Bernd Egger
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View article: Speciation dynamics and extent of parallel evolution along a lake-stream environmental contrast in African cichlid fishes
Speciation dynamics and extent of parallel evolution along a lake-stream environmental contrast in African cichlid fishes Open
African cichlid fishes reveal the dynamics of speciation and the predictability of evolution.
View article: Comparative swimming performance and behaviour of three benthic fish species: The invasive round goby (<i>Neogobius melanostomus</i>), the native bullhead (<i>Cottus gobio</i>), and the native gudgeon (<i>Gobio gobio</i>)
Comparative swimming performance and behaviour of three benthic fish species: The invasive round goby (<i>Neogobius melanostomus</i>), the native bullhead (<i>Cottus gobio</i>), and the native gudgeon (<i>Gobio gobio</i>) Open
Efforts to restore river ecosystem connectivity focus predominantly on diadromous, economically important fish species, and less attention is given to nonmigratory, small‐bodied, benthic fish species. Data on benthic fish swimming performa…
View article: Gene expression remodelling and immune response during adaptive divergence in an African cichlid fish
Gene expression remodelling and immune response during adaptive divergence in an African cichlid fish Open
Variation in gene expression contributes to ecological speciation by facilitating population persistence in novel environments. Likewise, immune responses can be of relevance in speciation driven by adaptation to different environments. Pr…
View article: Where Am I? Niche constraints due to morphological specialization in two Tanganyikan cichlid fish species
Where Am I? Niche constraints due to morphological specialization in two Tanganyikan cichlid fish species Open
Food resource specialization within novel environments is considered a common axis of diversification in adaptive radiations. Feeding specializations are often coupled with striking morphological adaptations and exemplify the relation betw…
View article: Stable Species Boundaries Despite Ten Million Years of Hybridization in Tropical Eels
Stable Species Boundaries Despite Ten Million Years of Hybridization in Tropical Eels Open
Genomic evidence is increasingly underpinning that hybridization between taxa is commonplace, challenging our views on the mechanisms that maintain their boundaries. Here, we focus on seven catadromous eel species (genus Anguilla ), and us…
View article: Repeated Evolution Versus Common Ancestry: Sex Chromosome Evolution in the Haplochromine Cichlid<i>Pseudocrenilabrus philander</i>
Repeated Evolution Versus Common Ancestry: Sex Chromosome Evolution in the Haplochromine Cichlid<i>Pseudocrenilabrus philander</i> Open
Why sex chromosomes turn over and remain undifferentiated in some taxa, whereas they degenerate in others, is still an area of ongoing research. The recurrent occurrence of homologous and homomorphic sex chromosomes in distantly related ta…
View article: Adaptive phenotypic plasticity contributes to divergence between lake and river populations of an East African cichlid fish
Adaptive phenotypic plasticity contributes to divergence between lake and river populations of an East African cichlid fish Open
Adaptive phenotypic plasticity and fixed genotypic differences have long been considered opposing strategies in adaptation. More recently, these mechanisms have been proposed to act complementarily and under certain conditions jointly faci…
View article: The puzzling phylogeography of the haplochromine cichlid fish<i>Astatotilapia burtoni</i>
The puzzling phylogeography of the haplochromine cichlid fish<i>Astatotilapia burtoni</i> Open
Astatotilapia burtoni is a member of the “modern haplochromines,” the most species‐rich lineage within the family of cichlid fishes. Although the species has been in use as research model in various fields of research since almost seven de…
View article: A complex mode of aggressive mimicry in a scale-eating cichlid fish
A complex mode of aggressive mimicry in a scale-eating cichlid fish Open
Aggressive mimicry is an adaptive tactic of parasitic or predatory species that closely resemble inoffensive models in order to increase fitness via predatory gains. Although similarity of distantly related species is often intuitively imp…
View article: Back to Tanganyika: a case of recent trans-species-flock dispersal in East African haplochromine cichlid fishes
Back to Tanganyika: a case of recent trans-species-flock dispersal in East African haplochromine cichlid fishes Open
The species flocks of cichlid fishes in the East African Great Lakes are the largest vertebrate adaptive radiations in the world and illustrious textbook examples of convergent evolution between independent species assemblages. Although re…
View article: Egg-spot pattern and body size asymmetries influence male aggression in haplochromine cichlid fishes
Egg-spot pattern and body size asymmetries influence male aggression in haplochromine cichlid fishes Open
Assessing an opponent's strength is an important component of attack strategies in territorial combats between males. Body size is often considered to directly influence an individual's strength, but other honest visual signals may also af…