scholarly journals Shaping development through mechanical strain: the transcriptional basis of diet-induced phenotypic plasticity in a cichlid fish

2013 ◽  
Vol 22 (17) ◽  
pp. 4516-4531 ◽  
Author(s):  
Helen M. Gunter ◽  
Shaohua Fan ◽  
Fan Xiong ◽  
Paolo Franchini ◽  
Carmelo Fruciano ◽  
...  
Keyword(s):  
Phenotypic Plasticity ◽  
Mechanical Strain ◽  
Cichlid Fish

Neglected Patterns of Variation in Phenotypic Plasticity: Age- and Sex-Specific Antipredator Plasticity in a Cichlid Fish

2018 ◽  
Vol 191 (4) ◽  
pp. 475-490 ◽  
Author(s):  
Denis Meuthen ◽  
Sebastian A. Baldauf ◽  
Theo C. M. Bakker ◽  
Timo Thünken
Keyword(s):  
Phenotypic Plasticity ◽  
Cichlid Fish ◽  
Age And Sex

scholarly journals Adaptive phenotypic plasticity contributes to divergence between lake and river populations of an East African cichlid fish

2018 ◽  
Vol 8 (15) ◽  
pp. 7323-7333 ◽  
Author(s):  
Jelena Rajkov ◽  
Alexandra Anh‐Thu Weber ◽  
Walter Salzburger ◽  
Bernd Egger
Keyword(s):  
Phenotypic Plasticity ◽  
Cichlid Fish ◽  
East African ◽  
African Cichlid ◽  
Adaptive Phenotypic Plasticity

scholarly journals Reverting ontogeny: rapid phenotypic plasticity of colour vision in cichlid fish

2019 ◽  
Vol 6 (7) ◽  
pp. 190841 ◽  
Author(s):  
Andreas Härer ◽  
Nidal Karagic ◽  
Axel Meyer ◽  
Julián Torres-Dowdall
Keyword(s):  
Phenotypic Plasticity ◽  
Cichlid Fish ◽  
Visual Sensitivity ◽  
Ambient Light ◽  
Light Conditions ◽  
Ontogenetic Changes ◽  
Long Wavelength ◽  
Cone Opsin ◽  
Single Cone ◽  
Wavelength Light

Phenotypic plasticity, particularly during development, allows organisms to rapidly adjust to different environmental conditions. Yet, it is often unclear whether the extent and direction of plastic changes are restricted by an individual's ontogeny. Many species of cichlid fishes go through ontogenetic changes in visual sensitivity, from short to long wavelengths, by switching expression of cone opsin genes crucial for colour vision. During this progression, individuals often exhibit phenotypic plasticity to the ambient light conditions. However, it is commonly assumed that once an adult visual phenotype is reached, reverting to an earlier ontogenetic state with higher sensitivity at shorter wavelengths is not common. In this study, we experimentally demonstrate that four-month-old Midas cichlid fish ( Amphilophus astorquii ) show plasticity in single cone opsin expression after experiencing drastic changes in light conditions. Resulting shifts of visual sensitivity occurred presumably in an adaptive direction—towards shorter or longer wavelengths when exposed to short- or long-wavelength light, respectively. Single cone opsin expression changed within only a few days and went through a transitional phase of co-expression. When the environment was experimentally enriched in long-wavelength light, the corresponding change occurred gradually along a dorsoventral gradient within the retina. This plasticity allowed individuals to revert earlier ontogenetic changes and return to a more juvenile visual phenotype demonstrating previously unrecognized insights into temporal and spatial dynamics of phenotypic plasticity of the visual system in response to ambient light.

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