The aim of this paper was to further explore the role of callous–unemotional traits (CU) and empathy in bullying within 529 middle school children. We tried to advance limits of previous studies by accounting for a measure of victimization and considering age-related effects. Our results indicated that in younger students (mean age = 11 years and 8 months) the uncaring dimension of CU traits we...

Suckling lamb meat is a relevant product in Mediterranean European dairy sheep farms, and the breed Spanish Assaf widely extended through Iberian Peninsula. Knowledge of influence birth body weight (bBW) growth rate on suckling carcass quality scarce, but useful for breeding optimisation homogeneity. In turn, these growth-related traits lambs might be affected by dietary restrictions their dams...

Children's assessment of the value of different sources of information about psychological traits was investigated among 6- to 7-year-olds and 10- to 11-year-olds across 5 studies (N = 330). Older children were more likely than younger children to reject self-report as a source of information about the highly evaluative traits smart and honest, but no such age-related difference was seen for th...

In ecology and evolution, the primary challenge in understanding the processes that shape biodiversity is to assess the relationship between the phenotypic traits of organisms and the environment. Here we tested for selection on physio-morphological traits measured by scanning flow-cytometry at the individual level in phytoplankton communities under a temporally changing biotic and abiotic envi...

Following domestication, crop lineages typically undergo diversification either to adapt to disparate habitats or to fill novel agricultural roles. This process has produced the numerous varieties found in modern-day crop germplasm collections. Here, we mapped quantitative trait loci (QTLs) underlying unique traits in the Hopi sunflower, a primitive, Native American domesticate. These traits in...

the aims of the present study were to propose apolymerase chain reaction-restriction fragment length polymorphismpcr-rflp genotyping method for the ay_376689:c.773c>t single nucleotide polymorphism snp of the equine prkag3 gene, related to muscle performance, as well as to characterize this snp and a second polymorphism, aawr_02017454:g.121684t>c of the spata1 gene, related to male fertility, i...

Phenotypic traits are often influenced by dynamic resource allocation trade-offs which, when occurring over the course of individual lifespan, may manifest as trait aging. Although aging is studied for a variety of traits that are closely tied to reproduction or reproductive effort, the aging of multiple traits related to fitness in other ways are less well understood. We took advantage of almo...