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Wolves howl because they care: Social relationship can explain variation in vocal production

Date:
August 22, 2013
Source:
Cell Press
Summary:
When a member of the wolf pack leaves the group, the howling by those left behind isn't a reflection of stress but of the quality of their relationships. So say researchers based on a study of nine wolves from two packs living at Austria's Wolf Science Center.

When a member of the wolf pack leaves the group, the howling by those left behind isn't a reflection of stress but of the quality of their relationships.
Credit: Mazzini et al.

When a member of the wolf pack leaves the group, the howling by those left behind isn't a reflection of stress but of the quality of their relationships. So say researchers based on a study of nine wolves from two packs living at Austria's Wolf Science Center that appears in Current Biology, a Cell Press publication, on August 22.

The findings shed important light on the degree to which animal vocal production can be considered as voluntary, the researchers say.

"Our results suggest the social relationship can explain more of the variation we see in howling behavior than the emotional state of the wolf," says Friederike Range of the Messerli Research Institute at the University of Veterinary Medicine Vienna. "This suggests that wolves, to a certain extent, may be able to use their vocalizations in a flexible way."

Scientists have known very little about why animals make the sounds that they do. Are they uncontrollable emotional responses? Or do animals have the ability to change those vocalizations based on their own understanding of the social context?

At the Wolf Science Center, human handlers typically take individual wolves out for walks on a leash, one at a time. On those occasions, they knew, the remaining pack mates always howl.

To better understand why, Range and her colleagues measured the wolves' stress hormone levels. They also collected information on the wolves' dominance status in the pack and their preferred partners. As they took individual wolves out for long walks, they recorded the reactions of each of their pack mates.

Those observations show that wolves howl more when a wolf they have a better relationship with leaves the group and when that individual is of high social rank. The amount of howling did not correspond to higher levels of the stress hormone cortisol.

"Our data suggest that howling is not a simple stress response to being separated from close associates but instead may be used more flexibly to maintain contact and perhaps to aid in reuniting with allies," Range says.


Story Source:

The above story is based on materials provided by Cell Press. Note: Materials may be edited for content and length.


Journal Reference:

  1. Francesco Mazzini, Simon W. Townsend, Zsσfia Virαnyi, Friederike Range. Wolf Howling Is Mediated by Relationship Quality Rather Than Underlying Emotional Stress. Current Biology, 2013 DOI: 10.1016/j.cub.2013.06.066

Cite This Page:

Cell Press. "Wolves howl because they care: Social relationship can explain variation in vocal production." ScienceDaily. ScienceDaily, 22 August 2013. <www.sciencedaily.com/releases/2013/08/130822122804.htm>.
Cell Press. (2013, August 22). Wolves howl because they care: Social relationship can explain variation in vocal production. ScienceDaily. Retrieved September 1, 2014 from www.sciencedaily.com/releases/2013/08/130822122804.htm
Cell Press. "Wolves howl because they care: Social relationship can explain variation in vocal production." ScienceDaily. www.sciencedaily.com/releases/2013/08/130822122804.htm (accessed September 1, 2014).

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