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Effects of group size on agonistic behaviors of commercially housed growing pigs.
This sudden change in agonistic behavior signifies the formation of the dominance relationship, and identifies the newly emerged subordinate and dominant (Herberholz et al.
Additionally, after removal of partitions, the time spent exhibiting agonistic behavior increased (P < 0.
Although an incomplete feminization could be responsible for the agonistic behavior observed in the AFM, we cannot rule out the effect on hormonal patterns and therefore on behavior of the interaction of the three components that govern sex in the Nile tilapia: a complex genetic sex determination system with a major determinant locus, some minor genetic factors, as well as the influence of temperature (Baroiller et al.
Thus we speculate that the lack of behavioral dominance and overall lower level of agonistic behavior that we observed in the neutral arena may have resulted from the absence of habitat structure cues, i.
The finding of only isolated individuals in the wild (occurring tens or even hundreds of meters apart), and the territorial and conspecific agonistic behavior exhibited in captivity (remarkably, even by newly released recruits), suggests that Q.
infernalis are likely the consequence of agonistic behavior among males (Bowker, 1988; Formanowicz et al.
Few agonistic behaviors were exhibited toward conspecifics, but interspecific chasing and nipping did occur, albeit it at low levels, in the presence of blackstripe topminnow.
Effects of boar presence on agonistic behavior, shoulder scratches, and stress response of bred sows at mixing.
We also demonstrate that in population studies, two species with similar agonistic behavior characteristics (such as the American lobster and blue crab) can behave differently under similar conditions and therefore require species-specific assessments.