Peter Hammerstein

Evolutionary Biology and the Strategic View of Ontogeny: Genetic Strategies Provide Robustness and Flexibility in the Life Course (2008)

Edward H. Hagen, Peter Hammerstein

It is difficult to synthesize evolutionary and developmental approaches to morphology, physiology, and behavior. Here we sketch one way to achieve such a synthesis that invokes ideas from...

THE EFFECT OF WOLBACHIA VERSUS GENETIC INCOMPATIBILITIES ON REINFORCEMENT AND SPECIATION (2005)

Arndt Telschow, Peter Hammerstein, John H. Werren

Wolbachia is a widespread group of intracellular bacteria commonly found in arthropods. In many insect species, Wolbachia induce a cytoplasmic mating incompatibility (CI). If different Wolbachia...

Morpho-dynamic changes of mitochondria during ageing of human endothelial cells (2005)

Jendrach, Marina, Pohl, Sandra, Vöth, Monika, Kowald, Axel, Hammerstein, Peter, Bereiter-Hahn, Jürgen

Mitochondrial morphology is regulated in many cultured eukaryotic cells by fusion and fission of mitochondria. A tightly controlled balance between fission and fusion events is required to ensure...

On the relevance of mitochondrial fusions for the accumulation of mitochondrial deletion mutants: A modelling study (2005)

Kowald, Axel, Jendrach, Marina, Pohl, Sandra, Bereiter-Hahn, Jürgen, Hammerstein, Peter

The molecular mechanisms underlying the aging process are still unclear, but the clonal accumulation of mitochondrial deletion mutants is one of the prime candidates. An important question for the...

Effects of Wolbachia on Genetic Divergence Between Populations: Mainland-Island Model (2002)

Telschow, Arndt, Hammerstein, Peter, Werren, John H.

Cytoplasmic incompatibility (CI) induced by intracellular bacteria is a possible mechanism for speciation. Growing empirical evidence suggests that bacteria of the group Wolbachia may indeed act as...

Wolbachia-Induced Unidirectional Cytoplasmic Incompatibility and Speciation: Mainland-Island Model

Telschow, Arndt, Flor, Matthias, Kobayashi, Yutaka, Hammerstein, Peter, Werren, John H.

Bacteria of the genus Wolbachia are among the most common endosymbionts in the world. In many insect species these bacteria induce a sperm-egg incompatibility between the gametes of infected males...

How many species are infected with Wolbachia? – a statistical analysis of current data

Hilgenboecker, Kirsten, Hammerstein, Peter, Schlattmann, Peter, Telschow, Arndt, Werren, John H

Wolbachia are intracellular bacteria found in many species of arthropods and nematodes. They manipulate the reproduction of their arthropod hosts in various ways, may play a role in host speciation...

Revealing the paradox of drug reward in human evolution

Sullivan, Roger J, Hagen, Edward H, Hammerstein, Peter

Neurobiological models of drug abuse propose that drug use is initiated and maintained by rewarding feedback mechanisms. However, the most commonly used drugs are plant neurotoxins that evolved to...