Christina Bauch

Christina Bauch

Dr. rer. nat.

About

25
Publications
5,231
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
706
Citations
Introduction
My research lies in the interface between physiology, ecology and evolutionary biology and aims at understanding causes and consequences of variation in life history. Using correlational and experimental approaches I investigate life-history trade-offs and proximate molecular mechanisms, inheritance patterns and environmental effects in wild populations.

Publications

Publications (25)
Article
Full-text available
Telomere length is associated with cellular senescence, lifestyle and ageing. Short telomeres indicate poor health in humans and reduced life expectancy in several bird species, but little is known about telomeres in relation to phenotypic quality in wild animals. We investigated telomere lengths in erythrocytes of known-age common terns (Sterna hi...
Article
Full-text available
Telomere length (TL) predicts health and survival across taxa. Variation in TL between individuals is thought to be largely of genetic origin, but telomere inheritance is unusual, because zygotes already express a TL phenotype, the TL of the parental gametes. Offspring TL changes with paternal age in many species including humans, presumably throug...
Article
Full-text available
Individuals in free‐living animal populations generally differ substantially in reproductive success, lifespan and other fitness‐related traits and the molecular mechanisms underlying this variation are poorly understood. Telomere length and dynamics are candidate traits explaining this variation, as long telomeres predict a higher survival probabi...
Article
Full-text available
Telomere length and telomere shortening predict survival in many organisms. This raises the question of the contribution of genetic and environmental effects to variation in these traits, which is still poorly known, particularly for telomere shortening. We used experimental (cross‐fostering) and statistical (quantitative genetic ‘animal’ models) m...
Article
Mercury is a heavy metal, which is pervasive and persistent in the marine environment. It bioaccumulates within organisms and biomagnifies in the marine food chain. Due to its high toxicity, mercury contamination is a major concern for wildlife and human health. Telomere length is a biomarker of aging and health, because it predicts survival, makin...
Article
Full-text available
Life history theory suggests a trade-off between costly activities such as breeding and migration and somatic self-maintenance. However, how the short-term cost of parental effort is expressed in species with a slow pace-of-life is not well understood. Also, investigating carry-over effects of migration is most meaningful when comparing migratory s...
Article
Full-text available
Telomeres are protective caps at the end of eukaryotic chromosomes that shorten with age and in response to stressful or resource‐demanding conditions. Their length predicts individual health and lifespan across a wide range of animals, but whether the observed positive association between telomere length and lifespan is environmentally induced, or...
Preprint
Telomere length (TL) and shortening rate predict survival in many organisms. Evolutionary dynamics of TL in response to survival selection depend on the presence of genetic variation that selection can act upon. However, the amount of standing genetic variation is poorly known for both TL and TL shortening rate, and has not been studied for both tr...
Article
Full-text available
1.The assumption that reproductive effort decreases somatic state, accelerating ageing, is central to our understanding of life‐history variation. Maximal reproductive effort early in life is predicted to be maladaptive by accelerating ageing disproportionally, decreasing fitness. 2.Optimality theory predicts that reproductive effort is restrained...
Article
Full-text available
Telomeres are protective caps at the end of chromosomes, and their length is positively correlated with individual health and lifespan across taxa. Longitudinal studies have provided mixed results regarding the within-individual repeatability of telomere length. While some studies suggest telomere length to be highly dynamic and sensitive to resour...
Article
Full-text available
Evidence for transgenerational effects of senescence, whereby offspring from older parents have a reduced lifetime reproductive success, is increasing. Such effects could arise from compromised germline maintenance in old parents, potentially reflected in reduced telomere length in their offspring. We test the relationship between parental age and...
Preprint
Full-text available
Telomere length (TL) predicts health and lifespan in humans and other organisms, making the identification of the causes of TL variation of interest. At conception, zygotes inherit genes that regulate TL during early development, but at the same time already express a phenotype, which is the TL of the parental gametes that formed the zygote. Whethe...
Article
Full-text available
The relationship between growth and age-specific telomere length, as a proxy of somatic state, is increasingly investigated, but observed patterns vary and a predictive framework is lacking. We outline expectations based on the assumption that telomere maintenance is costly and argue that individual heterogeneity in resource acquisition is predicte...
Article
Full-text available
Individual migration pattern during non-breeding season is still a black box in many migratory birds. However, knowledge on both individual level and population level in migration and overwintering is fundamental to understand the life cycle of these birds and the constraints affecting them. We showed in a highly aerial migrant, the common swift Ap...
Article
Full-text available
Oxidative stress shortens telomeres in cell culture, but whether oxidative stress explains variation in telomere shortening in vivo at physiological oxidative stress levels is not well known. We therefore tested for correlations between six oxidative stress markers and telomere attrition in nestling birds (jackdaws Corvus monedula) that show a high...
Article
Full-text available
Oxidative stress shortens telomeres in cell culture, but whether oxidative stress explains variation in telomere shortening in vivo at physiological oxi-dative stress levels is not well known. We therefore tested for correlations between six oxidative stress markers and telomere attrition in nestling birds (jackdaws Corvus monedula) that show a hig...
Article
Full-text available
Telomere length is a candidate biomarker of ageing and phenotypic quality, but little is known of the (physiological) causes of telomere length variation. We previously showed that individual common terns Sterna hirundo with high reproductive success had short telomeres independent of age, and this pattern was particularly strong in the longer telo...
Article
Full-text available
Telomeres, DNA-protein structures at chromosome ends, shorten with age and telomere length has been linked to age-related diseases and survival. In-vitro studies revealed that the shortest telomeres trigger cell senescence, but whether the shortest telomeres are also the best biomarker of ageing is not known. We measured telomeres in erythrocytes o...
Article
Full-text available
The use of haematophagous bugs (Triatominae) for minimally-invasive blood sampling has increasingly gained interest. We developed a small bug-containing dummy egg (size: 25 9 19 [mm]) for stress-free blood sampling during incubation in Common Swifts (Apus apus) and potentially even smaller bird species. Our design expands on an application of a met...
Article
Full-text available
We investigated the reliability of buccal swabs for molecular sex determination in very young nestlings (0–14 days old) and adults of the Common Swift (Apus apus) compared to the results from blood samples of the same individuals. Sex determination based on buccal swabs matched the result of sex determination based on blood samples in 46 out of 47...
Article
Full-text available
In vertebrates little is known about causes and correlates of differences in individual body condition. This is, however, essential if we are to gain an understanding of environmental influences on wild populations. To track changes in individual physiological state we analysed blood metabolite concentrations in breeding common terns Sterna hirundo...
Article
Full-text available
Many ecological studies use stress hormones to assess the condition, health or disturbance levels of wild organisms. Common blood sampling protocols for this research involve trapping individuals and taking blood within three minutes to obtain a “baseline” for analysis of stress hormones (“conventional method”). In some situations it may be difficu...
Article
Full-text available
In long-lived vertebrates, individuals generally visit potential breeding areas or populations during one or more seasons before reproducing for the first time. During these years of prospecting, they select a future breeding site, colony, or mate and improve various skills and their physical condition to meet the requirements of reproduction. One...

Network

Cited By

Projects

Projects (3)
Project
Demographic, social and physiological aspects of life histories of free-living jackdaws
Project
Causes and consequences of variation in telomere length and dynamics in humans and animals
Project
life-history strategies in Common Swifts (Apus apus)