scholarly journals Body shape differences in a pair of closely related Malawi cichlids and their hybrids: Effects of genetic variation, phenotypic plasticity, and transgressive segregation

2017 ◽  
Vol 7 (12) ◽  
pp. 4336-4346 ◽  
Author(s):  
Martin Husemann ◽  
Michael Tobler ◽  
Cagney McCauley ◽  
Baoqing Ding ◽  
Patrick D. Danley
Keyword(s):  
Genetic Variation ◽  
Phenotypic Plasticity ◽  
Body Shape ◽  
Transgressive Segregation

scholarly journals High differentiation in functional traits but similar phenotypic plasticity in populations of a soil specialist along a climatic gradient

2020 ◽  
Vol 125 (6) ◽  
pp. 969-980 ◽  
Author(s):  
Silvia Matesanz ◽  
Marina Ramos-Muñoz ◽  
Mario Blanco-Sánchez ◽  
Adrián Escudero
Keyword(s):  
Genetic Variation ◽  
Phenotypic Plasticity ◽  
Functional Traits ◽  
Common Garden ◽  
Population Level ◽  
General Purpose ◽  
Climatic Conditions ◽  
Environment Interaction ◽  
Moisture Variation ◽  
Neutral Genetic Variation

Abstract Background and Aims Plants experiencing contrasting environmental conditions may accommodate such heterogeneity by expressing phenotypic plasticity, evolving local adaptation or a combination of both. We investigated patterns of genetic differentiation and plasticity in response to drought in populations of the gypsum specialist Lepidium subulatum. Methods We created an outdoor common garden with rain exclusion structures using 60 maternal progenies from four distinct populations that substantially differ in climatic conditions. We characterized fitness, life history and functional plasticity in response to two contrasting treatments that realistically reflect soil moisture variation in gypsum habitats. We also assessed neutral genetic variation and population structure using microsatellite markers. Key Results In response to water stress, plants from all populations flowered earlier, increased allocation to root tissues and advanced leaf senescence, consistent with a drought escape strategy. Remarkably, these probably adaptive responses were common to all populations, as shown by the lack of population × environment interaction for almost all functional traits. This generally common pattern of response was consistent with substantial neutral genetic variation and large differences in population trait means. However, such population-level trait variation was not related to climatic conditions at the sites of origin. Conclusions Our results show that, rather than ecotypes specialized to local climatic conditions, these populations are composed of highly plastic, general-purpose genotypes in relation to climatic heterogeneity. The strikingly similar patterns of plasticity among populations, despite substantial site of origin differences in climate, suggest past selection on a common norm of reaction due to similarly high levels of variation within sites. It is thus likely that plasticity will have a prevalent role in the response of this soil specialist to further environmental change.

How much do phenotypic plasticity and local genetic variation contribute to phenotypic divergences along environmental gradients in widespread invasive plants? A meta-analysis

Oikos ◽  
2016 ◽  
Vol 125 (7) ◽  
pp. 905-917 ◽  
Author(s):  
Huixuan Liao ◽  
Carla M. D'Antonio ◽  
Baoming Chen ◽  
Qiaoqiao Huang ◽  
Shaolin Peng
Keyword(s):  
Genetic Variation ◽  
Phenotypic Plasticity ◽  
Invasive Plants ◽  
Environmental Gradients ◽  
Meta Analysis

scholarly journals Genetic variation and phenotypic plasticity in circadian rhythms in an armed beetle, Gnatocerus cornutus (Tenebrionidae)

2020 ◽  
Vol 130 (1) ◽  
pp. 34-40 ◽  
Author(s):  
Kentarou Matsumura ◽  
Masato S Abe ◽  
Manmohan D Sharma ◽  
David J Hosken ◽  
Taishi Yoshii ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Phenotypic Plasticity ◽  
Circadian Rhythms ◽  
Temperature Effects ◽  
Temperature Compensation ◽  
Biological Rhythms ◽  
Total Activity ◽  
Biological Clocks ◽  
Isofemale Lines ◽  
Free Running

Abstract Circadian rhythms, their free-running periods and the power of the rhythms are often used as indicators of biological clocks, and there is evidence that the free-running periods of circadian rhythms are not affected by environmental factors, such as temperature. However, there are few studies of environmental effects on the power of the rhythms, and it is not clear whether temperature compensation is universal. Additionally, genetic variation and phenotypic plasticity in biological clocks are important for understanding the evolution of biological rhythms, but genetic and plastic effects are rarely investigated. Here, we used 18 isofemale lines (genotypes) of Gnatocerus cornutus to assess rhythms of locomotor activity, while also testing for temperature effects. We found that total activity and the power of the circadian rhythm were affected by interactions between sex and genotype or between sex, genotype and temperature. The males tended to be more active and showed greater increases in activity, but this effect varied across both genotypes and temperatures. The period of activity varied only by genotype and was thus independent of temperature. The complicated genotype–sex–environment interactions we recorded stress the importance of investigating circadian activity in more integrated ways.

scholarly journals THE COMPARISON OF PHENOTYPIC PLASTICITY AND GENETIC VARIATION IN POPULATIONS OF THE GRASSDANTHONIA SPICATA

Evolution ◽  
1984 ◽  
Vol 38 (4) ◽  
pp. 845-855 ◽  
Author(s):  
Samuel M. Scheiner ◽  
Charles J. Goodnight
Keyword(s):  
Genetic Variation ◽  
Phenotypic Plasticity

Global assessment of genetic variation and phenotypic plasticity in the lichen-forming species Tephromela atra

2013 ◽  
Vol 64 (1) ◽  
pp. 233-251 ◽  
Author(s):  
Lucia Muggia ◽  
Sergio Pérez-Ortega ◽  
Alan Fryday ◽  
Toby Spribille ◽  
Martin Grube
Keyword(s):  
Genetic Variation ◽  
Phenotypic Plasticity ◽  
Global Assessment
Sign in / Sign up

Export Citation Format

Share Document