Laboratory Evolution of Life-History Traits in the Bean Weevil (Acanthoscelides obtectus): The Effects of Selection on Developmental Time in Populations with Different Previous History

Evolution ◽  
1998 ◽  
Vol 52 (6) ◽  
pp. 1713 ◽  
Author(s):  
N. Tucic ◽  
I. Gliksman ◽  
D. Seslija ◽  
O. Stojkovic ◽  
D. Milanovic
Keyword(s):  
Life History ◽  
Life History Traits ◽  
Previous History ◽  
Developmental Time ◽  
Bean Weevil ◽  
Acanthoscelides Obtectus ◽  
Laboratory Evolution ◽  
Evolution Of Life

A Primer of Life Histories

2021 ◽  
Author(s):  
Jeffrey A. Hutchings
Keyword(s):  
Life History ◽  
Life Histories ◽  
Life History Theory ◽  
Life History Traits ◽  
Reproductive Effort ◽  
Effective Means ◽  
Academic Experience ◽  
Sustainable Exploitation ◽  
Evolution Of Life ◽  
Opportune Time

Life histories describe how genotypes schedule their reproductive effort throughout life in response to factors that affect their survival and fecundity. Life histories are solutions that selection has produced to solve the problem of how to persist in a given environment. These solutions differ tremendously within and among species. Some organisms mature within months of attaining life, others within decades; some produce few, large offspring as opposed to numerous, small offspring; some reproduce many times throughout their lives while others die after reproducing just once. The exponential pace of life-history research provides an opportune time to engage and re-engage new generations of students and researchers on the fundamentals and applications of life-history theory. Chapters 1 through 4 describe the fundamentals of life-history theory. Chapters 5 through 8 focus on the evolution of life-history traits. Chapters 9 and 10 summarize how life-history theory and prediction has been applied within the contexts of conservation and sustainable exploitation. This primer offers an effective means of rendering the topic accessible to readers from a broad range of academic experience and research expertise.

scholarly journals Life-history variation of drosophila subobscura under lead pollution depends on population history

Genetika ◽  
2014 ◽  
Vol 46 (3) ◽  
pp. 693-703 ◽  
Author(s):  
Bojan Kenig ◽  
Aleksandra Patenkovic ◽  
Marko Andjelkovic ◽  
Marina Stamenkovic-Rada
Keyword(s):  
Heavy Metal ◽  
Life History ◽  
Metal Contamination ◽  
Life History Traits ◽  
Heavy Metal Contamination ◽  
Developmental Time ◽  
Drosophila Subobscura ◽  
Life History Variation ◽  
Laboratory Conditions ◽  
Coefficients Of Variation

Contamination represents environmental stress that can affect genetic variability of populations, thus influencing the evolutionary processes. In this study, we evaluate the relationship between heavy metal contamination (Pb) and phenotypic variation, assessed by coefficients of variation (CV) of life-history traits. To investigate the consequences of population origin on variation of life history traits in Drosophila subobscura in response to different laboratory conditions we compared populations from relatively polluted and unpolluted environments. Prior to experiment, flies from natural populations were reared for two generations in standard Drosophila laboratory conditions. Afterwards, all flies were cultured on three different media: one medium without lead as the control, and the other two with different concentrations of lead. Coefficients of variation (CV) of life- history traits (fecundity, egg-to-adult viability and developmental time) were analyzed on flies sampled in generations F2, F5 and F8 from these three groups. In later generations samples from both polluted and unpolluted environments showed the increased fecundity variation on media with lead. This increase is expressed more in population from unpolluted environment. On contrary, population from unpolluted environment had increased variation of developmental time in earlier, F2 generation, compared to the population from polluted environment. Our results showed that the response to heavy metal contamination depends on the evolutionary history of the populations regarding habitat pollution.

scholarly journals Bacteriophage lambda overcomes a perturbation in its host–viral genetic network through mutualism and evolution of life history traits*

Evolution ◽  
2020 ◽  
Vol 74 (4) ◽  
pp. 764-774 ◽  
Author(s):  
Animesh Gupta ◽  
Anechelle N. Soto ◽  
Sarah J. Medina ◽  
Katherine L. Petrie ◽  
Justin R. Meyer
Keyword(s):  
Life History ◽  
Life History Traits ◽  
Bacteriophage Lambda ◽  
Genetic Network ◽  
Evolution Of Life
Sign in / Sign up

Export Citation Format

Share Document