• Publications
  • Influence
Hybridization and adaptive radiation.
  • O. Seehausen
  • Biology
    Trends in ecology & evolution
  • 1 April 2004
Cichlid Fish Diversity Threatened by Eutrophication That Curbs Sexual Selection
TLDR
Cichlid fish species of Lake Victoria can interbreed without loss of fertility but are sexually isolated by mate choice, and human activities that increase turbidity destroy both the mechanism of diversification and that which maintains diversity.
EARLY BURSTS OF BODY SIZE AND SHAPE EVOLUTION ARE RARE IN COMPARATIVE DATA
TLDR
It is suggested that the classical model of adaptive radiation, where morphological evolution is initially rapid and slows through time, may be rare in comparative data.
Genomics and the origin of species
TLDR
Emergent trends and gaps in understanding are identified, new approaches to more fully integrate genomics into speciation research are proposed, and an integrative definition of the field of speciation genomics is provided.
Age of cichlids: new dates for ancient lake fish radiations.
TLDR
Accumulation of genetic diversity within the radiating lineages of the African Lakes Malawi, Victoria and Barombi Mbo, and Palaeolake Makgadikgadi began around or after the time of lake basin formation, suggesting lakes may have captured preexisting cichlid diversity from multiple sources from which adaptive radiations have evolved.
Speciation through sensory drive in cichlid fish
TLDR
This work identifies the ecological and molecular basis of divergent evolution in the cichlid visual system, demonstrates associated divergence in male colouration and female preferences, and shows subsequent differentiation at neutral loci, indicating reproductive isolation.
African cichlid fish: a model system in adaptive radiation research
  • O. Seehausen
  • Environmental Science
    Proceedings of the Royal Society B: Biological…
  • 22 August 2006
TLDR
The evidence suggests that speciation rate declines through time as niches get filled up during adaptive radiation, but the data suggest that the propensity to radiate within lakes is a derived property that evolved during the evolutionary history of some African cichlids, and does not coincide with the appearance of proposed key innovations in morphology and life history.
The genomic substrate for adaptive radiation in African cichlid fish
TLDR
It is concluded that a number of molecular mechanisms shaped East African cichlid genomes, and that amassing of standing variation during periods of relaxed purifying selection may have been important in facilitating subsequent evolutionary diversification.
Genome‐wide RAD sequence data provide unprecedented resolution of species boundaries and relationships in the Lake Victoria cichlid adaptive radiation
TLDR
This work uses NGS data generated from reduced representation genomic libraries of restriction‐site‐associated DNA (RAD) markers to infer phylogenetic relationships among 16 species of cichlid fishes from a single rocky island community within Lake Victoria's cICHlid adaptive radiation, and produces phylogenetic trees with unprecedented resolution for this group.
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