect telomere dynamics

This study manipulates prenatal growth in Japanese quail to show that fast and unstable growth reduce telomere length at hatching, with effects persisting into adulthood.

Plastic but repeatable: rapid adjustments of mitochondrial function and density during reproduction in a wild bird species

The paper measures mitochondrial function and density in wild pied flycatchers during different reproductive stages, finding both repeatability and rapid plasticity in these traits.