PubMed_ArguminSci  

PubMed:31677316 JSONTXT 6 Projects

Annnotations TAB TSV DIC JSON TextAE

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.