Novel trophic niches drive variable progress towards ecological speciation within an adaptive radiation of pupfishes

Novel trophic niches drive variable progress towards ecological speciation within an adaptive radiation of pupfishes

Adaptive radiation is recognized by a rapid burst of phenotypic, ecological and species diversification. However, it is unknown whether different species within an adaptive radiation evolve reproductive isolation at different rates. We compared patterns of genetic differentiation between nascent spe...

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Veröffentlicht in:Molecular ecology 2014-04, Vol.23 (7), p.1846-1862
Hauptverfasser: Martin, Christopher H., Feinstein, Laura C.
Format: Artikel
Sprache:eng
Schlagworte:
Adaptation
Adaptation, Physiological - genetics
adaptive radiation
Animals
Bahamas
Cluster Analysis
Cyprinodon
ecological novelty
Ecology
Ecosystem
Evolutionary biology
Fish
Gene Flow
Genetic diversity
Genetic Speciation
Genetics, Population
Killifishes - classification
Killifishes - genetics
Lakes
next-generation sequencing
parapatric speciation
Polymorphism, Single Nucleotide
population genomics
RADseq
Species Specificity
sympatric speciation
Sympatry
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Zusammenfassung:Adaptive radiation is recognized by a rapid burst of phenotypic, ecological and species diversification. However, it is unknown whether different species within an adaptive radiation evolve reproductive isolation at different rates. We compared patterns of genetic differentiation between nascent species within an adaptive radiation of Cyprinodon pupfishes using genotyping by sequencing. Similar to classic adaptive radiations, this clade exhibits rapid morphological diversification rates and two species are novel trophic specialists, a scale‐eater and hard‐shelled prey specialist (durophage), yet the radiation is
ISSN:0962-1083
1365-294X
DOI:10.1111/mec.12658