| Id |
Subject |
Object |
Predicate |
Lexical cue |
| T1 |
71-170 |
DRI_Background |
denotes |
Dispersal often covaries with other traits, and this covariation was shown to have a genetic basis. |
| T2 |
171-369 |
DRI_Challenge |
denotes |
Here, we wanted to explore to what extent genetic constraints and correlational selection can explain patterns of covariation between dispersal and key life-history traits-lifespan and reproduction. |
| T3 |
370-554 |
DRI_Outcome |
denotes |
A prediction from the fitness-associated dispersal hypothesis was that lower genetic quality is associated with higher dispersal propensity as driven by the benefits of genetic mixing. |
| T4 |
555-777 |
DRI_Challenge |
denotes |
We wanted to contrast it with a prediction from a different model that individuals putting more emphasis on current rather than future reproduction disperse more, as they are expected to be more risk-prone and exploratory. |
| T5 |
778-942 |
DRI_Outcome |
denotes |
However, if dispersal has inherent costs, this will also result in a negative genetic correlation between higher rates of dispersal and some aspects of performance. |
| T6 |
943-1152 |
DRI_Approach |
denotes |
To explore this issue, we used the dioecious nematode Caenorhabditis remanei and selected for increased and decreased dispersal propensity for 10 generations, followed by five generations of relaxed selection. |
| T7 |
1153-1289 |
DRI_Outcome |
denotes |
Dispersal propensity responded to selection, and females from high-dispersal lines dispersed more than females from low-dispersal lines. |
| T8 |
1290-1494 |
DRI_Background |
denotes |
Females selected for increased dispersal propensity produced fewer offspring and were more likely to die from matricide, which is associated with a low physiological condition in Caenorhabditis nematodes. |
| T9 |
1495-1609 |
DRI_Outcome |
denotes |
There was no evidence for differences in age-specific reproductive effort between high- and low-dispersal females. |
| T10 |
1610-1689 |
DRI_Outcome |
denotes |
Rather, reproductive output of high-dispersal females was consistently reduced. |
| T11 |
1690-1777 |
DRI_Outcome |
denotes |
We argue that our data provide support for the fitness-associated dispersal hypothesis. |
