We found few individuals brooding embryos in the lowest density groups; only one of eight groups with a density of two individuals per10 cm and none of the four solitary individuals had embryos.
However, gradual supplementation of dietary l-tryptophan in the diet significantly reduced the oxygen consumption rate in both the low density group (Y=−26.74x+222.4, r²=0.915) and the high density group (Y=−32.96x+296.5, r²=0.8923).
At low density, group members tend to walk side by side, forming a line perpendicular to the walking direction.
At low density, group members tend to walk side-by-side, forming a line perpendicular to the walking direction, thereby occupying a large area in the street.
It is possible that sponges in the "low" density group retained free-living cyanobacteria from the water column on which they were feeding, either in choanocytes or other areas of the body, and for this reason they were not included in the group that was positive for photosynthetic symbionts.
In areas toward the apical surface of the cell (4.8 10.4 µm above the basal surface) significant differences in shear stresses are observable between the two low density groups (VLD, LD) and the VLD and HD groups.
Based on low-density group organization patterns, a modified two-layer social force model is proposed in this paper to simulate and reproduce a group gathering process.
Figure 9 shows that we saved an average of more than 47% of the average power consumption regarding the low-density group (number of nodes between 200 and 500), and Figure 10 shows that we saved an average of nearly 62% of the average power consumption regarding the high-density group (number of nodes between 600 and 900).
[Piccolo et al. (2008]) evaluated the effect of feed quality and stocking density on Dover sole (Solea solea) and found that, except for the lipid content, which was higher in the low-density group, proximate composition of the sole's muscle was not influenced by treatments.
