Data from: Density and group size influence shoal cohesion, but not coordination in zebrafish (Danio rerio)
The formations made by gregarious animals can range from loose aggregates to highly synchronized and ordered structures. For very large, coordinated groups, both physical and social environments are important for determining the physical arrangement of individuals in the group. Here we tested whethe...
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Zusammenfassung: | The formations made by gregarious animals can range from loose aggregates
to highly synchronized and ordered structures. For very large, coordinated
groups, both physical and social environments are important for
determining the physical arrangement of individuals in the group. Here we
tested whether physical and social factors are also important in
determining the structure of small, loosely coordinated groups of
zebrafish. We found that even though our fish were not crowded and did not
use most of the available space, the distance between individual fish was
explained primarily by the amount of available space (i.e., density).
Zebrafish in a larger space spread out more and the total dimensions of
the shoal were an additive function also of group size. We, however, did
not find any impact of social or physical environment on the orientation
of individual fish or shoal. Thus, both physical and social factors were
important for shoal spatial arrangements, but not individual orientation
and shoal alignment. |
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DOI: | 10.5061/dryad.90n5f |