Lifespan and reproduction are key fitness components, both of which are influences by genetics and the environment. Tracking large numbers of genotypically known individuals throughout their lives in known environments has been challenging. Here we show for isogenic individual E. coli bacteria under controlled environments how demographic parameters and distributions in reproduction and survival change across environments. We achieve this by using a microfluidic device that traps thousands of individual E. coli cells and tracks their division (reproduction) over their lifespan. Our results show substantial variation of lifespan and reproduction within the same environment, and significant shifts in mean and variance in lifespan and reproduction among environments. Both variance and mean lifespan and reproduction decreases with increased temperature, but the ratio between the two remains surprisingly constant. The environmental dependency of neutral variability among individuals suggests different adaptive paces across environments.
|Publikationsdato||6. okt. 2015|
|Status||Udgivet - 6. okt. 2015|
|Begivenhed||Evolutionary Demography Society Meeting - Lunteren, Holland|
Varighed: 5. okt. 2015 → 7. okt. 2015
|Konference||Evolutionary Demography Society Meeting|
|Periode||05/10/2015 → 07/10/2015|