"individual lifespan" is a correct and usable phrase in written English.
It refers to the length of time that a specific individual lives. Example: The average individual lifespan in the United States has increased by 10 years over the past century due to advancements in healthcare and technology.
We call this hexad relationship a demographic time framework because it is based on the events of birth and death in calendar time, entailing six time measures: chronological age (A), period (P), birth cohort (C), time to death (T), death cohort (D), and individual lifespan (L).
The maximum individual lifespan of mated and virgin males were between 1 and 2 months and > 3 months, respectively (Fig. 1A).
This suggests that when bees are starving or diseased or face other factors that shorten their individual lifespan, the motivation to forage overrides the motivation to attend to brood.
The above analysis assumed that the duration of favorable or unfavorable conditions greatly exceeds individual lifespan and that older individuals receive no benefit from growth or experience, so that reproductive delay never increases individual fecundity.
A study of Drosophila asked whether individual metabolic rates determined individual lifespan (Hulbert et al., 2004).
However, neither mitochondrial morphology nor mitochondrial volume of five- and seven-day old wild-type animals can be used to predict individual lifespan.
Britain's queen now sends out ten times as many congratulatory messages to centenarians as she did when she came to the throne nearly half a century ago.But although on average people in affluent countries now will live far longer than their equivalents even a century or two ago, individual lifespans will not be huge by historical standards.
The available evidence suggests that pocket gophers, despite individual lifespans of only 2 3 years (Johnson and Horwath Burnham 2012), have almost completely reworked 20 40 mm thick layers of W tephra in alpine meadow sites in 500 years or less.
That means, in other words, that when resources are scarce, a species as a whole has a better shot at surviving if its populations are organizing themselves to promote long term survival with shorter individual lifespans.
Individual lifespans were calculated as the number of hours spent in hyperoxia prior to observed death.
Furthermore, to be used for informative epistasis analysis, invertebrate DR protocols must also allow tracking of individual lifespans and be optimizable for different genotypes [27].
