Results 41 to 50 of about 17,678 (274)
Gene expression dynamics during rapid organismal diversification in African cichlid fishes
Changes in gene expression play a fundamental role in phenotypic evolution. Transcriptome evolutionary dynamics have so far mainly been compared among distantly related species and remain largely unexplored during rapid organismal diversification, in ...
Athimed El Taher+6 more
semanticscholar +1 more source
Genetic Variation and Hybridization in Evolutionary Radiations of Cichlid Fishes.
Evolutionary radiations are responsible for much of the variation in biodiversity. Cichlid fishes are well known for spectacular evolutionary radiations, as they have repeatedly evolved into large and phenotypically diverse arrays of species.
H. Svardal, W. Salzburger, M. Malinsky
semanticscholar +1 more source
Sensory Drive in Cichlid Speciation [PDF]
The role of selection in speciation is a central yet poorly understood problem in evolutionary biology. The rapid radiations of extremely colorful cichlid fish in African lakes have fueled the hypothesis that sexual selection can drive species divergence without geographical isolation.
Kees D. Hofker+3 more
openaire +3 more sources
Developing and adult reef fish show rapid light‐induced plasticity in their visual system
Abstract The visual capabilities of fish are optimized for their ecology and light environment over evolutionary time. Similarly, fish vision can adapt to regular changes in light conditions within their lifetime, e.g., ontogenetic or seasonal variation.
Lily G. Fogg+5 more
wiley +1 more source
The process of adaptive radiation was classically hypothesized to require isolation of a lineage from its source (no gene flow) and from related species (no competition).
J. Meier+9 more
semanticscholar +1 more source
Molecular mechanisms of Eda‐mediated adaptation to freshwater in threespine stickleback
Abstract A main goal of evolutionary biology is to understand the genetic basis of adaptive evolution. Although the genes that underlie some adaptive phenotypes are now known, the molecular pathways and regulatory mechanisms mediating the phenotypic effects of those genes often remain a black box.
Carlos E. Rodríguez‐Ramírez+5 more
wiley +1 more source
Background The extent to which deterministic rather than stochastic processes guide gut bacteria co-existence and ultimately their assembling into a community remains largely unknown.
J. Riera, L. Baldo
semanticscholar +1 more source
Hybrid Breakdown in Cichlid Fish
Studies from a wide diversity of taxa have shown a negative relationship between genetic compatibility and the divergence time of hybridizing genomes. Theory predicts the main breakdown of fitness to happen after the F1 hybrid generation, when heterosis subsides and recessive allelic (Dobzhansky-Muller) incompatibilities are increasingly unmasked.
Stelkens, Rike Bahati+2 more
openaire +7 more sources
Phenotypic plasticity enables development to produce multiple phenotypes in response to environmental conditions. Plasticity driven variation has been suggested to play a key role in adaptive divergence, and plasticity itself can evolve.
Kirsty McWhinnie+3 more
doaj +1 more source
Decoupled jaws promote trophic diversity in cichlid fishes
Functional decoupling of oral and pharyngeal jaws is widely considered to have expanded the ecological repertoire of cichlid fishes. But, the degree to which the evolution of these jaw systems is decoupled and whether decoupling has impacted trophic ...
E. Burress+2 more
semanticscholar +1 more source